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#650331 - 04/27/16 9:55 am Nacelles and legs  
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is there a site/page anywhere that lists the dimensions of the various incarnations of the nacelles?

it's a nightmare to figure out what a nacelle fits.
Cubs are easy due to size, then it gets difficult

is there an easy way?

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#650353 - 04/27/16 11:50 am Re: Nacelles and legs [Re: AngloBike]  
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Probably not, the only thing I know is a pre-unit Thunderbird nacelle will not work on a unit 3TA 350. One way to tell is the length of the chrome "flash" on the side of the nacelle. On the pre-units it is longer than on the unit models.

#650360 - 04/27/16 12:24 pm Re: Nacelles and legs [Re: AngloBike]  
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This subject requires a book.........

Haven't found a site that is completely comprehensive, the best so far is Roy Bacon's Triumph Twins Restoration, he has a verbal description of some of the basic changes through the years of the nacelle. In the parts list and numbers in the back, one can see about 12 different types of nacelle top alone, and no photos to clarify!

Nacelle history in a nutshell:








So one can see that there is a bunch of this may fit that but not the other one, and the cub nacelles weren't even mentioned.......

For a while now, I have also been (cough, cough, ahem) "acquiring" images of nacelle tops found on the internet from what seem to be knowledgeable sources. Here are a few:

H1781 1964 to 1966 Unit Nacelle Top



H 917 1954 to 1957



H 761 1952 to 1957



H 0798 ? to ? TRW


H 807 ? to ? TRW




H 1144 1960 to 1962 Thunderbird




That's it for now. I'll check old photos and see if more can be found.

Moderator, Can we make this some sort of sticky thread to make it easier to find in 3 years??????

#650362 - 04/27/16 12:35 pm Re: Nacelles and legs [Re: Deadstiffcatt]  
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No more old photos to be found- that's the problem with planned obsolescence computers- things get lost!

However, those of you with 100% solid knowledge of your nacelle and it's correctness, well, this might be a good place to post a photo with correct part number.......

#650386 - 04/27/16 2:41 pm Re: Nacelles and legs [Re: AngloBike]  
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Wow!

Comprehensive list.
I will try to read and understand the lot.

#650452 - 04/27/16 11:08 pm Re: Nacelles and legs [Re: Deadstiffcatt]  
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Originally Posted By Deadstiffcatt

Moderator, Can we make this some sort of sticky thread to make it easier to find in 3 years??????


That is a brilliant idea
49 to 51 is easy, they all have the smaller 6" headlight with the slots in the nacelle legs and the tops have two 2" holes for the ammeter and light switch. Only difference between the 6T, 5T and T100 is the colour.

The pu duplex nacelles are shorter than the earlier pu's with a resulting shorter chrome strip.

I only have the 49-51 type that I'm sure about.

Cheers Mossy


1960 TR6B
1954 based Thunderbird Salt Lake Racer
1979 T140E
1951 6T Thunderbird Project
1981 T140E
1948 Speed Twin project
1976 Bonneville/Tiger Trail replica
2015 Bonneville T100
1949 Excelsior 197 Roadmaster project
1950 Excelsior 250 Talisman project
#650677 - 04/29/16 3:43 pm Re: Nacelles and legs [Re: Deadstiffcatt]  
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'59 Bonnie Offline
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Really great work Deadstiffcatt I have also collected photos and anything that will help... Then I was mostly looking for the '59 Bonneville nacelle or what lead to the final make-up of the '59 nacelle. This below is my interpretation and mostly covers B range 500 & 650, I hope it helps. Note that I have not read or compared any info that was supplied in Roy Bacon's book. but will at some time.

7 inch tops H618
This is the 7 inch tops H618. They are easily identified by the small hole in front of the speedo hole and both of the ammeter and switch holes have the four small cutouts at all four points of the compass. The right one is a NOS 1951 Thunderbird item it original paint. All models in these years had the same top.



8 inch nacelle legs 52 to 57 H799 and H800
This is the early 8 inch legs H799 and H800. Note the square cut out for pilot light and clip on right leg for cable.



