Raleigh Banana help

[scottarm]

Hi just got an old Raleigh Banana to restore, the first thing I have noticed is there is no rear hanger, the derailleur has it built in. Can I get a conversion so the frame will accept a modern derailleur??

thanks for you help

Scott

 

[originalshinkicker]

Hi Scott - You can get hangers that fasten to the dropout with a little nut and bolt that provide you with the 10mm threaded hole to fasten a rear mech to. This type of thing

http://www.ebay.co.uk/itm/Shimano-Rear- ... 0965230456

 

[scottarm]

Re:

cheers that's exactly what I need, do you need to put a spacer in the other drop out to keep the wheel centre?

 

[originalshinkicker]

Re: Re:

cheers that's exactly what I need, do you need to put a spacer in the other drop out to keep the wheel centre?

It bolts to the outside of the dropout so the distance between the inside of the dropouts shouldn't be affected.

These hangers and mainly used on axles that fasten with wheel nuts so you should be ok (I'm assuming the wheel that was in the bike was a solid axle). If you want to use a QR rear wheel you may need to be careful to make sure the QR fastens and clamps properly.

 

[scottarm]

so with Xmas I haven't progressed too far, but I'm getting there!
next question though any idea what seat post size is needed, I crudely measured it at 1 inch but the post I have that size is just too small and a 27mm is too big, the frame is bog standard 18-23 tubing

 

[shed]

Re:

sorry to jump in but i have a pair of raleigh racer bars cheap if you dont have any,nice bike aswell mate

 

[hamster]

so with Xmas I haven't progressed too far, but I'm getting there!
next question though any idea what seat post size is needed, I crudely measured it at 1 inch but the post I have that size is just too small and a 27mm is too big, the frame is bog standard 18-23 tubing

Time to go and bother your local bike shop and try out a few seatposts. Alternatively spend £15 on a Vernier - even then it usually only allows you to get within +/- 0.2mm.

 

[scottarm]

Re:

I recon its not far of 26 mm, 25.4 with two wraps of insulation tape is a tight fit

 

[hamster]

It is not just about the nominal dimension of the tubing.
Each frame is individual in the amount of heat distortion of the tubing during brazing. So it's best to measure or try. The seatpost should slide in with some light resistance (as it should be almost airtight when dry) for a good fit. Too loose and you will bend and possibly eventually crack the clamping lugs, plus you will ovalise the top of the seat tube.

 

[MrW]

My '84 'gas pipe' Raleigh Pursuit has a 25.4mm seat post, so I'd guess yours is the same, although Raleigh may have changed spec at some point