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Rodney's Oakland Speedway cars and memories - Part 3


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#1 dc-65x

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Posted 23 May 2016 - 12:56 PM

Below is part 3 in the history of Rodney's cars and racing experiences at Oakland Speedway:
 
Around 1969, we started to race stock cars on Oakland Speedway's Orange track with stock 36D motors.  Picture showing four stock cars (two of my Chargers, Robert's Torino, and Mike's Mercury).  The vintage picture on the box lid shows the orange track.  The racing was very close.
 
The car I ran was the conventional angle winder Dodge Charger.  I also built this twin motor Dodge Charger back then.  The twin motor Dodge had too much friction to run well.  It had bushings on all of the running gear instead of ball bearings.  Over time the car was parted out.  I kept the frame and body.  The chassis picture shows what was left of the chassis. 
 
With the talk of Multi Motor Madness, I knew the Dodge would be a good car to restore for the event.  This time, the car would be rebuilt using ball bearings throughout the running gear.  The 36D motors have red wire armatures installed and the magnets were zapped.  The motors are stock.  The overall gear ratio is about 3.8 to 1.  I have not run the car yet.  On the power supply, the twin motor Dodge has a lot of whirling parts.  You could feel the unbalanced motors shake. 
 
prk1.jpg
 
prk3.jpg
 
prk2.jpg
 
charger2.jpg
 
003.JPG
 
charger4.jpg
 
charger1.jpg
 
 
 
 

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#2 Dennis David

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Posted 23 May 2016 - 01:59 PM

Rick, these are great. Thanks for sharing. I never made it to Oakland Speedway. The East Bay was like a foreign country when I was young and living in San Mateo. Raced on the peninsula though.


Dennis David
    
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#3 don.siegel

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Posted 23 May 2016 - 04:45 PM

Amen! Those are great and that twin-36 is a hoot! 

 

Thanks Rick & Rodney. 

Don 



#4 vintageslots

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Posted 23 May 2016 - 05:38 PM

Very, very cool. I love hearing the old stories from the 1960s and seeing all the cars you guys raced back then


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#5 SlotStox#53

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Posted 23 May 2016 - 06:50 PM

Very novel twin motor Dodge :D

Is Rodney going to be running it soon?

#6 dc-65x

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Posted 23 May 2016 - 08:14 PM

Thanks to everyone for your comments and Paul here's Rodney's track test at Eddie's Slot Car World:

 

The twin motor Dodge Charger was 3/4 of a second slower than the anglewinder Dodge Charger on Eddie's road course.  The twin motor Dodge handles well.  The twin motor car makes a unique whirling noise going around the track. The twin motor guide flag is set up to float so the front tires are allowed to have good bite.
 
The twin motor Dodge was originally built with special Russkit can motors.  I found one of the original motors and found the second motor can.  I collected enough parts to rebuild and update the two motors.  The two motors have Rehco ball bearing Russkit cans and have Champion ball bearing end bells.  The motors were originally built with stock magnets and armatures (per the race rules back then).  Arco magnets and French Motor Company rewound and balanced armatures are now used. The second picture shows the updated Russkit can motors installed in the car.
 
r2.jpg
 
r1.jpg
 
Thanks Rodney!

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#7 hiline2

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Posted 24 May 2016 - 06:39 AM

Way to cool ! So what are the silver "plates" filling the gap in the cans / magnets? Also the final gear ratio looks like it is set to 1:1 ? seeing that the big gear between the motors and the pinions are maybe 3:1 ?


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#8 hiline2

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Posted 24 May 2016 - 07:21 AM

1st Allow me to apologize for missing parts 1 & 2 ! 

 

2nd Those are freaking crazy tracks ! Sounds like they should have come with warning signs " If your car cant turn 9 sec laps stay off or fall off !"

 

3rd Why did the DC65 6v arm seem to work so well in the 196b motor, didnt the 196b come as a 6v then too? or did pittman get a clue and  build the 196 then with the DC65 arm ?


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#9 don.siegel

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Posted 24 May 2016 - 07:51 AM

The 196B arm was rated at 8V; seems the 65X arm was faster in any case. Pittman never made a 196 with the 65 arm, but it was a popular conversion - and the same arm was used in various other motor conversions as well. 

 

Don 



#10 dc-65x

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Posted 25 May 2016 - 09:48 AM

Way to cool ! So what are the silver "plates" filling the gap in the cans / magnets? Also the final gear ratio looks like it is set to 1:1 ? seeing that the big gear between the motors and the pinions are maybe 3:1 ?

 

Rodney's reply:

 

r1.jpg

 

Motor pinions are 18 tooth.  Drive shaft spur gear is 42 tooth.
42/18= 2.33
 
Drive shaft pinions are 16 tooth.  Axle crown gears are 25 tooth.
25/16 = 1.56
 
So 2.33 X 1.56 = 3.6
 
3.6 to 1 final gear ratio.
 
The motors have the Arco magnet shims that cover one can hole.
 

Rodney

 

Thanks Rodney! :)


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