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Mike Poyzer @ Onza

New Tensile Freewheel Project

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Just thought I'd show you this new project we are working on for a new trials freewheel. 108 clicks with a splined interface and lockring. New custom made Tensile cranks to follow shortly. No more stripped threads on your cranks and no more freewheels wedged on so tightly that you cant get them off. Coupled with a fully servicable design with all parts available, there will be no excuse for not maintaining them. Availability probably mid summer.

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This looks interesting. Kinda like the middleburn bashring design?

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Cool stuff. I've thought about this for years, but it does have the potential to bring up a few issues as well as solving another.

Have you had to sacrifice any bearing/ratchet sizes to allow it to clear the (presumably larger) interface at all?

Edit; That was terribly worded, but yeah.

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Looks promising, I know my old Tensile FFW I had on my Python despite having at least 2 mangled springs I bent back into shape never skipped on me once so I have every faith in this!

Edited by isitafox

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Does the lockring have opposite threads so that it won't loosen when riding?

Also, is it possible to make a better lock ring removal tool than that small four pin design? I am pretty sure of people not being able to remove the freewheel because they have damaged the pin holes!

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I like it, got to agree with Ben on an alternative lock ring tool. BUt then it's choosing a tool type that is widely used in bike shops and people have in their tool box.

Next a fixed rear hub, with wide flange spacing designed to take a HG splined sprocket? :D

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Regarding the lockring tool, would it possible to use a BB spline? I'd have thought that would be a better bet than the pin tools.

May I also suggest a bit of a restyle for the tensile cranks? Existing ones have never exactly been aesthetically pleasing!

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The Frewheel is 108. Lockring removal is under review. With threadlock there should be no problem. Don't forget that with the splined interface, the lockring is not under any torsional load.

The Tensile Cranks will be a brand new design to go with this freewheel. There may be more than one new Tensile crank, several designs have been under test and review.

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For the lockring tool/interface what about a cassett tool?

removing-cassette.jpg

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For the lockring tool/interface what about a cassett tool?

Would most likely be too small (diameter comparable to the axle diameter of an ISIS BB).

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If an already existing tool couldn't be utilised to fit, even making a custom tool (like the Hope borecap tools, or old Echo external BB tool) would be fine, buy the bb and get the little tool in with it. But I agree the pins are a bad design.

Overall though props for trying to make it work out (Y)

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Utilising the same sort of bashring system as the previous Tensile cranks?

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Does the lockring have opposite threads so that it won't loosen when riding?

Also, is it possible to make a better lock ring removal tool than that small four pin design? I am pretty sure of people not being able to remove the freewheel because they have damaged the pin holes!

All of this, especially the bit about the lockring, I had a tensile 96 that was fine till a sidehop preload with a unintentionally (sp) loose (self lossened) and subsequently stripped lockring made it sh1t it's guts all the the floor

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I think the lockring people are refering to isn't the lockring that holds the freewheel itself together. The freewheel itself looks like it's pretty similar to the Try-All 108.9/RockMan 108 freewheel and just has the usual 'back of the freewheel' lockring kinda setup on the go, rather than the 'front of the freewheel' style on the older Tensile models.

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Well it's an advancement which is good to see in the sport, nice one (Y)

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How loud will it be? In comparison to other freewheels where does it come in?

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Does It fit middle burns?

Has the strength of the outershell ben redesigned? Just asking because I had 2 tensile fw break after 2 weeks each

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How loud will it be? In comparison to other freewheels where does it come in?

Fag.

I want to know if it's a totally new spline or if it's been used somewhere else. It does look awfully like a middleburn spline.

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Fag.

I want to know if it's a totally new spline or if it's been used somewhere else. It does look awfully like a middleburn spline.

Haha I was just interested.

Its obviously something most riders take into consideration hense the DB meter levels on Tartybikes Freewheel section.

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It had better be reliable.

Or people will have bought new cranks for nothing. Which will then be rendered useless.

Love the idea though. If it has the reliability of the SL I'd definately look into buying the crank/freewwheel/bash setup.

Will the cranks be available in different lengths?

160mm, 165mm, 170mm ect...

Cater for everyones needs/ preferances.

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thanks for clearing that up mark, I'll fess that i mis-read the photo's.

In that case hows about a circlip or similar device to stop the centre lockring coming loose?

And the option of a HD bashring?

EDIT: oo and a spline to screw on adapter similar to a zoot crank set up?

EDIT 2: Lots of ofset can't be a bad thing either...

Edited by CC12345678910

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The lockring's on the back of the freewheel so it shouldn't really be able to come loose. The main freewheel itself looks similar to most 108.9s, and it's never really been a problem with them.

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