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Old Jun 15, 2002, 03:09 PM
small electrics r BIG FUN
Joined Aug 2000
4,353 Posts
APC 5.5x4.5 or Master Airscrew 5.5x4.5 ?

Wondering if there is a better prop for my 6v Simple 400 and 9x1000 Nimh. The MA seems to be better in the air than a Graupner 5x5 . I've heard good things about APC props.

I do more more cruising around and low fast passes than aerobatics. Anyone flown both ?

Which is faster ?


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Old Jun 15, 2002, 09:08 PM
Mitch G's Avatar
Naperville, IL USA
Joined Nov 2000
1,886 Posts
The APC prop is a bit faster. But, it's also twice as expensive as the MAS. So, with belly landers which inevitably break the occasional prop, I don't think they are worth the extra money.

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Old Jun 16, 2002, 11:00 AM
AMA 697691
Rochester, NY, USA
Joined Aug 2000
8,901 Posts
I have all 3 of the 5.5x4.5 props:[list=1][*]Master Air Screw[*]APC[*]Graupner CAM Speed[/list=1]

They are list in ascending order of hardness, price, and performance.
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Old Jun 16, 2002, 11:09 AM
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downeym's Avatar
United States, GA, Atlanta
Joined Apr 2002
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does that mean all things being equal you like the Graupner CAM Speed prop? can you explain why? More speed? More thrust? More duration? Stiffer? please expound on this.

I have only tried teh APC and It seems to be a better than the stock spoons or the carbon 5x5 props I have tried. I would like to know if you have found something better
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Old Jun 22, 2002, 06:15 PM
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Flying Cat's Avatar
Cary, NC
Joined Jan 2002
334 Posts
This morning I tested two APC propellers and the Graupner 4.75 x 4.75 in my Python. The APC propellers were the 4.75 x 4.75, and the 5.5 x 4.5.

I was disapointed with the APC 5.25 x 4.5, the plane was slugish and quite slower than with either of the 4.75 x 4.75 props.

When I tested the Graupner 4.75 x 4.75, the plane was not as fast as with the APC 4.75 x 4.75.

Conclusion: If you want speed and performance, the APC 4.75 x 4.75 is the best of the three I tested.

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