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 Post subject: Swapping frame?
PostPosted: Fri Aug 02, 2013 8:54 am 
Dirt Disciple

Joined: Fri Aug 02, 2013 8:43 am
Posts: 47
Bought a mid 90's saracen bike on ebay but I'm thinking the frame will probably be a bit too big. The spec is good, pretty much all XT so I'm hoping to get another frame (hopefully a Gary Fisher) and swap the lot over.

Just wondering what to look for in a frame so as much as poss will fit? Should I get tools and try to do the BB and headset or just take it to a bike shop? I'm fairly handy with cars but haven't messed about with bikes for years!

Thanks


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 Post subject: Re: Swapping frame?
PostPosted: Fri Aug 02, 2013 9:29 am 
retrobike rider / Gold Trader
retrobike rider / Gold Trader
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Joined: Mon Jun 22, 2009 11:09 am
Posts: 9399
Location: Devon
You need a chain splitter, bottom bracket tool and crank pullers as specific tools. You might need headset spanners but depends on the bikes in question.

If bottom bracket is good swap it over providing shell is right size (measure with a ruler).

You should post pics or let us know who the models so we can see if the rest will swap.over like Seatposts etc.

And welcome to the site!


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 Post subject: Re: Swapping frame?
PostPosted: Fri Aug 02, 2013 10:56 am 
Dirt Disciple

Joined: Fri Aug 02, 2013 8:43 am
Posts: 47
Hi mate this is the beast! http://www.ebay.co.uk/itm/Saracen-Tufft ... true&rt=nc

19" should be the right size but I sat on some bikes while in Halfords the other day and the 18 with the seat higher felt so much more comfortable. Probably silly but it will just bug me!


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 Post subject: Re: Swapping frame?
PostPosted: Fri Aug 02, 2013 11:02 am 
retrobike rider / Gold Trader
retrobike rider / Gold Trader
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Joined: Mon Jun 22, 2009 11:09 am
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Location: Devon
Ah nice. What is the frame you are swapping onto?

I would point out that modern bikes are a lot different. Most have a longer top tube and short stem.

Anyway, imagine that the bottom bracket is 68mm shell, seatpost I have no idea but *think* its 26.8 and front mech therefore 28.6mm.

The drivertrain and wheels look mint and even if seatpost and front mech are wrong size you can pick them both up cheap as chips


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 Post subject: Re: Swapping frame?
PostPosted: Fri Aug 02, 2013 11:16 am 
Retro Guru
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Joined: Sat Apr 02, 2011 11:16 am
Posts: 799
Location: Camden, London
I would say (as am doing this at moment...........)

1) Bottom bracket - 73 or 68mm shell (but also possibly axle length ?, threads should all be british)
2) Headset 1" or 1 1/8" (assuming nothing odd like 1 1/4) and hence stem diameter, and whether forks threaded or ahead
3) Seat tube diameter - external for front mech and seat post clamp
4) Front mech top or bottom pull
5) Seat tube diameter - internal for seat post
6) Wheel spacing - distance between dropouts, but most std these days if similar age bikes

if swapping forks over gets a lot more complicated with axle / crown measurements etc but lots on here about that I'm sure.........

as an edit, you've worked on cars then should have no trouble with bikes, even if you're a bit rusty


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 Post subject: Re: Swapping frame?
PostPosted: Fri Aug 02, 2013 11:26 am 
retrobike rider / Gold Trader
retrobike rider / Gold Trader
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Joined: Mon Jun 22, 2009 11:09 am
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Location: Devon
1997 is a 1 1/8th and that is ahead not threaded too.


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 Post subject: Re: Swapping frame?
PostPosted: Fri Aug 02, 2013 2:40 pm 
Dirt Disciple

Joined: Fri Aug 02, 2013 8:43 am
Posts: 47
Well the bike arrived and its a perfect fit, the seat has to be as high as it can go. Sorry :oops: :lol:

New problem though- the thread has been lost on the cranks so the pedals can't screw in. If I re-thread them the pedals won't fit. I'll have to get new ones?

Other than that I'm really chuffed with the bike


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 Post subject: Re: Swapping frame?
PostPosted: Fri Aug 02, 2013 2:47 pm 
retrobike rider / Gold Trader
retrobike rider / Gold Trader
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Joined: Mon Jun 22, 2009 11:09 am
Posts: 9399
Location: Devon
You sure you are trying to thread the right way?! Heli coil can work else you will need new crank arms.


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 Post subject: Re: Swapping frame?
PostPosted: Fri Aug 02, 2013 3:29 pm 
Dirt Disciple

Joined: Fri Aug 02, 2013 8:43 am
Posts: 47
Cheers yep, anti-clockwise, thread is totally buggered.
Is there a current part to fit? (alivio?)

cheers


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 Post subject: Re: Swapping frame?
PostPosted: Fri Aug 02, 2013 3:34 pm 
Retro Guru
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Joined: Sun Mar 14, 2010 2:33 am
Posts: 2917
Location: daaan saaaf
Yes, make sure you're putting the pedals on the right crank arms, they are "handed", so they are left and right specific - the right side is a right hand thread, left side, left hand thread, the opposite of the bottom bracket threads.

http://www.parktool.com/blog/repair-hel ... w-5-hcw-16

More: http://www.parktool.com/blog/repair-help


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