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HomeAircraftHelicopterGasser Model RC HelicoptersEngines › No choke on 990 carb
10-29-2013 12:35 AM  5 years agoPost 1
mustang67ford

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Central Pennsylvania

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I have found out the 990 carb on the g240rc does not have a choke. I will be changing the air filter. Do I need a choke adapter like this or is this carb meant to be used without a choke?

http://www.davesmotors.com/s.nl/c.8.../it.A/id.791/.f

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10-29-2013 01:00 AM  5 years agoPost 2
xcellgasman101

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WOODWARD, OKLA....

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You should be able to tune it so after you prime your pump and fill the carb, and have your Low End set closely, it will start, Now when it's cold, (snow on the ground), it might be trouble some, I have always flown with a volicity stack, I just stick my thumb in there for a couple of pulls, and it's off and running when it's cold outside!! XGM/VGM

John Crotts
www.soonerhelicamproductions.com

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10-29-2013 02:58 AM  5 years agoPost 3
MikeSherman

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Racine, WI

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It'll be even easier if you top start the motor.

Mike

Team QuickUK Pilot
Team Heliproz

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10-29-2013 04:18 AM  5 years agoPost 4
mustang67ford

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Central Pennsylvania

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Is there any issue installing the choke as could it fall/vibrate closed or interfere with air filter mounting?

Good point on top starting, it will be easier. I am also not a cold weather flyer.

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10-29-2013 08:23 AM  5 years agoPost 5
geomecc

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Long Island ,NY

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I have never needed a choke.

R I P Roman Jr. Team SKOOKUM SRW EFC

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10-29-2013 02:40 PM  5 years agoPost 6
rbort

rrProfessor

Franklin, MA - USA

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OR
Choke it by closing the throttle plate almost all the way.

-=>Raja.

MA 1005 Hanson 280, 4225 flts
Spectra 27 3DMax, 3325 flts
Whiplash V1-2 Hanson 300, 1650 flts
Whiplash V2 Hanson 300, 504 flts

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10-29-2013 03:50 PM  5 years agoPost 7
fastflyer20

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N. Tonawanda, NY

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The DDM choke is very restrictive even when opened, I vote no choke. With the right procedure, they start easy without it.

Tom
CAUTION - my posts are based on my experiences, yours may be different.

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10-29-2013 05:07 PM  5 years agoPost 8
mustang67ford

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Central Pennsylvania

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Thanks, I try it without a choke for now.

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10-29-2013 09:23 PM  5 years agoPost 9
rhodesengr

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Pleasanton, CA USA

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I bought the choke version of the velocity stack and have not needed it. However, I do use electric start. It also seems like using the throttle plate as a choke would be a good way to go.

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