Idle = full power
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Idle = full power
I'm helping a friend get his engine running after it's sat for a while. I've got it running but the idle is waaaaaaaay too fast. The throttle servo looks fine to me and the trim is down. My thought is the idle adjustment. Iset it to factory break in settings but it's still running fast, it's like it's wide open at idle.
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RE: Idle = full power
Remove the air filter and check the throttle gap...should be 0.5-1mm. If that is correct but it is still revving high, then the mixture is lean, richen the LSN.
What engine is it?
What engine is it?
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RE: Idle = full power
I see Thunder Tigre 27 on the side, The exhaust dumps out the back of the engine. I've looked at that gap and it looks about right to me, I guess i'll try getting it smaller and see.
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RE: Idle = full power
I can not find a ThunderTiger .27 with a quick search, can you put some pictures up?
Is it a slide or barrel carb and how many adjustment screws are there?
Remember that if the gap is near and it still revs high then the mixture is too lean.
Is it a slide or barrel carb and how many adjustment screws are there?
Remember that if the gap is near and it still revs high then the mixture is too lean.
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RE: Idle = full power
ORIGINAL: proptop
It might be the Super Tigre .27?
It might be the Super Tigre .27?
Is this the one Varhunter?
http://manuals.hobbico.com/sup/supg0727-manual.pdf
#7
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RE: Idle = full power
Hi Anthoop...how are ya!? Where is Somerset? A good friend of mine was born in Kent...Suffolk (I think I spelled that correctly? ) but now lives over here in the states...Montana....but I digress
Actually, this is the engine I was thinking of...used in some of the Duratrax vehicles...
http://www3.towerhobbies.com/cgi-bin...?&I=LXLDF6&P=0
http://www3.towerhobbies.com/cgi-bin...&I=LXLZJ1&P=SM
Edit: Added 2nd link to blue headed version...
Actually, this is the engine I was thinking of...used in some of the Duratrax vehicles...
http://www3.towerhobbies.com/cgi-bin...?&I=LXLDF6&P=0
http://www3.towerhobbies.com/cgi-bin...&I=LXLZJ1&P=SM
Edit: Added 2nd link to blue headed version...
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RE: Idle = full power
I am good, thanks..hope you are too, been a long time since I saw you around these parts. Somerset is way down in the sunny (!) SouthWest, whereas Kent is over to the East....not so sunny.
The plot thickens then...looks like it is possibly the same engine....let us see if you are right.
The plot thickens then...looks like it is possibly the same engine....let us see if you are right.
#9
RE: Idle = full power
Get the "gap" as small as you canwhile still being able to start the car. If that does not work, check the clutch spring(s). I had this problem recently, and it turned out I broke a clutch spring. Let us know how you do.
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RE: Idle = full power
ORIGINAL: Varhunter
I'm helping a friend get his engine running after it's sat for a while. I've got it running but the idle is waaaaaaaay too fast. The throttle servo looks fine to me and the trim is down. My thought is the idle adjustment. Iset it to factory break in settings but it's still running fast, it's like it's wide open at idle.
I'm helping a friend get his engine running after it's sat for a while. I've got it running but the idle is waaaaaaaay too fast. The throttle servo looks fine to me and the trim is down. My thought is the idle adjustment. Iset it to factory break in settings but it's still running fast, it's like it's wide open at idle.
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RE: Idle = full power
Prop top has it right, it has a blue head on it though but that's it. It sounds like it's running wide open. but like i said the carb isn't in the wide open position.
#12
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RE: Idle = full power
There might be some sticky-gooey old oil residue gumming up the works? Maybe try flushing out the carb w/ fresh fuel...you might need to pull the high speed needle out to do this throughly...and clean the slide too...
My thought is that the fuel passages in the carb might be partially restricted by old gummy fuel? (causing a lean condition...and maybe a sticking slide )
My thought is that the fuel passages in the carb might be partially restricted by old gummy fuel? (causing a lean condition...and maybe a sticking slide )
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RE: Idle = full power
You have set the LSN and HSN as in this link? http://www3.towerhobbies.com/cgi-bin...&I=LXLZJ1&P=SM
...and richening the screws (anti-clockwise) makes no difference?
Then I agree that it is probably some gummed up fuel, could be in the carb/tank/pipes/exhaust nipple.
We know the engine is running lean if the gap is small enough...so either we are not supplying enough fuel or excess air is getting in. My guess is fuel starvation rather than an air leak as you say the engine has not been used for a while.
...and richening the screws (anti-clockwise) makes no difference?
Then I agree that it is probably some gummed up fuel, could be in the carb/tank/pipes/exhaust nipple.
We know the engine is running lean if the gap is small enough...so either we are not supplying enough fuel or excess air is getting in. My guess is fuel starvation rather than an air leak as you say the engine has not been used for a while.
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RE: Idle = full power
I set it all to the models book that came with it, not the engine book. I plan on tinkering with it again today. took the carb off, and opened the head up and sprayed carb cleaner in it to try and clean it out, even sprayed the muffler.
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RE: Idle = full power
They were the same as shown there or really close but I figured it out and I feel so stupid, I took the air filter off to check the gap at closed and the servo was reversed. Thanks for all your help guys.
#17
RE: Idle = full power
ORIGINAL: proptop
Hi Anthoop...how are ya!? Where is Somerset? A good friend of mine was born in Kent...Suffolk (I think I spelled that correctly? ) but now lives over here in the states...Montana....but I digress
Actually, this is the engine I was thinking of...used in some of the Duratrax vehicles...
http://www3.towerhobbies.com/cgi-bin...?&I=LXLDF6&P=0
http://www3.towerhobbies.com/cgi-bin...&I=LXLZJ1&P=SM
Edit: Added 2nd link to blue headed version...
Hi Anthoop...how are ya!? Where is Somerset? A good friend of mine was born in Kent...Suffolk (I think I spelled that correctly? ) but now lives over here in the states...Montana....but I digress
Actually, this is the engine I was thinking of...used in some of the Duratrax vehicles...
http://www3.towerhobbies.com/cgi-bin...?&I=LXLDF6&P=0
http://www3.towerhobbies.com/cgi-bin...&I=LXLZJ1&P=SM
Edit: Added 2nd link to blue headed version...
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RE: Idle = full power
ORIGINAL: Varhunter
They were the same as shown there or really close but I figured it out and I feel so stupid, I took the air filter off to check the gap at closed and the servo was reversed. Thanks for all your help guys.
They were the same as shown there or really close but I figured it out and I feel so stupid, I took the air filter off to check the gap at closed and the servo was reversed. Thanks for all your help guys.