76 replies to this topic

[havlicek]

John, not if you have a lathe.

 

Thin pieces stacked to make a rotating mass introduces harmonic vibrations.

If a lathe is available, it would be easier to open up some undersized tubing to a "proud" .078" ID.  The "stacked pieces thing" is more of a *potential* issue with an armature than a "geared-down" axle spinning far slower, and even less so with a vintage car where the axle isn't spinning all that fast.  Then too...it's far less likely even still to be any kind of issue with fronts!  Pablo's solution (*arm spacers) is the best practical one!

[Pablo]

Using a solid .078 wire front axle soldered to rail uprights has absolutely nothing to do with "rotating mass".

My axle doesn't rotate and the keepers don't rotate. They do absolutely nothing except keep the wheels in place.

 

Why is this even being discussed here?

[Samiam]

I was waiting for the drift to some sort of food.

[havlicek]

Using a solid .078 wire front axle soldered to rail uprights has absolutely nothing to do with "rotating mass".

My axle doesn't rotate and the keepers don't rotate. They do absolutely nothing except keep the wheels in place.

 

Why is this even being discussed here?

 

True.  I'm just happy whenever I see a slot car with actual front wheels!

[Pablo]

My theory is, the only good wheel on a slot car is one that stays out of the way,

doesn't add any weight, and doesn't influence the car other than a very light outrigger effect

 

I love the Tamiya BB fronts for Thingies. I still thank Maximo for introducing me to them

 

Tilting jaildoor body mounts are hinged via .032 wires. Downstops are .039 wire. Lift is about .025

 

 

With only one pair of main rails connected to the bracket, I needed more redundancy.

I fashioned a set of .039 wires connecting the rails to the rear "U" brace - just in case

 

 

 

Tomorrow, front wheels and a tumble

 

 

[Pablo]

Best way to extract the dummy axle is slice it into short pieces.

That way it doesn't take much heat to remove it.

Then uprights are quick swiped with Soder-Wick®

 

[Pablo]

Front wheel assembly drops right in. Note the .032 rod piece underneath to mimic desired front clearance.

Uprights tacked in a few places; now the O-rings can be removed, soldering finalized, and into the tumbler

 

[Pablo]

As the chassis tumbles, I turn my attention to the body.

Outside washed with Dial liquid soap and paper towel; inside with Dial on 0000 steel wool.

 

Both rear corners are split all the way up, but that's OK.

Gives me an excuse to remove the entire rear end and let that air escape

I'll deal with that later - for now, all I need to do is be aware of it and be careful to mask it

 

[Pablo]

Waterslide vintage decals gifted by Samiam

 

[Pablo]

Out of the tumbler

 

 

 

 

 

 

[Pablo]

Quality control check for ride height:

With the rear elevated .063, Jet Flag sitting in a non-recessed slot, bottoms of front wheels are slightly elevated.

Once on the track, the wheels will barely touch and the front clearance will be about .032 as planned

 

[Pablo]

New, modern Marklin train wires - thin, light, and I trust them enough to do them single.

Classic flag weights usually need a couple 10 thou washers up top to make it clear the roof of the Jet Flag.

When done right, this combo makes for a very precise and wobble-free flag

 

[Pablo]

Exothermic body

 

[Maximo]

So far a work of art.

No doubt.

maXimo

[Pablo]

Thanks Maximo

Body is trimmed and pinned

 

 

 

 

[havlicek]

Just checking-in Pablo, and wowsers...that's one great-looking thingie.  Strike that, that's one great looking car!

[Pablo]

Thanks   I can hardly wait to get the powerplant in there

Possible track test next Saturday....

[mike1972chev]

As always TOP NOTCH work Mr. Pablo.......

[Pablo]

Thanks Mike

 

JK 48P 7T solder-on straight steel pinion installed

 

 

Powerplant installed and wires connected

 

 

Believe it or not, only one thing prevents finishing this car tonight - lack of Rit dye I'll get it tomorrow.

No way can I put a pink part on a fighter jet

[Pablo]

Parma Pink Crown, dyed blue and ready for business

 

 

Car passes the drivetrain test with flying colors.

Wheels spin effortlessly and instantly at the "click" of the power supply. She revs free and sounds happy

 

 

Total weight is 117 grams and balance point is midway between the axles.

Ready for track test this Saturday

 

 

 

[Jairus]

Very pretty car Paul!

[Pablo]

Thanks Jairus

[Dominator]

Another master piece Pablo!

[Noose]

Sweet! Good job!


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[miko]

Very nice and clean build!