Alloy nacelle
This is my alloy nacelle. The legs are cracked in the centre which is weak point. Note that because it is made of cast alloy see how there is a pronounced bulge where the tubes meet the main part of the nacelle. You can see this clearly in period photos of early 1949 T100s.




H1205 right leg cable routing
This is the right leg on a bike showing cable routing. The bike is on the stand so the cable has very little curve. It has a small curve due to the cable coming out of the hole above pinch bolt hole and then continuing down to the clip on the front mudguard.



Nacelle top H1207
This is the 8 inch top. In this case the later H1207 type. The only difference between this and the H1278 is the transfers. Note that there is no hole in front of the speedo and only the left ammeter hole has the four cutouts. This makes it easy to spot in photos like on eBay. It is a bit hard to see but the cable holes are on the side. They are 1/2 inch holes and have a grommet thru them and then the cable.


Last edited by '59 Bonnie; 04/29/16 3:47 pm.

"We are "motorcyclists" & "historians" our hobby includes the research & preservation of motorcycle history. What we are doing in the research & preservation of iconic bikes is, an important part of its history & value".
#650714 - 04/29/16 9:48 pm Re: Nacelles and legs [Re: AngloBike]  
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Awesome!!!! Love it.

Ray


BSA 1969 A65F
BSA 1966 A65H
Triumph 1968 T120
Kawasaki A1R
& too many projects!
#650725 - 04/30/16 12:45 am Re: Nacelles and legs [Re: '59 Bonnie]  
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[color:#FF0000][color:#FF0000]Awe I got to add this. For those that take the trouble to read it I hope it makes sense, because it will give you a fat head ache. The last past of this is a discussion with myself...I leave it at that. What I was thinking at the tie I wrote this and what was my reason for my diction is listed here but I can't really remember. Ahg these font are giving a head ache. Good luck..

Nacelle differences and numbers for 1951 to 1959 [size:11pt]


Part numbers as taken from parts book drawings.
Remember Kill button hole for magneto bikes. No kill button used on alternator-distributor bikes.
1951 nacelle

I have used the 1951 part numbers just to have a baseline to see where the B range 500cc & 650cc nacelles come from. This is an exercise to establish which parts are interchangeable.

Drawing# name part# used on
22 left leg H656 3T/ 5T/6T/ T100
5 right leg H657 3T/ 5T/6T/ T100
54 top H618 3T/ 5T/6T/ T100

1952 nacelle

Drawing# name part# used on
22 left leg H799 5T/6T/T100
5 right leg H800 5T/6T/T100
22 top H761 5T/6T/T100

1954 1956 nacelle

Drawing# name part# used on
10 left leg H799 5T/6T/ T100/ T110
11 right leg H800 5T/6T/ T100/ T110
12 top H761 T100/ T110
12 top H917 5T/6T

1959 nacelle

Drawing# name part# used on
10 left leg H799 5T/6T/ T100/ T110/ T120
11 right leg H1205 5T/ 6T/ T100/ T110/ T120
12 top H1208 6T
12 top H1207 T100/ T110
12 top H1278 T120

Based on the numbers above and looking for parts that fit the 59 Bonneville.

10 left leg H799 6T/ T100/ T110/ T120
11 right leg H1205 6T/ T100/ T110/ T120
12 top H1278 T120

These parts have been used on earlier models with slight changes to the later parts. What those changes are I am not quite sure but I think they are minor and can easily be modified to suit any B range motorcycle from 1952 - 1959.

The nacelle top changes could be like:

holes or no holes on the sides of the nacelle top
ammeter hole sizes differences 1 vs 2
the small D size hole compared to the 2 lighting switch
length of flashers short vs long with different fixing holes
location hole for handlebars

Nacelle top part number for 59 Bonneville H1278 not used elsewhere but derived from: The odd nacelle top in this group is the 1954 6T to H917

H761 nacelle top used from 1952 to 1958 No changes

Nacelle left and right leg

H799 left leg used from 1952 to 1959 No changes
H800 right leg used from 1952 to 1958 No changes introduction of new part number H1205 maybe bracket for brake cable. So therefore H800 can be used from 1952 to 1959.

