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Re: My Rat-Trap of a '71 BSA OIF Lightning [Re: celtrock] #764555
02/05/19 2:48 am
02/05/19 2:48 am
Joined: Jan 2015
Posts: 46
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celtrock Offline OP
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celtrock  Offline OP
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Went through my Bits Bin. Here are some more for your identifying pleasure...

I ended up cleaning the tachometer below the larger Lucas box and the speedometer bottom right. Kept the rest as is for now.
Anyone know the vintage of these? Probably not much to do for cracked glass...

[Linked Image]

After

[Linked Image]

Top end bits

[Linked Image]

No clue

[Linked Image]


You know, I'm sick of following my dreams, man.
I'm just going to ask where they're going and hook up with 'em later.
-Mitch Hedberg
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Re: My Rat-Trap of a '71 BSA OIF Lightning [Re: celtrock] #764577
02/05/19 1:03 pm
02/05/19 1:03 pm
Joined: Aug 2001
Posts: 4,347
argyll. scotland, uk
gavin eisler Online content
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gavin eisler  Online Content
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Joined: Aug 2001
Posts: 4,347
argyll. scotland, uk
You need a 3:1 tach , the 4:1 mounted in the pic will read wrong, the grey faced clocks are off earlier models, the bottom pic shows the rocker arm thackeray ( spring ) washers and plain washers they mount on the rocker spindles. 3:1 tachs are not nearly as common as 4:1 . , your bike had black face clocks originally , the gray faces are the same inside just different cosmetics.


71 Devimead A65 750
56 Norbsa 68 Longstroke A65
Cagiva Raptor 650
MZ TS 250
The poster formerly known as Pod
Re: My Rat-Trap of a '71 BSA OIF Lightning [Re: gavin eisler] #764629
02/06/19 2:02 am
02/06/19 2:02 am
Joined: Jan 2015
Posts: 46
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celtrock Offline OP
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celtrock  Offline OP
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Right you are. Thanks Gavin. If you ever need a place to stay in the states you hit me up ;-)

The tach in the picture far left is a 3:1 though it has a cracked glass. I'll either have to learn to live with it or figure out how to replace it.


You know, I'm sick of following my dreams, man.
I'm just going to ask where they're going and hook up with 'em later.
-Mitch Hedberg
Re: My Rat-Trap of a '71 BSA OIF Lightning [Re: celtrock] #764634
02/06/19 3:30 am
02/06/19 3:30 am
Joined: Aug 2001
Posts: 4,347
argyll. scotland, uk
gavin eisler Online content
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gavin eisler  Online Content
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Posts: 4,347
argyll. scotland, uk
The bezel holding on the glass is crimped on, I have tried to remove these, without the proper tool its not easy, and you will probably distort it a little but it is possible, gently work round the seam with a fine blade , once you get a gap use a thicker blade. The seam is hidden by the mounting rubber, so you can get away with some collateral damage and hide your shame. A decent glass shop could cut you a new piece using the old bits as a pattern. There are folks out there , Nissonger I think in the states ,who can refurb these, check the price first. Thanks for billet offer. The 4 :1 tachs are probably triumph types.


71 Devimead A65 750
56 Norbsa 68 Longstroke A65
Cagiva Raptor 650
MZ TS 250
The poster formerly known as Pod
Re: My Rat-Trap of a '71 BSA OIF Lightning [Re: celtrock] #764664
02/06/19 3:42 pm
02/06/19 3:42 pm
Joined: Apr 2005
Posts: 1,754
Mississauga, Ontario.
A
Adam M. Offline
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Adam M.  Offline
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A

Joined: Apr 2005
Posts: 1,754
Mississauga, Ontario.
Yes and yes, however you can buy a kit consisting of a glass with a new bezel + necessary seals which are mostly gone in these old instruments.
Not from Walridge, because his kit has a bezel too short.
3:1 speedos show up regularly on american eBay, but I'd buy a copy for $70 which is longer but fits your 71 rubber covers.
Their reliability is good and it's hit or miss with old original.

Last edited by Adam M.; 02/06/19 3:43 pm.
Re: My Rat-Trap of a '71 BSA OIF Lightning [Re: Adam M.] #764668
02/06/19 4:36 pm
02/06/19 4:36 pm
Joined: May 2013
Posts: 5,287
West Yorkshire
Allan Gill Offline

BritBike Forum member
Allan Gill  Offline

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Joined: May 2013
Posts: 5,287
West Yorkshire
Originally Posted by Adam M.
Yes and yes, however you can buy a kit consisting of a glass with a new bezel + necessary seals which are mostly gone in these old instruments.
Not from Walridge, because his kit has a bezel too short.
3:1 speedos show up regularly on american eBay, but I'd buy a copy for $70 which is longer but fits your 71 rubber covers.
Their reliability is good and it's hit or miss with old original.



