
Bruce McLaren’s Cooper-Oldsmobile
#76
Posted 02 May 2011 - 11:26 AM
Sounds like an arms race!
Fate
3/6/48-1/1/12
Requiescat in Pace
#77
Posted 02 May 2011 - 04:56 PM

Looking good, Rick and Rodney, I love this thread!
-- Mikey
Mike DiVuolo
C.A.R.S. Vintage Slot Car Club
"Prosecutors will be violated"
#78
Posted 02 May 2011 - 06:59 PM
Sounds like an arms race!
NEVER GIVE IN


Actually, this is all fun for us. We share info and help each other out (mostly Rodney helps me!)
I plan on RAMming it home with my new PitRam XL706-500

Rick Thigpen
Check out Steve Okeefe's great web site at its new home here at Slotblog:
The Independent Scratchbuilder
There's much more to come...
#79
Posted 02 May 2011 - 09:01 PM


#81
Posted 02 May 2011 - 10:39 PM
Will it be RAM-wrestling, or...
We "be battl'n" on the Blue King

Mikey,
You've got the big RAM 722 there....cool


Torn down into its pieces parts:

The armature is only .6 ohms vs. the Pittman 706's 1.3 ohms. I'm also going to use the nicely ground magnet. It's gauss reading is a little stronger than my Pittman magnets.
Here's the donor Pittman 706:

I'm still a little unsure if this will work because the RAM arm is .020" larger in diameter than the Pittman. I think it will work but we'll see.....
Rick Thigpen
Check out Steve Okeefe's great web site at its new home here at Slotblog:
The Independent Scratchbuilder
There's much more to come...
#82
Posted 03 May 2011 - 10:08 AM
#83
Posted 03 May 2011 - 10:10 AM
#84
Posted 03 May 2011 - 12:31 PM

Dave - Looking GOOD!

-- Mikey
Mike DiVuolo
C.A.R.S. Vintage Slot Car Club
"Prosecutors will be violated"
#85
Posted 14 May 2011 - 05:20 PM
Not sure about the different color wires, are they different voltage ratings?
Could be Mikey. Mine are all brown wire, no green. Do you have an OHM meter to check the resistance with?
Nice car Dave. I was hoping to run an XL500 armature in my new Vintage Unlimited Class Pittman 706 (any brand vintage parts, rewinds OK, but must fit inside a 703 - 706 setup). I did a weekends worth of work on it including turning down the OD to fit the Pittman setup, truing the comm, epoxy and balancing.......the whole enchilada:

I even polished the air gap on the pole pieces:

When I buzzed the motor up on the power supply it was an absolute DOG




Hmmmm.....what else will fit in that 706 setup. Rodney keeps pulling hot rewound arms from back in the day out of his "Oakland Speedway Box" (pics of his newest Unlimited class car coming up next).
I have a need for speed. My RAM arm is screwed up, I don't have any period rewinds........hmmm......lookie at this arm:

It's an unbalanced, dual shaft Champion 26D. It's got a bit of CCW timing cranked in and measures .3 ohms. It's short enough to fit but is a little small in OD at .590". The Pittman arm is .620". That's a pretty big air gap

I stuck it in the 706 setup, and turned on the power supply. It INSTANTLY heated up and started to stink


Now THAT'S impressive



The setup is all ball bearing. I'm using VBX bearings (I'm cheap) but I remove the shields and clean all the grease out (clean, finished bearing on the right):

I used RAM 426 brushes (cut to fit the 16D sized comm) and RAM 850 brush spring and plunger:

The finished motor:


That big air gap still worries me. It might be all RPM and no torque. I won't know until it hits the track. It sure sounds good on the power supply though

- McAllister likes this
Rick Thigpen
Check out Steve Okeefe's great web site at its new home here at Slotblog:
The Independent Scratchbuilder
There's much more to come...
#86
Posted 31 May 2011 - 10:02 AM
#87
Posted 31 May 2011 - 12:09 PM
Yes, I had to replace the 3/32" (.0938") bearings for the smaller 26D armature shaft. Back in the day SKF made "hop up" ball bearings for the then current motors. For this application I would use (if I had any vintage SKF ball bearings

A really close modern substitute are 2mm X 5mm (.0787" X .1969") ball bearings. It usually takes a "Duffy" to spot the .010" (the thickness of 3 human hairs) larger diameter modern bearing.
I'm hopeful the big air gap will work. The motor really sounds good on the power supply and it doesn't get hot. Neo's are a banned substance in our friendly little "Pittman Challange"

