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Vaquero Prop
Dear Randy,
I just purchased a 1994 Xstream Vaquero. The boat is in great condition.
Part of the reason I bought the boat is because of the "low"
power that is currently on it - as I figure it has not been abused. It has
a stock 1994 Johnson 115 Hp bolted directly on the transom in the lowest
holes (shaft about 5"
below pad). It is running an OMC SST II 12.75 x 23 aluminum prop that the
previous owner modified up from a 19 pitch . . . so I don't really know
the exact specifications on it. She seems to be running right around 5500
rpm when I get her up and flying. And boy, what a nice feeling . . . even
at these relatively slow speeds!
The future of this boat holds more horsepower, but for now I would like to
buy a stainless steel prop, raise the engine up on the transom a bit and
just enjoy it. I've been through your technical notes on set up for Vipers
and Vectors in this power range and you seem to recommend the Yamaha drag
in a 14 x 24 pitch. My question is: do you think it can spin this prop? I
just want to confirm this before I go through finding and rehubbing one. I
don't have a lot of experience with the Hydrostream hull designs, V-4s or
the Yamaha prop. My previous boats have been big block I/Os.
Thank you very much in advance for your help. Feel free to offer any other
advice, too.
Sincerely yours,
Rich
Rich,
I don't know what your prop is. The most you can change pitch is about an
inch up or down. For now, leave it as is and locate a 13 1/2 x 22 OMC
Raker. Even a 13 1/2 x 20 will be better than what you have. Rakers
measure bigger than stamped so the Raker will work great with your V-4.
You also don't need to have it rehubbed. Give it a try.
Randy
Please submit
whatever questions you have to IHRTechTalk@yahoo.com.
All questions and answers selected will be displayed on this page as they
come in. Note: though all boaters are welcome, priority may be given to
I.H.R.
members. Randy can not be held responsible for any advice
given. Though his information and expertise is second to none, he
has no control over what you do with your boat. It is up to you to
boat safely and act responsibly, and his advice is only to be used as a
guidance for your high performance boat/motor of which you are the one
responsible for the risks involved.
Thanks,
Mark C.
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