RunRyder RC
 6  Topic Subscribe
WATCH
 1 page 1030 views
Scorpion Power Scorpion Power
HelicopterJR Heli Vibe 90/50, Sylphide 90, GSR260 › jr venture 30 cp engine toooooo hot!
08-08-2007 02:15 AM  10 years agoPost 1
Turner0022

rrApprentice

Old Hickory Tn

My Posts: All  Forum  Topic

im havin a overheating problem , it starts easy idels great gose up into a hover at about 3/4 throttle, but when i punch it , it is weak . then when i land it it is still running smooth but it is super hot ! drop of water on motor sizzels ! so should i richen up low speed needle ? i allready checked the pitch at bottom im -2 top +9 .i opened up the high end needle to 4 turns and its still hot and no power. any help would be great !

I am unstable and have no safe mode

PM  EMAIL  GALLERY  Attn:RR  Quote
08-08-2007 08:26 AM  10 years agoPost 2
Spacey

rrVeteran

Pretoria, South​Africa

My Posts: All  Forum  Topic

You don't perhaps have someone more experienced close by to try and help? There's a number of things that could cause your problem and it is hard to help for me without actually seeing the machine fly. For instance it could actually be that you're running way too rich and loading up the machine. Or just simply running too low a throttle to pitch curve which is loading up the motor too much. If a motor labours it'll get hot, period.

But there's of course other things that could cause it also like fuel supply problems and a dirty carb/filter etc. Take the entire fuel plumbing system apart and replace all the fuel tubing if you can, from the clunk line right through to the carb and muffler. Check the fuel filter for dirt and clean it out properly. Also if you can swing it just replace the fuel filter, it could be that it's leaking air somewhere. Also check the tank's cap by filling the tank up completely and letting it sit for a while after you cleaned it up properly, maybe put some pressure on also and leave it for a couple of hours, check for leakages.

Is there any vibrations on the heli when it's flying? Vibrations could cause the fuel to foam and this will let air into the motor which is very bad.

Also open the motor up some by taking off the head and the muffler, check the piston properly for damage, any scratches and things? Could be that something got into the motor and then you'll experience this problem. Maybe a bearing packed up?

Next you should open up the carb, clean it out PROPERLY. If dirt got into one of the jets, needles whatever it'll cause your problem.

Is the fuel a nice and fresh can? Borrow a tank from a mate to check you didn't get a bad batch?

All these things sound like alot of work but it's really quick and easy to do. Then fly again and start the needle settings where the motor's manual suggests, work from there. Also check your headspeed when hovering, if it's too low it'll just simply load the motor too much. Check the heli when it's flying for vibrations, fuel foaming, too much smoke pouring out suggesting it's rich.

Sorry, it's a long post but as you can see there can be quite a few factors causing the problem. Take things step by step and you'll get it fixed up.

Cheers,
Spacey

PM  EMAIL  GALLERY  Attn:RR  Quote
08-08-2007 12:38 PM  10 years agoPost 3
Turner0022

rrApprentice

Old Hickory Tn

My Posts: All  Forum  Topic

this is a new heli and motor so cleaning is not the issue . no vibrations and pitch is right . im not a newbe at rc helis its just im a electric heli guy and havnt had a gas heli in a while . thanks for your post !

I am unstable and have no safe mode

PM  EMAIL  GALLERY  Attn:RR  Quote
08-08-2007 12:55 PM  10 years agoPost 4
Spacey

rrVeteran

Pretoria, South​Africa

My Posts: All  Forum  Topic

Dirt into the carb could have happened on the way to the field. Fuel lines getting a small hole could have happened while building. And yes something getting into the motor could also have happened the first time you started it.

Seriously, check everything first before you start it up again. You don't want to cease up that motor.

PM  EMAIL  GALLERY  Attn:RR  Quote
10-23-2007 11:23 AM  10 years agoPost 5
smythsta

rrNovice

Melbourne, Australia

My Posts: All  Forum  Topic

Ouch to touch Venture engine.

You should modify the fan shroud. The fan doesn't cool the head too well because of the huge gap between it and the motor. Get a piece of sheet aluminium (coke can etc) and modify the inside of the shroud so as the fan blows air onto and around the head. An easy way to do this is to make a template out of cardboard first then trace it onto the metal. You need to remove the engine and refit it a couple of times. Get a couple of small screws and screw the metal to the inside of the fan shroud. You can't even notice its there when done correctly. I got this tip from a World Champ. I can post photos of the mod if you require, however i'm not logged on that often. Just now and again. Hope this helps.

I need all the help I can get!!!

PM  EMAIL  Attn:RR  Quote
10-23-2007 04:18 PM  10 years agoPost 6
JKos

rrProfessor

Redondo Beach, CA

My Posts: All  Forum  Topic

smythsta has an excellent point. My first heli was a Venture 30 and extending the fan shroud really helped with the cooling.

- John

RR rules!

PM  EMAIL  GALLERY  Attn:RR  Quote
10-24-2007 05:17 AM  10 years agoPost 7
Altrex

rrApprentice

WI

My Posts: All  Forum  Topic

.

which motor are u running?

PM  EMAIL  Attn:RR  Quote
10-24-2007 01:07 PM  10 years agoPost 8
dick smith

rrApprentice

perth

My Posts: All  Forum  Topic

yeh bro... post a pic of the shroud mod... thanks

PM  EMAIL  Attn:RR  Quote
11-04-2007 11:53 PM  10 years agoPost 9
Billj

rrApprentice

Max Meadows,​Virginia

My Posts: All  Forum  Topic

I have a Webra 35 in mine and does the same thing....

Head speed at hover looks good ( flys fine) but engine will start to sag.... BAD NEWS...

What would be a suggested RPM at hover ?

Thanks...good post

Bill

PM  EMAIL  GALLERY  Attn:RR  Quote
11-07-2007 05:05 PM  10 years agoPost 10
RotorRage

rrVeteran

Lake Charles, La.

My Posts: All  Forum  Topic

Are you running a header tank? Vibration can cause your fuel to foam and your engine will run lean. A header tank will help seperate the air from the fuel. You should still check all other causes, because a header tank is a bandaid not a fix.

A friend will bail you out of jail. A real friend sits with you in the cell saying"That was awe

PM  EMAIL  GALLERY  Attn:RR  Quote
WATCH
 1 page 1030 views
Scorpion Power Scorpion Power
HelicopterJR Heli Vibe 90/50, Sylphide 90, GSR260 › jr venture 30 cp engine toooooo hot!
 Print TOPIC  Make Suggestion 

 6  Topic Subscribe

Saturday, November 25 - 11:40 am - Copyright © 2000-2017 RunRyder   EMAILEnable Cookies

Login Here
 New Subscriptions 
 Buddies Online