What do I need?

[spaz13]

Well, I wanna spend as less as possible. I have 2 servos, pager motor, bit gears, bit motors, soldering iron, dremel, drill, hack saw, and some other tools. What do I need to build something pretty simple? And please give me info on where to get the,. preferably in the US. TIA

[killer]

Originally posted by spaz13
Well, I wanna spend as less as possible. I have 2 servos, pager motor, bit gears, bit motors, soldering iron, dremel, drill, hack saw, and some other tools. What do I need to build something pretty simple? And please give me info on where to get the,. preferably in the US. TIA

:ö: spaz13, man you're at the right track, you already have most of the things needed to build a 1/87 rc truck!...

¤ you have 2servos right?.. how small are they?.. if they are as small as the pico 5.4grams servo, then they are perfect for your project ;)... you need one for steering the front axle, and the other servo.. can be modified to be your E.S.C or electronic speed controller (we've posted threads on how to do this mod)... the pager motor (7mm) in my own opinion, have more torque compared with bit motors, now when you've already modified the servo electronics to function as your esc, you are left with a motor, and servo gear sets... these gear sets are smaller than the bit charge gear sets, well it's up to you if you plan to use them on your truck or not, but the converted servo esc can manage to accept a certain amount of amp load from the motor, that's one reason why you cannot use the gear ratio as the bit-charge gear ratio, which is very high that may damage your electronics.. all you need now is a reciever small emough to fit inside a 1/87 truck, an rc model plane is the best choice and the GWS r-4p FM reciever has the perfect measurement for this project, i believe you already have an FM transmitter right?... and some small batteries, usually the same size as the bit-charge batteries, ei, don't forget the 1/87 model truck body, which i understand is widely available in the US's hobby shop ;) there you have it!.. and in my own opinion, the simplicity of your truck will be based on your chassis design :cool:

[spaz13]

Well, Im trying to make this thing as CHEAP as possible. I have an AM TX, and a normal size RX. I cant afford new electronics, unfortunally. When your 13, money is hard to come bye. Most the things i have came from my broke down RC10GT. I have this servo I think...

http://www2.towerhobbies.com/cgi-bin/wti0001p?&I=LXWC38&P=7

I also have an older regular servo that is messed up, but Im pretty sure the electronics work, just has a messed up gear set. Where do I get the gearset for my truck from? I think I might just make my own custom chassis out of some small aluminum tube or something. I have a real ghetto chassis idea for articulation though. It is only gonna be RWD, and it might be a litle bigger than 1/87, but Im gonna make it as small as possible. I tried to make a pic in MS Paint of my idea.

OK, Ill tell you about the front axle first. All it is is a peice of aluminum tube, with some typeof square attached, with something sticking out for the axle. Do the same on the other side. I dont think it can get much simplier.It is NOT connected to the chassis yet though. But, this is where the articulation takes place. Your gonna laugh, but it should work.

Then, your gonna need to make another rectangular chassis, but a longer. Now, I'll put some pipes standing up to make it where the two chassis's are connected, and the longer one is on top. Now, take that front axle, and put 2 strings on it. then connect them to the top chassis. Now, it should stand normal, but when it goes over something, the axle should give in and be able to articulate very well, depending on how high the top chassis is. Do the same for the back one, but it will have the gearbox stuff etc back there also, havent got that worked out yet. Do you think it will work? Heres a crappy diagram to show what I meant.

Thanks for the help too killer BTW.

[killer]

:ö: spaz13,

With your standard size reciever, removing the cover will help reduce the size and i guess the best model truck you could use in this project, are those truck with trailers (like the Optimus Prime truck ;) ), you can place your electronics and batteries at the trailer... while your servo and motor is at the trucks cab, though i am not sure if your servo would fit in it, and i think you cannot use a pager motor or bit motor on your servo electronic board, as it is written on the description , it says your servo uses a "corless motor" which i understand run by a different electronic board set-up, if we are to compared it on 1/10 electronic lingo... that is "brushless motor" run by a brushless motor esc :cool:. on the gearsets, i guess using a couple set of bit-charg gears would do, cause i think the servo gears used on your servo is quite big in size, go to your LHS and look for a PC-09 gearsets, they are perfect for this project and cheap too! these are the gearsets i used on my 6x6, your chassis? everyone have their own chassis design, and the best part here is making things work, believe me on this, that once you see your project truck move and comes to life.. you'll be the happiest person here at this site :p, show us some pics when you have it done ;)

-æ

[spaz13]

Do you think my crazy idea will work? :P Do you have AIM btw?

Thanks for all the help too.

When I use the servo for my esc, i just use the motor already attached, right?

[killer]

Originally posted by spaz13
Do you think my crazy idea will work? :P Do you have AIM btw?

Thanks for all the help too.

When I use the servo for my esc, i just use the motor already attached, right?

:ö: forgive my ignorance, but can i ask what A.I.M. means?, about using your servo motor for your truck, yes you can, just make sure that the motor is small enough to fit inside your chosen model, and you have to consider the size of your gearsets too, is the motor is attached to the servo circuit board?, if so, if you can remove if from there and use wires to connect if from it's original position may help in reducing size.

[spaz13]

AIM=AOL Instant Messenger. Theese things look cool, but I think I am gonna steer clear of em.