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  190 Montauk Propeller: Where to Buy Spare, Where to Store It

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Author Topic:   190 Montauk Propeller: Where to Buy Spare, Where to Store It
Whalerdog posted 06-29-2008 04:42 PM ET (US)   Profile for Whalerdog   Send Email to Whalerdog  
Is aluminum OK for a spare propeller [for a Boston Whaler 190 MONTAUK that has a Mercury VENGEANCE 13.25 x 15]? Where to buy? Local shop was $150 for aluminum and I saw online [for less].
davej14 posted 06-30-2008 10:17 AM ET (US)     Profile for davej14  Send Email to davej14     
For my spare I have an aluminum Black Max with a splined hub (no FLO-TORQ insert required). The aluminum saves weight and costs much less. You should be able to get a good price on [on-line auction websites]. I keep the prop, a spare nut retainer, a nut, a thrust washer, a floating plastic prop wrench and a plastic block to prevent the prop from turning while torquing the nut in a sealed inexpensive plastic container I fount at Target. A good idea is to practice the replacement with the parts on hand while on land to make sure everything fits.
Whalerdog posted 06-30-2008 02:17 PM ET (US)     Profile for Whalerdog  Send Email to Whalerdog     
Thanks for the tips!
jimh posted 06-30-2008 11:11 PM ET (US)     Profile for jimh  Send Email to jimh     
An aluminum propeller is fine as a spare. Propellers are often sold at considerable discounts from on-line sources, however, you typically can't exchange or return them to those vendors. If you buy the propeller from a local store, you can often get them to agree to exchange it for a different size after a sea trial, as long as there is no damage to the propeller. This is a good way to make sure the propeller you buy will be suitable.

Getting an aluminum propeller of the same diameter and pitch as your Mercury VENGEANCE is a good start, but it may not produce the same performance.

davej14 posted 07-01-2008 05:31 PM ET (US)     Profile for davej14  Send Email to davej14     
Cheap is good for a spare!!

My Vengeance 18P is about equivalent to the Black Max 21P on my Merc 75 Hp 2-stroke. For the aluminum spare I would move up 2 inches in pitch.

Chuck Tribolet posted 07-02-2008 09:50 PM ET (US)     Profile for Chuck Tribolet  Send Email to Chuck Tribolet     
A backup prop doesn't have to be perfect, just good enough to
get you home. A half-decent used aluminum prop of close to
the right pitch will do. The important thing, if you boat
where you might need it, is to have the prop, and all the
tools (wrench) and parts (spare nut, washer, and cotter pin)
on board. Nuts, washers, and cotter pins are so cheap I'd
have two. And run a trial fit.

Now, in Monterey, the odds of hitting something away from the
ramp are slim. If it comes up that high, it's got kelp on
it. So stay out of the kelp. I've dinged the prop three
times, all three at the ramp. None was even close to fatal
(the last one got me to buy an new prop, but the old prop
straighted out just fine in a vise).


Chuck

Whalerdog posted 07-03-2008 05:56 PM ET (US)     Profile for Whalerdog  Send Email to Whalerdog     
Why would aluminum pitch be need to be increased?
Feejer posted 07-03-2008 08:52 PM ET (US)     Profile for Feejer  Send Email to Feejer     
Aluminum will flex more than a SS prop

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