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PostPosted: Thu Jul 04, 2013 2:09 pm 
retrobike rider
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Joined: Tue Jan 29, 2008 11:04 pm
Posts: 1801
Location: A wretched hive of scum and villainy...
Yup, the MTB version:
Image
The hanger:
Image
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:
Image
More pictures here.
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,


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PostPosted: Thu Jul 04, 2013 3:46 pm 
Dirt Disciple

Joined: Wed Jun 26, 2013 9:25 pm
Posts: 10
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.


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PostPosted: Thu Jul 04, 2013 7:25 pm 
Retro Guru

Joined: Mon Jan 02, 2012 8:59 pm
Posts: 1117
Location: Isle of Wight
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


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PostPosted: Thu Jul 04, 2013 7:55 pm 
Dirt Disciple

Joined: Wed Jun 26, 2013 9:25 pm
Posts: 10
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.


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PostPosted: Fri Jul 05, 2013 5:39 pm 
retrobike rider
retrobike rider
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Location: A wretched hive of scum and villainy...
Chris
Quote:
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:Image
Not like there was ever an unlimited 2nd edition :D

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

Maxcalibur wrote:
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,


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PostPosted: Fri Jul 05, 2013 7:24 pm 
Dirt Disciple

Joined: Wed Jun 26, 2013 9:25 pm
Posts: 10
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.


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PostPosted: Fri Jul 12, 2013 5:53 pm 
Dirt Disciple

Joined: Wed Jun 26, 2013 9:25 pm
Posts: 10
Does anyone know an engineer/company in London that would make something like this up?


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PostPosted: Thu Aug 08, 2013 6:53 pm 
retrobike rider
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Joined: Tue Jan 29, 2008 11:04 pm
Posts: 1801
Location: A wretched hive of scum and villainy...
CAD Models now done: IGES, STEP, SDPRT, DXF etc available

Attachment:
Screen Shot 2013-08-08 at 18.36.37.png
Screen Shot 2013-08-08 at 18.36.37.png [ 93.5 KiB | Viewed 466 times ]


Attachment:
Screen Shot 2013-08-08 at 18.22.51.png
Screen Shot 2013-08-08 at 18.22.51.png [ 85.75 KiB | Viewed 466 times ]

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

All the best,


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 Post subject: Re: Kirk cad
PostPosted: Wed Nov 26, 2014 10:59 am 
Newbie

Joined: Wed Nov 26, 2014 10:50 am
Posts: 4
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


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 Post subject: Re:
PostPosted: Wed Nov 26, 2014 12:42 pm 
retrobike rider
retrobike rider
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Joined: Tue Jan 29, 2008 11:04 pm
Posts: 1801
Location: A wretched hive of scum and villainy...
Hi Casper,

What format do you need?
I drew up the model in SolidWords, so have .SLDPRT, IGS or STEP:
Attachment:
Screen Shot 2014-11-26 at 11.38.53.png
Screen Shot 2014-11-26 at 11.38.53.png [ 37.45 KiB | Viewed 358 times ]


All the best,


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