How to make the new APC Electric props fit your adapter - RC Groups
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Jun 16, 2001, 12:07 AM
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Joe Elston's Avatar

How to make the new APC Electric props fit your adapter

HI I have found that all my E prop APC's are much too thin for my prop adapters and I cant tighten down the prop screw on the adapter.Has anyone else had this problem? IF so can you let me know what the fix is.
Thanks Joe
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Jun 16, 2001, 12:16 AM
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Ed Lyerly's Avatar
I had the same problem, my solution was just to scrounge up enough of the appropriate size washers to make up the thickness difference.
Jun 16, 2001, 12:20 AM
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Had exactly the same problem.. finally scrounged up a few aluminum washers to fill the gap.
Frustratingly though I've found these props to be less than expected performance/price wise.. I won't be buying more.
Jun 16, 2001, 12:27 AM
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Mark Wood's Avatar
Yeah, I think I'll stick with the MAS/Grish props myself.

Jun 16, 2001, 12:30 AM
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I used the outer plastic stopper, about the diameter of a quarter, from one of my glow fuel tanks and it works great. Made from plastic and adds no weight and is about 1/8" thick. Tom
Jun 16, 2001, 12:33 AM
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Joe Elston's Avatar
Thanks Guys, I think I will use the Gruapner cam props and maybe some MAS wood props. If the performance is not what is expected.
Jun 17, 2001, 02:56 AM
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BEC's Avatar
The early batches of the APC thin-E props had a very thin hub (and the TE of the blades going well aft of the hub face). Current production all have a thicker hub and the blades project back little or not at all, so a spinner can be fitted.

Bare, what was you application? The MA-E props may work better than the APCs at really low RPMS (say 4000), but beyond that the APCs I find much more efficient. You may need to go up a bit in size, though. I was running a 12X8 MA on the LT-25 and now use an APC-E 14X7 at just slightly higher current draw. MUCH better climb and overall performance is similar. I need to try a 13X10 on that power system.

Just a happy customer - I've gone completely over to APC-Es on my current fleet.