Mike,
Just how much of the shaft was left to attach those rims to?? Hard to tell from the pic but doesn't look like much...
Enough to engage the set-screw and run smooth. overall wirth in the back is 3.095".
I'm not sure if the shaft is longer on the "real" DD motor, the JKH-DD.
Regardless, for 1/32", it's plenty wide enough.
Also, what kind of tires are those, 87002??
A bigger dia. version. Probably started at about .790".
Thank...
New JK Direct Drive chassis concept discussion
Started by
HarV Wallbanger III
, Aug 04 2013 01:31 AM
112 replies to this topic
#51
MSwiss
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Posted 06 August 2013 - 02:19 PM
Mike Swiss
Inventor of the Low CG guide flag 4/20/18
IRRA® Components Committee Chairman
Five-time USRA National Champion (two G7, one G27, two G7 Senior)
Two-time G7 World Champion (1988, 1990), eight G7 main appearances
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Note: Send all USPS packages and mail to: 692 Citadel Drive, Westmont, Illinois 60559
#52
MSwiss
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Posted 08 August 2013 - 07:59 PM
I got a few RTR's in today along with some motors.
IMO, Jerry really hit a home run.
They ran great. Much more brakes than my Hawk 25 powered prototype.
They also ran amazingly cool for something with no gear advantage.
I had zero problem getting around by toughest lane on the flat track, Black.
The shaft is long enough for over a 3.500" rear width with .800" wide tires.
Lots of turns of small wire.
The car zipping around Blue lane.
After running 2 minutes plus , straight, and then stopping a short time to start up the camera.
Warning; if you believe the motor doesn't get real hot, skip this video.
You might find the ending disturbing.
Mike Swiss
Inventor of the Low CG guide flag 4/20/18
IRRA® Components Committee Chairman
Five-time USRA National Champion (two G7, one G27, two G7 Senior)
Two-time G7 World Champion (1988, 1990), eight G7 main appearances
Eight-time G7 King track single lap world record holder
17B West Ogden Ave., Westmont, IL 60559, (708) 203-8003, mikeswiss86@hotmail.com (also my PayPal address)
Note: Send all USPS packages and mail to: 692 Citadel Drive, Westmont, Illinois 60559
#53
Samiam
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Posted 08 August 2013 - 08:25 PM
Mike,
I like my slot cars,but that is just pure LOVE! 
Sam Levitch
"If you have integrity, nothing else matters, and if you do not have integrity, nothing else matters."
Robert Mueller, special counsel (2013)
"... because people have got to know whether or not their president is a crook."
Richard M .Nixon, Nov 17, 1973
"Fool me once, same on... shame on you. Fool me... you can't get fooled again."
George W. Bush
"If you have integrity, nothing else matters, and if you do not have integrity, nothing else matters."
Robert Mueller, special counsel (2013)
"... because people have got to know whether or not their president is a crook."
Richard M .Nixon, Nov 17, 1973
"Fool me once, same on... shame on you. Fool me... you can't get fooled again."
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#54
Dennis David
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Posted 08 August 2013 - 09:55 PM
Dumb question. Can you show the best way to utilize the sleeves? Picture please?
Dennis David
#55
MSwiss
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Posted 08 August 2013 - 10:03 PM
Dennis,
I had just Pm'ed you, but no reason why I can't post it here.
I showed it on the shaft for clarity, vs. stuffed in the wheel.
The top photo shows it hanging off the shaft, just so you can see the notch clearer.
The bottom one shows it on the shaft.
If all you're going to use is 3/32" bore wheels, you probably can just solder the sleeves on the shafts
Mike Swiss
Inventor of the Low CG guide flag 4/20/18
IRRA® Components Committee Chairman
Five-time USRA National Champion (two G7, one G27, two G7 Senior)
Two-time G7 World Champion (1988, 1990), eight G7 main appearances
Eight-time G7 King track single lap world record holder
17B West Ogden Ave., Westmont, IL 60559, (708) 203-8003, mikeswiss86@hotmail.com (also my PayPal address)
Note: Send all USPS packages and mail to: 692 Citadel Drive, Westmont, Illinois 60559
#56
Dennis David
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Posted 08 August 2013 - 10:07 PM
That's what I figured
Dennis David
#57
MSwiss
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Posted 08 August 2013 - 10:19 PM
If you permanently solder the sleeve to the shaft, when installing the first set of tires , I would just very lightly tighten the set-screw.
Take the tires of and spot the set screw mark.
Lightly grind away the brass, on and near that mark, so you are tightening the set-screw on future installations, into steel / a surface below the outer circumference.
Mike Swiss
Inventor of the Low CG guide flag 4/20/18
IRRA® Components Committee Chairman
Five-time USRA National Champion (two G7, one G27, two G7 Senior)
Two-time G7 World Champion (1988, 1990), eight G7 main appearances
Eight-time G7 King track single lap world record holder
17B West Ogden Ave., Westmont, IL 60559, (708) 203-8003, mikeswiss86@hotmail.com (also my PayPal address)
Note: Send all USPS packages and mail to: 692 Citadel Drive, Westmont, Illinois 60559
#58
NSwanberg
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Posted 09 August 2013 - 12:25 AM
That was disturbing. 
Remember the Steube bar! (ask Raisin)
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#59
Dennis David
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Posted 09 August 2013 - 12:28 AM
Mike, that's what I planned. Thanks
Dennis David
#60
HarV Wallbanger III
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Posted 09 August 2013 - 01:38 AM
Mike now we know what you do when alone with your cars..... 
