Fell out with GTB

[Spencer Mulcahy]

I fell out with my GTB 5.5 the other week and was going to go back to brushed, but I have retrieved it from the bin and installed it again. I think I have found the problem that I was having with it. When I fist put it in my XX4 there was no problem I dont think (I mounted it where the reciever should go as I didnt think that it would fit in the normal position). Then a couple of weeks ago I got it to fit where it should go and since then I have had some major glitching which I didnt realise was happening at York.(so I spat my dummy out with it). The glitching is happening when I put full berrys out of corners but it doesnt happen when it is in my hand I have looked on other forums and people are saying that the motor draws alot of power when at full stick hence the glitching. The best fix is to go to 2.4 ghz which I will as I am saving up for the new Futaba radio but for now is there any thing anybody can think of to sort this out. I am going to try a 27 meg radio to see if that sorts it out. Sorry for the length of the thread.

[Colinevan]

I had a similar prob with my first gtb.....

It turned out to be the Ko receiver i was using... Deffo try a new receiver first.

Hope this helps.

Col.

[Spencer Mulcahy]

Thanx for the reply col going to try my sons 27meg set at next meet cant try it until then as I broke the car the other day (the white bulkhead at the front).

[bigred5765]

i gota spare spence see me at bury

[Spencer Mulcahy]

Not racing until the super cup working so if you can get me one for then carl that would be fantastic.

[bigred5765]

Originally Posted by Spencer Mulcahy

Not racing until the super cup working so if you can get me one for then carl that would be fantastic.

already in stock matey nps

[Col]

Originally Posted by Spencer Mulcahy

......When I fist put it in my XX4 there was no problem I dont think (I mounted it where the reciever should go as I didnt think that it would fit in the normal position)..........

This seems like an obvious fix to me....

[jimarea51]

Spencer,

I've had the very same problem, only I've had the GTB in more than one car, but the symptoms are the same...

Every time you push up to full throttle you get a random glitch...

I've cured it now by getting a 2.4ghz system (Which I wanted anyway).

I've used it several times and it's runing fine now, expencive fix though.

Jimarea51

[Spencer Mulcahy]

Originally Posted by jimarea51

Spencer,

I've had the very same problem, only I've had the GTB in more than one car, but the symptoms are the same...

Every time you push up to full throttle you get a random glitch...

I've cured it now by getting a 2.4ghz system (Which I wanted anyway).

I've used it several times and it's runing fine now, expencive fix though.

Jimarea51

Thanx for the reply Jim that is what I am going to do I am going to get the Futaba T3VCS. I was after a new radio anyway was going to get the new KO but this has made my mind up to get the Futaba as it is 2.4ghz ready. Used to have the old 3VC was a fantastic radio. Now all I have to do is save up £350 to get one it will be in my hands in a couple of months

[Northy]

Have you tried a capacitor plugged into the receiver? Help hold the voltage up when you give it death?

G

[Spencer Mulcahy]

I have read about that on the American forums but I dont know what type or power of capacitor to use. I have one that went on a novak cyclone speed control but dont know if that will be OK.

[Jony]

Originally Posted by Spencer Mulcahy

I have read about that on the American forums but I dont know what type or power of capacitor to use. I have one that went on a novak cyclone speed control but dont know if that will be OK.

Something like a 4700uF, 25V electrolytic would be fine. Works wonders for calming down my reciever which would glitch even with a 27T motor. You can pick 5 of them up for under £1 on ebay (try item 260073541349 for instance). Just get hold of an old servo plug with a little bit of the wire left on it and solder the capacitor legs to the +ve and ground wires. Make sure that you solder the ground wire to the leg on the capacitor which is marked with minus signs. This is important, otherwise the cap will go bang and leave your house smelling funny! You probably want to insulate the legs/solder joints with a bit of electrical tape or heatshrink.

You can make them for less than a quid each - always drives me mad when you see exactly the same thing for sale more than a tenner . I can post a pic if the description isn't clear.

[Spencer Mulcahy]

Thanx for that will try that until I get my new radio gear.

[omen1975]

Try plugging one of these into your receiver.

http://www.amainhobbies.com/product_...oducts_id/6570

Some receivers are sensitive to voltage drop under power mode.

Hope this helps
omen1975

[Spencer Mulcahy]

My loverly wife to be has given me the funds for a new radio, so I went to nitro models yesterday and purchased a nice new Futaba 2.4ghz T3VCS. What a fantastic bit of kit well worth the money and I am now glitch free thanx for all the replys cant wait to use it in anger.