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 Post subject: Project Sow's ear.
PostPosted: Tue Apr 14, 2009 8:32 pm 
aka Leo Swayer
aka Leo Swayer
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Joined: Wed Jun 18, 2008 7:15 pm
Posts: 6365
Location: Wales.UK
I've long pondered the purchase of a modern hardtail cross country bike. I've never made the jump mainly because I can't really justify it and down to the cost. So I decided to make one :D . I've had this old specialized rockhopper aluminium frame kicking around for ages, but i've never used it because the paint is a bit crap and the bottom bracket threads were a bit dodgy.
A mate of mine offered to sort the threads for me, as long as I did something with it afterwards. So I am. I've decided to make a disc braked, single speed, front suspended XC bike. I've taken all the unnecessary guides and suchlike off to start with, I'll post more pics as it dribbles along. Next jobs, get busy with the Nitromores and weld on my rear disc mount.


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frame 007.JPG
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frame 008.JPG
frame 008.JPG [ 34.6 KiB | Viewed 1211 times ]
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 Post subject:
PostPosted: Tue Apr 14, 2009 8:35 pm 
Lincs AEC
Lincs AEC

Joined: Fri Sep 07, 2007 8:34 pm
Posts: 12314
Location: Branston, Lincoln
That should be a sturdy base frame.


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 Post subject:
PostPosted: Tue Apr 14, 2009 10:14 pm 
Retro Guru
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Joined: Sat Jan 19, 2008 4:35 am
Posts: 1974
Location: Wellington NZ
I wish I'd taken off all the extra cable guides from mine before i sprayed it.....

i left them on in case i didnt like singlespeed - but i do so cant imagine ever having gears on her again


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 Post subject:
PostPosted: Tue Apr 14, 2009 10:18 pm 
Retro Guru
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Joined: Wed Feb 14, 2007 12:49 am
Posts: 807
Location: hiding under the bed
weld?!?! assuming it is an a1 aluminium frame can i recommend 5356 filler rods, and that you use at least h30 for the mount. hope you are going to heat-treat it afterwards or it WILL break.


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 Post subject:
PostPosted: Tue Apr 14, 2009 10:27 pm 
Devout Dirtbag
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Joined: Tue Mar 17, 2009 5:08 pm
Posts: 109
Im doing the Exact same:

Image


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 Post subject:
PostPosted: Tue Apr 14, 2009 10:38 pm 
retrobike rider
retrobike rider
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Joined: Tue Nov 11, 2008 12:28 pm
Posts: 4179
Location: rutland
dont think much of your seat position :P


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 Post subject:
PostPosted: Tue Apr 14, 2009 10:39 pm 
Devout Dirtbag
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Joined: Tue Mar 17, 2009 5:08 pm
Posts: 109
Lol me niether very uncomfortable


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 Post subject:
PostPosted: Wed Apr 15, 2009 11:02 am 
Old School Grand Master

Joined: Tue Oct 09, 2007 1:55 pm
Posts: 8202
Location: New Forest, UK
I'm a bit worried about you lopping off the seatstay bridge too - it's a fairly important structural bit and you will be putting a lot of stress onto the welds around the seat cluster.


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 Post subject: .
PostPosted: Wed Apr 15, 2009 6:21 pm 
aka Leo Swayer
aka Leo Swayer
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Joined: Wed Jun 18, 2008 7:15 pm
Posts: 6365
Location: Wales.UK
Possibly, I think it will be ok. I wouldn't remove the one near the bottom bracket due to all the twisting forces, but the top one just seems to get put there as a brake mount that never gets used.


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 Post subject:
PostPosted: Wed Apr 15, 2009 6:57 pm 
retrobike rider
retrobike rider
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Joined: Tue Nov 11, 2008 12:28 pm
Posts: 4179
Location: rutland
ive seen many bmx frames cracked at the seatstay/seattube weld . its a highly stressed area , keep an eye on it


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