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Echo Splined Cranks And Freewheel (and webpage!)

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This is not really user friendly.

This is Echo...

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They have made some nice stuff in the past, like integrated tensionners, when almost no one was doing it.

But it would be nicer if they use some standards.

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Got to agree with the interface - using an HG spline would give people more reasons to buy the cranks or the freewheel.

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And thus they could have sell freewheels for crewkerz's user, maybe New GT bike to come users and maybe others in the future.

So i really don't understand this "move". In general i really don't understand/like proprietary things.

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was me, they stopped replying after i asked for some sort of picture. chances are they are not making them.

Has been out there for quite a while. There seems to be at least a single wall rear rim in 24''.

echo-24-trials-complete-bike.jpg

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Has been out there for quite a while. There seems to be at least a single wall rear rim in 24''.

echo-24-trials-complete-bike.jpg

ha. they look shit to me, glad i got trial techs now :)

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ha. they look shit to me, glad i got trial techs now :)

Yeah. Pretty much like the single wall front rim just wider. I wonder why they don't sell them solo.

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I ordered a splined freewheel by mistake and instead of returning it I thought I'd go deeper down the rabbit hole and also order a pair of splined TR cranks to go with it and give it ago.

The cranks arrived today  but the retailer forgot to include the spacers, so now I have an excuse to return them If I don't think they are good enough.

I put them on the kitchen scales and they weigh the same as the old threaded TR cranks:

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The crank itself, before CNCing, is the exact same as the old crank. After CNCing, the new cranks has a new cross section. To use I-beam terminology, the new cranks have thinner flanges and a thicker web (the bit in the middle). In the following diagram which shows the crank cross-section, (2) would be the old design, and (3) the new one. As you can see, (2) has a deeper grove but thicker flanges, while (3) has a shallower groove and thinner flanges. I'm not sure this was a good design decision; maybe someone from a mechanical design background can comment.

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Somehow the old design looks stiffer and beefier:

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Should I keep 'em or just go for threaded ones?

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Keep 'em! If anything it should be stronger system :) 

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