1 inch prop on 25mm prop shaft?

[lawsonmitchell]

Lost my prop last weekend. After hours of swimming in cold water, it looks like I'm going to have to buy a prop. Can I install a one inch bored prop on a 25mm shaft? Where do I find the right metric prop nut and anode for the old metric prop shaft on my 1972 Dufour Arpege. I'm in the Tampa Bay Area.

Thanks,
Lawson Mitchell

[Fstbttms]

It's not a good idea to put the wrong size prop on the shaft. The tolerances are close with a proper fit and you risk losing another prop if you try to fudge it. If you're buying new, any local propellor repair shop will be able to supply one with the proper bore.

[bilgediver]

Originally Posted by lawsonmitchell

Lost my prop last weekend. After hours of swimming in cold water, it looks like I'm going to have to buy a prop. Can I install a one inch bored prop on a 25mm shaft? Where do I find the right metric prop nut and anode for the old metric prop shaft on my 1972 Dufour Arpege. I'm in the Tampa Bay Area.

Thanks,
Lawson Mitchell

What is more important is the angle of the taper. Find out if the 1" prop has the same taper as you your shaft .

If it has the same taper then the only point to note is it might sit nearer the small end of the taper but there should be no problem.

the taper of some imperial props is 1 in 12 and the taper of some metric ones is 1 in 10 however if you have a 1 in 10 shaft and prop or a 1 in 12 shaft and prop then it should work for you. A good machine shop could alter the taper in the prop to fit.