Kirk Precision Spares

[danson67]

Yup, the MTB version:

The hanger:

It's held on with a nasty expanding plug and a self-tapping screw. Probably best to replace this with a chainring bolt. As you can see, my hanger's already split.
The front mech hanger:

The rear hanger is 28mm centre to centre. The front mech is 18mm centres.

They're both Kirk specific parts, so I'll do some files for you...is STEP/IGES OK?

All the best,

 

[Maxcalibur]

That's perfect. The extra pictures are really helpful. I'll definitely get it machined from Al and use something like a chainring bolt on the rear.

STEP/IGES would be perfect. Thanks so much. Hopefully it'll be a useful resource for other folk too. I might come up with something inventive for the cable guides.

The MTB frame does seem to be the same as the road Precision, but just with U brake mounts instead of the caliper bridge.

 

[stringfellow1946]

viewtopic.php?t=235543
The one danson67 has in the photo is a very early version of the mountain bike one, it very quickly changed to the Revolution which has totally different Frame & front gear hanger & uses a one off expanding band type Shimano front gear.
I've just checked the rear gear hangers on the Road Precision & the Mountain bike Revolution ones that I have & they both look the same BUT i cant' be 100% sure with out dismantling both..
Hope this helps
chris

 

[Maxcalibur]

Thanks Chris.

I noticed the crazy front gear from the pictures j.c. sent me.

Obviously I can't tell the exact dimensions, but from danson67's pictures, they certainly look like they'd fit. It's just a question of whether everything will be hanging the right distance from the frame. I guess the main thing is the length on the rear one, and the distance out from the frame to the derailleur on the front.

 

[danson67]

Chris

The one danson67 has in the photo is a very early version of the mountain bike one, it very quickly changed to the Revolution which has totally different Frame

Certainly is...I particularly like the optimistic badging:

Not like there was ever an unlimited 2nd edition

Thankfully the front mech on the Precision is just a braze on triple, mine's got a Suntour, despite the Shimano DX everywhere else.

I might come up with something inventive for the cable guides

Is it just the two plastic rear brake cable guides, or some of the stops elsewhere?

All the best,

 

[Maxcalibur]

Hahah. Oh well. We probably wouldn't be talking about them here if they'd been a success!

Yes, I just mean the rear cable guides on the top tube.

 

[Maxcalibur]

Does anyone know an engineer/company in London that would make something like this up?

 

[danson67]

CAD Models now done: IGES, STEP, SDPRT, DXF etc available




Any takers on machining a few? or maybe 3D-printing a couple of trial pieces?

All the best,

 

[Casper75]

Re: Kirk cad

Hi Danson67,

Do you still have the CAD files for the rear hanger, I want to 3d print a few. Thanks a lot in advance

Casper

 

[danson67]

Re:

Hi Casper,

What format do you need?
I drew up the model in SolidWords, so have .SLDPRT, IGS or STEP:


All the best,