Front Weight - Two Scales

[1984chevy]

I read that removing too much wood and adding all tungsten at 3/4 to 1" in front of rear wheels will make front too light and cause wobble.  What is too light in the front?  How do you measure, two scales?  I'm from the stock car world, we used 4 scales.  Hard to do with a small car.

Thanks 

[MaxV]

Generally, you use a balance stand such as this one:


www.maximum-velocity.com/specialty_tools.htm#measure

[1984chevy]

Thanks for the reply.

I use a triangular scale rule.

[sporty]

I got 4 small pocket scales. That worked well for us.
Most of the time. I had to make sure surface was flat and level.

Stock wheel base or extended wheel base plays a factor in baLance point.

Rail rider cars. Tuning them and there drift differ . Per individual car build.

But with wheels on. A stock wheel base car or exstended. A safe bet is the front end having atleast 8 grams to 10 grams of total weight with wheels on.

Dont gave to push lightness on front end to have a fast car. 12 grams is just fine too.

[1984chevy]

Link to find the 4 scales you have?

[sporty]

I can get u a ebay link after work. I found them on ebay. Gram scales. About the size of a ipod 4th gen.

[1984chevy]

4 wheel scales is fine tuning for sure. This gets me back to my stock cars days. My son will love playing with the weight and scales.

Thanks for the help.

[sporty]

They still sell the ones I have, I think they work just fine and not a bad price.

www.ebay.com/itm/Digital-Pocket-Jewelry-Scale-GRAM-Calibration-100-200-300-500-x-0-01-NEW-/321554340999?pt=LH_DefaultDomain_0&var=&hash=item4ade21dc87

[1984chevy]

Got some coming. Can't weight to see actual wheel weights. My son loves this stuff. It will be interesting how close we are to 10 g total front weight.

THANK YOU!

[1984chevy]

4 scales make it interesting. I have the three fast cars from last year to work with. Pack winner and sibling winner and mine.
Standard wheelbase with 4 wheels touching (required). I ran all kinds of weight test. Rotated scales, averages etc.

What I found, two cars had the left front touching but no weight! Touch the back to roll it and the tire would turn, that's it. No weight. The third had just 6 grams on one front tire.
Weights:
Average front weight 26 grams
Average rear weight 113 grams


Should I try to balance the weight across the rear? I assume with the left front not touching, it causes the left rear to be heavy. I disagreeumption is, as long as it tracks straight and weight is concentrated 3/4 to 1" in front of rears, weight is pretty good.

Does the left front touching only on occasion, slow the car? I assume yes. Each time that tire touching the track it would skid then spin.


The other area beyond weight distribution is front weight. Wheels and axels are 3.5 each for 7 on the front. I don't want to get wheel wobble with too little in the front. With yours on the 4 scales, what are two front weights, left and front?

Thank you!

[sporty]

My cars are 1/4 thick. And in many spots 1/8th. This is fully exstended wheel base.

Stock wheel base is different weight and set up.

My front end weight on fully exstended wheel base was around 10 to 12 grams.

I tried to set the scales up and car. To just read the rear weight on each wheel. I tried to have it pretty close.
But keep in mind. Shifting weight is not solving the issue. If there is a big difference.
It's usually due to the axle height not being the same. A drilling or if using slots. Issue there.
yes tho it can be the weight is not center.
I like my weight evenly and centered.
Some tho shift there weight and do a triangle weight placement. To more correlate some with the right front rail rider.
I'm no help on the triangulation weight method.
I only tried it a few times.

In all the cars we built. Rarely see the rears be dead on with the numbers. (Scale). But they were pretty close tho.

You would have to post some pictures of the car.

I like a 3/8 balance point for weight for exstended wheel base car.
but stock wheel base . I prefer a 5/8 to 6/8th balance point.

The wood is only 1/4 thick and I'm using 4 oz of weight or close to it.

Now the non touching wheel. Left wheel. As long as you have a clearance of the thickness of two business cards. From bottom of wheel to the surface you should be fine.

But it sounds like yours is touching a bit..