Tyre Testing

Ultimate Slot Car

Tyre Testing.

The Test Skid Pan –  The Test Chassis

             

The track is painted with household emulsion, with copper tape for contact. No Magnet force here

The chassis is NSR 997 Rally. Standard, new and nothing add, no ‘E’ number here.

The plan: I wanted to keep as much consistency as possible, therefore, the track and chassis are the constant.

The only thing to change will be the tyres, volts will differ according to how much volts it takes for the chassis to start to drift.

The tyres I plan to use in this test are:-

WASP. The main reason for doing this test. URETHANE, new kid on the block, one of the best tyres I have used.

PaulG URETHANE. Very large wide stock of tyres, all makes and sizes, A1 guy, quick and easy to deal with, very helpful.

Super tyres, Yellow Dog. Slot Car corner. Nic Hobbies. Two types, Silicon and URETHANE. Silicon the best, but track needs to be very clean. URETHANE. Not as quick as the Silicon, but great tyres. If you’re going to be doing a Proxy race, RAA, Super Tyres seem to be the main tyre of choice.

NSR. The best rubber money can buy. WC slot car maker. Italian. Buy from TS&T or Pendle’s

Slot.it. Again, they make Rubber and Silicon based tyre. Also very good. Italian. Buy from Pendle’s or TS&T

ORTMANN. Made buy Michael Ortmann. Vast range to fit most slots. URETHANE. These used to be the tyre of choice, but something has changed and they are not as good as they used to be, in my opinion.

So, that’s the list of tyres out of the way. Now onto testing.

All tyres had their own wheels. Tyres trued and glued to wheel before testing.

Taking the formula for ‘G-Force as – G = (1.226 x r ) /t2

The Volts column is just there to show how fast the car is going to archive the G #.

The Results.

 

 

These are the results for my skid pan, not yours.
You will come up with different results. All tracks are different.

What I did find. Slot.it ‘P’ tyres, the more laps they do, the hotter they
get. The hotter they get, the sticker they get. and start to grip better.

A tip – if your club uses Slot.it ‘P’, keep them on
their own wheels and keep very warm until race time. Are there ‘heated
blankets’ for slot car
tyres?

When I suggested doing this test, a friend said you
will see a big difference between the makes of tyres. NO, I said. I doubt
there will be much in it. And as you can see, there really is not much
in it between the lowest and highest numbers. CW = a difference of 0.384G
and a time of 0.147s. CCW= 0.331G, & 0.201s.

I love the Slot.it, because it gets sticky (I must
buy some of their other tyres, The ‘C’, ‘F’, ‘P, ‘S’, must do the same
with NSR). Just like touching sticky tape. NSR, very smooth and the longer
they are running,
the
better they perform. WASP & PaulG. I have been using Paul’s on most
of my car for a while now. WASP are new to me. But if I had to choose between
them, I would have to buy both. Super Tyres. If only I had cleaned
the track before I tested these. I may test them again, once I have repainted
the pan. I’m sure I could get a better time. They work well on latex/acrylic
painted wooden track. So I may paint it with that and try again. I feel
bad about the Ortmann’s. They just did not work the way I expected. Even
though they were new, trued of course. But not high on my shopping list
for tyres. Go back to the original formula.

The next time I play with this, I will get a Chassis
and balance it up on standard rubber. That will make a difference.

The Cost.

WASP. Wayne
sells at very competitive prices. £1 per tyre, £2 for a rear set
of two. He will make up tyres for you if he does not have a mold for them.
just send
him the tyres. Best to send in pairs, as this speeds up the process. More
info on Wayne’s site.

PaulG Paul’s
price depends on what tyre you are after. Sells in packs of 4, 2 Pair.
Very extensive range. 1:32, 1:24, Drag, HO, 1:43 etc. Paul is also very
quick to respond to your emails. Paul also sells a kit, for you to make
your own tyres at home, office or down the pub. Well he used to, but I
cannot seem to find it now.

Super tyres, Yellow
Dog.
Vast range of tyres. And if you go to their
site you can order a Wheel and Tyre chart. Lots of info. Price is around the
£3 to £4 mark depending on what you’re looking for. If you live
within the UK, best to deal with Nic
Hobbies
. Very helpful guy.

NSR.
Depending on who you buy from TS&T or Pendle’s
NSR sell in sets of 4, 2 Pair and price depends on what tyre you want.
But TS&T seem to be the cheapest.

Slot.it Same
as above really. Both good guys to deal with – slot.it tyres from TS&T
are all at £5.99, Pendle’s are different for different tyres.

ORTMANN. Vast range and all sell for a different price. But between the £3 & £6. Sold in
sets of 2.

Silicons do not wear, but URETHANE do. Silicons
pick up and can clean a track. USA love them. Over here in the UK, clubs
do not like them. For whatever reason. I have never had a problem.

Tips.

The best tyres by far are silicon, then urethane then
NSR rubber. But again, it’s a hell of a lot to do with track surface.
And what paint, plastic you’re running on. The guys over the pond
seem to favor latex paint, so it stands to reason, silicon will work well
on it. When truing. Use P180 to get the size,
then W&D, 1000, then 1500 and finish with 2000 or higher. You must
wet with water. Then you set them on a flat plate and lower the tyres on
to the polishing papers. Drip water on the tyre as you polish. With the
Slot.it and NSR wheels, I fit to a cut down axle and fit to my DREMEL,
spin that up on its lowest setting. Urethanes will polish in as they run.
Silicone won’t. But then urethanes wear and silicone doesn’t.

A good video to watch.


 

Thanks for reading and Please comment on what you
have just read.


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