Pinch bolt hole sizes

Although the '54 to '56 500-650 nacelles carry the same part numbers, the 1955 models had a larger diameter hole for the lower pinch bolt as in1955 the pinch bolts were changed to 3/8" diameter as opposed to the previous diameter of 5/16" for 1954 and earlier.

So the one question is what is the difference between the 59 T120 nacelle top H1278 and the T100 &T110 and 6T nacelle top H1207/8 and the 52 58 5T/ T100 &T110 H761?

What is the difference between the 59 - 6T/T100/T110 & T120 left & right nacelle leg H799 & H1205 and the 52 58 - 5T/ T100/T100/T110 H799 & H800?

Therefore for motorcycles from 52 59 can use the same parts with small modifications on B range 500 & 650s. What do you think?

The nacelle started in 1949. Originally it was made with the lower section in one piece from cast alloy with only the bottom shrouds in sheet metal rolled to make the tubes. Experts disagree about exactly how many of these alloy nacelles where actually used. In the last few years I have only seen two sets of them and one them is the set a friend owns. After this early period in 1949 they changed to all pressed sheet metal of the design everyone is familiar with. The early design of H656, H657 and H618 was used from 1949 to 1951 and held a 6inch headlight. The bottom legs can easily be identified by the vertical slits below the headlight where the horn sits.

In 1952 they moved to an 8 inch headlight so the nacelle parts were upsized to accommodate this H799, H800 and H761 (other tops where used to suit different switches etc). Also the legs featured a square cut out with two bolt holes (one on each leg) so that an underslung pilot light could be fitted. From 1952 to 1955 this Lucas 517 pilot light was used. This was because the 8 inch headlights of the day had no inbuilt pilot light. In 1956 a chrome grille replaced this light and an inbuilt pilot light in the headlight reflector was used. During the use of both of these first two types of legs the right leg had an attachment "clip" for the front brake cable. It was a rolled piece of sheet metal that was spot welded onto the leg and was simply used to keep the outer cable from bending and getting caught when the forks compressed. This design was used up to and including 1957.

In 1958 the right leg changed and the clip for the cable was deleted. It was replaced by a hole drilled just above where the right side pinch bolt goes thru the nacelle and lower fork yoke. At the same time the nacelle top gained holes and grommets in each side to aid in the front brake and clutch cable routing making it smoother curves. This design was only used in 1958 and 1959 because in 1960 the duplex nacelle was changed to suit the different fork yokes and steering head angle.

[color:#000099]So the questions at the end of your document.
These parts have been used on earlier models with slight changes to the part. YES What those changes are I am not quite sure but I think they are minor and can easily be modified to suit.

The nacelle top changes could be like holes or no holes on the sides of the nacelle top or ammeter hole sizes differences or the small D size hole compared to the 2 lighting switch. YES

Part number for 59 Bonneville H1278 not used elsewhere but derived from:
H761 nacelle top used from 1952 to 1957 No side holes on nacelle top yes
H799 left leg used from 1952 to 1959 No changes yes
H800 right leg used from 1952 to 1957 No changes maybe bracket for cable bracket used up to 57 then deleted and replaced with hole to create H1205

[color:#3333FF]So the one question is what is the difference between the 59 T120 nacelle top H1278 and the T100 &T110 and 6T nacelle top H1207/8 and the 52 58 5T/ T100 &T110 H761? H761 is for BM4 ammeter and 31371 headlight switch. This changed to H1207 in 1958 for the same models but the holes in sides were added. This then changed to H1278 but only due to the transfers (Bonneville 120).

What is the difference between the 1958 and 59 - 6T/T100/T110& T120 left & right nacelle leg H799 & H1205 and the 52 57 - 5T/ T100/T100/T110 H799 & H800? Only the clip and hole

Therefore for motorcycles from 52 59 can use the same parts with small modifications. What do you think? Yes. Grind off the clip and drill a hole.



[/color][/color][/color][/size][/color]

Last edited by '59 Bonnie; 05/12/16 4:25 am.