Just the information I was looking for on my build Adam, at around £60 for a pattern unit I’m quite prepared to pay that even if they only last a few years As opposed to buying an old instrument and then trying to find someone decent to rebuild it. The only decent guy I had for these has now retired. He used to build them way back when and was brilliant. He was always conscientious and the instruments were spot on for a good few years. But as long as they fit the OIF rubber cups I’ll be quite happy


beerchug
Re: My Rat-Trap of a '71 BSA OIF Lightning [Re: celtrock] #764687
02/06/19 7:07 pm
02/06/19 7:07 pm
Joined: Sep 2004
Posts: 956
Farnham, Surrey, UK
gunner Offline
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gunner  Offline
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Posts: 956
Farnham, Surrey, UK
I've rebuilt a couple of Smiths speedos using info from a book by author Graham Blighe see This Link, results were ok but you do need to factor in the cost of a new bezel and glass which are also available on eBay.

Generally I have found that old speedos found in spares collections have faults and will need rebuilding sooner rather than later. The cost of a professional rebuild is expensive and home rebuilds are fiddly and time consuming so not worthwhile unless you crave originality.

The pattern speedos and tachos are actually very good and much better quality than Smiths in my opinion. I have been using them on my B44, A65 and Norton for several years without issue and for the money it's a no brainer.

Regarding the harness cover you can get black braided harness covers with a slit which allows fitting over the existing harness and wires, see This Link. I've had good luck with these braided covers which can be used to renovate old harnesses or when making new ones. The slit allows the cover to be opened up and fitted over existing wires and also helps if new wires need adding.

Last edited by gunner; 02/06/19 7:11 pm.

1968 A65 Firebird
1967 B44 Shooting Star
1972 Norton Commando
Re: My Rat-Trap of a '71 BSA OIF Lightning [Re: kurt fischer] #764759
02/07/19 7:55 pm
02/07/19 7:55 pm
Joined: Jan 2015
Posts: 46
Vermont
celtrock Offline OP
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celtrock  Offline OP
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Originally Posted by kurt fischer

For BSA parts, I call British Cycle Supply -- call them up, they ship from Limestone, Maine, parts at your door next day.



Called him on Tuesday, too late for him to get stuff in the mail that day but said he'd get it out yesterday. I was going to make a brake rod but figured for $17 I'd just order it and save myself the hassle. Got all the rubbers coming for the battery box, fender mount and seat bumpers. We have a "snow" day here due to ice and generally terrible weather and I've been waiting for the mail man all day but alas... no sign! So instead I redid my seat. I think it came out well! I'll post pictures...

Last edited by celtrock; 02/07/19 7:58 pm.

You know, I'm sick of following my dreams, man.
I'm just going to ask where they're going and hook up with 'em later.
-Mitch Hedberg
Re: My Rat-Trap of a '71 BSA OIF Lightning [Re: celtrock] #764760
02/07/19 8:45 pm
02/07/19 8:45 pm
Joined: Jan 2015
Posts: 46
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celtrock Offline OP
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celtrock  Offline OP
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So my seat was just about as crusty as the bike... didn't even come on the bike but rather sitting on top of a tote with the tank. The pan felt pretty solid though there were signs of rust, a bit of damage but I couldn't really tell until I got that seat cover off.

BEFORE

[Linked Image]

[Linked Image]

[Linked Image]


After removing the cover I found the entire lip of the seat pan was pretty corroded. That lip was already pretty thin due to the tabs being punched out to hold the seat cover on. Having that vinyl wrapped around it just seemed to hold in all the moisture which damaged the metal. So I cleaned it up best I could and let it soak overnight in EvapoRust. A gallon doesn't go very far with an object this big, I put it in a giant tote but couldn't really get the pan fully immersed. I spent the evening tilting and sloshing the whole thing around. When I checked it in the morning I was surprised to find that it actually came out pretty well despite it all. Gave it a rinse in hot water, dried it, scraped a bit more rust out and painted it with black brake caliper paint. It's the only thing I had and figured it would work just fine.

