I was in the garage tonight installing some new steering bearings, and when it came time to install the forks, I was dreading it. Last time I did it, I used a broom stick with some tape to make it tight. What a pain.
Then I remembered Gunk suggested a bolt with some rubber washers. I've got lots of stuff in my garage, so I found a 10" bolt, four garden hose washers, two flat washers, one lock washer and two nuts....and voila...I've got a BSA fork tube puller a la Gunk. The garden hose washers are the perfect size, and with three turns of the nut, the washers expanded enough to haul the forks through and tighten them with the bottom tree. Who can ask for anything more????
Gunk...thanks for saving me countless hours of mental pain and frustration....I owe you a beer or two.
Help. I enjoy posts like this but......what does it do????? I just put new fork seals in my T140. Also just put new steering head bearings in my 441BSA (with CZ motocross forks) and did not seem to lack anything like this that would help. Thanks
Stop the insanity.
Re: Fork Tube Puller a la Gunk#54048 05/04/074:53 pm05/04/074:53 pm
I made a tool for pulling my fork tubes in with the fork stem of an old ten-speed bike. I got a foot and a half of ready-rod and attached it to an old stem that I found. The bike stem (what holds the handle bars to the forks) has a wedge shaped bottom nut which spreads when you tighten the top bolt. I just slid it down as far as I wanted into my Triumph fork tubes and tightened the top bolt and wound a nut down down on the ready rod - effectively a puller. Jackd
Re: Fork Tube Puller a la Gunk#54049 05/04/075:11 pm05/04/075:11 pm
I've been working on my old Ceriani rr forks for the flattracker and having hell....
So is this tool to pull the fork tubes up into the trees? The Tri forks have the tapered top on the fork tube. I'm having trouble sliding my Ceriani fork tube up through the triple clamp on one side (not tapered) and I'm wondering if something like this would help.
Do you compress the nut on the long bolt until the washers squish out and jam into the fork tube threads, then pull it up thought the triple? Sounds reasonable...
I swear that doing the old seals on these Cerianis was one of the hardest things I've had to do on an old bike... Galled in for 30 years..UGH!
That's exactly how both of these pullers work. I was fighting against my fork springs so I went with the ready-rod, instead of the smooth shaft that Gunk has. His puller, in my opinion would require a very strong man to overcome the resistance that the fork tubes have as they enter the fork clamps - possibly a two man job. My puller made it a one man job and you could overcome any mechanical resistance easily. My bike is gone but I still have the puller. Keep it for the next project. Jackd
Re: Fork Tube Puller a la Gunk#54053 05/04/076:28 pm05/04/076:28 pm
Kyle the tool is of benefit when working with forks with external springs (finally figured that out) The Cerianis don't need it. You need to remove the clamping bolts from your triple-trees and spread them as much as possible w/o damage. (large screwdrivers from the bottom). the tubes should then slide in with little effort unless something is bent (very common on old flat track stuff)
If they don't slide fairly easily, it is best to find out why and make it so (say, by honing the clamps) because you will want to make adjustments at the track (sliding the tubes up or down to adjust trail, and straightening after a crash.
Stop the insanity.
Re: Fork Tube Puller a la Gunk#54056 05/04/077:53 pm05/04/077:53 pm
Right on, I may have to give it a try... I had to make two other tools just to do the seals, LOL! A flat tip screwdriver bent at 45 degress about 2" from the tip, then ground down a "step" on the tip, like a seal puller has. Then spent 3 hours and a gallon of sweat to pry the seals out. To put the new ones back in I used some thick walled aluminum conduit and a piece of pvc and my dead blow hammer to tap the new seals in...
SBoyd, You are right about the old flattrack tubes. Small marks and waviness in spots, mainly up around the clamps. The fork travel area is pretty good still so I'll try to use them. There is a rough spot right up under the bottom clamp when it binds, but the other fork tube will slide up fairly easily. Maybe this tool will work for getting the other leg up where I want it, about 1/2" above the top clamp puts the geometry about right for 1/4 miles. I should sell them and buy some wide billet triples and have a set of xs650 forks gone over by Davey Durelle.
I finally got the motor figured out (bad porting job) and once I started riding it up and down the street the left fork leaked expensive 7W Bel-Ray all over my leg and beyond! Sucked to take the front end off for a few days worth of fork work... but it rained every day anywho... LOL!
Sounds like time for new tubes Kyle, a mate of mine up North makes them out of A106 seamless linepipe, top quality steel and the various schedules [wall thicknesses vs OD] makes the product very versatile. No need to struggle with corroded seals ever again if you use these. http://www.motohaus.com/html/seals/leakproof%20intro.htm Gunk's tube puller is the product of a fertile mind, c'mon Gunk time to shuffle feet whilst staring down at same and muttering "Aw shucks, t'wern't nuthin"