On one inbred with an alfine crank and 3 speed rear wheel

[Gattopardo]

Finally collected the inbred, and looking through my parts bin I have a bb30 alfine crank that I was thinking of fitting to the inbred and an src3 hub.

Would the chain line be right?  Or would I have to use a dished rear cog
What size chain ring would be useable  upfront?

Edit wrong hub 3 speed

[Brucey]

IIRC alfine chainset uses ~43mm chainline and this can't be adjusted (unless you space the chainring differently on the spider).

S3X has a  different chainline than this but it can be adjusted by dished sprockets and/or respacing/redishing the wheel.

IIRC S3X has 3rd gear direct drive, so you should set that to be 'normal' if you want the hub to be a 'fixed with lower gears for hills'.

http://www.sturmey-archer.com/files/catalog/files/305/SPECIFICATIONS%20-%20IGH%20S3X.pdf

cheers

[Jurek]

I've used an Alfine chainset on my 2 speed Brompton (pictured elsewhere)
I had to move the chainring to the outside of the spider in order to keep the chainline reasonable.
Not sure how relevant this info is to an inbred frame.

[rogerzilla]

Chainline is quite widely adjustable on a SA hub.

[Chris N]

Steel inbred is not bb30. But that's ok, because I don't think the Alfine crank is either.

[Gattopardo]

HollowtechII isn't BB30, I thought it was.

Everyday I learn my mistakes.

[Brucey]

not that you need to worry about it in this case but there are gazillions of weird BB types now. Some are listed here;

https://problemsolversbike.com/files/tech/Bottom_Bracket_Standards_Reference.pdf

and this article describes many of them too;

https://www.bikeradar.com/gear/article/complete-guide-to-bottom-brackets-36660/

most of them offer no real advantage to anyone, and/or actually cause a lot of trouble. It isn't a bad idea to remain ignorant of these and just stick to BB shells that are BSC threaded.

cheers

[rogerzilla]

44.6mm is max chainline according to SA but you may be able to grab extra in the long axle version.  I think I was running 46mm.  HT2 (not Hollowtech; that's the problematic 1st gen spline) is 50mm IIRC so you nay have trouble.  The middle/inner ring position should work but not the outer.

[Gattopardo]

not that you need to worry about it in this case but there are gazillions of weird BB types now. Some are listed here;

https://problemsolversbike.com/files/tech/Bottom_Bracket_Standards_Reference.pdf

and this article describes many of them too;

https://www.bikeradar.com/gear/article/complete-guide-to-bottom-brackets-36660/

most of them offer no real advantage to anyone, and/or actually cause a lot of trouble. It isn't a bad idea to remain ignorant of these and just stick to BB shells that are BSC threaded.

cheers

Thank you for more confusion....everything I have is square taper as my bikes are old....  The crank is sc-s500 alfine single speed, and has some form of hollowtech bottom bracket.  Thought I'd use the crank as it is there unused.

44.6mm is max chainline according to SA but you may be able to grab extra in the long axle version.  I think I was running 46mm.  HT2 (not Hollowtech; that's the problematic 1st gen spline) is 50mm IIRC so you nay have trouble.  The middle/inner ring position should work but not the outer.

Noticed in searches that you had an inbred and did something similar.

[rogerzilla]

Yes, XD2 crank and 107mm BB.

[Brucey]

Thank you for more confusion....everything I have is square taper as my bikes are old....  The crank is sc-s500 alfine single speed, and has some form of hollowtech bottom bracket.  Thought I'd use the crank as it is there unused.

Not  bad idea to stick with ST where possible.  IIRC the alfine chainset with BB comes set up for a 68mm bottom bracket shell and a chainline that is ~43mm, so ought to work in your build OK.   

Q. what OLN is the frame?

cheers

[Gattopardo]

Hello,

The frame oln is 135, but a quick email to on one say that the crank won't work.

[Torslanda]

Did they say why? OnOne used to make and market the Inbred with Aldine hub.

I haven't tried it but I'm willing to bet a 40 tooth on the outside of the Alfine HII crank would clear the frame and give you a reasonable chainline.

[rogerzilla]

I ran a 41T with a 46mm chainline.  Fagpaper clearance but never touched.  40T with 43mm chainline...might be a little too close.

[Gattopardo]

No idea why, it is what on-one said.

I'm going with 'zilla advice.  Have purchased a 39? tooth cog to fit.

[The Family Cyclist]

I did see an on one bike. Can't remember exactly which one but had an eccentric BB so had single speed or hub gear with IIRC vertical drop outs