Thorn Cycles Forum

Technical => Transmission => Topic started by: arielos on May 14, 2017, 02:41:06 PM

Title: replacing my Thorn triple solo alloy crankset length 170mm
Post by: arielos on May 14, 2017, 02:41:06 PM

Hello,
I recently devastated my right crank pedal while trying to screw the left pedal inside. I have tries to screw the right pedal after but it only screws in an angle.
So i probably need new right crank.
I bought my thorns 7 years ago (Thorn 110/74 PCD Triple Solo Alloy Crankset - Silver) and the length of the crank is 170mm.
Can you please tell me what replacement crank i need please? I see in your site you only have 140mm and 14mm
Regards

(http://)

Title: Re: replacing my Thorn triple solo alloy crankset length 170mm
Post by: AndyE on May 14, 2017, 05:04:30 PM

nil desperandum, take it to a cycle shop and see if rethreading will work first or have them bush out the thread. Have a look at the video

https://www.youtube.com/watch?v=WKkou_WTkZg&t=379s

Andy
 

Title: Re: replacing my Thorn triple solo alloy crankset length 170mm
Post by: arielos on May 14, 2017, 05:28:22 PM

I went to the shop and they said I need to replace the right crank.
Can you link me to the crank I need at sjscycles?
Thanks

Title: Re: replacing my Thorn triple solo alloy crankset length 170mm
Post by: Danneaux on May 14, 2017, 05:36:27 PM

Oh, dear...Things Happen. The same result can occur if the steel pedal spindle threads gall to the aluminum crankarm.

You're correct -- currently, SJS Cycles only lists right-hand crankarms in the smaller sizes. It would be worth contacting them to see if they expect replacements in 170mm soon.

Short of that, SJS Cycles currently stock complete replacement chainsets (both crankarms, hardware, and a set of mounted chainrings) in 170mm and *black* color at a current price of £119.99 Inc VAT here:
https://www.sjscycles.co.uk/chainsets/thorn-triple-chainset-black-443222t-170mm/?geoc=US

Very best of luck and all condolences. Please let us know how you come out.

Welcome to the Thorn Cycling Forum, Arielos.

Best,

Dan.

Title: Re: replacing my Thorn triple solo alloy crankset length 170mm
Post by: arielos on May 14, 2017, 06:31:48 PM

Thanks for the answer.
I have a roll off so the triple chainset isn't an option..
Is there anowhere else to purchase such a crank?

Title: Re: replacing my Thorn triple solo alloy crankset length 170mm
Post by: Dave Whittle Thorn Workshop on May 15, 2017, 11:15:40 AM

Hi, we can't order any more silver ones as the factory is unable to produce them any longer. We now sell these https://www.sjscycles.co.uk/cranks/150-thorn-10464-pcd-triple-crankset-mk2-black/  (https://www.sjscycles.co.uk/cranks/150-thorn-10464-pcd-triple-crankset-mk2-black/) i'm more than happy to sell you these, a ring, bolts and bottom bracket with a slight discount if required to replace your arm.  Alternatively if you send the right hand crank to me I can repair the thread with a Heli-coil and return for £15.

Dave 01278 441542

Title: Re: replacing my Thorn triple solo alloy crankset length 170mm
Post by: Danneaux on June 09, 2017, 05:26:11 PM

Great and generous offer from Dave. Did you take him up on it, Arielos?

All the best,

Dan. (...who is waiting for "the rest of the story")

Title: Re: replacing my Thorn triple solo alloy crankset length 170mm
Post by: sjacka on June 15, 2017, 03:47:59 PM

I just installed these on my thorn audax. Cheap and beautifull

https://www.xxcycle.com/road-crankset-and-stronglight,en.php