How to Build a 1/87 Scale RC truck a.k.a.TTTT - Page 9

killer · #**121** 02-02-2003, 12:20 AM

Quote:

Originally posted by arch2b
killer-
very nice work. you have to tell me how and what leds you used for the lights. very cool. is it anything like a led set for a bit?

any luck with the am rx?

:ö: thanks arch2b,
it's the same leds used as backlights on your mobile phone (nokia..etal) am not sure if it is the same led used on bits, i just bought it from a cellphone repair shop cost me $1.80 for 10pcs...

about the AM rx, the only available micro rx most hobby shop have are all in FM version

.. but onw of the shop owner told me that they are expectiing for a new batch of stock to arrive within this month, and they will call me as soon as the stocks arrived.

-æ

killer · #**122** 02-02-2003, 12:25 AM

Quote:

Originally posted by Overlander
Killer,
That is my brand of scotch !

:ö: hehehe.. it helps me a lot building this little truck, and also,.. i burned my finger.. melt some parts there... almost lost a good servo after i accidentally installed battery backwards (again!

), but hey, they taste sooooo good! cheers!

-æ

Silentbob343 · #**123** 02-02-2003, 12:29 AM

Great job Killer

Thorsten · #**124** 02-02-2003, 01:02 PM

Hi overlander,
sorry, it's not my Tatra. I wish it were mine (until the next tank stop).
Me and a few "mikromodell"-guys wanted to know the feeling to drive 1:1 TruckTrial. And in germany are some guys who offer to learn to do so. So we spend some money and order a "one day TruckTrial lesson"

It was a big fun. One day in a large truck. If you are in a Tatra, there is no hill and no barrier that can stop you:-)

Your Jeep looks also fine. In germany there is no reason for driving an all wheel drive car (exept just for fun). So my car is only an old volkswagen-bus.

best regards

Thorsten

arch2b · #**125** 02-02-2003, 01:21 PM

thorsten-
i saw all the pictures of your 1:1 tatra adenture on the website. it must have been very fun.

JTM · #**126** 02-02-2003, 04:05 PM

it actually looks like that hill ALMOST stopped you

arch2b · #**127** 02-02-2003, 09:29 PM

just curious, but i saw this on ebay and wondered if this would work in stead of rigging a servo pcb. it appears to be much smaller.
GWS ESC OR SPEED CONTROL

Dux · #**128** 02-02-2003, 09:35 PM

That'll work, but there's probably no reverse or brake.

Overlander · #**129** 02-02-2003, 10:12 PM

Once all of your parts are gathered, you may stare at the pile and wonder where to start.

It is a good idea to at least sketch out the general arangement, and have a good idea about the relationship between the gearbox, servo, and frame.

I use 3D to model the general arrangement. Here you cn see I am trying two different servo locations for my next truck (my Tatra won't be here for a couple of weeks). After the first one, I learned quite a bit about what I really want (besides a better paint job) and this one will be bullet proof. It will be 2WD but both axles will articulate and be stabilized by springs.
I also want to try to mount the batteries as low as I can and using the 3D to move things around allows me to see how it can be done.

If you have a 3D CAD program, that's great. If not, try to sketch it out with accurate demensions as best as you can. This will eliminate any time consuming re-working.

I use CAD because I am lame with a pencil

killer · #**130** 02-02-2003, 10:31 PM

:ö: Overlander,

man you sure are lucky, 3D CAD is way too big for my comp, but for those who don't have CAD, they can use the o'l MS EXCEL, just reduce the pixels to 8X8, and use the drawing tools, no mess like the old pencil and paper thing,but..... the CAD is still the best

-æ

killer · #**131** 02-02-2003, 10:41 PM

:ö: i was charging my battery early this morning, while waiting for the battery to charge, i peek on my box and found my pending 1/32 4x4 Monster Truck Project... then i look at my 1/87 rc truck, i think to myself, i lost my interest to finish this one

, don't blame me a 1/87 truck is soooooo coool!!!.. right now, i'm on my drawing board designing a simple u-joint for my 1/87 to four-wheel drive this addictive little truck, man i am hooked on this things!

-æ

JTM · #**132** 02-03-2003, 07:20 AM

you ever see the gas tanks on big rigs?? maybe you can mount the batteries somehow like that. one on each side of the frame. i dont know it would lower the center of gravity alot tho. not sure if you could make it look right.

Thorsten · #**133** 02-03-2003, 07:50 AM

Hello Overlander,
very nice drawing!!!

I never use a pencil or a CAD-program to build my trucks.

My way to construct is a kind of "Just in time deployment" ;-)

OK maybe on you way I can reduce my re-working. I will cogitate about it next time.

But allow me one question about your drawing:

Why do you use two servos??? Do you plan a 4 wheel steering like Harry Jacobsen???

best regards

Thorsten

www.mikromodell.de

Overlander · #**134** 02-03-2003, 02:28 PM

Thorsten,

I will only use one servo for steering.

My 3D model is just a test to see different possiblities for the servo location.

3D modeling is not necessary, but drawing out a plan first will save a lot of time and frustration.

You can also use the TLAR method of engineering........

TLAR
That Looks About Right.

This is the method I used for my first UNIMOG.

I think this is what you mean by "Just in time deployment"

-Todd

Overlander · #**135** 02-03-2003, 02:29 PM

Really I was just showing off..........