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Discussion Starter · #1 ·
I have built quite a few 30's cars and there is just something that does not look right when you get them done. The wheels and tires look to be too big for the body on some of the cars.
I have used the 24x7 PCS wheels and tires and the last time I looked they were out of stock. The 15mm PCS wheels with the tall sidewall tires look totally wrong and there is a tendency for the tire to roll in the corners BRM also makes a 24x7 wheel and tire combo and Penelope Pitlane make their vintage wheel and tire combo. With the release of the Carrera Avus cars they have tires that look more to scale. I compared wheel sizes and they were of a similar diameter to the aforementioned wheels but the width was narrower and the overall height was shorter. Ah just what I was looking for, except Carrera will most likely never sell the wheels and tires separate in the US. I talked to a friend of mine who makes Carrera replacement 1/24th scale tires here in the US and he said he would be onboard making replacement narrow GP tires if I came up with a wheel. I was down in the shop today with a new pair of Vintage size wheels from PP and set one up on the lathe to see if they could be modified to fit the much smaller Carrera tyre. After an hour or so of trimming and remeasuring I had a close to finished wheel that will still take the PP wire insert. Here are a couple of comparison photos.

On the left PCS wheel and tire combo; 25.7 mm tall and 6.6mm wide

Second from the left PP wheel cut down with Carrera front tire; 25mm tall 4.90 mm wide

Third from the left PP wheel cut down to take a PCS tire 26.5mm tall 6.6mm wide

On the far right PP wheel and tire combo with the center rib narrowed a bit 26.8mm tall and 7.5mm wide.





Here are my questions.

If I should send the prototype wheel out to be manufactured would you gents be interested in them? The number of units produced will determine which machine shop I will use to produce them.

If I were to have the tires made would you want the fronts and the rears? The rear tires are 27.7mm tall and 5.5mm wide and they would take a different wider wheel with a taller center rib.

If you were going to buy them would you want just fronts or would you like them in sets of four? If you just got fronts than you could use matching PP wheels in the rear. There are quite a few prewar cars that used close to the same size tire on all four positions like the MB SSK, the Aston, the Buggatti's, the early Alfa's and so many others.

What type of tire material would you want; silicone or urethane? My friend does not have the capability to do rubber.

Ken
 

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They look great Ken.

I have just started building a few 30's cars....an Aston Ulster, a type D Auto Union.
Wheels of appropriate size have me resorting to a "make do" approach by narrowing Ninco alloy rims....not the best but adequate for my attempts.

I would be interested in a set of four.
I will watch for developments.

regards
 

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Discussion Starter · #4 ·
It looks like I will be going with the vendor who can make smaller runs, I was in touch with him this morning and will have him make a small batch of 40 of the front wheels.

Ken
 

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Al Schwartz
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I'd be up for a couple of sets as well - the narrow fronts would do well on all four corners of some of the 30's sports cars like the Alfas.

One of the problems of getting the "right" tire on cars (especially GP cars) of that vintage is that the wheel size depended on the event. Remember, those were the days of cotton tire cord - much weaker than today's synthetics - and the tire's rotational speed had to be controlled to avoid shedding the tread or blowing out the carcass thus cars running at Avus would typically mount a larger diameter tire than those fitted for Monte Carlo.

The wheels on this Talbot were turned down from BWA 1/24 wheels:



This is a chassis for an MG TC project - modeled after a very popular 50's style - 16" wheels and 6:00 X 16 tires at the rear and the original 5:00 X 19 fitment at the front - at the time I built it, my only option was to make the front wheels from scratch - tires were some vintage Ortmann repops for recessed, not ribbed wheels.



I am still waiting on some purpose-made wheels for this 2900B The ones fitted (PP I think) are too large.



EM
 

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Discussion Starter · #6 ·
QUOTE (Ecurie Martini @ 12 Feb 2012, 12:41) <{POST_SNAPBACK}>I am still waiting on some purpose-made wheels for this 2900B The ones fitted (PP I think) are too large.



EM

Hi EM

It looks like those are the PP wheels with PCS tyres which come out to being 26.5 mm in diameter. These might work since they are only 25 mm in diameter.

Here is a shot of the wheels in comparison to the wheels from three bugatti Kits on the left and Aston Ulster and two different MB SSK's.
The alloy wheel in the middle is the wheel and tire combination that you have on the car now.
These wheels that I am making fit the SSK's very well but are still too big for the Bugatti's and the Aston.


Regards Ken
 

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Peter Seager-Thomas
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Hi Ken.

The (Airfix) Bugatti wheels you show are pretty well spot on for size. A look at most regular auto wheels will show the diameter over the flanges to be between 1.25 and 1.5" over the nominal wheel size, so, measure a 19" wheel over the flanges and it will be about 20.375".

I would guess the Carrera Avus wheels are close to scale, so presumably will be a scale 22" nominal diameter, so rather too big for what you need. The tyres sound interesting, and if a tightish fit might well do for 21" (nominal) scale wheels, as used on many late 20's/early 30's cars.



The picture above shows what should have waited for my next thread, another Airfix Bugatti. The front tyres on this are Scalextric Ferrari 375, a somewhat slippery tyre presumably made for use with a magnet, whilst the rears are copies I had made of this tyre in A30 urethane. Both tyres stretch readily to fit, whereas a harder compound tyre I had made did not.

I looked far and wide for etches and/or wheels to suit 30's cars, but without luck, which is why I did them myself.

My best wishes with your efforts.

Al, I'll be mailing you inthe very near future...

Peter.
 

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HI

This is a great thread and I hope we can keep it going. It would be very nice if we could develop a chart that has some of the wheels as actually used and then what is available .. or close ... for slot use. Of course, if Peter is producing the wheels, then we have something that is spot-on!


allmy very best,

Charles
 

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Discussion Starter · #9 ·
Here is one of the other wheels that I machined to take inserts from Penelope Pitlane. It is a CB design 7x15 hubless insert wheel with the outer part of the wheel cut out to take the wire etching and the backside of the wheel cut to look like a ribbed brake drum and the center rib narrowed to take a Scaley Ferrari 375 tire.
I love Peters wheels that are perfect but I am on a beer budget so I convert my own wheels for the cars that I build to race.



I have also cut down the rib on PP wheels to use narrower Vanwall tires and cut in a brake drum detail like this one.



Regards Ken
 
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