Motors in TXT

[Catweasel]

M y TXT is about to undergo a major rebuild. I know that when going brushless, 1 motor = 1 ESC,but what about 2 motors and 2 esc's?
The idea is to use the standard transmission, with 2 brushless motors etc., plus 2 batteries, one for each ESC. Would this work, or will I have big problems,such as destroying the gearbox. Thank you.

 

[Cummins Driver]

Why not just run 1 brushless motor and ESC?

That will provide way more than enough power, and cost way less money. Plus, if im not mistaken, the motor plate on the TXT-1 is similar to an E-Maxx which means both motors spin the same way.

Eric

 

[TXT-2.0]

you should be more than fine with one motor ...... my 5700 brushless is more than enough almost to much power for the truck

 

[Catweasel]

I thought about using 2 motors due to weight of the animal. However,as 1 is recommended, what about this one?

http://www.mtroniks.net/details1.asp/ProductID/631/G2Beastcombo.htm

 

[vwhed1979]

only 1 motor!

one brushless will be plenty. I have the hv maxx, about 700 watts, and running on 2 7 cell packs keeps killing parts. I put in an emaxx transmission, because i kept stripping the stock gears, and hoping the slipper clutch would save the rear end. I am now blowing out the rear end. The differential is especially delicate. When it goes up on two wheels, and spins the ones in the air, it lands and breaks the little shaft that holds the small bevel gears. Now, I have split the drive gear in half, and the hard to find bevel gears are worn out. I plan to keep using the motor, but only use 1 7 cell pack.

Really, it is so fast, the only time I can give it full throttle is on a long stretch of road, and hope it doesn't flip over. I really did not expect it to be this powerful!

The batteries sit way too high in the chassis to use brushless too. The extra speed will flip it over every time you turn, especially with 2 packs. I had to move mine down to the side of the chassis, as low as the bottom of the chassis, and it is much better, but can flip it easily.

I also have revo shafts, and they have held up fine. They are the only shafts that will work.

If I were to do it all over, I would not put that much power in this truck. The cast gears are too weak, and they are hard to find. I just got some on ebay, but they are coming from japan!

 

[tiktok]

ya...might as well put WK axles on it or something. But then mine has a custom fabbed chassis and the only thing left stock would be the center transmission:tong It would be cool if somebody makes the txt gearsets out of hardened steel.

 

[vwhed1979]

the axles would be fine if the gears were stronger. The diff gears especially seem so small for such a heavy truck. Do you think the wheely king axles are stronger?

 

[tiktok]

I meant the gears also not axles. i don't know if the WK are stronger though...

 

[HawnMT]

Wheely King axles are not as strong as TXTs.

A few things that will help with gear wear:

1) Weight: get you weight as low as you can. If your running 2 NiMH packs your grossly overweight go to lipo. 3s is usually enough for bashing with brushed 550 motors or 1/8 scale brushless motors. 2s is enough for 1/10 scale brushless motors.

2) Don't go overboard with power. While a 1/8 scale brushless system can be used if your running a very heavy truck in most cases a mild 1/10 scale brushess will get you all speed and torque you can handle. Somewhere between 3300-4600kv is great for bashing.

3) Lube, lube, lube. Get grease on those gears often. I use a heavy marine grease because it sticks to the gears well. On my basher that I ran a lot I would disassemble the axles a few times a year to grease the gears.

My basher TXT(it's in this section somewhere) has the worst parts from all the TXTs I have ever owned. That includes a set of gears from a truck that the previous owner ran on brushless power and wore them down good. I have had them in that truck for a few years and I still don't notice anymore wear in them from the day I got them and I ran that truck alot(in fact I race it now fom time to time). That ruck ran dual NiMH packs with titan motors and it was crazy heavy but I made sure the gears were well greased.

I race TXTs in various forms(brushed, brushless) and I run them hard. I've pounded the crap out of my race trucks and have never had a mechanical failure. In comparison to Clods my TXTs are tanks and I run the axles near stock. The weakest link I have now are the housings as they have cracked before. Now I epoxy the weak points so even those have held up under the extreme stresses of jumping.

