[dreinecke]

I just picked up several of the SCX rally cars today. They are a ball without the magnets, but my Subaru has a very bouncy front end upon rapid deceleration. It will actually hop badly and deslot. I've added weight, trued the wheels and tires all around.

Thanks in advance!

 

[CoolScientist]

I own a couple of SCX rally cars, and both went really well when new - A few mods as youve described should sort out most cars, but it sounds like you have a mechanical, rather than as setup fault.

Could be a couple of things....

1) front axle bent.. was my first thought..
2) trued the front tyres or the rear tyres too much and made them smaller.
Front tyres to small... rears driving hard down the straight, apply brakes, front axle makes contact with the track surface, gianing grip, and as they are smaller, they have a difrent rotatoinal speed to the rear. They are trying to gain grip... (ok the brakes are applied but they dont stop instantly, they still rotate for a while - 6 inches is enough)....

Either ensure that the front and rear tyre diameters are pretty much the same, or glaze the fronts.

Slight dissadvantage is you loose the pull on acceleration of 4 wheel drive.

Hope that helps

CoolS

 

[LMP]

Hi there

I would gule the motor in. Otherwise it'll bounce like heck. I'd glue the bearings on the axels too. Not mega amounts, just enough to stop them moving.

You may need to file the guide aswell. As the car slows, wieght is transfered forward so the front goes down. if the guide is cathing the front crrown that'll cause it to bounce. As will the guide compressing so far in it comes out of the slot all together.

 

[Wankel Ickx]

Hmmmm, SCX Subarus. Not their strongest model I'm afraid to say. They seem to have had a bit of an off day when doing the wheels.

Currently I possess four SCX Subarus and I don't like Subarus. Why did I buy four of 'em? In order to try and find two sets of decently centred hubs.

Pluck your Scooby up and take a good look-see at the way the wheels turn, chances are that one of 'em will describe a weird locus - that's wobbly wheels to you - and that will be your problemo.

 

[phoeno30]

Hi Dave,

If you have glued your motor in and done the usual tyre sanding all you need to do is loosen the screws upto 1 full turn from being tight.

I had the same problem with my Lancer yesterday and it was an easy fix.

I have 2 WRX's and the newer one, released late last year is the smoothest, quietest car I have. (12 SCX rally cars all up)

Let us know how you go !

Martin

 

[Mampara]

I don't have the Subaru but the 206. The nose also bounced like crazy when I braked. I managed to stop it by painting the front tyres with nail polish. It goes like a rocket now.

 

[dreinecke]

Thanks for all of the suggestions. I've swapped the front axle and it still did it....so I took off the tires, no problems. Looks like out of round wheels. I'll also glue the motor, as I've noticed the front shaft likes to climb, moving the motor.

I'll let you know how it works!

 

[tibius181]

HEY WANKEL!! How bout giving me the subarus that you don't need eh?

Doug