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HomeAircraftHelicopterBeginners Corner › start up query
11-03-2004 02:30 PM  13 years agoPost 1
raptordan

rrApprentice

uk

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do anybody elses raptor 50 rev really high on the first start up?nearly got me yesterday,its fine when its warmed up.??????

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11-03-2004 11:18 PM  13 years agoPost 2
Slowpoke

rrKey Veteran

Dublin, OH

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Hmmmm..... Maybe you're overfilling the tank, flooding the motor a little? How do you refuel? Do you pull the line off of the carb, or use a fuel "T"?

DR

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11-04-2004 05:26 AM  13 years agoPost 3
rtrickyjr

rrVeteran

Drumore, PA (SW of Quarryville)

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No
Do you start it by turning the trim up to high on the throttle channel?

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11-04-2004 09:38 AM  13 years agoPost 4
cjw

rrVeteran

UK - Cheshire

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Not really.

Mine needs a little extra throttle trim on the first start, but not much (not enough to grab the clutch or anything) and I can immediately reduce it.

Clive

http://www.cjwoods.com

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11-04-2004 06:42 PM  13 years agoPost 5
raptordan

rrApprentice

uk

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i pull the fuel line to the carb off when i refuel. im using a uniflow setup but it still does it on a normal tank setup.

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11-04-2004 06:51 PM  13 years agoPost 6
clearsky

rrApprentice

connecticut

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Looked at your profile not much i9nformation in there ! ?

If your a beginner I cant stress strongly enough to find a club or some experienced heli flyier,he or she can save you untold grief !...

Keep'um in sight

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11-04-2004 06:56 PM  13 years agoPost 7
raptordan

rrApprentice

uk

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im not really a beginer ive been flyin 8 months now i can do some mild 3d stuff but prefer just crusing around the sky. ive only had this problem since i changed my engine from a enya 35 to an os 50 hyper, it runs great just seems to start up at a high throttle when cold.i can get around it by lowering my throttle curve at start up but i dont think i should have to do that really,never had to before???

ONE life,use it wisely

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11-05-2004 05:25 PM  13 years agoPost 8
Rappy da Raptor

rrVeteran

Dorset

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Someone at my club has got the OS 91 c-spec and when ever he starts it up for the first time it revs right up but then it calms down!

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11-05-2004 05:55 PM  13 years agoPost 9
zagidave

rrApprentice

uk.(north london)

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do you run the engine dry on your last flight of the day (its good practice to do this) you may be leaving unspent fuel in the crankcase, this is not good for lots of reasons,mainly it attracts moisture and will damage your bearings, but may also give the symptoms you descibe.

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11-05-2004 07:02 PM  13 years agoPost 10
BC Don

rrElite Veteran

Calgary, AB Canada

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My experience with plane engines is that this is not normal. However, you may well have to increase your throttle setting to get the engine started (I do this on my Heli and on my planes). Then, once started I'll lower the idle (just move the radio throttle joystick).

In our climate, at this time of year with the temperature below freezing, we have to run our engines at a higher idle. But, this is still well below clutch engagement on the Heli.

The bigger issue at low temps is with planes, you have to keep the idle up otherwise the engine cools off too much and quites. But with the higher idle, landing is an issue because the plane has too much power.

Got Money? Send it to me, I'm a Heli Addict.

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11-06-2004 02:20 PM  13 years agoPost 11
raptordan

rrApprentice

uk

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yes i always end the last flight of the day by letting it run dry,i hover it and do an autorotation to end the day. ive leaned the low needle a bit and it seems to have made a bit of a difference, only revs for a few seconds at first now then settles down.

ONE life,use it wisely

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