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  #11  
Old 12-22-2019, 04:59 AM
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Capflyer Capflyer is offline
 
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With our James cowl you will use MT's P-469-3 extended hub. Not sure on the prop model because they do not list specifically the I/O360 Angle Valve engine so it will be either the MTV-12-B/183-50B or the MTV-9-B/183-50a. As a previous poster mentioned Eric Greindl at MT will be sure you get the right prop. Eric.Greindl@mt-propeller.com Please let him know James Aircraft sent you his way.

For the cowl and induction, we have about a six month backlog so please order it early so you don't have your build held up later on. Don't forget the plenum, the three work great as a set. We are making a new design and mold for the angle valve plenum right now.
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  #12  
Old 12-22-2019, 07:44 AM
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Default Extended Hub

Good Morning All,
Thank you for the prompt replies. The reason I ask is that I am hoping to not have to put an extender hub on as I have read they increase the stress on the crank during aerobatics. Is there anyway to get an MT prop and a Sam James shorty Cowl + induction without the extended hub?

If not are there other constant speed aerobatic propellers that would fit the IO-360 Angle Valve with a shorty cowl and not require an extender hub?

Thanks again,

Last edited by Craw : 12-22-2019 at 08:01 AM.
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  #13  
Old 12-24-2019, 02:40 AM
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With forward facing induction you will need the long cowl. Both MT and Hartzell's extended hubs are one piece, they do not use a spacer.
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  #14  
Old 12-24-2019, 08:41 AM
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Thanks Mike.

In other words if I go with an IO-360-A1B6 with Vertical induction and a constant speed MT prop, I should not require the extended hub. Without the extended hub I could fit the Sam James shorty cowl? Lastly is the Sam James forced induction (Ram Air) also an option for this configuration?

As previously stated im trying to avoid the use of an extended hub due to its performance limitations for acro. I also understand that the I should be going over 3.8G in acro but I would be more comfertable with a little more buffer room for error.

Thanks all for your continued feedback.
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  #15  
Old 12-26-2019, 04:21 AM
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If you go with updraft induction then you could use the short cowl. The MK I induction is what you would need.
https://i1.wp.com/www.jamesaircraft....pg?w=792&ssl=1

You may want to check with MT first. They have propellers on a lot of aerobatic aircraft and would be a better resource to address the extended hub instead of guessing.
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