919 fork tubes - bent or otherwise. - Wrist Twisters
 
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post #1 of 12 Old 03-20-2009, 03:56 PM Thread Starter
 
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919 fork tubes - bent or otherwise.

Does anyone have a bent fork tube or two? Why would anyone want a bent fork tube? Ah, well, um, er... I bought some new aftermarket tubes to repair a wreck but they have arrived without the insert in the very bottom of the tubes. The inserts, similar in appearance to a large flat washer, are retained by the rolled over edge of the bottom end of the tube. I disposed of the old tubes (prematurely) so can't measure the piece to machine replacements. If anyone has, would be happy to pay to either extract or measure for me.

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post #2 of 12 Old 03-20-2009, 04:00 PM
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DAMN, you are about two weeks too late.

I just threw away two bent tubes!

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post #3 of 12 Old 03-20-2009, 04:46 PM
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Does it show in this linked diagram?

http://fiche.ronayers.com/Index.cfm/.../FRONT_FORK_04

If so, which part is it?

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post #4 of 12 Old 03-20-2009, 04:59 PM
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I have random F4i fork parts laying around. If you can get a pic of what you need I may be able to give you what need instead of messing with shipping entire forks.

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post #5 of 12 Old 03-20-2009, 05:10 PM Thread Starter
 
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Quote:
Originally Posted by Tom View Post
Does it show in this linked diagram?

http://fiche.ronayers.com/Index.cfm/.../FRONT_FORK_04

If so, which part is it?
Sadly, not shown as a separate part, thats the problem. The inserts are inserted at the (Showa) factory then the tube end is rolled in a lathe or more likely crimped over in a press. See the attached pic.
Attached Images
File Type: jpg tube_ends.jpg (135.6 KB, 25 views)

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post #6 of 12 Old 03-20-2009, 05:26 PM Thread Starter
 
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Quote:
Originally Posted by touring919 View Post
I have random F4i fork parts laying around. If you can get a pic of what you need I may be able to give you what need instead of messing with shipping entire forks.
That would be brilliant! Pic attached to previous post. Type is Showa 43C but I'm guessing all that that means is that the diameter is 43mm and the "C" means cartridge. I dont know what type F4i used.

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post #7 of 12 Old 03-20-2009, 05:42 PM
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If touring919's solution does not work out, let me know. I have one bottom end (lower 12 inches) of the tube with the part you want in the tube end.

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post #8 of 12 Old 03-20-2009, 07:43 PM Thread Starter
 
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Quote:
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If touring919's solution does not work out, let me know. I have one bottom end (lower 12 inches) of the tube with the part you want in the tube end.
Thanks Tom - an excellent Plan B. A possible beneficial side effect is that when I have this problem solved, I may be in a position to help other members source aftermarket tubes. I say "may be" because although they are less expensive at source than genuine Honda, the shipping costs to the US might change this - not sure yet.

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post #9 of 12 Old 03-21-2009, 06:15 PM
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I think the F4i parts will work for you. They have the same spacer crimped into place. Not sure if the lengths of that spacer are the same though. I can send them too you but holy cow. I'm guessing shipping to New Z. is going to be crazy expensive. PM me an address to ship too and I'll get a quote on monday.

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post #10 of 12 Old 03-21-2009, 07:03 PM Thread Starter
 
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Quote:
Originally Posted by touring919 View Post
I think the F4i parts will work for you. They have the same spacer crimped into place. Not sure if the lengths of that spacer are the same though. I can send them too you but holy cow. I'm guessing shipping to New Z. is going to be crazy expensive. PM me an address to ship too and I'll get a quote on monday.
Thank you touring919 & Tom - PM under construction

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post #11 of 12 Old 03-22-2009, 03:03 PM
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...for visualization purposes on this subject...

This is what the bottom of the fork tube looks like: a dark ring captured by the crimped end of the tube, a lighter washer or ring with four raised lands on it (this washer or ring can freely rotate), and a fixed band behind the ring/washer that extends about 1.25"-1.5" behind it and displays four inward bent tabs (only one visible in the photo).


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post #12 of 12 Old 03-22-2009, 09:47 PM Thread Starter
 
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Thanks Tom, great shot of the subject matter. Yeah, as you say in your PM, I think the 'washer' is the seat for the topping spring on the damper tube and its location would dictate the maximum distance the slider could travel down the tube when the front wheel leaves the ground - as they do occasionally !

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