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I NEED HELP ASAP STARTING!

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vint View Drop Down
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    Posted: 21 April 2011 at 2:38pm
right well last night i got everything charged up ready to go out an have
some fun with my menace 21 today. BUT! i just cant seem to keep it
started :'(. it starts up ONLY once i keep the revs about 1/2 throttle, once
i slowly let go of the revs it starts to cut out > fully let go n it cuts out.

can someone please help me! i wanna go out on it :(. if uploaded 2
pictures of how the needles are, if someone could help me!

http://i905.photobucket.com/albums/ac258/vuhids/IMG01010-
20110421-1432.jpg

http://i905.photobucket.com/albums/ac258/vuhids/IMG01011-
20110421-1432.jpg

pictures wont load so click them links n it should come up!

please hellppppppp lol!

Edited by vint
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vint View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote vint Quote  Post ReplyReply Direct Link To This Post Posted: 21 April 2011 at 4:18pm
well ive just taken it to the rc shop. apparently the tunings fine, the problem
ive got is with my releasing too quick? its staying open which keeps cutting
the car out. he showed me by starting the car with the wheels off the floor
and started first time fine was running perfect. as soon as the cars on the
floor (im guessing when theres load) it cuts out. anyone know what i should
do now? how can i check/adjust the clutch?
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vint View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote vint Quote  Post ReplyReply Direct Link To This Post Posted: 21 April 2011 at 5:54pm
got to the clutch and as soon as i got to it, it feel into pieces! got everything
back together after using the clutch on another one i have. went outside to
try n it n the glow plug run out of charge! not my day lol
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GBDUO View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote GBDUO Quote  Post ReplyReply Direct Link To This Post Posted: 21 April 2011 at 6:32pm
Lol, not a good day for you!

I am not sure the tune is right, the low speed idle (the big screw next to the
fuel line) look like it is screwed in too far, it should be about flush to 2mm
from the carb body. The high speed needle (needle with the brass surround)
looks like it is running too rich and needs a half turn to 3/4 turn in.

The idle looks ok.

Hope this helps!

G
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vint View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote vint Quote  Post ReplyReply Direct Link To This Post Posted: 21 April 2011 at 6:58pm
haha i know dude.

right i was just literally outside n it starts now thank god! the only issue i
have now is that as soon as i remove the glow plug it cuts out? what could
that be? hopefully theres someone online at the moment that could help me
out coz the cars in the garden ready to drive! lol
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Post Options Post Options   Thanks (0) Thanks(0)   Quote vint Quote  Post ReplyReply Direct Link To This Post Posted: 21 April 2011 at 7:20pm
right sorted that problem out lol.

now the issues i have is;

1- theres alot of interference with the signal? its goes like a meter n abit
away n thats it signals lost.

2- also i just et it idle through half a tank, but it sounds like its revving
too high, which needle needs to be adjusted?

3- i have to rev about 1/2 throttle for the car to move a bit, i never had to
rev that much for it too move a tiny bit? for it too move the slighest i only
used to have had to touch the throttle slightly?

sorry for all these questions!
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Post Options Post Options   Thanks (0) Thanks(0)   Quote GBDUO Quote  Post ReplyReply Direct Link To This Post Posted: 21 April 2011 at 9:09pm
2) You need to adjust the small black screw, unscrew it with the engine
running until the engine sounds like it is idling properly, it should idle
high enough not to engage the clutch, but slow enough so that it is not
revving its tits off!

3) I think you should take the air filter off and adjust your radio gear, it
sounds like the grub screw in front of the spring by the servo is too far
away so the throttle bar is not moving for a long time.


1) I had this problem yonks ago and can't really remember how I solved it,
I have a feeling it was the batteries but it could have been a dodgy
receiver. I honestly cannot remember on that one.   Obviously ensure
your transmitter aerial is fully extended!

As for your earlier post, I reckon if you adjust your LSN and HSN to the
settings I described earlier you will be in good shape. HSN should be
about 2 and half times out from fully in if that makes sense, LSN should
be 2mm from flush. Should give you a good base setup to work from.

As the air temp is quite warm at the moment, you will probably need to
run a little bit richer than normal, but it is easier to just play with the
settings until it runs right, you will know when it is!

