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MCD Throttle Problem.

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Old 07-22-2007, 03:52 PM
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Default MCD Throttle Problem.

Hi All,
I seem to be having problems with the throttle not shutting down on my MCD Blueline, it seems ok for the first minute then it seems to hang on or open late, its almost like a delay from the tranny to the car. I am running Futaba 3CV With Pcm Rx, fail safe set to cut the motor if it picks up interference, so if it was picking anything up it should shut down right? have noticed the plug cap was lose so changed it, and put on a brand new throttle servo but it still does the same thing. I know there is a lot of metal bits spinning around so maybe picking up metal noise, its such a shame as I have not been able to use the car for fear of it running off, even with the fail safe I dont trust it, maybe move the antena away from the motor, or maybe the cells might not be able to handle those 2 big steering servos, come to think of it it does seem to happen more when you turn it. Can anybody help??
Thanks
Steve.
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Old 07-22-2007, 04:00 PM
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John H (DK)
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Default RE: MCD Throttle Problem.

Hi, if you have been driving in sand or dust, try to see if the throttle axle on the caburator is moving freely, we have had several incidents where the throttle has been sticking when driving on dusty tracks.
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Old 07-22-2007, 05:09 PM
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Default RE: MCD Throttle Problem.

we were having a problem with the throttle linkage sticking and we done this mod using the fg throttle linkage and havent had any problems so far with it sticking

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Old 07-23-2007, 01:45 PM
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Default RE: MCD Throttle Problem.

Thanks, but my throttle linkage is set up the same, it all works fine but when you drive it, every now and then it seems to want not to shut off. Done a range check with the motor running and with motor off seems fine, only when you actually run that it seems to have a mind of its own now and again.
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Old 07-24-2007, 02:24 AM
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Default RE: MCD Throttle Problem.

As Whizzy said, it sounds like the linkage is sticking, ie not sliding smoothly through the slider. Oil helps, but doesn't cure.

Mine did this, and it was because the linkage was at an angle, so I added a spacer between the slider and the servo horn. No problems since, and I race in dusty conditions

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Old 07-24-2007, 12:10 PM
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Default RE: MCD Throttle Problem.

Thanks guys, but my throttle is not sticking, been told that it could be my tank, as it is a new one and has not got a breather, fitted one in tonight and going out to try it, let you know how I get on. Just one other thing, I have noticed that my throttle servo gives a bit of a twitch when I work the steering?? could the steering servos be giving out some sort of noise?
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Old 07-24-2007, 01:09 PM
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Default RE: MCD Throttle Problem.

depends on what radio you are running

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Old 07-24-2007, 04:13 PM
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Default RE: MCD Throttle Problem.

Ok guys got it sorted, it was not having a breather on the tank !! who would have thought it ? must of been running lean, did not miss a beat untill one of the front bolts fell out of the steering hub, shame as I was setting up my new 29cc motor and adjustable clutch, never mind always another day, its just not quite peaking right out.
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Just need to put the stickers on now.
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Old 07-24-2007, 04:55 PM
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Default RE: MCD Throttle Problem.

Nice car, it looks so clean without the stickers......
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Old 07-26-2007, 01:51 AM
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Default RE: MCD Throttle Problem.

Gorgeous car, good job.
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Old 07-26-2007, 04:34 PM
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Default RE: MCD Throttle Problem.

Thanks Guys, got the stickers on now, looks cool, will post some pics tomorrow, untill then, this is what happens when you run on grass without a filter on the fan cover[X(]
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Old 07-27-2007, 10:04 AM
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Default RE: MCD Throttle Problem.

Well here it is guys, got to cut down the body posts and paint the rear spoiler, stickers to go on the rear spoiler, but nearly finished.
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Last Pic is how I bought the car.
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