RB5 mid
 

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.

http://www.edren.se/johannes/rb5/mid01.jpg
http://www.edren.se/johannes/rb5/mid02.jpg
http://www.edren.se/johannes/rb5/mid03.jpg
http://www.edren.se/johannes/rb5/mid04.jpg
http://www.edren.se/johannes/rb5/mid05.jpg

/Mr. Pink

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!

Some electronics installed...


http://www.edren.se/johannes/rb5/mid06.jpg

/Mr. Pink

conversion
 

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

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.

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.:p
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

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

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

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

http://www.edren.se/johannes/rb5/mid07.jpg

http://www.edren.se/johannes/rb5/mid08.jpg

/Mr.Pink

That looks fantastic, well done ;D

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

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

How did you make the bodyshell with soda bottles?

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.

And a painted body...

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

http://www.edren.se/johannes/rb5/mid09.jpg

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!!

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.

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 ....

hi .. nice work there :D

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

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.