 

[joe]

...in most cases a mild 1/10 scale brushess will get you all speed and torque you can handle. Somewhere between 3300-4600kv is great for bashing...

really? so a single VXL could be fun in a txt?
with just a single 7.2 pack?
would it be faster than my stocker with an evx2, dual packs and 18t motors?

 

[HawnMT]

really? so a single VXL could be fun in a txt?
with just a single 7.2 pack?
would it be faster than my stocker with an evx2, dual packs and 18t motors?

the keyword being "handle"

I don't know if a VXL would be faster than dual packs and 18t but it'll definitely be more drivable. When my basher had the EVX/Titans/Emaxx trans/dual pack configuration it was fast, probably near as fast as the Sidewinder/4600kv/2s combo in it now but you couldn't turn unless you slowed down a lot. And the first time I jumped it off out ten-eighty ramps I snapped an axle housing. While you can strap the dual packs to the side and get them a little lower you still have all that weight putting stress on the parts both during hard acceleration and while jumping.

 

[joe]

ah. point taken.
good call, Kent.
:tmb

 

[tiktok]

Lots of valuable knowledge here. Thank you Hawn!:tmb

 

[mavrim]

The weakest link I have now are the housings as they have cracked before. Now I epoxy the weak points so even those have held up under the extreme stresses of jumping.

Could you point out all the weak spots on the axle that you beefed up? I modified my axles and painted them. I thought of beefing up around the steering knuckle ends of the knuckle, but left it stock.

 

[tiktok]

Anyone ever used XFactor axles?

 

[HawnMT]

Could you point out all the weak spots on the axle that you beefed up? I modified my axles and painted them. I thought of beefing up around the steering knuckle ends of the knuckle, but left it stock.

I'll do a thread when I do a set of axles this weekend. But I basically just put epoxy on the on that flange around the kingpins and down in that channel between the reinforcement ribs on the "C" portion of the axle. 1buktooth, hyperstang00, and I have all cracked our axles there. I also put it on the corners where the "boxes" and the housings meet. I've cracked that area once but that was on a very heavy truck and the lastic was brittle. Still I figure t better to be safe than sorry.

Anyone ever used XFactor axles?

X-Factor axles are very wide, wider than Twin Force axles and parts aren't the easiest to come by, not hard, but not easy. Also the setup for them would be like Twin Forces since you can't use the inverted trans trick on those types of axles because the drveshaft angle would be to steep. In the end folks would rather use Twin Force axles.

 

[joe]

anyone ever use an HPI motiv esc with a 5700kv warp motor?
i guess its a re-badged sidewinder that comes in the flux rtr.
ive been seeing them for around a buck and a half; that doesnt seem to bad.

i wonder if they still use the castlelink for programming.

 

[william g]

anyone ever use an HPI motiv esc with a 5700kv warp motor?
i guess its a re-badged sidewinder that comes in the flux rtr.
ive been seeing them for around a buck and a half; that doesnt seem to bad.

i wonder if they still use the castlelink for programming.

Ummmmm
Why would you buy the rebadged sidewinder system for 20.00 more?
Tower sells the sidewinder w/ motor for 129. You look like this right now :doh paying 20 bucks for HPI stickers Joe. :laugh

Ok, to answer your question YES the castle link will work with it.

I am evil today :spaz

 

[joe]

i swear i saw the hpi unit for less!?!
maybe i was tired yesterday!
:willy

edit: i was confusing the hpi unit for the mamba max.
whats the differance between the mamba max pro and the sidewinder?
both are available with a 4600kv motor.
looks like the pro comes with the castle link.

 

[william g]

max pro blows the doors off the sidewinder

max pro is good up to 6s lipo :willy
sidewinder 3s on 4600 or 2s on anything above

max pro can do sensored motors :willy
sw cannot

max pro can handle hot motors including some 1/8 scale :willy
sw can do midrange 540 and smaller

max pro has built in cooling fan :willy
sw has a heatsink

max pro can make your bed and vacuum your room while playing dvd's :willy
sw plays 1981 pong sports


Only the monster comes with the castle link. Older max esc w/ green heat sink just needs usb cable no link