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#646101 - 03/28/16 9:04 am Re: new engine [Re: lemans]  
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lemans Offline
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lemans  Offline
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netherlands
started today with axial end float/play
straightforward task: mount crankshaft in cases, measure end-float. insert spacer acc to calculation. measure end-float. finished.

still there is some voodoo involved. first measurement 0,67mm. inserted 0,65mm spacers. second measurement 0,07mm end float. hmm somewhere found another 0,05mm play. added an extra 0,05mm spacer. third measurement 0,07mm float. hmmmm, cases are made of putty. added more spacers and am satisfied at 0,04mm with the thought of putting the cases together with ducati superbond liquid gasket.

reg A




Last edited by lemans; 01/08/17 1:05 pm.
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#646167 - 03/28/16 5:06 pm Re: new engine [Re: lemans]  
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gavin eisler Online content
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gavin eisler  Online Content
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argyll. scotland, uk
Hi Anne, nice progress, in the pic below you can see the Devimead solution for lubrication of the Timing side bearing, the original pressure feed is blanked and a small cavity is created on the top side of the bearing boss allowing oil to drip into the bearing.


71 Devimead A65 750
56 Norbsa 68 Longstroke A65
Cagiva Raptor 650
MZ TS 250
The poster formerly known as Pod
#646176 - 03/28/16 5:38 pm Re: new engine [Re: lemans]  
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lemans Offline
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netherlands
hi Gavin, that is indeed a clever solution, being a needle roller the dripfeed is more than enough. As you can see in my earlier posts I used a scrub srew with a 1mm orifice. Same setup as with the old engine which lasted some 32 years/ 12000 miles. Regards A

see post 500026 and just follow the links

Last edited by lemans; 03/28/16 5:50 pm.
#680466 - 01/08/17 1:02 pm Re: new engine [Re: lemans]  
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lemans Offline
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netherlands
been a while but this christmass the new engine is work in progress.
solved the axiaal end float voodoo, made a new bearing out of some phosphor bronze.
in the end it is just a 5,25 mm thick slab of bronze, milled to the correct dimensions. end float is now 0,04 mm





next jobs on the list are:
1. camshaft
2. the SRM-Oilpump
3. gearbox, pity the five-speed from Scotland isn't available yet so have to resort to the four-speed.

regards A


Last edited by lemans; 01/08/17 3:14 pm.
#680496 - 01/08/17 3:59 pm Re: new engine [Re: lemans]  
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JER.Hill Online content
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JER.Hill  Online Content
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Forfar, Scotland
Hi Anne

Nice to see your moving forward again. With regards to the 5 speed clusters, I've been surprised by the lack of interest, other than myself the other two which I know are in use, Mark Parker and Gavin Eisler are happy with the performance, of the 11 sets sold others don't really give you much feed back.

Hopefully your post can generate a little more interest, at the moment there are your self and four other who have shown an interest. I need to order a batch of ten, so if anyone is interested PM here or get in touch.

regards

John

#680502 - 01/08/17 4:29 pm Re: new engine [Re: lemans]  
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lemans Offline
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netherlands
well the five-speeder can be exchanged with the engine in the frame, so there's no real hurry yet
still..... I want to shift one more time when they don't expect it.

the bike used to be run two-up and then the four-speed hasn't the best spaced ratio's.
future use is again two-up
regards A

#684593 - 02/11/17 8:53 am Re: new engine [Re: lemans]  
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lemans Offline
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what better way to spend a snowy saturday morning




Last edited by lemans; 02/11/17 8:54 am.
#701030 - 07/07/17 2:02 pm Re: new engine [Re: lemans]  
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lemans Offline
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[censored] photobucket

#701031 - 07/07/17 2:03 pm Re: new engine [Re: lemans]  
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lemans Offline
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cool this auto-censor-function

see if it works with this one

ooops Photobucket

Last edited by Allan Gill; 07/11/17 3:27 pm. Reason: This is a family site ;)
#707812 - 09/09/17 11:37 am Re: new engine [Re: lemans]  
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lemans Offline
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netherlands
progress with the new engine is slow, very slow. with the upcoming winter season the objective is to have all components ready.

