RH cranks on a 650B Hillsen?

[ted]

In the comments section of his blog Jan wrote "... I’d love to try 45
mm tires or even 50 mm, but you cannot easily fit tires that wide
between cranks with narrow tread (Q factor)."
The 650B Hillsens will fit a 45mm tire. Since I expect the new RH
cranks were developed with a narrow tread, I am now curious if they
clear the chain stays of a 650b Hillsen without using a bb length that
gives a wider than spec chain line.

Has anyone here put those cranks on a 650b Hillsen, and if so how was
the clearance and the chain line?

[Marc Schwartz]

That sounds reasonable Ted, provided production costs are low enough, and perceived need high enough. Not sure if I would bother to make the change, but whudooino?

El Schwartzy
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Sent: Saturday, August 11, 2012 7:00 PM
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Subject: [RBW] RH cranks on a 650B Hillsen?

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[Michael_S]

Not everyone needs a narrow Q, but  the other  issue is that there are no good 45mm 650B tires. The Schwalbe Fatties that Riv sells are stout and heavy.  

It would be interesting to  build a road bike that could fit some of the fat 700C tires out there, like the 60mm Schwalbe Super moto, and test this hypothesis.

 

~mike 

Carlsbad Ca

[ted]

I didn't mean to start a thread on tires. I only posted Jan's comments
to explain why I was curious about how the RH crank fits on the
Hillsen which fits 45mm tires.