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Old 03-22-15 | 08:07 AM
  #21  
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rpenmanparker
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Joined: Dec 2009
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From: Houston, TX

Bikes: 1990 Romic Reynolds 531 custom build, Merlin Works CR Ti custom build, super light Workswell 066 custom build

Originally Posted by coachboyd
Good questions and comments. I'll try to address them here. A lot of info can be found on our website as well Eternity



It's hard to show superiority on one hub vs. another. . .and of course I can't just say "I can tell a difference when I am riding on them and trust me you should be riding on them too!" ha ha.
The main thing is we looked at all aspects of where we wanted to make improvements over other hub designs. Flange spacing, bearing spacing, degree of engagement, bearing drag, and the Ti freehub body. We can't really say it's *** better than *** hubs, but we are thrilled with the fact that we were able to incorporate all the design goals we had in this design.


Correct, and that speedy dissasembly at the end of the video was actually something that we hadn't planned on. When we made the hub based on the design and we found out just how easy it was to take apart, service, and then put back together, it was something that shocked us. It wasn't planned, but because there are three bearings in the freehub body, and the freehub body and axle all slide out together, this was an added benefit. The fact that there are no washers or spacers in either hub was done by design.


Yes, aluminum freehub bodies are cheaper and it's easy to replace them. But in a higher end hub model we don't want people to have to do that. We want them to last for the customer.



Pawl engagement on ours is 5.6 degrees. Other hubs vary by quite a bit. When you see a lot of hubs that have 24 engagement teeth and pawls that engage at the same time that gives 15 degrees engagement. Our current stock Taiwan hubs have 11.25 degree engagement.
Front hub weighs 100 grams, rear weighs 224 grams


For flange spacing we are at
front center to flange - 40.0mm
rear center to drive side - 18.1mm
rear center to non drive side - 38.0mm

This is the widest I have ever seen for a front. Seen some at 39mm and slightly above, but never 40mm. I doubt you could tell the difference between 39mm and 40mm, but combine that with the one piece end to end axle, and you can tell the difference in stiffness.

For the rear, we are at 49% tension balance between drive and non drive. So if the drive is at 120KgF, the non drive will be at 58.8KgF. This is more than enough to keep nipples in place and keep the wheel in true.



Thanks, we have actually done hundreds of hours of on the road testing under lots of riders, and thousands of miles of testing. It's one of the benefots of having these produced in the US. We can modify something after testing and then very quickly have a part made to test. We went through almost a dozen different revisions that were produced, ridden, and tested before finally coming up with the final concept.

Thanks again
Coach, make no mistake, I applaud the effort you put into this development and the developments you realized. My purpose was only to put the introduction into perspective and folks' minds to rest about the need to rush out and rebuild all their wheels with the new hubs. The value of your innovations will be established over time. Without a doubt it is nice to have some thought going into this area which seems to have been rather stagnant for quite a while. Kudos!
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