Fork tube diameter

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Mar 22, 2011 | 10:09 PM

Ta2edShady

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From: Sun Diego, CA

Fork tube diameter

I am thinking about getting some fork tube headlight brackets for the rectagular headlight.

So, I asked the wife to measure the fork tube diameter and she says its 45mm +-(hard to measure), or 140mm all the way around(easy to measure).

Does 45mm sound right? Is that even a standard size? I seem to always read about 39mm, 41mm tubes but never 45. I'm trying to just get most of the parts home and into the garage waiting for me when I get back from deployment.
Thanks for any help!

Mar 22, 2011 | 10:17 PM

Ta2edShady

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Guess I should have posted a pic of what I was talking about but here:
http://www.flyncycle.com/Streetfight...t_p/hlutsf.htm

and

http://www.flyncycle.com/Streetfight...p/hlbazf-p.htm

Mar 22, 2011 | 11:40 PM

chevy94ss

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From: Lebanon, MO

Most sportys ive seen have 39mm fork tubes

Mar 23, 2011 | 07:41 AM

XL50#674

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From: Streetsboro, Oh

Quote:

Originally Posted by chevy94ss

Most sportys ive seen have 39mm fork tubes

This is true. Both my bikes are 39mm

Mar 23, 2011 | 09:06 AM

Ta2edShady

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From: Sun Diego, CA

I have a wide glide front end on the bike, it's in my pics I believe. Would this possibly account for the difference in tube dia?

Mar 23, 2011 | 10:20 AM

HDCruzin

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That year Sporty should be 39mm. Depends where she was measuring. The measurements you stated were consistent, 140mm circumference is 44.6mm diameter.

Mar 23, 2011 | 10:55 AM

Ta2edShady

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From: Sun Diego, CA

I assumed, hopefully correctly, that she should measure the tube between the triple trees, or directly under the bottom triple tree.

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Mar 23, 2011 | 12:28 PM

HDCruzin

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From: Pittsburgh,PA

The wide glide front end changes everything. Would prob depend what year model WG was used.

Mar 23, 2011 | 12:39 PM

#10

Ta2edShady

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From: Sun Diego, CA

Crapaolla, bought the bike used and never thought to ask what year the front end came off of... Guess that will have to wait until I get home. Plus I think I might fab up two side brackets and use some T-Bolt clamps on the tubes to get the same-ish effect but made from my own two hands instead of purchased. Thanks for all the help.