Total lack of innovation or even evolution of chassis design

[btaylor]

[HomeRacingWorld]

Might be right!

It was the design and construction. You could not see your car about a 1/4 of the time...one track had to use mirrors. I just was not that good :)

[philo426]

Definitely a case of too much of a good thing!

[strangebrew]

If you want a "simple" gearbox..........When we were kids in the early sixties we built 'em for inline cars.
I have no pictures, nor am I going to build one for my 11' track, but see if you can follow.
Thread the motor shaft & the pinion gear as well.
Spin the pinion grear onto the motor shaft & cap the motor shaft end with a dab of solder or something.
Now the pinion will travel the length of the motor shaft on the threads.
Simply install the motor in the chassis & note the end of the pinion travel in each direction.
Use 2 different size crown gears (one on each side of the pinion...right & left if you will) that correspond with the pinion travel.
Run the car with your controller in one hand & the other on the polarty switch at the driver station.
To change gears simply flip the polarity while under power & the pinion will run out to the end of it's travel in the opposite direction & engage the opposite side crown gear. SInce the crown gears oppose each other & the motor is running the opposite direction, the car continues in it's present direction with a gear change.
You could add a polarity switch to your controller to make it handier to "shift gears". Kinda' like power shifting the 1 x 1's on the strip.
One of the guys built a small transmission using 2 different sized pinion gears on 2 threaded shafts inside a brass case filled with 3 in 1 oil
& attached it to the rear of the motor.
It's most likely "fun" to build, but the only possible use I could see would be on a drag strip.
If you want suspension....I've built some using universal speedometer cable for the rear axle (I have a thread on here somewhere)
but it's more trouble than it's worth. Just get softer tires for more wheel travel.
JUST MY 2 CENTS

[dr fabio]

Yep, what people call non mag racing on plastic is a little mis-named. Hence large open can anglewinders with 0.0001 ground clearance from slotit and NSR to suit European racing. That's mag racing without traction magnets. I experienced this effect in a proxy race. I foolishly ran a small closed can motor in a "non mag" proxy. On true wooden tracks with copper braid it usually ran in the top 5 or 6 but when we raced on plastic I was usually mid field at best but usually in the bottom 1/3. The non mag proxy race stipulated a max mag effect of 30g as long as you didn't run traction magnets!! In a car that weighs say 90g that equated to a 30% increase in traction!! Serves me right for not reading the rules carefully.

[noddaz]

Don't forget, Parma has a belt drive for one of their chassis. I am sure the parts are more expensive than their gear driven brethren. But you must pay the price of technology...

Scott

[HomeRacingWorld]

Whisperjets? O rings are pretty cheap :)



Wow, it's been a LOOOONG time since I raced one of those.

[noddaz]

I was thinking more like this...

Evidently, that is a Pro Track thing, not Parma...
But same general idea... :lol:

Scott

[HomeRacingWorld]

Yep those too. They were good for rentals. :)

[btaylor]

That looks like a tire truer just waiting to happen!
Bob