"We are "motorcyclists" & "historians" our hobby includes the research & preservation of motorcycle history. What we are doing in the research & preservation of iconic bikes is, an important part of its history & value".
#651142 - 05/02/16 11:39 pm Re: Nacelles and legs [Re: AngloBike]  
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Deadstiffcatt Online content
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A couple of links to other nacelle threads to further the knowledge: (Make sure you scroll to the top once it loads, my Lucasism is flairing up tonight, and it is getting confusing and unwise to continue operating an electronic thing a ma bob.)

http://www.britbike.com/forums/ubbthread...3798#Post573798

http://www.britbike.com/forums/ubbthread...6302#Post566302

#651224 - 05/03/16 2:50 pm Re: Nacelles and legs [Re: AngloBike]  
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Moderator, sticky this post at once. I have spent dozens of hours and huge sums wasted talking on international phones, consulting internet etc.... this is brilliant stuff because nacelles and legs are an abominable subject!

#652306 - 05/10/16 8:33 pm Re: Nacelles and legs [Re: AngloBike]  
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Continuing along with the Nacelle topic, I felt it was time to update with perhaps a less than vague starting point.

A "nacelle" is described as a covering or enclosure, and is most often related to aircraft. In the instance of the Triumph Nacelle, we do indeed see the relationship of this enclosing cover with the front end. The basic forks, triple tree, headstock, headlight and switches all combine to create a mass of wiring and little lumps slapped onto the front of the bike. Back in the 1940's Ed Turner was a leading visionary in the world of bikes. Not only did he have keen ideas that were implemented into Triumphs of the day, he also had a good sense of artistic and marketing sense. With a dash or two of chrome in the right place, fuel tanks with graceful and lovely lines, he was able to create not only a powerful and fairly robust motorcycle, but one that also had impressive visual appeal. As motorcycles were progressing in both power and style, Mr. Turner saw the need for a machine that was also easy to care for. Part of this included simplifying the bodywork of the machine, something we begin to see with the introduction of the nacelle in 1949. (Skipping ahead a decade, one can see the continuing efforts with the "bathtub" models, dreadfully detested by many, an idea that was a bit too early for it's time in the late 50's- note the success of Honda's Goldwing series in the seventies.)

The advent of the first nacelle permitted a centralized location for switches, gauges, and speedometer in a nice tidy package above the headlight; this also covered up the handlebar mounting points. To blend this top with the front forks, a set of lowers were also made up, wrapping the headlight and exposed triple tree areas in a sheet metal package that was easy to clean with just a quick wipe with a rag, and also protected the areas behind it from collecting excessive dirt and grime. This nacelle enclosure also helped to add a little bit more space to conceal and work on the wiring, rather than shoving it all into a way too small headlight shell. Triumph was not the only manufacturer to use a nacelle enclosure; Harley used one on the Panhead with telescopic forks, as did B.S.A. and Royal Enfield to name a couple of others. Again Ed Turners' eye for style came into play, with the nacelle legs not just being tubes but having a nice swept back portion on the backside which tied to the nacelle top, the line between the top and leg on each side was given just a splash of shine with a sleek chromed flash.

It would be nice if one nacelle would fit all models, but reality always gets in the way. As the Triumph progressed in the 1950's so did improvements to the bikes including both electrical and suspension. Regarding the electrical, machines first graduated from generators to alternators, and finally to battery operated ignitions that did away with the magneto. In 1954 the alternator models were becoming available, and with that change it also brought about changes to the switches used; in turn creating the need for different layouts for the top of the nacelle and how these new switches would mount. As the 350 and 500 models began a unit type engine construction, almost all of the frame needed a revision, the nacelle for these models was also updated to a slightly smaller version. With another frame change in 1960 to the 650 models, the nacelle was again updated slightly, going as far as to use some of the same pieces incorporated into the 350 and 500 models. In 1964 a new style of front fork was released, one having external springs; this in turn led to the final change of the nacelle by not spot welding the lower nacelle tubes to the nacelle sides any longer, the lower section that covered each fork spring was now a completely separate and slightly fatter unit.

We can now see that it wasn't just random changes that affected the parts of the nacelle, but a logical following of progressive improvements to allow the nacelle to be adapted to the needs of the then current models.

