B Max 2 MR / 4 Shorty Hybrid
 

Hi guys,

I want to show a first photo of my cross-breeding attempt of a B Max 2 MR with a B Max 4 shorty kit. It has an asymmetric carbon chassis with aluminium sides.
I am curious how it goes... Hopefully as well as all these Team C carpet munchers here.
More photos tomorrow, I have no idea how I could upload more than 1 image from my ipad...
Cheers
Frank

looks great. does regular 2wd body fit?

yes - I really like the original B Max 2 body. Just have to cut out a tiny bit at the right rear of the body.

That looks brilliant.

Seems like there are several versions of these buggies being created.

-AE/Cobra
-AE/Xfactory
-Team C
Etc.

Can't wait to see how it performs!



MOmo

Is the chassis carbon? Hows the flex?

What are the side pods made from?

Have you put the rear of the car on balance scales?
I know the shorty 4wd with the motor on one side and battery on the other is perfectly balanced Left <> Right. Adding esc behind motor may put the weight heavier on the motor/esc side.

Nice work

Another version here

http://www.rudebits.co.uk/product_in...roducts_id=446

:)

The chassis is made from 2,5 mm carbon, the side pods are CNC machined from 7075 aluminium.

Total weight is 1616 g (including body).
Weight distribution - see diagram.
Pretty close to a perfectly balanced car left/right.

During the build I came across the following problem:

I bought a B Max 4 III lightweight kit and assembled the rear end as per instructions. The right universal drive shaft seems to overlap less with the diff outdrive than the left side. When I unmount the shocks, the right drive shaft will fall out of the diff outdrive, the left will just stay in.
My solution was to shim the driveshaft a little further to the center, i.e. put shims at the inside of the rear hub. Did anyone experience the same? Is this a common issue?

Thanks.

I did look at the rudebits conversion, but wanted to go the shorty way with the motor aside.

Some more images. Please excuse the crap quality... Better ones to come once it is finished.

So for my Edification.....

(We recently adapted to carpet here- mainly Ozite and a small amount of commercial grade industrial carpet over the jumps etc)

Are these Fwd motor cars MORE geared for ASTRO/TURF type tracks?

If a track is JUST carpet, and not just patches- (jumps, landings etc) is a MM car more favorable or how would one best utilize the fwd motor/Hybrid car as depicted in this thread?

Being across the pond, we are still in the learning stage and development for setups, though it seems many have caught on quickly. Im just curious if building a car like this would be an advantage on a track that is high traction Ozite where we tend to use slicks and sauce vs a track that is more turf based OR has mixed conditions, like hardwood/cork and carpet combined.



MOmo

update time...
more photos tomorrow.

If the grip is very high a fwd motor car will be surely faster. They change direction quicker and can carry higher corner speed speed due to the weight distribution.

Some more photos of the latest evolution.
Chassis in 2.5mm 7075 aluminium, sideplates printed in Carbon SLS.
With all components thrown together on a scale I ended up at 1495 g with an unpainted body.

That looks amazing, I'd be interested in a conversion kit if it ever becomes available.

Awesome work. looks great. Cost?

Thanks Neal,

costs are far over the top unfortunately, I will look at a small set like 10 pieces and try to get "competitive" quotes.

Looks great! Is it a possibility to design a version with the front from a YZ2?

YZ2
 

That's what I was thinking .

can you make me one of these dude
?

You are the next team extreme .

Actually anything is possible. I just do not own a YZ-2 and as far as I understood, the chassis of the YZ-2 is a one piece aluminium design. No plastic piece available to easily attach to the new chassis plate...

I converted my front wishbones and steering blocks to the YZ-s parts. This weekend is the first race with the car, I will report how it handles...

Your right about the YZ2 front kick up has been done on the aluminium chassis so no plastic front section. The work you have done is to a fantastic standard although I agree with the others if you could some how have the new YZ2 front end on it you could potentially have one hell of a car

There is some news I want to share.
The car handles great, the YZ-2 front parts generate so much steering... And acceleration is unbelievable with just 1550 grams race-ready.

After a few heats I was involved in a crash that destroyed the only YZ-2 arm I had and I had to convert the front back to the B Max 2 steering. The YZ-2 front is so much better though...

And I love the overall balance, PLUS just undoing 4 screws to take the diff out... Easy oil change in 3 minutes...

I now decided to do a YZ-2 front and B Max 4 rear version. Might take some time, but I'll start working on it. A one-piece aluminium chassis is the plan. No idea where we will end up cost-wise, it would be nice to get a few of these kits on the carpet...

And please ignore the direction of the front wheels in the image below. I know.

YZ2MAX4
 

Finally...
Prototype to be on carpet next month.

It should be quite cheap to get a BMAX 4 rear unit soon when all the Yoke folks do the switch to the YZ4...:D

Looks good mate, keep us posted on your progress

*LIKE*

Looks promising for sure.



MOmo

I'm in

YZ2 MAX4 III
 

Next step towards the ultimate 2WD.
Diff rebuild between 2 heats? No problem at all. :thumbsup:

Wow chassis look the absolute business

Wow! Looks great!

You got a price yet bud

Looks awesome, will they be available and how much?

I am currently trying to get a price for a small run of 10 or 20 sets. The chassis is made from 7075 aluminium, the sidepods are SLS printed in either graphite or carbon. The YZ2 MAX4 will hit carpet this friday for the first time. I am more than curious how she will behave...

Please drop me a PM if you would basically be interested in a chassis so I can get better quotes...

Frank

You have a PM from me mate. Chassis and side pods look the business. I loved my DB2 on Astro and I think this car could be even better!!

Cheers
Chris

PM sent!

YES, interested for sure!

I think this format is redundant, given the limitations with the bmax4iii rear end geometry.

Now what would be interesting would be a yz4 rear with a yz2 front, with the ability to position the motor and battery on the chassis with different belt lengths (a la kf2).

Be great to see your creation then Neal! Me and a buddy at my club keep banging on about something similar using the TRF503 rear, belt drive drive hybrids!

Lee

Might still be able to use bmax 2 front end, as I have the worlds version, that is a single piece chassis no separate plastic part.

Would be interested, just need a cheap bmax 4 to have ago with.

The chassis and layout looks amazing. Would love to try this car!