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PostPosted: Fri Jan 14, 2011 11:26 pm 
Newbie

Joined: Wed Dec 01, 2010 9:19 pm
Posts: 7
Location: West Wales
Hi,

I am the proud owner of a 10 speed Raleigh Sprint, 80's vintage - absolutely love it but the gearing is quite high for our Welsh hills and my ageing knees (54/42 on the front if I've counted them correctly), was thinking about maybe putting 52/39 chainrings on and a 6 speed freewheel. I put a compact on my old Peugeot which helped, but I don't think I need to go that far on the Sprint. Any thoughts or advice gratefully recieved.


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PostPosted: Mon Jan 17, 2011 1:19 pm 
Newbie

Joined: Wed Dec 01, 2010 9:19 pm
Posts: 7
Location: West Wales
Oh OK, don't worry I can think stuff out for myself, its just nice to chat sometimes, maybe my bikes a bit proletarian for this forum, or maybe it was just a dumb question!
Hello anyway, and nice to find a site where older bikes are appreciated.


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PostPosted: Mon Jan 17, 2011 2:29 pm 
Old School Grand Master
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Joined: Tue Nov 18, 2008 10:49 am
Posts: 4061
Location: A veritable floating palace
Not at all! Some of my best bikes were pig iron.

It ought to be fine.

But would it be cheaper to fit a new block instead?


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PostPosted: Mon Jan 17, 2011 2:46 pm 
Retro Guru
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Joined: Sat Sep 22, 2007 12:23 pm
Posts: 747
Location: NEW FOREST HANTS
I like raleighs.... Dont know what to say about your question tho :wink:


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PostPosted: Mon Jan 17, 2011 2:49 pm 
Newbie

Joined: Wed Dec 01, 2010 9:19 pm
Posts: 7
Location: West Wales
Cheers!
I've got a Shimano Sora compact crank set to hand, and that will give me a nice new hollow bottom bracket as well, so I think I may go with that, but I'll probably add a new block as well, reckon it will take a 6 speed - might as well be ready for anything! Don't think the loss off the top end will make much difference to top speed as bot the worlds fastest pedaller anyway.
Good to know there's someone out there...


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PostPosted: Mon Jan 17, 2011 3:10 pm 
King of the Skip Monkeys
King of the Skip Monkeys
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Joined: Wed Nov 07, 2007 4:34 pm
Posts: 26186
Location: Moomin Valley
sometimes first posts get lost in the traffic!

Anyway, if its the same sprint as this one? If so, those cranks are 110 BCD which opens up the world of just about any size chainring you could desire, keeping the black and gold theme as well as the Sugino GT cranks.

Then, you will be able to fit a wider ratio screw on freewheel allowing further drops in ratios for the welsh hills.

And finally, if its the 501 ovalised tubing Sprint, that is a very underrated frame!

Image1


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PostPosted: Mon Jan 17, 2011 4:20 pm 
Newbie

Joined: Wed Dec 01, 2010 9:19 pm
Posts: 7
Location: West Wales
Wow, nice looking bike, mine looks not disimilair, but its the light blue paint job, and the cranks are marked Raleigh Custom. Its only an 18-23 frame I'm afraid, though it doesn't seem that heavy to my admittedly uneducated
senses.


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PostPosted: Mon Jan 17, 2011 4:45 pm 
King of the Skip Monkeys
King of the Skip Monkeys
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Joined: Wed Nov 07, 2007 4:34 pm
Posts: 26186
Location: Moomin Valley
west coast worker wrote:
Wow, nice looking bike, mine looks not disimilair, but its the light blue paint job, and the cranks are marked Raleigh Custom. Its only an 18-23 frame I'm afraid, though it doesn't seem that heavy to my admittedly uneducated
senses.


ah, you chainset may be 116 bcd which limits your chainring choice


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PostPosted: Mon Jan 17, 2011 10:23 pm 
Newbie

Joined: Wed Dec 01, 2010 9:19 pm
Posts: 7
Location: West Wales
thanks - I shall do some measuring and experimenting and I will try and post a picrture when finished Cheers


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PostPosted: Tue Jan 18, 2011 2:06 pm 
Retro Guru
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Joined: Mon Mar 02, 2009 4:22 pm
Posts: 1482
Count the number of teeth on the big cog on the freewheel. They come with a number of different ratios and if you pick one with say 14-28 (or if you think there's enough clearance on the derailleur try a 14-32) the 28 should give you a bit more leverage on the hills. You might find that you don't even need to change the front one.


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