Worth noting at this time is also the progression of part numbers. Just as improvements brought changes to parts, these parts would also need new part numbers. At that time, the alpha numeric system was in use, often grouping certain subassemblies into a given "alpha" for example the general frame parts would be part number F-1234 or transmission numbers would be T-1234. Starting with the first nacelle models, H was the basic "alpha" for front end parts (perhaps chosen for handlebar or headstock?) and most parts have an H prefix. See example below copied from '59 Bonnies' excellent post.

Drawing# name part# used on
22 left leg H656 3T/ 5T/6T/ T100
5 right leg H657 3T/ 5T/6T/ T100
54 top H618 3T/ 5T/6T/ T100

1952 nacelle

Drawing# name part# used on
22 left leg H799 5T/6T/T100
5 right leg H800 5T/6T/T100
22 top H761 5T/6T/T100

As one can see, as the next years model had improvements, the replacement part still had an H "alpha", but as the years increased so would the part number itself. On the other hand, if there was no need to improve one part for the following year and it had no changes, there was no need to change it's part number. For those of us restoring or playing mix and match, this knowledge is quite helpful. It is quite plausible that a bike that is a true 1957, for example, may have parts on it still using a 1950 part number if there was never a need for the factory to change the part. However the opposite side of the coin is that a true 1950 model will not have a 1957 part number on it, how could it unless it was replaced after leaving the factory? Therefore, although one is looking at a bike that appears original or stock, certain parts may have a tell tale sign that something has been changed. Since the nacelles themselves don't have part numbers stamped or cast in, knowing that Nacelle Top p/n H-1xx4 had this switch and that gauge in 1959 and I'm sitting here looking at a 1956- golly, something just ain't right.

It can also be noted that this parts numbering system works with almost all parts of the bike- simply put, the smaller or lessor the part number, the older it is. (Indeed, with changes to the engine through out the years, Triumph had to add an extra digit to the "E" alpha, note that at many parts houses there are two classification of "E" either 4 digit or 5 digit.)

As my brain has now almost turned to putty again, I'll leave you all to mull this stuff over in your head. I do realize that all this talk of part numbers is wonderful, but if you don't have the books, it ain't gonna help. So a great place to start is at Big D Cycle, they are kind enough to have almost every Triumph part book online and free to view (even with fair pictures!)

https://bigdcycle.com/triumph-parts-books/

Now, since all good stories need at least one picture, this is a slightly modified nacelle top mounted to a 1951 bike. Note genuine imitation aftermarket 2" amp gauge and cut out button hole made large enough to mount a late 1960's ignition switch.




More to come later......................

#652392 - 05/11/16 10:49 am Re: Nacelles and legs [Re: AngloBike]  
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I too am trying to piece together a '61 nacelle. Twice I have bought lowers (sides?) off eBay listed as duplex and both are about 1/8" shy of fitting the top screws in the side of the top tree once the pinch bolts are in place. Does this mean they are for 500? Text above says 500;s are "slightly smaller". I see from the parts books that the smaller twins use a different numbered lower tree. Could the pinch bolt holes be located differently? Or maybe have something to do with the different neck bearings / races used on the 500?

#652411 - 05/11/16 12:57 pm Re: Nacelles and legs [Re: tiumphdave]  
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Dave- I spent a couple hours last night going through parts books and trying to get triple tree upper and lower numbers for 1949 to 1966. Haven't been able to lay it out yet. What I did find is 1960-63 upper triple tree for 650 6t is H 1108, lower would be H1283, the 350 and 500 would be H1108 top and H1112 lower triple trees. In the case of the 1960 to 1963 nacelles, it seems that the lower pinch bolt mounting holes in the nacelle are drilled about 3/8" higher than the others.(Others being pre unit 500/650 1949 to 1959, then 1964 to 1966) Please see photo below- unit on the left is 1960-1963, note location of pinch bolt hole......


To answer your question about smaller- by smaller I mean same width from side to side, but front to back is about 3/4" shorter than the typical pre unit nacelle top.

