1:32 World of Outlaws sprint cars

[slothead]

On the 1/32 scale section Chris Walker (chrisguyw) started a thread about applications for the FF050 motor, and showed this chassis he built.



I'd seen this before when he showed it during one of the weekly slot car zoom meetings. This caught my eye since I'm hoping to build a bunch of replica WOO sprint cars for my new oval and had thought of using a slimcan motor for them. I asked Chris to suggest a make of motor and production chassis to consider. When he asked for more info about the application I used the illustrations below to compute 1:32 scale specs. The illustrations are not of the same scale so different correction factors were needed for each of them.



The WOO website said the wheelbase varied slightly but 88" was in the range so I chose that. In 1:32 scale that's 2 3/4". I measured the wheelbase of the car in the illustrations and computed what the other specs would be if the wheelbase was 2 3/4"

Dimension	1:32 inch	1:32 mm
Wheelbase	2.75	70
rear track	2.38	60
front track	2.18	55
height	1.50	38
rear tire D.	1.03	26
rear tire W.	0.59	15
front tire D.	0.75	19
front tire W.	0.35	9

This is where I'm at now. Chris suggested the Scalextric FF050 motor mounted in a Penelope Pitlane adjustable metal chassis. With the huge rear tires (Pro-Track Daytona Stockers) he recommends gear ratios in the 3.5:1 - 4.0:1 range using 6 or 7 tooth pinions.

There's a lot more ahead as this project continues. Comments and suggestions are encouraged.

[Rastas]

Hi slothead ,I have had these two for quite a few years I know it's not exactly the same as you are doing but Pattos place sell the vacform body's in1/32 still , and will take the abuse of circle work!

[slothead]

Thanks for the info. I'm hoping to make the bodies from styrene or glossy thick photo stock with decals printed on the panels before folding.

[Courtney s]

If you go look in Shapeways CG has a 3D sprint car that looks pretty good.

https://www.shapeways.com/product/J8BX85CSB/1-32-sprint-car-slot-car-chassis?optionId=55126972&li=shops

[slothead]

I've looked at the 3D sprint car chassis on Shapeways many times. The price ($33 - $38) is a put off for now since I want to build 12 - 20 cars. But, I'll probably order 1 to try out and see what the total cost is when the running gear and guide are added.

[Mark Thomas]

I back casted a few of these many years ago, they were ok but pretty fragile and punchy at that size. A novelty more than anything. https://www.ebay.com/itm/Zee-Gripper...cAAOSwhZFfndSE

[mattb]

Why not go 1/24 scale. A 1/24 Midget Racer is a nice size car for 1/32 track. Lot of frame options with any of the small can motors. Earlier style car, but a nice size to work with.

[4424ever]

Chris’s suggestion of a scaley I would say is bang on. I took a scaly A1 GP car cut down the chassis and grafted on a brass front end and threw some urethanes on it
Although the wheelbase is not to scale this thing is crazy fun to drive. It’s not quite a rocket ship but close and handles well

[WB2]

Why not go 1/24 scale. A 1/24 Midget Racer is a nice size car for 1/32 track. Lot of frame options with any of the small can motors. Earlier style car, but a nice size to work with.

Why not but update to modern midgets.
Why no one has done resin repops of Action 1/24 midgets is beyond me. A lot of work would have to go into cage and nerf bar building, though.

[4424ever]

Kinda like this?

[slothead]

Thanks for all the input and options. I'm hoping to stay 1:32 scale and create decent replicas of current WOO cars including the wings. I've only been to one WOO race and never followed the series closely but watched a video of a race this spring where the lead changed 4 or 5 times over the last few laps and decided they need to be represented on my new track. Yes, that will mean figuring out the how-to part since the 3D printed CG Slotcars chassis at Shapeways is the only production 1:32 part I've seen so far.

When I look at what NY Modifieds has done creating great looking replicas using folded paper bodies on altered brass chassis (Womp) I'm optimistic I can manage something similar.

[Bill from NH]

A couple southern ME home/club ovals in the Bidderford area once ran a super modified class with the folded paper bodies. I don't know if they have a sprint car class or not, if not, they should. Both tracks have FB pages.

[4424ever]

Love those super mods only attended a couple of races but hands down worth every cent of admission

[slothead]

The 'Supers' are truly incredible race cars. They look like something an automotive cartoonist came up with that someone then decided to build. Basically a motor, driveline, and wheels with a driver along for the ride. They're as loud as they are fast and as scary as they are fun to watch racing. If I was envisioning my oval as an asphalt track I'd definitely be building Supers instead of sprint cars.

