55 replies to this topic

[Mark Onofri]

🤣 Billnh ,are you going right to left?

[Bill from NH]

No, I went all over the place & placed them in the order they read best. From left to right are 4-16D, 1-13D, & 1-B-can.

[Slot Car Rod]

Victor was referring to the motor in this car.

 

 

[Mark Onofri]

Now that that's settled...
Are the front wheels hinged?

[Bill from NH]

On which chassis? The one in posts #12 & & #26? Then no, the front axle is held in place with a "double L" on each side.

[Slot Car Rod]

Bill is correct.  Here is a picture from Victor showing the bottom of the RVK car.  Thanks Victor.

 

 

[Mr. M]

The RVK chassis is genious in the innovative movements and other details. A more complete list coming tomorrow.

[Mark Onofri]

Thank you, I would never have guessed that it used brass stripes. Can't wait to build it.

[Mr. M]

There is a lot of subtle sophistication in the details of how this chassis worked. It was really quite advanced for its time. A real credit to the members of this club. Here we go:

1 Lead wire is quad Japanese earpiece wire like 20 ga equivalent
2 The rear axle is in a tube with uprights, pillow blocks, but connected by a tube, somewhat like a modern wing car. No evidence of bearings or oilites
3 The motor is solid to the chassis, no flex leading to hopping. There is multiple bracing motor to chassis.
4 The pans are not floppy, but have cross bracing like a lifter car. There are hinge pivots on the end of the plumber rails.
5 The plumber is spring loaded
6 The pin tubes are raised up for more meat from the body bottom to pin opening
7 The chassis is an iso fulcrum, the hinge is under the rear axle tube. And another in front of the motor. This is along with a drop arm pivot
8 The motor had to be shortened to fit between the tires and gear, as well as the wheel hubs

9 The motor is can drive
10 The arm is a G20 in a non wing body on a tight road course

11 The guide lead is huge compared to the wheelbase


[Mark Onofri]

No matter how hard I squinted, I couldn't see the rear axel bearings either. I'm a little confused about the rear frame rails hinging behind the motor. If they are, then are they just soldered to the pan hinge tube in the front?
If you look really really hard, you can see the flatstock axel/motor bracket.

[Mr. M]

The center of the frame hinges down from the back pivot. Iso-fulcrum.

[Mark Onofri]

Where...
A) plumber hinge. So the frame rails are soldered to the plumber hinge?
B) drop arm hinge
C) front wheel hinge
D) I'm seeing this hinge so I take it that the frame rails hinge here and are soldered in front.

Just started setting up the chassis jig, didn't have time to call Roger for the brass and wire.
Intricate little thing, isn't it? But, you can't get much cooler than this!

 

[Mr. M]

Yes I think this is correct. What you can’t see is how much movement there is with all the hinge interaction.

[Bill from NH]

The location of the 3rd one down from the top looks like a solder joint to me.

[Mark Onofri]

From the top side it's clear that it's the drop arm hinge. But it's difficult from the top to see somethings that are soldered.
The spring action is another story. (Hint hint)

[Bill from NH]

Build it as you want. I see solder connecting the brass pieces there, but nothing that looks to be a hinge pin.

[Slot Car Rod]

More pictures from Victor.  There is like a center pivot for the motor/axle pod.

 

Twist rear axle one way.

 

Twist rear axle other way

 

Full droop.  The MESAC track was fairly rough/bumpy.

[Mark Onofri]

And to think, I thought it would be easier than the one I've waited 50 years to build!

[Martin]

I think we should name this chassis "THE RAT TRAP"   

[Mark Onofri]

Not the "bat trap"?
😁

[dc-65x]

Man oh man, I think that wonderful chassis belongs in the Smithsonian!

 

It really puts the "art" in articulation.

[Mark Onofri]

The video of the chassis movement is amazing. The motor bracket and axel tube rotate left and right independently from the chassis. In a very large arch.
He must have stayed up late many, many nights thinking about it.

[Mr. M]

Mark, Is it possible to post the video?

[Bill from NH]

Man oh man, I think that wonderful chassis belongs in the Smithsonian!

 

It really puts the "art" in articulation.

 

Maybe it belongs in the LASCM.

[Mark Onofri]

Done deal. You might want to consider a disclaimer:
Warning: this video contains graphic chassis movements that may not be suitable for all audiences. Viewers discretion is advised