propeller bore reducer bushings

[dunmor]

Does any body know where i can get these from. i have a chance of getting new props but they are for 1.5" shafts. mine are 1.25. many thanks in advance. have been on google but all the supplyers seem to be american.

 

[philip_stevens]

T. Norris may be able to help you. Worth a phone call.

 

[dunmor]

many thanks for that quick reply, just rang them and they cant help other than to sugest i buy a pair of props of them with the correct size at £277 + vat x 2 off them

 

[macd]

Did Norris indicate whether using such a bush was a wise move? I've used them in the past and been impressed by their knowledge (and prices).

I'd have thought anyone competent with a lathe could easily knock up a suitable bush. Assuming your shaft is stainless, you'd have a choice of that or whatever the prop is made from.

The main problem I'd envisage is that two keyways would need to be cut into the bush: one to key to the shaft, the other to the prop. Or, since it's a mere 1/8" thick, a slot allowing you to utilise a larger Woodruff key through all three components.

 

[fisherman]

Try C&O 01626367782

 

[Topcat47]

I've not fitted boat props which do not have keys to locate them on tapered shafts. (ships is different as we all no, chiz) I suppose you might have new 1.5" shafts turned down to fit your existing hull fittings but I wouldn't reccommend that. If you're going to replace the props anyway, get ones for the correct shaft diameter. Props for a 32mm shaft might fit onto the existing tapers, if it's the imperial size that giving you problems.

 

[PCUK]

Any local engineers will be able to make them for you.

 

[colhel]

I can make some sleeves for you, but how are you going to lock the prop to the shaft?

 

[dunmor]

I can make some sleeves for you, but how are you going to lock the prop to the shaft?

if you look on the american sites, they sell them with bigger keys to lock all three together.

 

[pvb]

if you look on the american sites, they sell them with bigger keys to lock all three together.

They usually include a stepped key. The US sites offer also nylon prop reducers which are OK for smaller hp engines. You have 4.107s, I think, and they should be OK with nylon bushings. They're only about $25 each, so would be worth a try.

 

[dunmor]

They usually include a stepped key. The US sites offer also nylon prop reducers which are OK for smaller hp engines. You have 4.107s, I think, and they should be OK with nylon bushings. They're only about $25 each, so would be worth a try.

trouble wiyh nylon is the bonding of prop to shaft. yes you are correct with the 1407s. about 40hp each im told.

 

[pvb]

trouble wiyh nylon is the bonding of prop to shaft. yes you are correct with the 1407s. about 40hp each im told.

Bonding? What do you mean?

 

[dunmor]

the nylon would insulate the prop to the shaft. the shafts are earthed to the engine to stop erosion. would my props erode??

 

[pvb]

the nylon would insulate the prop to the shaft. the shafts are earthed to the engine to stop erosion. would my props erode??

No, they wouldn't. My bronze skin fittings aren't connected to anything, and they don't erode.

 

[dunmor]

No, they wouldn't. My bronze skin fittings aren't connected to anything, and they don't erode.

Fair enough, i just need someone who can supply them in england then.

 

[pvb]

Fair enough, i just need someone who can supply them in england then.

Why not just order from US? They're lightweight items so shouldn't cost a fortune to ship.

 

[dunmor]

would this not take a long time?

 

[colhel]

if you look on the american sites, they sell them with bigger keys to lock all three together.

So the key would have to be 1/8" taller than standard. I assume this would be just a straight key rather than woodruff or such? Would you be able to measure the keyway accurately?

 

[pvb]

would this not take a long time?

Not in my experience. There are quite good links with the colonies, you know.

 

[dunmor]

So the key would have to be 1/8" taller than standard. I assume this would be just a straight key rather than woodruff or such? Would you be able to measure the keyway accurately?

when the boat comes out yes. how much do you reckon it would cost to make one?