56 replies to this topic

[Bryan Warmack]

I found Warmack's dual motor car, maybe he could tell the story!



I think he build more then one dual motor, better ask him because I have a bad memory.


Nesta

I've built several different types after seeing the speed potential on the Buena Park king track displayed by cars built by regulars John Sinz and Ken Dylke. This style of one motor in front of the other works best and was TQ and finished 2nd at the last king track race in September. A bit tricky to drive on the gutter lanes but when it is hooked up it is FAST. Obviously works best on super smooth banked tracks like the BPR Gerding King and definitely an adventure!!!

[dc-65x]

That's a cool car. I never would of thought of that arrangement.

Do you think anyone ever tried it back in the 60's?

Is that an aluminum coupling you machined with set screws to attach the motor shafts together?

Thanks

[Bryan Warmack]

That's a cool car. I never would of thought of that arrangement.

Do you think anyone ever tried it back in the 60's?

Is that an aluminum coupling you machined with set screws to attach the motor shafts together?

Thanks

Rick,
Yes. A very simple aluminum coupling. The tricky part is connecting it to the virtually non existent shaft on the end bell side of the rear motor. I grind a VERY small flat on the shaft, use a 1-72 set screw and loctite it all together and hope it stays straight. The front motor box is mounted with loose tubes which allows a bit of misalignment if everything isn't perfectly straight.

I don't remember any dual motor car ever running competitively in the 60's.

The first one I made was 2 motors in the rear, just like the car you are building. It was very fast, but too tail heavy. The next one was 4 wheel drive with one motor in the front and one in the rear and much better. The latest one, except for being somewhat of an "adventure" to drive on some lanes, runs great but only on the BPR King track.

[dc-65x]

Thanks Bryan .

I got really lucky and scored a pair of very rare prototype RussKIT 28X (experimental) motors:



This is the standard "HEMI" can instead of the production RussKIT 28's fancy lad version with all the little slots instead of a rectangular hole.

What? What do you mean you're not buying it. OK, OK, you're right. I made them up from using the armature and magnets from a '68 Mabuchi...



...a Tradeship HEMI end bell kit...



...the can and hardware from an American Line HEMI motor...



The armatures got the shafts straightened, the comm and comm wires tied, the comm trued and cranked a bit CCW and the whole mess epoxied and static balanced:



So for this fantasy build, these are RussKIT 28X's :



Time to put the roller together....

[Jairus]

Wicked!

[dc-65x]

The roller is finished and ready for the body:





Was heat shrink tube available in the 60's ? The wires were going everywhere so I used it here. I couldn't help myself .





Next some real car pictures for body painting inspiration

[68Caddy]

Rick that is OMG, that's for sure. I could not include you in the tread about Favorite Chassis builder due to the fact you are on different level then any one else.
One of a kind, always read your projects but enough of that, I don't want you to get a big head.


Nesta

[tonyp]

It's a thing of beauty. I love it.. It is for sure going to be way over powered... But fun...

[dc-65x]

.........It is for sure going to be way over powered... But fun...

MORE POWER!

Click here for Tim Allen, MORE POWER!

Thanks Tony and Nesta

Onward to the paint "booth"........

[Stefano Sbravati]

[quote name='dc-65x' timestamp='1290214937' post='296276']

Hi Rick, thsis another real Beauty!
Did the motors need any timing in order to match them?

[Prof. Fate]

Hi

My friend, do solder in the can bushing. Those $%U*()_{} hemi cans love to spin that bushing in the housing.

Fate

[dc-65x]

Hi Stefano,

I was able to crank the commutators a few degrees counterclockwise before I epoxied the windings. Now both motors run fastet in the same direction.

I've got the body mounted and I'm working on the details. Here's the Russkit display card that came with an original body:

[dc-65x]

Hi Rocky,

On the Hemi I built before these two I turned down a "real" bearing and soldered it in place. On these two I'm trying a drop of red Loctite on the stock bearings. When that doesn't work I'll solder in some real bearings .