and now the camshaft. I purchased a 90-drg camshaft a couple of years ago. and it is not straight. although new the complaining period is long past and I'm having a new one made at the local camshaft-shop

http://www.hurricaneracing.nl/

question now is:

are the profiles for inlet- and exhaust-cam identical?.

regards Anne

#707898 - 09/10/17 7:25 am Re: new engine [Re: lemans]  
Joined: Jan 2014
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NickL Online content
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Aus
Originally Posted by lemans
progress with the new engine is slow, very slow. with the upcoming winter season the objective is to have all components ready.

and now the camshaft. I purchased a 90-drg camshaft a couple of years ago. and it is not straight. although new the complaining period is long past and I'm having a new one made at the local camshaft-shop

http://www.hurricaneracing.nl/

question now is:

are the profiles for inlet- and exhaust-cam identical?.

regards Anne


It depends which cam you have. The standard 'spitfire' form is different.
I think the SRM race cam is the same, but you would have to check.



#708184 - 09/12/17 4:48 pm Re: new engine [Re: NickL]  
Joined: May 2013
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Allan Gill Offline
Allan Gill  Offline



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Posts: 4,533
Rotherham - S. Yorkshire
Originally Posted by NickL


It depends which cam you have. The standard 'spitfire' form is different.



I think this also alters depending on if its an original cam (to which I think your referring) or a remanufactured item, which I have seen lift heights and duration different to that of the factory item (and different to other makers versions of the same cam)

The SRM race cam as far as 360 degree motors are concerned is a good cam.


beerchug
#708243 - 09/13/17 9:29 am Re: new engine [Re: Allan Gill]  
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lemans Offline
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netherlands
Originally Posted by Allan Gill
[quote=NickL]

The SRM race cam as far as 360 degree motors are concerned is a good cam.


I do think so but where can I find the profiles for the inlet- and exhaustcam.
I do not think they are the same.

regards Anne

#708249 - 09/13/17 11:46 am Re: new engine [Re: lemans]  
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NickL Online content
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Aus
I think a little misunderstanding here....,

The Classic 'spitfire' form has different inlet and exhaust profiles/forms.
The SRM race cam uses the same form on inlet and exhaust. It is similar to the T140 inlet profile.

The guy who is making your cam will be able to copy the forms/profiles from your original quite easily.
The guy who used to make my cams copied various profiles for people if he did not already have them on file.
Example, he copied a Dunstall exhaust and selected Chevvy inlet profiles for my A65 race cam, which worked very well on the 80x90 76deg engine.



#708581 - 09/15/17 9:12 pm Re: new engine [Re: lemans]  
Joined: Jul 2012
Posts: 398
Dave T Offline
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Dave T  Offline
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Fergus, Ontario, Canada
It seems I can no longer view the images on the forum threads unless I fork over money to photobucket to upgrade my account. Or am I doing something wrong?

#708584 - 09/15/17 9:21 pm Re: new engine [Re: lemans]  
Joined: May 2005
Posts: 3,754
shel Online content
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shel  Online Content
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ohio
No, Dave you have to pay money to upload your own photos from photobucket, you still won't be able to see others photos unless the poster of those photos pays the ransom too


When given the choice between two evils I picked the one I haven't tried before
#708876 - 09/18/17 12:08 pm Re: new engine [Re: shel]  
Joined: Apr 2007
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BrizzoBrit Offline
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BrizzoBrit  Offline

Life member

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Posts: 721
Brisbane, Australia
Go to BritBike FAQ.

Look at the photobucket ransom post by Andy Higham.

If you use Chrome as your browser you can install the app mentioned that shoves it right up Photo*uckits backside and allows you to view the images.

It works!!

Ray


BSA 1969 A65F
BSA 1966 A65H
Triumph 1968 T120
Kawasaki A1R
& too many projects!
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