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sig mayhem .40 - 4/4/2009 9:57 AM  1 votes
spencer321


 

Posts: 256
Score: 105
Joined: 10/28/2007
Last Login: 10/12/2011
From: orangevale, CA, USA
Status: offline 		hey rc universe i just inheireted a sig mayhem and i was wondering what kind of servos should i put in it for 3d. I plan on putting a os 46 in it so yeah please give me feed back.

< Message edited by spencer321 -- 4/4/2009 10:03 AM >

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RE: sig mayhem .40 - 9/1/2009 12:33 AM   
fourstar2


 

Posts: 15
Score: 100
Joined: 8/28/2009
Last Login: 1/9/2013
From: cedar rapids, IA, USA
Status: offline 		well spencer321 if you want to do 3d with the mayhem your best bet isn't with a two stroke. 3d maneuvers demand an engine with alot of torque such as a four stroke. For instance I have a saito 62a four stroke on my mayhem 40 and it is the best engine i have ever had. I'm not saying that a two stroke wont do the trick but i think you will find that with a four stroke youll be able to swing a larger prop i run an apc 13x6 on mine,  an os 46 more than likely wont do that. So overall a good four stroke for a mayhem 40 is just as good as an anti gravity device mine from takeoff will climb sraight up accelerating until its a black speck and probably then some. Another good tip i have for you is in the balancing portion of instuctions for the mayhem you will see a list of various c.g. balace points, or m.a.c. (mean arerobatic chord) i balanced mine @ 4 5/8 back from the leading edge of the wing. That is about right in between the sport and 3d threshold, the plane flies very well neutrally and it is very stable in straight level flight. when i go to bring it into a hover or harier it still has a tendency to nose over or settle into a mushy stall so if you plan to do some 3d right off the bat i recomend balancing it at least one more m.a.c. back from the first 3d balance point.( about 4 7/8 inches from the leading edge). ok thats my two cents on aerobatics and powerplant. As for servos i would say get some good digital servos for the ailerons i run jr ds 821's and for the rudder and elevator i used jr st 537's , now keep in mind this setup works for me you may find that a different setup may better accomodate your particular style of flying. just make sure that you use higher torque servous to accomodate those huge control surfaces. i hope that this will helpyou out alot because i own the same exact airplane and this is real field data from the horses mouth good luck and happy flyin.

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