I am trying to recommission my first Scott (47 Flyer) which has not run for over 30 years – the gear lever out of the box is solid and will not move. I have tried tapping lightly and turning with a spanner on the nuts but I don’t want to use any more force until I know what is inside. I can only find a Super 3-speed drawing in ST. I am assuming that the lever turns a steel barrel in the box housing and this could have seized up? Next step is to try warming the box with a fan heater to release and if that does not work, take the end cover off to have a look inside. I would rather not do this, unless I have to at this stage, as I am trying to get an MOT to recover the original reg before I start renovating properly. Box is in (a) neutral as I can kick the engine over. Any drawing and/or experience of this type of problem would be greatly appreciated. Thanks.
There are a couple of pawls inside which can stick and lock the gearchange but the only likely option is to take it apart. Even if it frees off with heat you know there will be corrosion/muck inside that needs cleaning out.
For the MOT you don’t need the bike started or running provided the battery gives enough power to show the lights/horn all work.
Thanks for that – I will go for the MOT and then enjoy taking the box apart.
I’m guessing your bike has a foot change, is it the lever on the front of the gearbox, or the right hand (outside) of the gearbox that is stuck? My reference to pawls is for the right hand side foot lever mechanism. The lever on the front of the gearbox just rotates the selector shaft and that moves a single fork into one of 4 positions (1-N-2-3) so no rotating barrel and pin type arrangement. If the box has had water in the sliding dog can rust onto the splines it moves on. It is not a long job to remove and strip the box just remember the kickstart bronze outer nut that takes the kickstart spring is left hand thread. Also heating the end cover makes removing it a lot easier as a bearing has a press fit in it and must seperate to split the end cover off the box.
Richard, it is the L-shaped lever at the front of the box that is stuck. I’ll let you know what I find. Thanks for the extra info.
Richard, I did say that I would let you know what I found. The sliding dog had rusted onto the mainshaft as you thought and the sliding fork to spindle to spindle bushes were all corroded together. Quite surprising how much corrosion there was, as the mainshaft ball bearing was full of rust and solid and the layshaft ball bearing badly corroded. To cap it all, the layshaft appears to be the seemingly less popular solid ‘wide vintage’ variety. Since also found that the magdyno is 16 years older than the bike – the joys of owning Scotts!
Anyway, thanks for your original advice. Will start looking for a built up layshaft with gears now.