Tamiya Speed Controller problem

[James]

Ive got a problem with a Tamiya Ferrari 360 TL01 electric car.

When i push the throttle onto full, the servo moves past the last
contact point and cuts out!! Whilst the reverse doesn't even make it
fully onto the contact.

How do I adjust this so that the distribution is even and the motor
doesn't cut out when I push the throttle lever fully forwards

Hope this makes some sort of sense!

Any help much appreciated

Jay

[James]

Dreamscape,

Thanks for your reply i've tried what you said, and it sort of works
to some extent.. but to cure the problem would require more trim
adjustment than I have!!

Playing around further,I've noticed when I took the throttle linkage
off that the servo has alot more bias forward and not nearly as much
in reverse (Probably twice as much!)Is this normal? If not how can I
adjust this? I would imagine that that would sort my problem?

As for the ESC, I might well consider upgrading, but as this is my
first car I'm gonna wait a while untill I get the hang of things! Any
advice for when I do upgrade?

Thanks in advance

Jay

[MikeF]

hey james,
by 'bias' do you mean that the servo travels farther in 'forwards' than
'reverse'?
if thats the case, investigate what kind of trims your transmitter has.
some radios have Endpoint Adjustment dials (my futaba radios do) where i
can, for instance, dial back my throttle if im letting children or friends
drive my car. Then they only crash at 1/2 throttle... 8)

Additionally, on some better radios you have the ability to set up throttle
for 70/30 operation. If you have a gas car or forward-only electric car then
you need a nice long thottle travel but only a little bit for the brakes.
With a plain ol' mechanical speed control (MSC), you want 50/50
operation....see your manual or - if you dont have one, post the make &
model of yer radio and we'll help you look it up online.

Also, when you do that servo trick - where you remove the control horn and
rotate it one or two splines - its a good idea to zero out the trim dial on
the transmitter before you put the control horn back on.

g/l, mike



"James" <jvbates@hotmail.com> wrote in message
news:995d6b0e.0309280244.6da71e39@posting.google.c om...
> Dreamscape,
>
> Thanks for your reply i've tried what you said, and it sort of works
> to some extent.. but to cure the problem would require more trim
> adjustment than I have!!
>
> Playing around further,I've noticed when I took the throttle linkage
> off that the servo has alot more bias forward and not nearly as much
> in reverse (Probably twice as much!)Is this normal? If not how can I
> adjust this? I would imagine that that would sort my problem?
>
> As for the ESC, I might well consider upgrading, but as this is my
> first car I'm gonna wait a while untill I get the hang of things! Any
> advice for when I do upgrade?
>
> Thanks in advance
>
> Jay

[Dreamscape]

On Mon, 29 Sep 2003 06:27:56 -0400, "MikeF" <vanning@comcast.net>
wrote:

>some radios have Endpoint Adjustment dials (my futaba radios do) where i
>can, for instance, dial back my throttle if im letting children or =
friends
>drive my car. Then they only crash at 1/2 throttle... 8)

Hrm. You thinking endpoint adjustment or dualrates, Mike? Well
spotted, though - could well be an unbalanced endpoint issue.

>Additionally, on some better radios you have the ability to set up =
throttle
>for 70/30 operation.

dammit, it took me paragraphs to say that :P


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