Russkit supplied their wire wheel inserts with their body kit. I scored a small lot of them but without any knockoffs . Here's my solution, drill and tap the inserts 5-40 and thread a set screw and Cox knockoff into the wheel insert:





The Russkit body in the picture has the body cut out to expose the motor's velocity stacks. I used Mr. Milling Machine to make up a "Lazy Man's" version. A piece of hobby shop .020" sheet plastic gets 12 neat holes drilled:



I found some 3/32" axle spacers (Slick7 ????).....



......and man that was easy :



It should look OK through the little cutouts in the body.

Hey Jairus......I'm going to paint one . That should burn me out on painting for several builds . I hope you're available .

Where's that red paint........

[Jairus]

Crack a beer, play some classic rock (moody blues, stones, led-zep) and just enjoy yourself Rick. You are plenty talented to handle it.


(Nice job on the inserts!)

[Prof. Fate]

Hi

I like it. I never thought of your approach to the velocities in the day. But back then, we had actual cut pieces available. I don't remember WHO made them, but I still have boxes somewhere of those scale detail bits.

A couple years ago, P negotiated with a local when I was in LA for me to acquire a NOS pactra after I waxed nostalgic over the one I did in the day that has been sitting around WAITING. Sadly, still waiting!

Oh, in the day, I used those knock offs as well in the threaded axle days. I think all of mine are ex strombecker. As a kid, I just took an xacto and rotated until they would clear the axles! Of course, it was a massive waste of time in that the car wasn't faster, but the bits often got shed in the race.

I did one version of that Ferrari that did not survive in Yellow with two 26D motors. It was like this, had an aunt in the mall seeing me at a track, walk in and ask why why why, and funded a car. Just wanted to see a yellow ferrari with two motors. I STILL don't know why. Not a success.

Fate

[dc-65x]

Crack a beer, play some classic rock (moody blues, stones, led-zep) and just enjoy yourself.....

I dood it Jairus....to Guns N' Roses and Miller Genuine Draft . Got her all scuffed up and masked off....



.....and blew on some Testors flat red:



It looks OK from arms length, especially if you have really LONG arms . As you look closer you can see the darn shaky paint brush was at it again :







In this fantasy, Mike Morrissey got a test shot of the to be released new style Russkit drivers head, Lotus 40 gas caps and a new prototype interior for inline cars. It's good to be Captain of Team Russkit!



Here are the "veloc-a-ma" stacks and an aluminum rod roll bar:



I sanded off the molded in fluid cap (radiator??) and made up one with a screw and straight pin:



Track testing soon........onward!

[Pablo]

[68Caddy]

Rick that is just great, sure made my sick eyes smile.
Be care full with that Miller, you don't want to get my bad habits?
Looking forward for the next eye candy.


Nesta

[Jairus]

Looks GREAT Rick. Don't know why you keep asking me to paint your cars since you do a beautiful job.

Did you seal the edges of those decals?
I use Future floor wax painted around the edges to keep the darned things from pulling up. Plus it adds a bit of gloss to the otherwise dull finish of the decal.

[Pete L.]

Rick,

Super nice job !

[dc-65x]

Thank you guys, the responses are really appreciated...especially when their positive! Or constructive like:

.........Did you seal the edges of those decals?
I use Future floor wax painted around the edges to keep the darned things from pulling up. Plus it adds a bit of gloss to the otherwise dull finish of the decal.

Thanks Jairus, I'll give it a try

[Tex]

There's something about a shiny red body and 12 shiny velocity stacks.

[dc-65x]

Me too Tex. I love red Ferraris......especially 60's Ferrari race cars .

[iceracer]

that is amazing craftsmanship.

Noob question; how do two or even 4 motors run on a lane?
Do you need a special controller?
How does it not affect the other lanes?

some really cool stuff there.

[dc-65x]

Thanks Terry,

These old motors only draw about .6 amps at 6 volts. I use a modern controller at a battery powered commercial track so there’s no problem with dual motor cars.