Dec 17
When I built my first Spaceframe in 2003 I used 4130 cromo.
2003 Jones 4130 single speed frame
I’ve been asked many times about the possibility of a steel Truss fork and Spaceframe and I’ve been wanting to build a set for a while.
The fork went together well.
It’s heavier than the titanium Truss but it’s lighter than the more normal steel Fat fork.
Just before the first test ride.
The front to back stiffness is very good like the Ti Truss. It feels very similar.
I’m enjoying working with the metal. It reminds me of my days back at the GT factory. 4130 was used for most of the BMX frames, forks and bars there. Good stuff and not too expensive.
4 Responses to “4130 cromo steel Truss fork”
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December 20th, 2009 at 11:42 am
Jeff - it looks like the truss distance is shorter front-to-rear between this fork and the Ti version - rake and all the “important” geometries the same…? Glad to see the Blog getting some more posts! Merry Xmas.
December 24th, 2009 at 3:04 am
That steel truss fork would look great chromed! I can imagine that with a matt black steel frame
Jeff - I’m wondering if 15/20 bolt though front hub would be an idea, what do you think? Or is the truss fork sufficiently stiff as it is?
December 28th, 2009 at 10:49 am
The fork length and offset are the same. I used smaller diameter tubing and brought the front legs back a little.
December 28th, 2009 at 11:08 am
The Truss fork is more than stiff enough. With the Wide front hub and dish less front wheel, the front end is even more precise. A Shimano QR, made properly tight, will clamp the axle between the dropouts rigidly.