Running engine without prop attached

Automotive powered airboat discussion.
raven6947
Southern Airboat Member
Posts: 3
Joined: Wed May 08, 2019 8:06 am

Running engine without prop attached

Postby raven6947 » Wed Sep 11, 2019 1:38 pm

I have my rigging in the shop and out of boat and getting ready to start up a rebuilt engine. Any reason I can not run it with the rotator attached but without the prop to check total advance on ignition. Thanks in advance.

dieseldog863
Southern Airboat Member
Posts: 26
Joined: Mon Oct 22, 2012 11:56 am

Re: Running engine without prop attached

Postby dieseldog863 » Wed Sep 11, 2019 7:44 pm

The engine could run warm/hot, because it won’t have the prop pulling air through the radiator.

SWAMPHUNTER45
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Site Supporter - III
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Location: Naturecoast, Florida

Re: Running engine without prop attached

Postby SWAMPHUNTER45 » Wed Sep 11, 2019 8:20 pm

You can put a box fan or shop fan up on a milk crate and run it for a bit. Do not romp on the gas, there is no real load on the engine so it is going to whip up fast and that is a great way to spin a bearing.

We do the fan thing all the time, it is not as good as the prop for cooling so you need to watch the gauges at all times.


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