15 replies to this topic

[Samiam]

Vintage Brass 1/24 Slot Car Custom Build Chassis Project
 
The ''guide'' area makes me think it's a very early rail car. Motor box area looks like it fits some sort of Pittman.

 

 

 

 

 

 

 

[Alan Draht]

Incredible and marvelous in both its conception and execution. The scratchbuilder's extensive use of nails cracks me up.
 
This chassis has got to be a rare find for antique slot car collectors and aficionados.
 
Paging Don Siegel...

[Randy Tragni]

Articulated F1/Indy car. It appears to have a mid-engine layout with a cockpit. You might move this to "historic" section as I seem to remember a NorCal guy in the '70s that made stuff like this. Highly sought after.

[Samiam]

Someone bought it up already.

SOLD.

[Mark Mattei]

Hi Sam,

 

Thanks for the heads-up on this. I made an offer and he took it.

[Alan Draht]

Hey Mark, 

 

I was thinking about you when I spotted Samiam's post of this gem earlier today. You are the perfect person to acquire this. Congratulations!

[edscars]

Quite a creative design. I'd guess that the wheels look like something produced somewhat later than the rest of the chassis, but maybe not.

[Samiam]

Thanks for the heads-up on this. I made an offer and he took it.

 

You're welcome.

 

Keep an eye on his items. He said he has more from the same collection. I asked if he knew any history on it but he said no.

[n.elmholt]

Quite a creative design. I'd guess that the wheels look like something produced somewhat later than the rest of the chassis, but maybe not.

 

Wheel inserts looks like Slot.It or similar.

Niels, DK

[Dave Crevie]

Thanks for the heads-up on this. I made an offer and he took it.

 

The right home for it. 

[Ramcatlarry]

A dual-motor roller is on now.

[Mark Mattei]

Thanks, Larry. I got it.

[Cheater]

Picture or a link please?

[Dave Crevie]

Mark,

 

As always, I get such a kick out of seeing cars from your collection. What a trip back in time they are! Can't wait to see these.

 

As soon as I can regain my driving abilities, I'll start hanging out at Mike's again. Maybe we can hook up then.

[Eddie Fleming]

Let me start by saying the first chassis is fantastic and I am in awe of it and its creator. 

 

But, and you knew there was a but coming, looking at the fifth photo down I have questions about the geometry of the rear suspension. The longer arms on the top look to me like they would create camber problems as the suspension moved. This would be more of a question for full-size cars rather than this one.

 

So, you engineer types out there is the suspension layout good or not? in particular as related to full-sized cars.

[Dave Crevie]

Knowing the history of working suspensions on slot cars, I don't think that small camber change is going to make a difference. Keeping in mind that the rear suspension still uses a solid axle, it probably is going to act more like a DeDion system than a fully articulated one. I'll wait until I see the chassis before I make any other comments.

 

Ideally, you want an un-equal length, non-parallel control arm set-up. The upper control arms should be shorter than the lower. And the pivots for the upper and lower control arms should be closer than they are at the uprights.  

 

I guess it's time for another one of my Mickey Mouse drawings.

 

 

So, as the car goes through a corner, the body/chassis rolls towards that direction. In the lower drawing above, we are looking at the rear of the car, and it is going through a right hand corner. This causes the left suspension to rise. The suspension geometry increases the negative camber of the wheel/tire, as shown by the dotted blue line. And that helps to keep the tread of the tire flat on the pavement. 

 

(Yes, I could have clipped something from the internet, but they all seemed too wordy and hard to follow.)