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#61
havlicek
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Posted 09 August 2013 - 06:09 AM
Like I said, cheers to the guys who say "what if?"...and then go ahead and actually do it! Now...what about a Hawk with a 3/32 DB shaft and say 110 turns of #31 wire for kicks!? 
-john
John Havlicek
#62
JohnnySlotcar
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Posted 09 August 2013 - 07:11 AM
Is that an Earwig in the ear canal? Better call KVP! ROFL
John Austin
#63
Dennis David
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Posted 10 August 2013 - 10:26 AM
I need suggestions on how to build a chassis for this motor.
Dennis David
#64
W. J. Dougherty
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Posted 10 August 2013 - 10:32 AM
For future/other applications, maybe Jerry can make replacement arms for his mini can motors like the Hawk 6. Then you might be a better able to run these cars or their 24th scale cousins on bigger/longer tracks...
Yortuk & Georg Festrunk
#65
MSwiss
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Posted 10 August 2013 - 12:32 PM
Bill,
Not a bad idea.
With the bigger brushes, the motors might have more brakes, especially if you put heavy springs on them,
and would be rebuildable.
But one thing at a time.
Mike Swiss
Inventor of the Low CG guide flag 4/20/18
IRRA® Components Committee Chairman
Five-time USRA National Champion (two G7, one G27, two G7 Senior)
Two-time G7 World Champion (1988, 1990), eight G7 main appearances
Eight-time G7 King track single lap world record holder
17B West Ogden Ave., Westmont, IL 60559, (708) 203-8003, mikeswiss86@hotmail.com (also my PayPal address)
Note: Send all USPS packages and mail to: 692 Citadel Drive, Westmont, Illinois 60559
#66
W. J. Dougherty
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Posted 10 August 2013 - 12:42 PM
Will a PS motor fit into the chassis??
Yortuk & Georg Festrunk
#67
MSwiss
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Posted 10 August 2013 - 12:45 PM
Yes, but you would need one that runs CCW.
Mike Swiss
Inventor of the Low CG guide flag 4/20/18
IRRA® Components Committee Chairman
Five-time USRA National Champion (two G7, one G27, two G7 Senior)
Two-time G7 World Champion (1988, 1990), eight G7 main appearances
Eight-time G7 King track single lap world record holder
17B West Ogden Ave., Westmont, IL 60559, (708) 203-8003, mikeswiss86@hotmail.com (also my PayPal address)
Note: Send all USPS packages and mail to: 692 Citadel Drive, Westmont, Illinois 60559
#68
W. J. Dougherty
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Posted 10 August 2013 - 12:50 PM
Very tricky...
Yortuk & Georg Festrunk
#69
Dennis David
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Posted 10 August 2013 - 12:56 PM
What direction does the motor rotate?
Dennis David
#70
MSwiss
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Posted 10 August 2013 - 01:37 PM
see post #54.
CCW looking at it from the can end.
Mike Swiss
Inventor of the Low CG guide flag 4/20/18
IRRA® Components Committee Chairman
Five-time USRA National Champion (two G7, one G27, two G7 Senior)
Two-time G7 World Champion (1988, 1990), eight G7 main appearances
Eight-time G7 King track single lap world record holder
17B West Ogden Ave., Westmont, IL 60559, (708) 203-8003, mikeswiss86@hotmail.com (also my PayPal address)
Note: Send all USPS packages and mail to: 692 Citadel Drive, Westmont, Illinois 60559
#71
MSwiss
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Posted 10 August 2013 - 04:52 PM
I need suggestions on how to build a chassis for this motor.
You could use one of the LH brackets you got from me, turned around, something like this, obviously trimming away
any brass in front of the motor, for clearance.
Or graft on one of the slotted reject brackets I sent you, to your main structure, which would allow you to use different dia. tires,
and still be able to adjust it to whatever clearance you prefer.
Mike Swiss
Inventor of the Low CG guide flag 4/20/18
IRRA® Components Committee Chairman
Five-time USRA National Champion (two G7, one G27, two G7 Senior)
Two-time G7 World Champion (1988, 1990), eight G7 main appearances
Eight-time G7 King track single lap world record holder
17B West Ogden Ave., Westmont, IL 60559, (708) 203-8003, mikeswiss86@hotmail.com (also my PayPal address)
Note: Send all USPS packages and mail to: 692 Citadel Drive, Westmont, Illinois 60559
#72
Dennis David
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Posted 11 August 2013 - 10:10 AM
That will do the trick, thanks. I always keep thinking what gears will I use. This definitely is opening a brave new world.
Dennis David
#73
Dave Crevie
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Posted 24 August 2013 - 02:03 PM
I ran the RTR car on a routed oval last night. The car is incredible. It is smooth quiet and
very quick on a small track. Everyone at our meeting was very impressed.
#74
Dennis David
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Posted 31 August 2013 - 10:08 AM
- Gator Bob and Racer36 like this
Dennis David
#75
Tex
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Posted 31 August 2013 - 10:42 AM
That's a cool car, Dennis!
Richard L. Hofer
Remember, two wrongs don't make a right... but three lefts do! Only you're a block over and a block behind.
Remember, two wrongs don't make a right... but three lefts do! Only you're a block over and a block behind.
