Silver 3 cranks heel clearance?

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Nick Payne

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Dec 31, 2024, 4:52:21 AM12/31/24
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One thing I couldn't see on the Riv website regarding these cranks is how much heel clearance they provide. I ride quite markedly toes out heels in, and with normal length pedal spindles, I need a crank where the pedal end of the crank is about 8mm further from the centreline of the bike than the BB spindle end, or the inside of my heels brushes the crank on each pedal revolution.

Does anyone have this measurement, or an uninstalled drive side crank that they can sit on a flat surface and make the measurement?

Nick Payne

iamkeith

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Dec 31, 2024, 2:07:18 PM12/31/24
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I don't know the answer but, if you aren't already familiar, you might look into these pedal extenders.  They're intended to improve (widen) the Q factor, but would seem to be an ideal solution for your issue:

Nick Payne

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Dec 31, 2024, 8:25:13 PM12/31/24
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I looked at those years ago, but they widen things about three times as much as I need. I think they add 20mm each side.

Nick

Bill Lindsay

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Dec 31, 2024, 9:48:38 PM12/31/24
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Nick

I saw your request and in principle I'm willing to pull my cranks and measure, but unfortunately I got called away for an imminent death in the family.  On my way out the door I took two photos of the Silver 3 cranks for you:


Qualitatively, I would call that "plenty of splay".  Whether it's 8mm or 10mm or 7mm remains to be measured.  But this should give you plenty to estimate.  The arms are 173mm if you want to play scaling-games with pixels on Adobe or PowerPoint.  

Bill Lindsay
El Cerrito, CA

Nick Payne

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Dec 31, 2024, 10:53:42 PM12/31/24
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Bill

Thanks. Just eyeballing your photos, it looks like there's sufficient clearance for my needs. Now I need to wait for Rivendell to get the short length back in stock...

Nick

Ray Varella

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Jan 2, 2025, 12:28:49 AM1/2/25
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IMG_2551.jpegHey Nick,
By holding a tri square inline with the pedal spindle and the crank arm at 90 degrees I get a 10mm gap at the bottom bracket spindle. 
I would need a third hand to get a really good set of pictures but I’ve carefully measured it several times. 

Hope this helps 
Ray

Nick Payne

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Jan 3, 2025, 1:39:22 AM1/3/25
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Thanks - very useful.

Nick
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