Fender bolts for 1973 Raleigh Gran Sport
10-14-21, 05:25 AM
#1
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Fender bolts for 1973 Raleigh Gran Sport
M6s are just a little too big. M5s slide right through the holes both front and rear. The holes are threaded. What is the correct fender bolt for these bikes? Yes, I can put a nut on the M5s, but I would prefer to do it correctly.
10-14-21, 06:34 AM
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I'd guess some sort of Whitworth bolt, but I'm also surprised that M5 is too small. I've usually found on those old Raleigh road bikes that M5 is too large. I'd re-tap for M6.
10-14-21, 07:02 AM
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What does an American 1/4"-20 bolt do in the hole? Can you "start" an M6 but it quickly binds up? Or does it not even catch the thread? Being that a M5 slides right through, it'd have to be at least Whitworth 1/4" if it's Whitworth, and an American 1/4-20 bolt may screw right in.
Could be Whitworth or could be some other odd British size (British Standard Cycle and British Association are other ones I've seen on bikes).
Could be Whitworth or could be some other odd British size (British Standard Cycle and British Association are other ones I've seen on bikes).
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10-14-21, 07:55 PM
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Originally Posted by scarlson
What does an American 1/4"-20 bolt do in the hole? Can you "start" an M6 but it quickly binds up? Or does it not even catch the thread? Being that a M5 slides right through, it'd have to be at least Whitworth 1/4" if it's Whitworth, and an American 1/4-20 bolt may screw right in.
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10-14-21, 09:24 PM
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Originally Posted by furiouschads
Yes, an M6 starts but it immediately binds. I'll try a 1/4 20 before tapping them all to M6.
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10-15-21, 06:50 AM
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I'd go with M5 and a nut. I understand the desire to 'do it right' but I don't see how changing the threading in the frame is better than something that's completely non-destructive. But as @due ruote said... you do what you gotta do.
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10-15-21, 06:42 PM
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Originally Posted by furiouschads
Yes, an M6 starts but it immediately binds.
My GS also has different sized holes front and rear, haven't bothered to find out what they are...
