Mad Bull & Lipos.

[BigSteve]

Hi all I have a beat up mad bull runner that's fitted with a sport's tuned motor, full bearings and cva shocks. My question is would it be ok to run with 2s Lipos.

Steve.

[Wooders28]

As long is it's a hardcase lipo,I think the only issue would be that you would need a low volt alarm of some sort.

[XV Pilot]

Indeed. The Mad Bull gearbox is extremely tough, and can take a lot of power, so the extra voltage from a LiPo won't hurt it. Just run a steel pinion and keep the wheel nuts tight so the hex splines don't wear, and all will be well.

[bsy2010]

I'm running my Mad Bull with a 3500v Brushless and 2S Lipos. With a steel pinion no issues at all, if you find a Lipo that fits

[werewolf]

I'm running my Mad Bull with a brushed 650-sized 12x2 motor and 2s lipo. No problems whatsoever

[GregM]

I'm running my Mad Bull on brushless and LiPo too. Tough buggy. One issue is finding a LiPo that fits the battery compartment, there's a whole thread dedicated for Tamiya chassis lipo compatibility in the all things electric section.

There are also some threads of brushless/lipo equipped Mad Bulls in the general section along with more helpful advice.

Edit: Since you aim to run your Mad Bull with a brushed motor, please keep in mind that the gearing of the DT-01 chassis is mainly designed for buggy wheels. With larger wheels and rough terrain, inefficient brushed motors will produce a lot of heat, even more when being fed with the slightly higher voltage of a 2s Lipo and stressed from longer runtimes.

540 brushless or larger than 540-sized brushed motors are able to overcome the poor gearing due to having more torque and better efficiency.

[BigSteve]

My mad bull currently has a sports tuned motor would a hpi Saturn 20 turn have a detrimental effect.

Steve.

[XV Pilot]

Typically, the lower the motor's turns, the higher it revs, but the less torque it has.

With a car like the Mad Bull, with big tyres and limited gearing, you don't really want to be sacrificing torque.

You could of course put standard-size buggy wheels on it, which would shorten your rollout and allow fitment of a more rev-centric motor.

Personally I think the Mad Bull looks great that way, and I think Tamiya should have released it as a Grasshopper III.

[BigSteve]

Can anyone recommend a 2s lipo that fits the mad bull without any modifications needed.

Steve.

[BigSteve]

Typically, the lower the motor's turns, the higher it revs, but the less torque it has.

With a car like the Mad Bull, with big tyres and limited gearing, you don't really want to be sacrificing torque.

You could of course put standard-size buggy wheels on it, which would shorten your rollout and allow fitment of a more rev-centric motor.

Personally I think the Mad Bull looks great that way, and I think Tamiya should have released it as a Grasshopper III.

That really looks cool are they standard 2WD DT02 wheels that you fitted.

[ChrisRx718]

Can anyone recommend a 2s lipo that fits the mad bull without any modifications needed.

Steve.

The Yuki Brainergy 4000 is great - but you need to import one from Germany. I paid £24 on ebay

[XV Pilot]

That really looks cool are they standard 2WD DT02 wheels that you fitted.

Indeed. The white ones are from a DT-02 Fighter Buggy RX, and the chrome ones are the Carson DT-01/02 set.

[taliesin]

Venom Hardcase 4000mah fit like a charm.

Here: http://www3.towerhobbies.com/cgi-bin/wti0001p?&I=LXYKT6&P=7

[F3ST3R]

Newb Question

Will the front buggy wheels go straight on or do you need spacers?

[GregM]

The buggy front wheels will not go straight on a Mad Bull. They would need spacers, since the stub axles are too long.

Or you can replace the front steering knuckles to stock DT-01/02/03 items.

[F3ST3R]

Thanks for the information.

[speedy_w_beans]

Here's how I put a lipo in my Mad Bull...

http://www.tamiyaclub.com/forum/index.php?showtopic=73351