Electronic's setup. will it work

[allrise2005]

I'm building a stick crawler and this is my plan for electronics:

1. TQ3 Radio system modified for 4ws
2. Integy 55T Lathes with 9t pinions front & rear
3. Hitec HS-645MG servo's front & rear
4. Tekin Rebel 2 ESC

I plan on getting a custom battery setup from cheapbatterypacks.com that will be a 9 cell. I am needing to know if this would be a good setup and if not what else should I consider? thanks in advance.

[kris]

I would not put the rebal 2 on any more than 8 cells if you want it to live a long life if you read most of the threads about them smoking they are running more cells.Good bec but that is about it for high voltage I use an EVX and voltage regulator with a 3 cell lipo it can handle 14.4 volts and no reverse delay unlike the Rebal2. I did not ever hurt my Rebal but never ran more than 6 cells.

[emaxxjeremy]

i would consider a rooster or super rooster for the esc if you are running 9 cells. may also want to go for the 65t motor also on 9 cells

[allrise2005]

i was thinkin about the 9 cell b/c i want to be able to run it for awhile with swaping packs every 15 minutes. im not set on it and would be willing to get something different but i dont have much room b/c its a stick and i dont know what works well and is small...

[srfrkyle1234]

if you are building a stick crawler its not going to have much weight and therefore will last longer then some other crawlers that require more weight. If you want a longer run time, then go with a higher mah battery like a 3000mah or more. then all you will have to run is 5 or 6 cells. the 3000+ mah cells will run for a good 45 minutes and then some.

as for 55 or 65t, its personal preference. 55t is going to give you slightly less torque but more wheel speed then the 65t but the 55t still has ample torque.

[allrise2005]

so would 2/3A cells be the right ones? im looking at the Elite1500A which are 1500 mah each im guessing. how many cells in a pack would i need? sorry for all the newbie questions... i still plan on going with the setup i first posted, all i need now is to know what batteries to use and in what type of pack...

[Kamikaze]

I just want to clarify one thing, the number of cells has nothing to do with the run time. The mah is the capacity of a cell, if you have 1 cell lets say a 3000 mah cell it will deliver 3000 milli amps/ hour at 1.2 volts, milli amp/ hours being the unit of capacity and voltage being the ability to do work. Now you can have 20 cells in series if you want and it will still deliver 3000 mah but now at 24 volts. You don't add capacity by adding cells unless you double them up by runing them in parallel. So in short you will have the same run time from a 6 cell 3000 mah pack as you would from a 10 cell 3000 mah pack, just the 10 cell pack will be faster.

Of course not running at full throttle on the 10 cell pack would give you the same result as full throttle on the 6 cell pack I guess you could argue the differences in amp drain but oh well 6 to 1 a half a dozen to the other.

[allrise2005]

still dont know what i need! thanks for explaining thinkg though

[Kamikaze]

If it was me I would get 7 elite 4500 mah cells in an odd double. With 55 turn lathes a 9 tooth pinions it will be great, I ran that setup in my comp buggy for a while, I liked it alot. I curently run 4500 mah cells and my runtimes on 2 55 turn lathes were closed to 90 minutes. But if you are running a stick I would concider buying loose cells and puting them under the knuckles. you can put 4 on the side farthest from the servo and 3 on the other.
I think you will be happiest with 7 cells, your esc will thank you.

[clodstall]

i run 55 turn axle snapper motors, 2 evx's. 8 tooths,12 cells at the moment can run 28 cells if i want to. 24v motors.. almost unstoppable.
i get about 2hrs run time. 3300's also.

[allrise2005]

and i thank you very much for the help! your great

[todd1803]

My opinion is that you need better servos. You will either strip them out, or decide soon enough that they don't have the nutz to swing big tires around on the rocks. You can find used Airtronics or JR for the same money if you shop around. I bought three of the 645MG's before I really knew what I was doing, one is totally stripped, one barely works, and the other is my emergency backup now.

[allrise2005]

Originally Posted by todd1803

My opinion is that you need better servos. You will either strip them out, or decide soon enough that they don't have the nutz to swing big tires around on the rocks. You can find used Airtronics or JR for the same money if you shop around. I bought three of the 645MG's before I really knew what I was doing, one is totally stripped, one barely works, and the other is my emergency backup now.

do you have part numbers or modle numbers for these other servos?thanx

[allrise2005]

BUMP! Anyone have any recomendations for the JR or Airtronics? thanks