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Boat Forum / Building / August 2007Fenner Taper Lock Pulleys
I am fitting 2 Fenner taper lock pulleys to a motor shaft and a saildrive shaft and I have the same problem on both of them. The grub screw side on the pulley is on the inside of the pulley - so when pushed home on the shafts the motor/saildrive prevents access with an allen key to tighten them up. The best I seem to be able to do is to tighten up the taper lock off the shaft until a tight interference fit is achieved, then slide on the pulley and secure in place with a machine screw into the shaft - probably as a bored pulley would fitted. I had a sudden flash that perhaps I could tighten up the grub screws from the other end of the taper locks, but there is insufficient access to get the allen key in. Any other ideas out there? CS, No, you can't remove that much material. What is it about the sheaves that you can't turn it over? If you are that short of shaft length, move something. Matt Colie > I am fitting 2 Fenner taper lock pulleys to a motor shaft and a > saildrive shaft and I have the same problem on both of them. The grub [quoted text clipped - 11 lines] > > Any other ideas out there? One shaft is 35mm long x 1 inch and the taper lock pulley is 60mm wide overall and the taper lock part is 38mm - so fits almost exactly on the shaft and unable to tun round. The other shaft is 60mm long, so should be possible to turn round and fit the other way. CS, Are the pulleys so far offset that they can not be reversed on the shafts thus having the clamping and lock fasteners outside? If this would prevent aligning the sheaves, can you side the prime mover to make alignment possible? If that is not practical, can you replace either shaft with a longer version? Matt Colie > One shaft is 35mm long x 1 inch and the taper lock pulley is 60mm wide > overall and the taper lock part is 38mm - so fits almost exactly on > the shaft and unable to tun round. The other shaft is 60mm long, so > should be possible to turn round and fit the other way. > CS, > Are the pulleys so far offset that they can not be reversed on the [quoted text clipped - 12 lines] > > the shaft and unable to tun round. The other shaft is 60mm long, so > > should be possible to turn round and fit the other way. Thanks - one shaft is long enough to turn TLP round, the other is not and shaft cannot be changed. I think using as a bored pulley held on by machine screw will be OK. |
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