Shimano Biopace

[rickangus]

Hi,

I'm looking for a Biopace HP 38t chainring, ideally good condition or NOS.

Thanks

 

[Minifreak]

I think I have an outer and middle spare, both in good nick but would want to sell them together.

 

[rickangus]

Thanks. Are they HP rings and how many teeth?

How much are you looking for?

 

[Minifreak]

Just checked, they are 48 and 38 but afraid they are SG. Pics just incase :

 

[rickangus]

Thanks. May be it's the camera angle or the light - but the teeth in the botom right quadrant look like they're past their best - or even non existent??

 

[Minifreak]

Thanks. May be it's the camera angle or the light - but the teeth in the botom right quadrant look like they're past their best - or even non existent??

Camera angle and lighting. I can get more in the light in the morning if you like?

 

[Minifreak]

Both rings have a couple of shorter teeth in corresponding places, this is the design, it aids shifting. Let me know via PM if you'd like them and I can post tomorrow

 

[rickangus]

Ok, apologies if this message is repeated - I lost my i/n connection during an earlier attempt to make this post.

Firstly thanks to all who responded, publically and privately, making the effort to post pics.

This is where I'm at. I'd bought an old bike, a Raleigh Royal, which was bit of a 'barn find', a 1989 model but clearly hardly used. I stripped it down and was surprised that the middle chainring appeared quite worn. I now realise it probably isn't worn at all - it's just the way the teeth are cut as per minifreak's post above. In fact the chainring I have is actually in an even better condition than the one one above.

So, I'm sorry (or should that be happy?) to say that I don't actually need another ring.

Apologies to all but thanks for your responses.

 

[Minifreak]

Just glad yours is in good nick buddy, get some pics up of the bike as you restore her

 

[rickangus]

Yep, will do - and I'm having fun doing it!