What causes 2 identical B44's to be so different?

[Team No Idea]

I think im going a bit mad..... it could all be in my head.
Ive been racing my B44 indoors at FORCC for about 8-9 months and gradually getting the setup as i like it.
over the last few months it really has felt spot on and im mega happy with it. However the outdoor season has kicked off and i have been very reluctant to disturb the settings each week to go and do the regionals.
So now i have purchased another B44 to use indoors only. It was second hand, a few weeks old and i have completely stripped and re-built every nut and bolt so it is identical to my other car.

However it handles sooooooooo differently to my 1st car, the rear end has a mind of its own and its nowhere near as confidence inspiring.
Could this simply be the various tiny manufacturing tolerences that make a difference? should they be the same? is it normal for 2 cars to be different although setup the same? soooo many questions! lol looks like iv'e got to find a completely different setup to make this work....

Any ideas?

[Mike Hudson]

you sure it's exactly the same? shockpistons, oil brands, limiting, tyre wear? Even a few extra washers or shocks not built quite the same could change the way it feels.

[RcRob]

Originally Posted by Team No Idea

...i have completely stripped and re-built every nut and bolt so it is identical to my other car...

Originally Posted by Mike Hudson

you sure it's exactly the same? shockpistons, oil brands, limiting? Even a few extra washers could change it's driving style

Identical - exactly alike; incapable of being perceived as different.

For further information please see:

http://www.google.co.uk/search?hl=en...identical&meta

[Team No Idea]

Originally Posted by Mike Hudson

you sure it's exactly the same? shockpistons, oil brands, limiting? Even a few extra washers could change it's driving style

lol. yep. its exactly the same, It sounds wierd doesn't it.
The other car is fantastic since you gave me a hand with setup info, but this new one just doesn't work.
Ive even tried swapping the shocks, diffs etc from one to the other.
ive got a spare brand new chassis that im going to try next week.

[Mike Hudson]

sounds strange to me, glad the setup tips helped you running the same electrics too?

[jono83]

Originally Posted by RcRob

Identical - exactly alike; incapable of being perceived as different.

For further information please see:

http://www.google.co.uk/search?hl=en...identical&meta

lmfao i feel a fight brewing

[Team No Idea]

Originally Posted by Mike Hudson

sounds strange to me, glad the setup tips helped you running the same electrics too?

Ooo almost, the servo, motor and lipos are from my old car, however ive switched from a GTB to a LRP Sphere TC spec. Although they are mounted in the car in the same way.

[Lee]

This is an interesting conundrum....

You say that they are identical but handle differently, my conclusion is that they are not identical otherwise they would handle the same.

[Mike Hudson]

That could be where the problem lies then, if your running different speed servos or different weight lipos in the back or the speedo's are different, all those little bits could make a big difference int he way the car handles

[Medders]

Is it possible to get two cars truely identical

What about diff and slipper tension etc. They can be made almost the same but not exactly. Same with weight distribution - are the electrics the same and in exactly the same place?

Is the rear wind the same size / shape?

[Team No Idea]

Originally Posted by Lee

This is an interesting conundrum....

You say that they are identical but handle differently, my conclusion is that they are not identical otherwise they would handle the same.

Absolutley, obviously my wording is a bit dodgy!, Sorry, the word Identical was the wrong one. I should have said they are as near to each other as i can physically get them.
It may simply be that one is more "worn" than the other?

[Team No Idea]

Originally Posted by Mike Hudson

That could be where the problem lies then, if your running different speed servos or different weight lipos in the back or the speedo's are different, all those little bits could make a big difference int he way the car handles

ahh, ok. I'll give that a go, ill go back to the GTB and see how it goes. i'll try anything! lol

[Team No Idea]

Originally Posted by Team No Idea

ahh, ok. I'll give that a go, ill go back to the GTB and see how it goes. i'll try anything! lol

Thanks again!

[MikePimlott]

Originally Posted by Medders

Is it possible to get two cars truely identical

What about diff and slipper tension etc. They can be made almost the same but not exactly. Same with weight distribution - are the electrics the same and in exactly the same place?

This is good info.

I found that diff tightness front and rear changes alot of the way this car handles.

[Lee]

The speedo will make no difference unless it is set up wrong.

It is probably more down to diffs, shock rebound etc.

I also know top drivers who would pick an old car over a new car every time

[Southwell]

Chassis tweak possibly, it can make a big difference.

[markwilliamson2001]

Agreed, with carbon fibre chassis, very easy to get a tweak. Try loosening the chassis screws, and pushing down on a flat surface, then retighten, nip-tight, all the screws.

HTH
Mark

[B44&501xRacerEX]

Originally Posted by Team No Idea

I think im going a bit mad.....
However it handles sooooooooo differently to my 1st car, the rear end has a mind of its own and its nowhere near as confidence inspiring.
Could this simply be the various tiny manufacturing tolerences that make a difference? should they be the same? is it normal for 2 cars to be different although setup the same? soooo many questions! lol looks like iv'e got to find a completely different setup to make this work....

Any ideas?

No your not going mad. A guy at my local track has 2 B44's also, and has
one setup for one dusty outdoor track and the other is setup for indoors.
He currently runs dirt oval with me and have not seen him run the outdoor car yet.
He prefers his indoor car over the other one, says the outdoor car is too sensitive.
No R/C car is the same even if they come from the same factory.
That's why im scared to sell my B44, because if I buy another one it wont
drive the same.

[Gayo]

[B44&501xRacerEX]

Originally Posted by Gayo

It's all good
lol