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Royal B-25 Cowl Question

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Royal B-25 Cowl Question

Old 07-14-2003, 04:50 AM
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PigHeaded
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Default Royal B-25 Cowl Question

Hello,

I am looking at a Royal B-25 kit and I was wondering if anyone knows if a 4-stroke will fit under the cowl? The kit includes the spun aluminum cowls. I was told they have a 4 1/2" diameter.

If not, what is a good 40 to 60 4-stroke that works well inverted.

Thank you,

Jerry Moore
Old 07-14-2003, 10:28 PM
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lrb75
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Default Royal B-25 Cowl Question

Just about finished repairing the basket case I bought at my club auction. I'm using older Saito 45 Specials for power. I have them mounted inverted. They stick out lot but the good news is that the muffler outlet from the cylinder head is just outside of the cowl. So you don't have to cut alot. I cut the firewall out to clear the carb and used Sig engine mounts. I will post some pictures if you are interested. The Saito 50 or 56 are still available and the same size as my engines and should make the plane overpowered. The new Saito 40s are smaller than the 45s I have and should be enough power.
Old 07-14-2003, 11:09 PM
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Default Royal B-25 Cowl Question

Thank you irb75,

I would certainly like to see how you handled the installation.

Do Saito engines have any problems with inverted mounting? I have not used a Saito before and want to make sure there are no real problems with the reliability of the engine.

Thank you,

Jerry Moore

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