Now I have been going crazy trying to figure out the what fits what part and have found that by the parts book and Roy Bacons' Triumph Twins book, that from 1960 to 1963 the nacelle tops were all the same size, but different part numbers due to different gauge and switch holes. When we get into the parts the nacelle mounts to, specifically the lower triple tree at the pinch bolts ad the upper triple tree at the stantion ends area, I took a look at other parts. Both the lower fork sliders and stantions for all 1960-63 350 500 and 650 nacelle models are the same part numbers, and so are top triple trees. The only thing that changes part number is the lower triple tree, for the 650 it is H1283 and for the 350/500 it is H1112. So it appears to me that these lower triple trees and how they are both made and mounted might be the key point on mounting your nacelle. Without having the actual pieces in front of me, it would seem that by the part numbers, Triumph chose to try and start a one nacelle fits all in 1960 by standardizing the same basic parts used on all models, the nacelle legs from 1960 to 1963 should fit all nacelle models (350, 500, 650) of the same time frame, but maybe they don't. (I'm surmising this part...) At this time I believe that there is indeed something different in the mounted location of the stantion pinch bolt on the lower triple trees H1283 and H 1112. Whether it is where the holes are drilled in the casting of the lower triple tree, (or how the bearing and race are mounted?) I have not determined.

Also worth noting is that on the pre unit upper triple tree 49-59 versus the unit 64-66 upper triple tree, I have been able to compare the two side by side and the mounting point for the nacelle is drilled differently between the two, so an incorrect upper triple tree can affect mounting as well.

As I was searching parts books, I did notice that the non nacelle models could have different part numbers than the nacelle models for both triple trees, could you have an incorrect triple tree that might change the mounting location of the the nacelle? Or, going by the photo, do your nacelle legs have the pinch bolt hole in the right location (again, for 1961 it should be higher, as on the left leg shown)?

Quick summary- Are all the parts correct for the same year? Too often the casting number on the triple trees is smashed with a hammer or ground off when chromed, and the differences between it and another triple tree that is non nacelle are almost impossible to spot as they cold be quite minute.

For others following, it is important to note the use of terms non nacelle models and nacelle models. As an example, using a non nacelle lower triple tree from the same year could indeed make the nacelle not line up when trying to mount it.

Last edited by Deadstiffcatt; 05/11/16 1:07 pm.
#652609 - 05/13/16 4:17 am Re: Nacelles and legs [Re: Deadstiffcatt]  
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Blank spots are where I couldn't find solid parts book or other source to confirm numbers.

The word "ALL" means every nacelle model that year used this part.
Yellow scribbling in the 1953 year model is probably a "Couldn't Find The Parts Book" statement.
I'm tired. Goodnight. Joe




#652614 - 05/13/16 4:48 am Re: Nacelles and legs [Re: Deadstiffcatt]  
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'59 Bonnie Offline
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'59 Bonnie  Offline
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TRW is also the same as:
1952 nacelle
Drawing# name part# used on
22 left leg H799 5T/6T/T100/TRW
5 right leg H800 5T/6T/T100/TRW
22 top H761 5T/6T/T100/TRW

1954 1956 nacelle
Drawing# name part# used on
10 left leg H799 5T/6T/ T100/ T110/TRW
11 right leg H800 5T/6T/ T100/ T110/TRW
12 top H761 T100/ T110/TRW
12 top H917 5T/6T/TRW

1959 nacelle
Drawing# name part# used on
10 left leg H799 5T/6T/ T100/ T110/ T120/TRW
11 right leg H1205 5T/ 6T/ T100/ T110/ T120/TRW
12 top H1208 6T/
12 top H1207 T100/ T110/TRW
12 top H1278 T120/TRW

Based on the numbers above and looking for parts that fit the 59 Bonneville.
10 left leg H799 6T/ T100/ T110/ T120/TRW
11 right leg H1205 6T/ T100/ T110/ T120/TRW
12 top H1278 T120/TRW

These parts have been used on earlier models with slight changes to the later parts. What those changes are I am not quite sure but I think they are minor and can easily be modified to suit any B range motorcycle from 1952 - 1959.