Graham
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Post Options Post Options   Thanks (0) Thanks(0)   Quote vint Quote  Post ReplyReply Direct Link To This Post Posted: 21 April 2011 at 9:21pm
thanks for all the advice!

first i need to sort this servo problem out n get the signal back. the
antenna is fully out, i got some spare servos from another car that i'll
swap inabit n see what happens. ive changed the batteries again n no
luck. once i do this i can go to a car park n sort the tuning out.

im using a Hi Tec HS5625MG steering servo (high torque?) that makes
loads of noise, is that normal? also even when the controls on n the cars
on the servos start messing around by them self. dunno whats happening
with that. ive check all the wiring n everything seems to be fine.

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Post Options Post Options   Thanks (0) Thanks(0)   Quote GBDUO Quote  Post ReplyReply Direct Link To This Post Posted: 22 April 2011 at 10:23am
I think you should change your receiver/crystal.

Or make sure you are not under any power lines or anything which can cause
interference.

Yeh, that steering servo is quite loud because it is metal gears. Shouldn't be
a horrific noise just more mechanical than the plastic gears.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote vint Quote  Post ReplyReply Direct Link To This Post Posted: 22 April 2011 at 5:16pm
well i changed the crystals n it worked BUT like always i still have the
problem of me having to rev so much for the car to move, n when it does its
not even fast. it just revs n
revs. so much smoke n petrol splashing out the exhaust n it dont go
anywhere?

the bit inside the carb that slides open n shut, is fine, open the throttle
slightly n it will open.

sorry for all this, but ive never had the upper hand of tuning these things.

Edited by vint
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Post Options Post Options   Thanks (0) Thanks(0)   Quote GBDUO Quote  Post ReplyReply Direct Link To This Post Posted: 22 April 2011 at 6:48pm
Right, if there is a **** load of fuel coming out of the exhaust you are
definitely running rich. Try adjusting the screw with the brass surround
about a half turn at a time.

No worries about asking problems, we were all there once!

I have had my Menace and XTr out today, after they were sat for at least
18 months without moving, I dusted them off, oiled everything up,
checked everything was free and spun the engine over. Put some fresh
fuel in, glow plug heater on, dril on, and would you believe it, the Menace
started first time!   

It was all out of tune though, running rich so adjusted it, then it was lean
and now it is running much better, you just have to fiddle. Unfortunately
my e-start allen key slot has rounded off so got to get a new one now.
But I have a spare engine (old worn out one) so will just nick it off that!

The XTr is being a bit more of a pain in the ass, it starts and then dies, I
think my glow plug heater needs a charge and will try again tomorrow.

The key to tuning is understanding what the engine is telling you, there is
a sticky at the top of this forum which myself and Link did years ago and
there is loads of info in there.

Hope this helps!

Graham
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vint View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote vint Quote  Post ReplyReply Direct Link To This Post Posted: 22 April 2011 at 7:25pm
the brass surround your talking about the screw on the carb yh?

i'll have to play round with it more.

haha, thats the thing mine started first time aswell, everythings sorted just
needs a tune n its ready to go! but just cant do it :(
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Post Options Post Options   Thanks (0) Thanks(0)   Quote GBDUO Quote  Post ReplyReply Direct Link To This Post Posted: 22 April 2011 at 8:33pm
Aye

I'll try and get a picture of my settings up tomorrow, but dark now!
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Anthoop Quote  Post ReplyReply Direct Link To This Post Posted: 23 April 2011 at 2:39am

I did not look at the pictures of the needle settings..but every engine will require different needle settings. These settings will vary greatly with many things...fuel/plug/amount of wear/length of fuel and pressure lines..etc.

If GBDUO is seeing that your settings are off by looking at pictures then you are miles away. Tuning the engine is not that hard once you understand what is actually going on...and of course make sure you are using the correct fuel and plug.

Personally I always tune the HSN first and then tune the LSN, the throttle stop/idle screw can be adjusted last...but fine tuning to any of the screws may be necessary to find the perfect tune.

I will put a link to a video that may help you in understanding and learning how to tune an engine. The video is for a different car but it is all applicable....Note- only attempt to tune once the engine is warm....and always stay on safe side..slightly rich is better than too lean.

http://www.youtube.com/watch?v=ma2_CghxiUk 



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Post Options Post Options   Thanks (0) Thanks(0)   Quote Lucyellen Quote  Post ReplyReply Direct Link To This Post Posted: 13 April 2012 at 6:18am
Thanks for sharing.

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