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52, 4stroke/prop selection

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fly boy328/08/2016 19:24:42
3419 forum posts
17 photos

Hi all, some time this week I am going to to maiden (weather permitting) a Maricardo. It comes with a 52 4stroke which is at the higher end of its motor range. I would like a nice pleasurable flight, so what prop can I use to give me this scenario. LoL. I have 2 props available at the moment, 1,11x6, and 2, 12x5. Perhaps neither is quite suitable ?  Thanks


Edited By fly boy3 on 28/08/2016 19:28:30

Edited By fly boy3 on 28/08/2016 19:29:13

Peter Miller28/08/2016 19:28:36
9658 forum posts
1143 photos
10 articles

The 12X 5 will be fine. I prefer a 12 X6 but the 12X5 will do for test flights. IT will make the model a touch slowere but make it climb better..

Think of lower pitch like a lower gear on your car.

fly boy328/08/2016 19:33:55
3419 forum posts
17 photos

Thanks Peter, I think "slower" was the word I was looking for rather then pleasurable. Fingers crossed for the weather. Cheers

Low pass Pete28/08/2016 20:35:07
149 forum posts
90 photos

I am using a 12x6 APC on my OS52 surpass in my Ballerina. This gives excellent performance.

Edited By Low pass Pete on 28/08/2016 20:35:32

Denis Watkins28/08/2016 20:48:22
3388 forum posts
151 photos

Have no reservations FB, with this powerplant and prop, the sound alone will mesmerise you

fly boy329/08/2016 23:19:34
3419 forum posts
17 photos

Nice one Dennis. You are quite correct, love the sound of a 4stroke. I have a venerable Laser 61, which always collects favourable comments from club members even the leccy boys LoL. Thanks LPP too.

Tony Richardson30/08/2016 00:03:35
567 forum posts
25 photos

Like Pete M I prefer the 12x6, I have an OS 52fs in a 6 foot span Sig Rascal and it is perfect, gobs of torg even on floats, go with the 12x5 I don"t think you will be disappointed you can move to the higher pitch later if you feel the need.

Jon - Laser Engines30/08/2016 00:12:07
4328 forum posts
159 photos

I agree with the comments above. 12x5 as a starter for 10 and then 12x6 after that. If you want more trust and less speed, especially for landing, you can also try a 13x5 but this will load the engine a fair bit so will not give maximum performance in terms of HP but will give good thrust.

bert baker30/08/2016 10:44:23
1256 forum posts
268 photos

A nice heavy prop will keep engine running better, Grey Graupner ones work well.

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