RB5 mid

[Mr. Pink]

Hello!

Here is my converted kyosho rb5 in the making.
I have managed to modify the gearbox with reverse rotation.
Rear shock tower and tower mount is stock.







/Mr. Pink

[Alex H]

Yes, here you are. Cool project. Good luck with it. Sure it will run well. Saw you in action at the Nordics with you Lazer. Congratulations to a A-main spot!

[Mr. Pink]

Some electronics installed...




/Mr. Pink

[migsy]

nice work, looks fab mate. i think you can say your a perfectionist.

[rcracer1]

The 1st version of the x6 had a problem where the torque caused on power created lift in the rear. With your gear box, does on-power cause the front to want to come up (good) or push down?

[Alex H]

Originally Posted by rcracer1

The 1st version of the x6 had a problem where the torque caused on power created lift in the rear. With your gear box, does on-power cause the front to want to come up (good) or push down?

The Rb5 has got a lot of rear grip so maybe it wont be an issue.

[Mr. Pink]

Tested the car today at our local track (green hill) with 100% astroturf.
I do recognize the rear rb5 suspension. Still alot of grip.
It behaves much like normal buggy. On power gives alot of rear traction.
I think the weight distrubution is much like stock rb5 but now the yaw-moment of inertia with the mid-setup is lower and the car changes direction like a mid-buggy should.
It is very easy to drive and handles bumps much better than expected.
I am very keen to test the car on a low-grip track as soon as possible.

/Mr. Pink

[Thomas P]

I agree the car was ace to see IRL!! it will be the future @ our track

[Mr. Pink]

Attempted to make a body + undertray today out of soda bottles.

The result is not top notch but it will do as a prototype.





/Mr.Pink

[kek23k]

That looks fantastic, well done ;D

[super__dan]

Is the wheelbase as original? Just looks long to me?

[Mr. Pink]

No the wheelbase is ~1cm longer than original.
I hope the combination of low inertia and longer wheelbase will give a stable but quick car.

Edit: Put the car on the scales and mesured a total weight of 1520g.
The distrubution is 63% rear and 37% front.

/Mr. Pink

[telboy]

How did you make the bodyshell with soda bottles?

[Mr. Pink]

I am using the same method as one of my racing buddys.
http://rc10b4.blogspot.com/2008/11/h...en-kaross.html

Simply a mold out of wood and the bottle acts exactly as a shrink-wrap when heated with a hot air gun.

[Mr. Pink]

And a painted body...

Maybe the color is not to everyones liking but I like cars that stand out.

[Tom3012]

Stupid question but, what size and brand of bottle did you use, im struggling to get one big enough for my custom car. Yours looks great btw!!

[Mr. Pink]

I am using 1,5l coca cola bottles.
But before cutting the bottle apart to wrap around the mold I drill a small hole in the cap and pump up a pressure with a bicycle pump. (around 2 bar) Then I carfully go over the bottom end with the heat gun to smoothen out the bottom end. This gives me a little more plastic to work with.

[mrspeedy]

It wouldn't be very expensive to have a decent shell made form polycarbonate if you where to make the mould yourself .. ....

Nice job on the car BTW ....

[caneye]

hi .. nice work there

what did u have to do to achieve the reverse gear rotation?

[Alex H]

Its not reversed at all. The motor is positioned the same as usual. Same rotation as normal. Just on the other side of the gear box.