[slothead]

Vlad sent me this image of a 3D print object in a PM.



It looks like what's in the illustrations I posted, but I don't know if it's a model or a slot car. By that I mean would it be printed as a whole thing or in pieces to be assembled? How would the running gear be added? What I'm most interested in now is a chassis that meets the specs for a 1:32 sprint car to get powered up and experiment with.

It might be that 3D printing is the way to go, I'm just not up to speed (yet) on what can be done or how. But there are a lot of guys on HRW that are being very productive in the 3D printed world who see how it's adding to our hobby. And, they are eager to help others getting started.

[Vintage 1/24]

The 3D-printed model is cool (and could even be detailed out like concours) but may be fragile when you want to do some actual "bullring" type racing.

Yes, you could absolutely model a 2.75" wheelbase sprint.

Sounds like you probably know what you want.

I suggested going with the heavy-duty small-wheelbase commercial track type stuff, as many who race oval have. These 1/32s are really short 1/24s, but the 3' wheelbase would allow you to build a nicely sized toy that would fall "within the realm" of 1/32.

There were the SCORE guys who did this well, and I remember other builders who have made up cool Sprints and midgets, and made them tough enough so that could actually run small track Saturday-night type events. I was thinking that you might look to them since they are doing it successfully for a while now.

There is an advantage to finding an off-the-shelf solution so other racers can just buy in and start racing according to a spec car.

I think this is what you are looking for:

A 1/32 Sprint car with a cage, not concours, but looks like a great basis for a spec car!

https://www.constellationhobbies.co.nz/collections/westrock-racing-machines/products/westrocksprintcarkitset-132ndscale

[slothead]

I used to check the link you provided frequently in anticipation of the 1:32 kit, then gave up a few weeks ago. The chassis with roll cage is very nice. The cost of the base chassis ($62) is a little prohibitive and for handling purposes I'd prefer a longer rear axle to guide hole length to go with the short-ish 2 3/4" - 3" wheelbase. With running gear added these would be over $100 each even before I start begging you to help with folded body panels with preprinted graphics.

[mattb]

These were built by Steve Dowdle, who checks in here from time to time. The car built on the Womp frame has a 3 inch wheel base, the other car has a 3 3/4 inch wheel base. I don't know what kind of frame the bigger car has. All the roll cage is soldered brass rod.

[Rastas]

love theTorsion bar chassis !

[slothead]

Thanks to Vintage 1/24 and mattb for input. I might end up using a metal chassis but that probably isn't necessary because I'm a solo racer who'll be creating simulated races based on recorded lap times. The new oval is a 1 lane track with 3 slots that spiral so 3 times around are needed to return to the start/finish line. I'll definitely race the cars hard, but don't expect carnage with 1 car on the track at a time.

Here are images of the CNC files for the track created by Brad Bowman. The slot crossovers are in turn 4 on the left.

I'm hoping for realistic scale replicas of WOO cars. I know better than to try to go the cheapest route because I'll regret it later and will end up spending even more in the long run. It would be ideal if I can settle on a setup that costs $50 - $75 per car. Standardized parts and build process are needed to keep the cars very competitive with each other.

[FC47]

Lots of good scoop on options and approaches. And, cool cars. Aside, sort of, my scratch chassis hardbodies and drags..and the guys I race with..agree that it's about low 60's for components for a running roller sans body. Brass and wire in the chassis is about three bucks. Steelies, other jewelry, just depends on where the rabbit hole ends for That build. You can trim corners, but, keep it easy and bits you like or want to see go, that keeps a project moving and worth it.
Those Westrocks are likely NZ or AUD...so 3/4 or so of that would be the cost from up here...
Enjoy the ride.
Glad your thread took me back to 2017 and the NYMods thread,
things took a slide here then,...
I just ordered all the goods for some Supermodifieds this evening, pretty psyched.
Cheers,
Paul

[slothead]

I never thought about the cost of the Westrock chassis being in NZ or AU dollars. If the conversion you stated is correct they would be about $47 USD, not out of the question. I'm likely going with Pro-Track wheel and foam tire sets which are $26 for front and rear at SCC. FF050 motor will be about $8, and maybe another $12 or so for axles, gears, and guide. That would bring the total cost up to $90-$100 per car. Photo paper printed body panels would add work to the project, but not much cost wise.