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A65 fork seal cups? #517202
12/03/13 12:40 am
12/03/13 12:40 am
Joined: Nov 2010
Posts: 725
Sacramento California
R
Rusty Goose Offline OP
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Rusty Goose  Offline OP
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R
Joined: Nov 2010
Posts: 725
Sacramento California
Here's a question for the gurus- the fork seal cup on my '66 Lightning is the short type, on my '67 it is the longer type, which it correct? Or is that just part of the differences between the years?

I made a tool to fit my '66 when I rebuilt its forks. When I went to use it on my new project I found that it appeared to have shrunk!


1967 A65 Lightning
1967 Triumph T20 Mountain Cub
1967 Moto Guzzi V7
1969 B44 Victor Special
1966? Royal Enfield Interceptor
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Re: A65 fork seal cups? [Re: Rusty Goose] #517208
12/03/13 4:27 am
12/03/13 4:27 am
Joined: May 2013
Posts: 4,671
Rotherham - S. Yorkshire
Allan Gill Online happy
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Allan Gill  Online Happy
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Joined: May 2013
Posts: 4,671
Rotherham - S. Yorkshire
67 type is longer and uses the metal straps to hold the gaiter. The 68' gaiter has a recess for the fork ear cut into it, and a rim on the inside of the lower part ,its the big metal O thats on the 68 type fork seal holder which stops the gaiter from riding up.

AFAIK everything from A10's to pre 68 A65's should have the long oil seal holders fitted, only 68+ are different.


beerchug
Re: A65 fork seal cups? [Re: Rusty Goose] #517243
12/03/13 12:08 pm
12/03/13 12:08 pm
Joined: Nov 2010
Posts: 725
Sacramento California
R
Rusty Goose Offline OP
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Rusty Goose  Offline OP
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R
Joined: Nov 2010
Posts: 725
Sacramento California
Thanks Allan.


1967 A65 Lightning
1967 Triumph T20 Mountain Cub
1967 Moto Guzzi V7
1969 B44 Victor Special
1966? Royal Enfield Interceptor
Re: A65 fork seal cups? [Re: Rusty Goose] #517246
12/03/13 12:24 pm
12/03/13 12:24 pm
Joined: Feb 2012
Posts: 127
northern B.C.Canada
furymalc Offline
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furymalc  Offline
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Joined: Feb 2012
Posts: 127
northern B.C.Canada
My 66 project has the short seal holders,don't know the part number,
does anyone sell the short type? all the ones I have seen are the long type.

Cheers
Malc

Re: A65 fork seal cups? [Re: Rusty Goose] #517248
12/03/13 12:29 pm
12/03/13 12:29 pm
Joined: Dec 2004
Posts: 9,063
Scotland
kommando Online content
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kommando  Online Content
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Joined: Dec 2004
Posts: 9,063
Scotland
Sure there is more than 2 types for heavy duty forks. I know of (because they are in the workshop) a short type with no lip or ring, long type with no lip or ring, and long with ring, no doubt there are others.

Re: A65 fork seal cups? [Re: Rusty Goose] #517251
12/03/13 1:30 pm
12/03/13 1:30 pm
Joined: Jan 2006
Posts: 3,321
Medford, Oregon
Gary E Offline
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Gary E  Offline
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Joined: Jan 2006
Posts: 3,321
Medford, Oregon
As Kommando says.

And, use the long style and put the fork rubbers where you want them. Typically, with the short style, the fork rubbers are stretched out farther, thus, don't last quite as long before they split.


1967 BSA Wasp
1967 BSA Hornet (West Coast Model)
1967 BSA Hornet (East Coast Model)
1968 BSA Firebird Scrambler
1968 BSA Spitfire Mark IV
Re: A65 fork seal cups? [Re: Rusty Goose] #517259
12/03/13 2:27 pm
12/03/13 2:27 pm
Joined: Jun 2009
Posts: 62
Texas
B
bandit Offline
BritBike Forum member
bandit  Offline
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B
Joined: Jun 2009
Posts: 62
Texas
As to the splitting.....try keeping some WD/40 on the rubber boots, periodically, something in the stuff that prolongs rubber from drying out....always worked for me.


69 Lightning
71 BMW R75/5
57 Cushman
74 MGB

So it's every hand to his rope or gun,
Quick's the word, Sharp's the Action.....
Re: A65 fork seal cups? [Re: Rusty Goose] #517324
12/03/13 9:28 pm
12/03/13 9:28 pm
Joined: Jan 2006
Posts: 3,321
Medford, Oregon
Gary E Offline
BritBike Forum member
Gary E  Offline
BritBike Forum member
Joined: Jan 2006
Posts: 3,321
Medford, Oregon
WD/40 hasn't worked for me.


1967 BSA Wasp
1967 BSA Hornet (West Coast Model)
1967 BSA Hornet (East Coast Model)
1968 BSA Firebird Scrambler
1968 BSA Spitfire Mark IV
Re: A65 fork seal cups? [Re: Rusty Goose] #517339
12/04/13 1:05 am
12/04/13 1:05 am
Joined: Aug 2001
Posts: 4,254
Owego, NY, USA
Mark Z Online content
BritBike Forum member
Mark Z  Online Content
BritBike Forum member
Joined: Aug 2001
Posts: 4,254
Owego, NY, USA
As for the tool not reaching, you should be able to turn them down by hand or with the aid of a strap wrench. If you use a strap wrench, be sure to use it right at the bottom of the seal holder where it's strong, so as not to crush the upper hollow part.

Another good upgrade is to find O-rings that fit the groove at the bottom of the threads on the fork leg. This works way better than the prescribed "#5 cotton twine" seal, but can only be implemented before the seal holders go on.


Mark Z

'65(lower)/'66(upper, wheels, front end, controls)/'67(seat, exhaust, fuel tank, headlamp)/'70(frame) A65 Bitsa.

Moderated by  Allan Gill, Jon W. Whitley 


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