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Black looks better. But what do we see when the model is on the track...
Of course you can use the black styrene as well.
The only premise is the hardness/stiffness. Both the white and black sheets as we can buy them anywhere are a bit soft. Compare with the botttom part of a slotcar storage box, it is much harder but also styrene.
We have to get in various stiffeners, esp. longitudinally if we intend to get a well working chassis, esp. for races.

Actually I race in two series which prescribe plastic chassis.
One says "Completely self made from plastic material, EXCL. PCB"
The other one says " Industrially made from plastic material, you can work on it as long as ca. 50 % of the chassis stay original and the origin is identifiable."

I made chassis for both classes, from black styrene.
The CLK chassis is completely made from my first EPAY bought sheet - more or less as an attempt just for fun ( which finally was very successful meanwhile).
The other chassis is based on the Saleen chassis. Motor limitations led me to build sth. for the long NC-2/5 etc motor types. Normally I draw my chassis with CAD - software, but this time I was too lazy to gauge all details and thus took a NINCO anglewinder chassis and surrounded the rear part with a pen to get a usable pattern. The front part is still basic FLY Saleen, the rear completely black styrene sheet. It is sprung by magnets at the sides and by a spring in the center. It runs like a cat - as we say here ...
The rest is to be seen on the pictures I hope.

Roland

The CLK chassis :













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Here the Saleen chassis :

Hi, thank you for your positive words !

But let me lament a bit

The only sad thing ist that these chassis are the result of a ( at least to me) tendency here in Germany that I will never understand :

IN 32ND SCALE ALMOST ANYTHING HAS TO BE RUN STRAIGHT FROM THE BOX !!!

Actually we have TWO known series in our wole country where a few alterations are allowed - see my chassis.
Scratchbuilding in 32nd scale is something for the hobby cellar but not for races. I think scratchbuilders would liked to be burned at the stake if allowed yet...

One of the favourite rules here is " Everything that isn´t allowed explicitely is forbidden."
Imagine if eat least ONE race organizer would write rules strictly after that demand (define ANYTHING THAT IS ALLOWED ) - it would become the most voluminous race rule ever written - to be sent to the racers half a year before to give them enough time to familiarize with it...

The arguments :
-1. equal chances to all
-2. Beginners aren´t frustrated but motivated to stay and continue the hobby ( especiallay when they see the models of experienced builders run out of the box and ask themselves why they can´t keep up with them although all models are straight from the box... )

I have never before heard a more useless argument.

"Equal chances straight from the box" : To get the optimum model or the maximum performance I will not only buy the model itself, I will buy a pile of motors to select the best one, a pile of rear axles to slect the straightest one and so on.
Simply because I´m not allowed to improve an existing model ( apart from the implicitness of fixing bearings and motors and trueing tires whereas changing a gear obviously is a crime because it seems lots of slotracers aren´t able to do this ...)
Means : the more money you are able or willing to waste, the more equal you are...
There are more than 80 ( eighty !!!) different motors for those carpet race models on the market and almost each race series demands its own selection of motors. So it may happen you have to buy eight different motors to test from for only two race series ( if you want to belong to the "equal" ones...).
No one here spends even one thought to the idea of using and prescribing ONE motor ( system), such as the actual Pro Slot Euro motors. Instead you have to buy a bundle of toy motors which can not be maintained at all ( running in is not all ) and are thrown away if feel getting weak, instead of opening them and replacing the worn out components. And thus saving money because a lot of these carpet toy motors are sold for a price which you could buy a well working 16D for.

This way of thinking goes through the whole 32nd scale race scene.
No metal chassis, not even Parma´s Int32 or the Demons or similar, less than ever selfmade ones from brass/spring steel, not even PCB.

So what- if you want to race - build ( better don´t) as allowed or stay home.

This way my chassis came into being. With lots of fun since I´m a scratchbuilding fanatic, but also a tear in my eyes because of these useless restrictions.

Thank goodness there are exceptions : Two weeks ago I ran a 12h - race whose major dogma was

" Everything that isn´t forbidden is allowed" - Cool, isn´t it ? And it worked ! Lots of creative construction details, no moaning, a really peaceful race without any attempt to justify one´s own deficiency with the others´ works. ( Which very quickly and not seldom are misinterpreted as attempts to cheat ).

As much chassis from brass, piano wire, spring steel sheet etc, flexboard, flexi iso etc I had been building a few years ago yet, as little of them I build today. What would I give for a few guys here who think similar to me to create our own "scene", perhaps encouraging others to follow on the way of pure slotracing...

Enough lament.

Btw - my favourite cement for Polystyrene is TENAX 7R. Highly capillary working, aggressive enough to WELD the parts more than simply cementing them.

Best regards and sorry if my English is a bit stumbling - lack of practise...

Roland
Ah yes - my "authors´ name" is the result of my frustration after none of the names from the pile I wanted to use was allowed.