Dt01 make shift madbull

[lentner3 328]

Ok so I have a couple of fighter buggy rx's kicking around collecting dust and also some spare lunchbox wheels so I thought I would try to make a mad bull type vehicle but have a couple of problems. I have a spare set of front lunchbox uprights so the front wheels were straight forward.

The rear however are not so simple. The fittings are 12mm hex but not fitted with a pin, they are fitted with grooves if thats the right term. I'm sure you know what I'm talking about. So is there any way to fit these wheels without drilling the real axel? I have dismantled the gearbox and tried to fit rear hornet axels bit they don't fit and are way too short. I even tried to swap the internals out but couldn't see any obvious way to make it work. How is it done on the standard madbull? Had anyone trie this before? Maybe there is a way to swap the whole gearbox for a hornet one? At the moment there is a weird pivot point where the 3rd shock mod goes which makes fitting the hornet box on. Any Ideas

[dyahipfakta 50]

They have splined hexes and rear axels. It should be the same for the fighter buggy though. If you ebay madbull hex it should bring them up. I love my mad bull.

[dyahipfakta 50]

Lunchbox wheels won't really work I don't think better off gettin a couple of rear wheels and replacing the tyres.

[lentner3 328]

Just read through the mad bull manual and yes the wheels are 12mm hex like the fighter buggy not quite the same as the lunchbox wheels. I'll be on the lookout for some bigger wheels that are 12mm hex so should be a straight swap. Do you think I can get away with keeping the pinion the same?

[XV Pilot 1936]

The kit Mad Bull uses yellow versions of the wheels used on the Wild Willy II and other WR02 models, while the XB version uses standard chrome WWII ones. Fitting the smaller pinion is a good idea, as the bigger wheels alter the rollout significantly.

[lentner3 328]

I think it will work out cheaper to buy a used madbull project and restore it. that way it ads another vehicle to the collection too 😜. The madbull seems so versatile especially on many different surfaces. Has anyone tried to mod one? Improve one at all?

[lentner3 328]

I think it will work out cheaper to buy a used madbull project and restore it. that way it ads another vehicle to the collection too 😜. The madbull seems so versatile especially on many different surfaces. Has anyone tried to mod one? Improve one at all?

[Percymon 2185]

Has anyone tried to mod one? Improve one at all?

couple of threads here..

http://www.tamiyaclub.com/forum/index.php?showtopic=68357&hl=madbull

http://www.tamiyaclub.com/forum/index.php?showtopic=68383&hl=madbull#entry501011

[Zac_F83 117]

Traxxas Stampede 2WD 2.2" wheels would work..

[dyahipfakta 50]

Any rear hex 2.2s will I have hpi rush wheels on mine.

[GregM 1109]

The Mad Bull's front wheels are sitting on 1150 bearings, just like the Wild Willy II and many of Tamiya's 2WD buggy.

Is this the same situation as on the Traxxas Stampede and HPI Rush? Or are these vehicles using hexes on rear and front?

[speedy_w_beans 4277]

You can also use HPI SS wheels, numbers 2100 and 2135. These wheels come with bearing adapters and drive adapters for almost any model.

HPI makes these wheels in white, black, chrome, and gold.

[lentner3 328]

Cheers both links were a good read. my fighter rx already has cva's on the rear and bearings on the rear so may stick with it and try to find some wheels. I might try a tie rod on the steering assembly and see how I go too. Now just need wheels with inserts some front shocks and an adjustable motor mount. Why is it you have every possible spare you can think off but when you start a project you never have what you need?

Anyone know where I can get some 3mm threaded rod from as I need some for a few different projects and not sure where to look.

[GregM 1109]

Good to see another Mad Bull project starting. Have a look at your local hardware store or Ebay for 3mm threaded stainless steel rods.

[dyahipfakta 50]

Hpi rush uses different bearings on front but the uprights fit your just need to make new steering arms.