Mystery Frame...870s? 90s? Any good?

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schroeds
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Mystery Frame...870s? 90s? Any good?

Postby schroeds » Sun Sep 08, 2013 7:01 pm

Hi all, I rescued this from from street trash. The lovely ITM headstem attracted me initially, then I noticed the DuraAce headset and BB7400. Closer inspection intrigued: nice welds, tubes that change shape along their length, rather elegant rear stays, braze on FD and a weird combination of downtube shifters (I think) and an internal rear brake cable routing. 3TTT bars don't hurt either.

The paint's a little scratched here and there and the brand is stickered. I can't find anything much from this era about Genesis bikes....there's a highish end Ti/Steel builder in the UK http://www.genesisbikes.co.uk but I doubt this is from them?

Pics below....would love to have any thoughts/assessment - worth the effort? Oh and what sort of crankset would I need for this? (Never built an old bike up). Thanks guys.

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Last edited by schroeds on Sun Sep 08, 2013 7:47 pm, edited 1 time in total.
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munga
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Re: Mystery Frame...870s? 90s? Any good?

Postby munga » Sun Sep 08, 2013 7:08 pm

Genesis Alloy Frames

3 / 84 Bundall St Bundall Qld 4217 Ph 07 5531 5579
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Re: Mystery Frame...870s? 90s? Any good?

Postby munga » Sun Sep 08, 2013 7:09 pm

i've seen a few around brisbane.
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schroeds
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Re: Mystery Frame...870s? 90s? Any good?

Postby schroeds » Tue Sep 10, 2013 9:43 am

Thanks Munga....looks like a little alloy shop (hasn't even got a website) so hand built I guess and perhaps that explains its quirks. Might call them to see what they say.

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schroeds
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Re: Mystery Frame...870s? 90s? Any good?

Postby schroeds » Thu Sep 19, 2013 4:22 pm

Can anybody tell me what sort of crank I'll need for BB7400? Preferably something that's widely available second hand and cheap.

Want to make it a single speed. ...would this work as a starter?
http://www.ebay.com.au/itm/Vintage-Shim ... 2eca5830a3

Or better still could I go this and simply take off the inner chainring?
http://www.ebay.com.au/itm/300962699466 ... 1423.l2649

Or Is there some magic about taper length or some such I should know about?

Apologies for nood questions...I'm a bottom bracket virgin :shock:

Thanks!
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Re: Mystery Frame...870s? 90s? Any good?

Postby munga » Thu Sep 19, 2013 6:04 pm

if the bottom bracket is in very good condition, sell it and buy another crank and an new bottom bracket. they do tend to fetch good money.
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Re: Mystery Frame...870s? 90s? Any good?

Postby schroeds » Thu Sep 19, 2013 6:25 pm

Oh OK hadn't seen that coming ... the wiley ways of the bike restorer 8)

Great suggestion thanks.

If I go that track can you tell me what size replacement BB I'd be looking for?

Also whilst I have your brain, is a single speed crankset the same as a standard crankset but with one chainring removed (wincing, I have a nasty feeling tat question might be a bit ridiculous)
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Re: Mystery Frame...870s? 90s? Any good?

Postby munga » Thu Sep 19, 2013 9:39 pm

ugh.

you need to work out what type of bb you have. my guess is english threading.
then measure the length of the spindle.
you can use a road crankset with one ring removed, but you will need bmx (or fixie) chainring bolts. they're a tiny bit shorter. you could also use some washers. depends on your level of acceptability.
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