Mercury racing prop

[cheetahgod]

Does anyone know where I can find a 5/8" shear pin type racing prop?
Thanks

[dave-bernard]

Ebay at times

[chinewalker]

If for display, you’ll be fine with that. However, for an actual motor you’ll use on a boat, you might be better off finding something specific to your setup. With a 5/8 shaft, you must have a D motor. Find something for a hydro or runabout (utility) as there is a difference. If you want something that will really perform, call one of the prop guys (Craig Dewald, Ron Hill, etc.) and tell them what you’ve got for a motor & boat, and they can set you up – for a price.

[cheetahgod]

Would this fit?
http://r.ebay.com/AdoubO

[cheetahgod]

I’m looking for a race prop for the mark 25. This is an adapter that you can get which allows you to mount 5/8 shear pin type prop.

[chinewalker]

Okay – then it’s a crapshoot. You’d be running props designed for 1:1 or 16:21 gear ratios through your service motor gears. You’d be looking for a larger size hub to accommodate the pins on the adapter. It would be a D prop (55H style) to get the bore diameter. Might end up buying several to find something that’ll work for you.

[mercuryman]

The KG7 has 16:21 gears and the Mark 25 has 13:24 gears so the prop will be turning slower. So say you found a AJ50 for Merc KG7 7 3/4 X 11 it is smaller than the MK25 prop. You can find a 9 X 11.5 prop for the Mark 25 so you go faster using it.

[cheetahgod]

I have this prop.
http://r.ebay.com/cCfDi5

[garry-in-michigan]

I always liked the OJ Props – – – 😕

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