Caliber 3 with Irvine .39  
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All Forums >> RC Helicopters >> Kyosho Helicopters >> Caliber 3 with Irvine .39
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Caliber 3 with Irvine .39 - 3/25/2008 2:17:22 PM   
janfloirs


 

Posts: 8
Joined: 7/26/2005
From: PretoriaGauteng, SOUTH AFRICA
Status: offline 		Hi

Does anyone have any experience with a Irvine .39 motor on a Caliber 3? I am struggeling a bit to keep the headspeed constant during flight. (Only "up and down" hover at this stage). My pitch curves are -4, 4 and 9 for normal flight. I don't bother with Idle up 1 at this stage because of the motor not running as it should. I have a JR 2610 radio. At half throttle the engine sounds fine, but as I increase the pitch a little to almost 3/4, the revs drop. When I pull the stick down again, the revs increase and it sounds as if the engine reaches peak. (If you can call it peak at 60% throttle). My throttle curve is 20, 50, 60, 70, 100 for noraml mode. I am new to nitro helis, so I dont have much experience in setting the engine and knowing all of the sounds it should make. I have been flying airplanes for a few years, but my problem with the heli eninges is that unlike an airplane enige, you can't rev it up to full thorttle to hear if it peaks or not... . I suspect that the problem might lie with the low end tuning, but I'm not sure. Any comments will help. Thnks


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RE: Caliber 3 with Irvine .39 - 3/25/2008 2:47:40 PM   
Cyberfyn



Posts: 981
Joined: 2/10/2003
From: Nottingham, UNITED KINGDOM
Status: offline 		Sounds like a mixture problem. Does the engine produce a lot of smoke and splutter when it loses power?

Ian F.

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Very funny Scotty, Now please beam down my clothes!

(in reply to janfloirs)
       Post #: 2

RE: Caliber 3 with Irvine .39 - 7/3/2008 10:34:32 AM   
janfloirs


 

Posts: 8
Joined: 7/26/2005
From: PretoriaGauteng, SOUTH AFRICA
Status: offline 		Yes it does. If you bump full collective while in a hover the rmp (and obviously headspeed) drops.


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(in reply to Cyberfyn)
       Post #: 3

RE: Caliber 3 with Irvine .39 - 7/4/2008 12:46:48 PM   
Cyberfyn



Posts: 981
Joined: 2/10/2003
From: Nottingham, UNITED KINGDOM
Status: offline 		First, try turning the main needle in by half a turn (clockwise) and see if that helps. You could also re-set the main needle to two and a half turns out from closed and go from there.

Ian F.

_____________________________

Very funny Scotty, Now please beam down my clothes!

(in reply to janfloirs)
       Post #: 4

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