Trans for Maxprop

bluesharbor · Member

Trans for Maxprop

Stanley · Guru

Hi,
The lastest spec engines run up to 3,600 so I have changed the transmission ratio to the 3:1 (actual 2.94:1) to keep the prop speed down. This limits cavitation and prop wash noise.

Set your 16" Max prop to 14" pitch RH and then enjoy the drive from your new engine.
Regards, Stanley

-- Edited by Stanley on Tuesday 2nd of February 2010 02:08:53 PM

gibson · Member

Stanley wrote:

"The lastest spec engines run up to 3,600 so I have changed the transmission ratio to the 3:1 (actual 2.94:1) to keep the prop speed down. Regards, Stanley"

Hmm...it would have been good to know about this before I bought my 1505. I thought I was ordering a 3K RPM engine and when I received it I found it was 3600. The attached 2:1 gear is really a bit too tall. A 3:1 gear would have let me run more than 8.5" of pitch on my 16" three blade max prop and reduce the shaft speed to a better RPM and get a lot more bite in the water with more pitch. Any trade in allowance on the shorter gear? My current engine setup is really less than optimal due to the final drive ratio.

-- Edited by gibson on Friday 5th of February 2010 05:49:31 PM

Stanley · Guru

You can see the transmission ratios available on this page of our website http://www.betamarinenc.com/tranmission%20opt%20small.htm

I suggest that you contact the dealer who sold you your engine as well as contacting me directly.

Regards, Stanley

Beta Marine US Ltd.