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

[schroeds]

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" onclick="window.open(this.href);return false; 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.

[munga]

Genesis Alloy Frames

3 / 84 Bundall St Bundall Qld 4217 Ph 07 5531 5579

[munga]

i've seen a few around brisbane.

[schroeds]

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.

Sent from my HTC Desire S using Tapatalk 2

[schroeds]

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" onclick="window.open(this.href);return false;

Or better still could I go this and simply take off the inner chainring?
http://www.ebay.com.au/itm/300962699466 ... 1423.l2649" onclick="window.open(this.href);return false;

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

Thanks!

[munga]

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.

[schroeds]

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

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)

[munga]

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.