My Latest Project - Early 1970’s Grandini
- Thread starter robtims
- Start date
I’m in need of expert advice on threading of hubs and freewheels.
The bike has Campagnolo Record large flange hubs with a rear spacing of 120mm. It doesn’t have the threading marked but does have a single groove on the hub where the threading is marked on later versions. Is this English or Italian threaded?
I have 2 Regina GS Corse freewheels. The one that came with the bike (now with sensible 13-24 sprockets) has no markings on it and screws all the way on with no problem. I believe this is Italian threaded but would like the experts to confirm.
The second freewheel is marked FI on the back which I believe is English threaded. This screws on most of the way but gets stuck about 1mm short of it seating properly if I use my fingers to tighten it. It screws onto another hub just fine.
I’ve measured the freewheel bodies and there is no obvious reason it is bottoming out so I think it is just binding.
I don’t want to damage the hub threads so would be grateful for some expert guidance. If this freewheel and the hub are both English threaded can I do any damage if I grease the threads and then tighten it on to the hub with a chain whip?
The bike has Campagnolo Record large flange hubs with a rear spacing of 120mm. It doesn’t have the threading marked but does have a single groove on the hub where the threading is marked on later versions. Is this English or Italian threaded?
I have 2 Regina GS Corse freewheels. The one that came with the bike (now with sensible 13-24 sprockets) has no markings on it and screws all the way on with no problem. I believe this is Italian threaded but would like the experts to confirm.
The second freewheel is marked FI on the back which I believe is English threaded. This screws on most of the way but gets stuck about 1mm short of it seating properly if I use my fingers to tighten it. It screws onto another hub just fine.
I’ve measured the freewheel bodies and there is no obvious reason it is bottoming out so I think it is just binding.
I don’t want to damage the hub threads so would be grateful for some expert guidance. If this freewheel and the hub are both English threaded can I do any damage if I grease the threads and then tighten it on to the hub with a chain whip?
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Well I’d say if it’s screwed on nearly all the way you have matching threads so maybe bottom threads just need a thread file or needle file run over them just a tad as slight bruising may have occurred along the way..or a little grinding paste so you can work the freewheel back & forth so it seats properly..I’ve done this in the past with no issues with the threads matching of course….just take your time.
Others may have a different solution.
Others may have a different solution.
