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1967 A65L fork install on trees #776182
06/12/19 1:31 am
06/12/19 1:31 am
Joined: Oct 2011
Posts: 24
az
J
jesslp Offline OP
BritBike Forum member
jesslp  Offline OP
BritBike Forum member
J

Joined: Oct 2011
Posts: 24
az
Hi everyone

I have a 67 lightning I’ve been restoring for some time. I’ve rebuilt the forks and I’m having a very difficult time getting the forks in the triple trees. I slide the fork into the tree, I’ve got the threaded rod through the top tree and the cap nut threaded on to the rod with a few turns but I can’t get the fork to seat up into the top tree so I can get some thread action onto the fork tube without the bottom leg collapsing. There is nothing to hold on to. The spring is there covering the fork tube. I know it fits up into the top tree cause I do it without the fork ear. It’s just that with the fork ears, the springs I can’t grab the fork tube to get it up into the top tree. What is the trick.

I truly appreciate everyone’s help.

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Re: 1967 A65L fork install on trees [Re: jesslp] #776184
06/12/19 2:12 am
06/12/19 2:12 am
Joined: Aug 2001
Posts: 4,737
Owego, NY, USA
Mark Z Offline
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Mark Z  Offline
BritBike Forum member

Joined: Aug 2001
Posts: 4,737
Owego, NY, USA
There is a BSA "special tool" for this, or many owners make their own. The tool does essentially what the cap would do if you could get a good enough purchase on the stanchion tube, but the tool has a longer reach. I'm sure there are others here who can describe the tool better. When I did mine, I installed the stanchion tubes first, so I was able to drive the tubes into place from the bottom. Then I assembled the fork legs onto the stanchion tubes (I.e., so I never had to make the tool).


Mark Z

'65(lower)/'66(upper, wheels, front end, controls)/'67(seat, exhaust, fuel tank, headlamp)/'70(frame) A65 Bitsa.
Re: 1967 A65L fork install on trees [Re: jesslp] #776186
06/12/19 2:20 am
06/12/19 2:20 am
Joined: Oct 2011
Posts: 24
az
J
jesslp Offline OP
BritBike Forum member
jesslp  Offline OP
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J

Joined: Oct 2011
Posts: 24
az
Ok, I’m going to make that tool. Thank you Mark

Re: 1967 A65L fork install on trees [Re: jesslp] #776199
06/12/19 3:50 am
06/12/19 3:50 am
Joined: Dec 2002
Posts: 3,158
arkansas
L
leon bee Offline
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leon bee  Offline
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L

Joined: Dec 2002
Posts: 3,158
arkansas
The broomstick method should work. Another way is with visegrip welding clamps: compress the spring some while inserting the clamps thru spring about half way down- clamp on the tube. That usually gets you enough. I never had to make a tool until I had a bike with full length shrouds rather than rubber gaiters.

Re: 1967 A65L fork install on trees [Re: jesslp] #776200
06/12/19 4:07 am
06/12/19 4:07 am
Joined: Oct 2011
Posts: 24
az
J
jesslp Offline OP
BritBike Forum member
jesslp  Offline OP
BritBike Forum member
J

Joined: Oct 2011
Posts: 24
az
Leon, I tried thin vice grips, didn’t work. I thought about making a small spring compressor to compress the spring enough th get my hand on the fork tube to be able to push it up. Tell me about the broomstick method, otherwise I’ll take Marks advice and make a tool.

I appreciate everyone’s help.

Re: 1967 A65L fork install on trees [Re: jesslp] #776202
06/12/19 4:25 am
06/12/19 4:25 am
Joined: Dec 2002
Posts: 3,158
arkansas
L
leon bee Offline
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leon bee  Offline
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L

Joined: Dec 2002
Posts: 3,158
arkansas
The tool is easy enough if you have a fork cap rusty enough to sacrifice. The "broomstick" is even mentioned in some of the old books. I just took a scrap of 2x4, ripped it to roughly fork tube size and then tapered the end. Whittle on the end until you can insert into the tube and thread it in there a little ways then pull up gently.

Re: 1967 A65L fork install on trees [Re: jesslp] #776208
06/12/19 6:26 am
06/12/19 6:26 am
Joined: May 2013
Posts: 5,468
West Yorkshire
Allan Gill Offline

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Allan Gill  Offline

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Joined: May 2013
Posts: 5,468
West Yorkshire
I use an old cap with the corners ground off and a hole drilled through the centre. Then some threaded rod bolted into it so you have something to pull on.

You’ll want to spread the bottom clamp with a wedge of some sort. Also if the yokes have been freshly painted then you may want to scrape away some of the paint where the stanchion will run.


beerchug
Re: 1967 A65L fork install on trees [Re: jesslp] #776455
06/15/19 12:13 am
06/15/19 12:13 am
Joined: Oct 2011
Posts: 24
az
J
jesslp Offline OP
BritBike Forum member
jesslp  Offline OP
BritBike Forum member
J

Joined: Oct 2011
Posts: 24
az
I’m going to make the tool. I want to thank everyone for their advice and ideas. I’ve been trying to restore this BSA for 25 years and hopefully I’ll finish it and ride it. Thanks again

Re: 1967 A65L fork install on trees [Re: jesslp] #776457
06/15/19 1:50 am
06/15/19 1:50 am
Joined: Aug 2001
Posts: 4,737
Owego, NY, USA
Mark Z Offline
BritBike Forum member
Mark Z  Offline
BritBike Forum member

Joined: Aug 2001
Posts: 4,737
Owego, NY, USA
I thought I held the record for the longest rebuild/restore. Hope you had something to ride all this time!


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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