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1978 Raleigh Pro Personal Rebuild

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1978 Raleigh Pro Personal Rebuild

Old 04-09-20, 01:41 AM
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1978 Raleigh Pro Personal Rebuild

I have a 1978 Raleigh Pro that Im rebuilding for a light around towner for now, my memory of sizing / specs is less than fair.


Looking to build a 6/7 speed, with just a single chainring up front for now.


Components:

Dura Ace 7400 RD and Cranks

Mavic branded hub Campy clincher 126mm.


Just working on the drive train for now, I gotta find a BB and freewheel for now.
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Old 04-09-20, 05:22 AM
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Backtoahobbie Welcome! To be able to post pics on the thread, you need 10 posts. But you can upload pics to your albums and then we can post from there for you. Lets see some pics!

Your Raleigh is likely 120 old in the back so putting a 126 in there will be a bit of a challenge. You may want to spread the frame. There are several good sites that provide good directions for spreading the frame. Two important aspects, well three, with the first is to reinforce the brake and chain bridge first, ensure there is equal amount of spread on both sides, and finally, make sure your hanger is parallel to the center of the bike plane. Not spreading the frame is an option but will be tough to insert wheel and you don't know if the spread will be even and the hanger may be off ever so slightly. Oh an watch your chain line with that crank.

I don't know off hand but you may want to find out the max sprocket size for the RD to make sure it will work.
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Old 04-09-20, 07:50 AM
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Originally Posted by SJX426 View Post
Your Raleigh is likely 120 old in the back so putting a 126 in there will be a bit of a challenge. .
My 1973 Raleigh Pro had 126mm spacing, 6 speed freewheel
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Old 04-09-20, 08:27 AM
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Welcome Backtoahobbie
Check this out.....1978 Raleigh Pro Mk V: A Museum of Super Record (Many pictures)
And there are other threads about "your" bike. There is a search function to show you more (use advanced).
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Old 04-09-20, 11:04 AM
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Originally Posted by alcjphil View Post
My 1973 Raleigh Pro had 126mm spacing, 6 speed freewheel
I am now calibrated! Thanks!
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Old 04-09-20, 07:33 PM
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Originally Posted by SJX426 View Post
I am now calibrated! Thanks!
120mm. Iím trying to figure a bb an spindle length. Appreciate the cycle sass
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Old 04-09-20, 07:45 PM
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Originally Posted by Backtoahobbie View Post
120mm. Iím trying to figure a bb an spindle length. Appreciate the cycle sass
Are you thinking about bottom bracket spindle length or rear triangle spacing? The raleigh pro was an early example of 126 mm dropout spacing, nothing to do with bb spindle length which depended on the crankset being used
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Old 04-09-20, 09:46 PM
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Originally Posted by alcjphil View Post
Are you thinking about bottom bracket spindle length or rear triangle spacing? The raleigh pro was an early example of 126 mm dropout spacing, nothing to do with bb spindle length which depended on the crankset being used
bb spindle length, 112, 110?
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Old 04-09-20, 10:04 PM
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Posting Pictures Soon
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Old 04-10-20, 11:06 AM
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Originally Posted by Backtoahobbie View Post
Posting Pictures Soon
Good! I would like to see a 126mm Rim!
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Old 04-10-20, 11:29 AM
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Originally Posted by Backtoahobbie View Post
bb spindle length, 112, 110?
First name the crank. Mfg, model, and sometimes year all can make a difference.
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Old 04-11-20, 04:43 AM
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My 1978 Mk V has 126mm spacing
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Old 04-11-20, 05:37 AM
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The 1979 model I have since new is 126mm axle spacing. The 1973 my brother has is 126 axle spacing. As for BB spindle, will need to spec according to Shimano 7400 crank recommendation. Did not look it up, but I believe it is 113mm. Anything over 112 will work.
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