I didn't like the idea of wrapping new seat upholstery over the sharp, jagged metal of the edge and wracked my brain to figure out what I could do. A friend of mine suggested that Flex Tape stuff... or Gorilla tape. As a guy who plays in a band I hate it anytime anybody mentions Gorilla tape. That stuff shouldn't be put anywhere NEAR musical equipment. It's Gaffer's tape all the time for us. But in this case he was right. Gorilla tape was just what I was looking for. I pulled some off, cut it down the middle and carefully folded it over the edges. The stuff is nice and sticky, thick enough to be protective and I don't have to worry much about it coming off as the upholstery is going to wrap around it anyway. I felt pretty confident pulling that fabric tight over the Gorilla tape.

[Linked Image]

[Linked Image]

[Linked Image]

The issue with the original cover being in such rough shape is that the foam in all the exposed areas had turned to a substance that resembled hard, dry brown sugar. I proceeded to cut it off with my wife's cloth scissors and replaced the bits with sections cut from a couch cushion I kept up in the attic in case I ever needed dense foam. Finding a use for this stuff certainly isn't going to help my penchant for hoarding! A bit of spray adhesive held it into place while I fit the cover. I didn't worry too much about making it perfect knowing that the upholstery would hold it all down.

[Linked Image]

[Linked Image]

[Linked Image]

So then came the scary part; fitting the new seat cover. After convincing myself that it couldn't turn out worse than it was I commenced positioning and stretching. I did a couple of tabs at a time around the perimeter of the seat and once I got it fairly lined up I pulled like crazy. This was NO easy job. Actually pretty stressful for me. I'm pretty happy with how it came out, I know it isn't perfect but it works for my needs. Seat cover cost something like $45 on eBay, probably could have found a seat for that but I feel better knowing that I got rid of the rotted foam and stopped rust production in the seat pan. As this won't get much weather (if any) I can feel good knowing it will last a while longer.

[Linked Image]

[Linked Image]

[Linked Image]

[Linked Image]

[Linked Image]

I got new SS bolts and washers to attach the brackets with and next I'll attach it to the bike. That is after I get my shipment of rubber from Maine. Post Office probably couldn't make it up our ice-rink of a driveway so maybe they'll be here tomorrow. Fingers crossed!


You know, I'm sick of following my dreams, man.
I'm just going to ask where they're going and hook up with 'em later.
-Mitch Hedberg
Re: My Rat-Trap of a '71 BSA OIF Lightning [Re: celtrock] #764774
02/07/19 9:53 pm
02/07/19 9:53 pm
Joined: Aug 2001
Posts: 7,428
Vermont
Jon W. Whitley Online content

BritBike Forum member
Jon W. Whitley  Online Content

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Posts: 7,428
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Right on Aron, the seat looks awesome !


Jon W.


1957 6T Thunderbird 650
1968 T100R Daytona 500
1971 TR6R Tiger 650
1970 BSA A65F 650
1955 Tiger 100 - Project

Re: My Rat-Trap of a '71 BSA OIF Lightning [Re: Jon W. Whitley] #765141
02/11/19 6:43 pm
02/11/19 6:43 pm
Joined: Jan 2015
Posts: 46
Vermont
celtrock Offline OP
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celtrock  Offline OP
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Thanks Jon! I put it off for a while because I was a bit nervous but was able to sit on my bike for the first time. The folks who warned me that these are tall bikes weren't kidding! I'll have to de-rust the tank so I can put that on as well and get a real feel for it. Before that though I'm working on the headlight shell. Which brings me to my next question:

How on Earth does one get those indicator lights out of the shell without destroying them? How does one change the lightbulbs in them? I've a LOT of de-rusting to do and it's difficult with them still in and the wires still attached to the right one (as you look at it from the inside). The other two have wires that detach but not this one!


You know, I'm sick of following my dreams, man.
I'm just going to ask where they're going and hook up with 'em later.
-Mitch Hedberg
Re: My Rat-Trap of a '71 BSA OIF Lightning [Re: celtrock] #765187
02/12/19 10:59 am
02/12/19 10:59 am
Joined: Aug 2001
Posts: 4,347
argyll. scotland, uk
gavin eisler Online content
BritBike Forum member
gavin eisler  Online Content
BritBike Forum member

Joined: Aug 2001
Posts: 4,347
argyll. scotland, uk
The idiot lights lens holders push out from inside to out, the plastic OD is swollen to grip the bucket shell, to remove the lamps pull the lamp tails they are also a friction fit. . A skoosh of WD 40 or similar will help.


71 Devimead A65 750
56 Norbsa 68 Longstroke A65
Cagiva Raptor 650
MZ TS 250
The poster formerly known as Pod
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