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pusher size

Old 05-14-2008, 08:05 PM
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Default pusher size

what size pusher prop should i be using on a 25cc gasser??? the hull is 14in wide. and 36 inches long. from the center of my shaft of my motor to the deck of the hull is 6 inches so i know i could probably go as big as an 11 but ihave no idea, never set up an air boat before.
Old 05-14-2008, 11:28 PM
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Default RE: pusher size

Hmmmmm... Ive never done a gasser that small before. LOL I suppose an 11 x 7 should fit the bill, unless you can raise the engine and go with a 12 x 6 (3 blade) prop.

[link=http://www3.towerhobbies.com/cgi-bin/WTI0096p?&N=P&C=&S=4490111&P=7&F=ZINQ3955&L=ZINQ4107&S1=PUSHER&S2=PROP&S3=&S4=]Here[/link] is a link to the Tower Hobbies selection of pushers.
Old 05-15-2008, 07:13 AM
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Default RE: pusher size

On the 25cc blower engines that I have tested, the 14 x 6 2-blade apc work ok, could use a smaller prop. Trying the MAS 12 x6 3-blade may not be a bad idea. The 11 x 7 will not produce the air flow that you will need to push all of the weight that the gassers have. It will move the boat, but it will not preform all that well.
Old 06-04-2008, 10:52 AM
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Default RE: pusher size

18x6 or 16x8. I have used both with great success. Also, install a 167 carb and it will wake that homie up. The props mentioned above I used the carb that comes with the homie.


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