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Lefty Adapter... anything lighter?

1K views 9 replies 3 participants last post by  Mr.Magura 
#1 · (Edited)
I have a Project321 set of adapter clamps. Gawdang things are 504 grams!! :eek:

I have a Lefty Max 140 Aluminum, reduced travel 29er use. The original Cannondale clamps and 1.5" steerer tube are 344 grams.

Seems to me there has to be a way to use the original clamps with a lighter steerer tube.

I remember Terminaut's original lefty adapter from back in the day was just a custom milled steerer tube that was pressed into the original clamps, and secured with a threaded bolt.

Is there a lighter steerer tube I can use with the original clamps in the same manner, and have it be safe? I'm thinking I need to make it a tight fit, and can drill and tap a small allen bolt in there so it can't back out. Epoxy, maybe?

Most of the steerer tubes for bonded clamp forks rely on the lower pinch bolt to secure the steerer tube. Terminaut's was a press-in snug fit.
 
#7 ·
Heh....



There's always Paypal and Shipping! Just be sure to stamp 'Made in Denmark by real Democratic Socialists for a fair wage, not in China by forced labor at gunpoint for $0.02" on it. I would be proud to fly that flag. :thumbsup:

Then again, I can probably find somebody who can do that locally if I get them a drawing.

I think any Lefty adapter steerer tube would work. I just have to figure out a way to fix it in place safely, and so it doesn't creak. I can drill out the rivet and press out my Cannondale lower crown from the 1.5 steerer tube, and use that. The problem is mostly that the aftermarket steerer tube adapters aren't meant to be press in fit. They are relying on the lower pinch bolt that my fork clamps don't have.
 
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