Just so we are all clear!

[Safer Racer]

I do sometime like that on all my cars. I use smooth blue painters tape with 1 or 2 pieces of putty under it.
I would sure hate those guys having to remove the foil tape and dig into the car.

 

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[Safer Racer]

O ---- Yes !!! You should buy a 200 gram weight and check your scale every time you turn your scale on.
If it does not read 200 grams then re-calibrate the scale. Some scales are different so read your instructions.

 

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[Kinser Racing]

Try not to do that. If everyone did that it would take hours to try to get everyone's car to weight. Do your best to get it right! /images/boards/smilies/thumb.gif

 

[HurriCrane Racing]

I check my cars on multiple scales before I send them in. So far, only once was I overweight.

 

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[Kinser Racing]

Calibration weights are very inexpensive and worth it to have. You'll taken care of regardless.

 

[GravityX]

Err on the side of caution. Send in, get the car weighed and then determine how your scales compare.

 

[B_Regal Racing]

I calibrate my scales frequently so I doubt there is any error there, but I do send my cars in 1 gram underweight (~ 5oz). They can weight as much as 5.04oz.

I have read humidity car add just a bit of weight. I do not know if it is true, but why take chances? I far from racing for the top spot, so the extra gram will have little effect. I've also had a chance to experience what goes on at a race and you just should not put these guys through the extra aggravation of removing weight from a car.

 

[LightninBoy]

I have read humidity car add just a bit of weight. I do not know if it is true, but why take chances?

Oh it is very true.

A few years ago we had a district race on an unseasonably humid day. A Dad from my Pack came up to me in the check in line and said "Watch out! Their scales are weighing heavy. Everybody is scrambling to reduce weight".

So when its our turn, we weigh our "serious" cars and they are exactly the same as always. However, I also had a "just for fun" block car for my 4 year old that just had a simple paint job. That car was at least .3 oz heavier than it was just a few days before and overweight. I had to borrow somebody's drill to take out wood from the bottom. Their scales were fine, what was happening was that the humidity was making the cars heavier.

But why didn't our "serious" cars see any change? Simple - on those cars every square inch of wood was sealed tight with CA.

I know I'm a broken record on the benefits of CA. But its experiences like these that have made me so.

 

[Vitamin K]

So when its our turn, we weigh our "serious" cars and they are exactly the same as always. However, I also had a "just for fun" block car for my 4 year old that just had a simple paint job. That car was at least .3 oz heavier than it was just a few days before and overweight. I had to borrow somebody's drill to take out wood from the bottom. Their scales were fine, what was happening was that the humidity was making the cars heavier.

But why didn't our "serious" cars see any change? Simple - on those cars every square inch of wood was sealed tight with CA.

I'm sure sealing with CA does prevent moisture absorption, but since your "serious" cars have, what, .7oz of wood total, there's also a whole lot less material that's capable of soaking up water to begin with. /images/boards/smilies/wink.gif

I bet you could also pack some of those silica gel packets in with your car, too.

 

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