I'm building the chassis now so I hope to test at Eddie's soon. Rodney has built FOUR cars so he's way ahead of me. I hope to post some pictures of his other cars here soon.....
Rick Thigpen
Check out Steve Okeefe's great web site at its new home here at Slotblog:
The Independent Scratchbuilder
There's much more to come...
#88
Posted 31 May 2011 - 06:22 PM
Remember, two wrongs don't make a right... but three lefts do! Only you're a block over and a block behind.
#89
Posted 31 May 2011 - 08:05 PM
Yup, the little C-clip holds the shield in place. Some C-clips are easier to get out than others. A number 11 Xacto blade works well to get under the end of the clip.

Rick Thigpen
Check out Steve Okeefe's great web site at its new home here at Slotblog:
The Independent Scratchbuilder
There's much more to come...
#90
Posted 04 June 2011 - 09:01 PM



Here's his finished motor:


He's made a 2-rail chassis with the rails attached to tubes soldered to the motor side plates. His motor is removable which is a good feature:



Here's the finished roller and the design drawing. Check out those cast wheels. I've never seen them before. Wonder who made them


The body is a Lancer Mecom Lola painted back in the day by ?????


Next up is building a chassis for my Pittman 706 with a Champion 26D armature posted earlier.
Hmmm………A “Pitt-Champ 726D” perhaps

- McAllister likes this
Rick Thigpen
Check out Steve Okeefe's great web site at its new home here at Slotblog:
The Independent Scratchbuilder
There's much more to come...
#91
Posted 04 June 2011 - 10:13 PM

Remember, two wrongs don't make a right... but three lefts do! Only you're a block over and a block behind.
#92
Posted 05 June 2011 - 08:36 AM

#93
Posted 05 June 2011 - 02:03 PM

Time to build a chassis for my killer (hopefully!) “Pitt-Champ 726D”:

I REALLY like all the pin holes in my "Ricks Jig":

Everything is aligned and held in place for soldering:

The drop arm gets aligned and held in place too:

Here are some close-ups. The simple drop arm:

The motor brackets made from K&S sheet brass:

Brass washers reinforce the drop arm pivot tubes:

In honor of the new X-Man movie, an X-brace to stop twisting:

The finished chassis:


Time to screw the thing together and try in on my little home track........
Rick Thigpen
Check out Steve Okeefe's great web site at its new home here at Slotblog:
The Independent Scratchbuilder
There's much more to come...
#94
Posted 05 June 2011 - 02:17 PM
I love how the painter left the roof clear for the driver to look at the stars...The body is a Lancer Mecom Lola painted back in the day by ?????

#95
Posted 06 June 2011 - 05:54 AM
Have you thought about something like a DynoCan arm in one of these Pittmans? Seems like it would be closer to the original size, non?
Don
#96
Posted 06 June 2011 - 08:23 PM
Dokk, I really like that Lola GT too!
Hi Don,
One of the biggest problems I had finding an arm for a 706 is getting one with a shaft long enough on the back end for a pinion gear. The Dyno arms I had were a no go. Whether other MPC arms would work

After running my 726D on my home track I'm very hopeful it's going to JET at Eddie's. At first it didn't have any brakes but I installed the heaviest of the 3 RAM 850 brush springs and then ZAPPED the grunt out of the setup. I remember it got pretty hot when I was soldering up the frame.
BINGO! We have brakes


Here she is:


She wants to do wheelies with all that punch so I've since added some lead on the drop arm and switched out the braid for REH "Cox" Super Soft.

Rodney and I are sticking with Pre-CanAm Series bodies. The first CanAm race was at St. Jovite, Canada, Sept. 11, 1966. I'll be running this Revell Lotus 30 body:

Onward

- hiline2 likes this
Rick Thigpen
Check out Steve Okeefe's great web site at its new home here at Slotblog:
The Independent Scratchbuilder
There's much more to come...
#97
Posted 22 October 2016 - 08:36 PM
#98
Posted 23 October 2016 - 06:30 AM
Here is my question > what has happened to all these great builds I see here and else where / have they all ended up in museums or as hunks of discard or sitting in boxes or shelves ? I know DC65 has been putting some of his on epay (which I sheepishly bid on for a while) .
Will Phillipe conduct a clandestine operation to recover the Venezuela treasure ?