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Model Forum / Radio Controlled / Land Models / November 2003



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Col - 23 Nov 2003 01:06 GMT
Hello everybody, Ive always meant to get a R/C car when I was a kid but
couldnt afford it. BUT..Ive just bought my daughter for her 7th birthday a
talking unicorn AND a Tamiya Boomerang.

The unicorn is a mattel unit....................oops start again.

The Boomerang is in very good complete condition with a brand new tamiya
trigger radio control thing. It has an "upgraded MRI modified 45 race motor"
so the bloke said and its had its suspension upgraded with a hop up kit? 4x
oil filled shocks instead of the 3 regular ones. I have a brand new original
motor and a bag full of spares. it has all new bearing throughout a new
speed controller and new tyres and a new resistor on the back (very
important to a 7yr old girl)

It cost 35 GB pounds which seems a good price but what do you all think
purely
out of intrest.

Is there anything I should look out for or be aware of with this car?

And whats so special if anything about the "race motor"

Thanks for any info

Col
Justin Mahn - 23 Nov 2003 03:47 GMT
Just get yourself a line on spare parts. ;)

And it's better to put a stock motor on there and take out the resistor.
The car will go a little slower and you'll have much better battery life.

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Justin Mahn
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> Hello everybody, Ive always meant to get a R/C car when I was a kid but
> couldnt afford it. BUT..Ive just bought my daughter for her 7th birthday a
[quoted text clipped - 21 lines]
>
> Col
MikeF - 23 Nov 2003 11:43 GMT
Whoa, that resistor is what makes the speed controller work - dont wanna take that out.
However, an Electronic speed controller (like this one)
http://www2.towerhobbies.com/cgi-bin/wti0001p?&I=LXUY13&P=7
will eliminate those resistors, give you longer run times, lighter and simpler than your
current Mechanical speed control.
Not a necessity, but consider it if you have problems.

As for the race motor, you may want to consider replacing it with the original one or a
"rebuildable stock motor" like this one:
http://www2.towerhobbies.com/cgi-bin/wti0001p?&I=LXDDA0&P=7
if the car seems too fast for you (her - hehe)
stock motors have 27 turns of wire around the armature (the shaft inside the motor)
The fewer the turns of wire, the faster a motor will go, and the faster it will drain your
battery too!
"Race" motors are available with anywhere from 22 to 7 turns or less depending on how fast
you want.
I dont remember how many turns your motor has (its NOT 45, that hasta mean something else)
but just run it a bit and see if shes too much to handle.

The upgraded bearings and shocks are nice. Tamiya has a habit of including cheap shocks
with their kits and trying to sell you nice ones later for a premium. Good that the
previous owner already paid for them.
Oh, and get more batteries! :)
Replacement parts are generally easy to find on ebay. Just use the search bar.
I dunno what 35 GBP works out to in US dollars,  but you should have paid between $50 and
$100 depending on condition and accessories.

Good luck, mike

> Just get yourself a line on spare parts. ;)
>
[quoted text clipped - 29 lines]
> >
> > Col
dingo - 23 Nov 2003 19:57 GMT
run it on 4 cells.

> Whoa, that resistor is what makes the speed controller work - dont wanna take that out.
> However, an Electronic speed controller (like this one)
[quoted text clipped - 62 lines]
> > >
> > > Col
Col - 23 Nov 2003 23:08 GMT
Um.... How and why?

Thanks
Col.

> run it on 4 cells.
>
[quoted text clipped - 82 lines]
> > > >
> > > > Col
dingo - 24 Nov 2003 17:28 GMT
4 cells slows it down.
less weight, less broken parts.

> Um.... How and why?
>
[quoted text clipped - 96 lines]
> > > > >
> > > > > Col
MikeF - 24 Nov 2003 01:26 GMT
What?
Run whacha got. If its too fast, put a slower motor in.
Save up for an ESC and a few big fat NiMH battery packs.

Soldering irons are for people who know what they are doing.

> run it on 4 cells.
>
[quoted text clipped - 82 lines]
> > > >
> > > > Col
 
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