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

CS wrote:
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?

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

CS wrote:
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.

On 20 Aug, 20:54, Matt Colie wrote:
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

CS wrote:
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.

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.