"We are "motorcyclists" & "historians" our hobby includes the research & preservation of motorcycle history. What we are doing in the research & preservation of iconic bikes is, an important part of its history & value".
#652618 - 05/13/16 5:08 am Re: Nacelles and legs [Re: '59 Bonnie]  
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Triless Online content
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OZ
Deadstiffcat and '59 Bonnie, this stuff is great ! This would have helped immeasurably a few years back when a mate wanted me to rebuild his '66 Thunderbird.
Now, this was a bit of a basket case, but the only thing he was particular about was that it must have the nacelle ! Being the last of the big Triumphs so equipped !
Yeah, well ! In my opinion, the three things that have caused the major problems in the world are the angular headed mob, the red hued inclination mob, and bloody nacelles around certain Triumph models' headlights !

#652625 - 05/13/16 5:57 am Re: Nacelles and legs [Re: Triless]  
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'59 Bonnie Offline
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Yes Joe is doing a wonderful job.

Then there is the TRW that ran from 1950 - 1965 and of cause the thing that influenced the year/ same model was the steering head angle which was changed a few times.....


"We are "motorcyclists" & "historians" our hobby includes the research & preservation of motorcycle history. What we are doing in the research & preservation of iconic bikes is, an important part of its history & value".
#655045 - 06/01/16 1:17 am Re: Nacelles and legs [Re: '59 Bonnie]  
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Many thanks to Deadstiffcatt and '59 Bonnie! This compilation represents a lot of effort and painstaking detail. Much appreciated.

#655093 - 06/01/16 10:28 am Re: Nacelles and legs [Re: AngloBike]  
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tiumphdave Online content
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seattle
Great work on that chart Joe. Anyone know why '62 models have a one year only set of lower legs?

#655125 - 06/01/16 2:56 pm Re: Nacelles and legs [Re: AngloBike]  
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Maui Hawaii
I'm not seeing any changes for 62 across the model year for lower legs, even assuming that you mean lower nacelle legs, or lower fork legs.

However, there is a listing for sidecar forks with longer lower legs(the longer length is an assumption based on what I've seen) only for '62 and only for 6T.

Cheers,

Bill


Bikes
1974 Commando
1985 Honda Nighthawk 650
1957 Thunderbird/T110 "Flying Tiger"
Antique Fans: Loads of Emersons (Two six wingers) plus gyros and orbiters.
#655254 - 06/02/16 7:55 am Re: Nacelles and legs [Re: AngloBike]  
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Steve Highfield Offline
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Thank you Deadstiffcatt.. That is going to be a big help when i dive into the restoration on my 58 Tbird


1958 6T Thunderbird
1970 T100c
1975 T160 Trident
#655263 - 06/02/16 9:30 am Re: Nacelles and legs [Re: AngloBike]  
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tiumphdave Online content
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seattle
Bill, I see now that the sliders I'm looking at, H1322/ 1323, aren't all '62 models, only 6T and T110.I haven't checked the parts book yet to see if they also show up for t120 models, but on Joes' chart they only apply to 1962 650 bikes. I'm curious.

#655288 - 06/02/16 2:42 pm Re: Nacelles and legs [Re: AngloBike]  
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HawaiianTiger Online content
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Maui Hawaii
According to the addendum (parts list only for '62) those fork legs were accessory parts fitted for sidecar use. Otherwise, the forks fitted to the other bikes were used, as far as I can tell.

And the parts list no longer served the T110 which was discontinued the previous year.

Cheers,

Bill


Bikes
1974 Commando
1985 Honda Nighthawk 650
1957 Thunderbird/T110 "Flying Tiger"
Antique Fans: Loads of Emersons (Two six wingers) plus gyros and orbiters.
#655379 - 06/03/16 6:56 am Re: Nacelles and legs [Re: tiumphdave]  
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'59 Bonnie Offline
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'59 Bonnie  Offline
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Rotorua, New Zealand
Originally Posted By tiumphdave
Great work on that chart Joe. Anyone know why '62 models have a one year only set of lower legs?


Change in head stock angle for 1959 at 64 1/2 degrees to 67 in 1960 then back down to 65 degrees for 1961 - 1965

1959 front frame F4414 @ 64 1/2 degree used on 6T, T100, T110, TR6 & T120

1960 front frame F4608 @ 67 degrees
1961 -1962 frame F4846 @ 65 degrees


"We are "motorcyclists" & "historians" our hobby includes the research & preservation of motorcycle history. What we are doing in the research & preservation of iconic bikes is, an important part of its history & value".
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