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Alternative IRRAź motor submissions


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#1 Steve Deiters

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Posted 25 January 2018 - 05:40 PM

NSR EVO Motor-1.25.18.jpg
 
Too bad looking for a viable alternative doesn't include this potential candidate. Another Ohio racer and I bought a couple and ran some tests on it and related motors. 
 
All I can say is it was very impressive. Fast with tons of brakes. A purpose-built motor for slot racing be used in a commercial series setting who would have thought it.
 
NSR 3030 King Evo balanced motor
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#2 Cap Henry

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Posted 25 January 2018 - 05:43 PM

How long is it? A big thing for any motor at this point is fitting into current cars.
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#3 MSwiss

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Posted 25 January 2018 - 05:48 PM

Too big.


Mike Swiss
 
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#4 Tom Thumb Hobbies

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Posted 25 January 2018 - 05:51 PM

Steve,

I believe it is too long to be used with the angled brackets.

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#5 Steve Deiters

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Posted 25 January 2018 - 06:03 PM

It is longer than the motors we are familiar with. Just making an out of the box observation, not a suggestion, but then in slot racing it's always something, isn't it?

#6 MSwiss

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Posted 25 January 2018 - 06:07 PM

Steve,

I'm guessing there are at least 300 Bartos chassis, alone, out there, with my angled bracket.

When you add the other chassis makers who use mine, along with all the R-Geos, and Dom Luongo's, it's just not practical.


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Mike Swiss
 
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#7 Ramcatlarry

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Posted 25 January 2018 - 06:27 PM

This group of slot car motors are the FK-180 family - 180mm instead of 130mm long. 

Yes, they do fit in many open center frames that have a level motor or undershot gear alignment. Length in not a dimension I have seen specified - either stack or can length. A longer stack with the right wind might improve braking.  
 
Not soldering the lead wires on the FK design brush tabs would help as well.
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#8 Samiam

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Posted 25 January 2018 - 07:03 PM

Length in not a dimension I have seen specified - either stack or can length.


In the IRRA® motor rules the stack length of the JKHR is listed as .390" . The TSR and F7 are listed as .375".


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#9 MSwiss

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Posted 25 January 2018 - 07:30 PM

.390" and .375".


Mike Swiss
 
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#10 Samiam

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Posted 25 January 2018 - 07:48 PM

Post corrected. :dash2:  

 

Thank you. 


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#11 Steve Deiters

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Posted 25 January 2018 - 08:15 PM

Interesting comments. Pretty much along the lines I thought they would be...

#12 Gary Adams

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Posted 25 January 2018 - 09:05 PM

NIH syndrome...
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#13 MSwiss

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Posted 25 January 2018 - 09:19 PM

Gary, Steve,

How do propose fixing the problem of obsoleting a couple thousand chassis with angled brackets or bite bars close to the front of the legal length motors?

Mike Swiss
 
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#14 Shooter7mustang

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Posted 25 January 2018 - 09:25 PM

Maybe "too long" has a different meaning to them.

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#15 Mike Patterson

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Posted 25 January 2018 - 09:58 PM

How do propose fixing the problem of obsoleting a couple thousand chassis with angled brackets or bite bars close to the front of the legal length motors?


You buy/build new chassis.
 
Jeez, do I have to point everything out?


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#16 NJ Racer

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Posted 25 January 2018 - 10:10 PM

Has this motor been submitted yet? I believe Andrew distributes them as well.

 

H_R Racing Crusher 50K.jpg


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#17 Cap Henry

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Posted 25 January 2018 - 10:12 PM

I think the manufacturer has to submit the motor.


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#18 Ramcatlarry

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Posted 25 January 2018 - 10:46 PM

H&R is as much a 'manufacturer' as JK, TSR, or PM. They may all come from the same assembly line, just different contracts. Wonder which direction the brushes are on the others?

 

I think it might work to get a .440" stack arm (Grp15/Contender) into a FK180 and longer magnets.  

 

We have 'developed' the frames to work with the short motors. The first kits and cars I ever saw would use a center weight to fill the void to the front of the motor. Can always rebuild the center rails at a minimum.


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#19 Tom Thumb Hobbies

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Posted 25 January 2018 - 11:21 PM

NIH syndrome...

 

No NIH here.

 

Since I sell them I have tried them. With the longer overall length of the motor and an angled motor bracket the front of the motor hits the track. Just like you couldn't put a HR in a chassis designed for a PD with most of the angled brackets we used then.


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#20 Pappy

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Posted 26 January 2018 - 06:34 AM

Steve,

I believe it is too long to be used with the angled brackets.

Since I haven't been racing Retro this is the first I've heard of an angled bracket. And since I've never seen one I'm not sure what the advantage would be to using one with the way I read the chassis rule. It's suppose to be a straight plane from bracket to front of chassis. Isn't this dropping the end of the motor below the straight plane?

 

3j. The bottom surface of the whole chassis (including the motor, but excluding the motor seal and guide flag) must be flat and straight in all directions, with no bowing or drooping of any parts below the plane defined by the front and rear clearance specifications. This will be checked by applying a straight edge to the underside of the car both across the frame and along the length of the frame. 

 

There is also a little sketch in the rule book showing this but it wouldn't copy and paste.

 

What am I missing here?


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#21 MSwiss

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Posted 26 January 2018 - 06:41 AM

The advantage is you get a better gear mesh.

 

The motor shaft is aligned with the axle shaft.

 

IIRC, Mike Steube angled his motor up, using the WRP motor bracket, in his seminal chassis building video, he did with Keith Tanaka, in 2007


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Note: Send all USPS packages and mail to: 5858 Chase Ave., Downers Grove, IL 60516
Make checks out to Chicagoland Woodworking, Inc.


#22 MSwiss

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Posted 26 January 2018 - 06:52 AM

PS-Bryan Warmack tested a high RPM, 1/32 motor, a few years ago at BP.

 

He said he has notes on it, that he'll check after the Checkpoint Cup, but it may of thrown a wire, but does know for sure it was nothing remarkable, as he didn't try a 2nd one.


Mike Swiss
 
IRRA® Components Committee Chairman
Five-time USRA National Champion (two G7, one G27, two G7 Senior)
Two-time G7 World Champion (1988, 1990)
Eight-time G7 King track single lap world record holder
17B West Ogden AveWestmont, IL 60559, ( 708) 203-8003
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Note: Send all USPS packages and mail to: 5858 Chase Ave., Downers Grove, IL 60516
Make checks out to Chicagoland Woodworking, Inc.


#23 tonyp

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Posted 26 January 2018 - 07:36 AM

With mikes non hypoid bracket if you build the chassis with a jig motor the front edge of Motor will sit right at the bottom of chassis and the pinion side will slant up to meet bracket. As long as you use the same style jig Motor as you will be running in the car you will have no problems. Issues come when someone uses a Proslot with has the undercut in the endbell than they try to put an fk in the car.
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#24 Pappy

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Posted 26 January 2018 - 07:39 AM

The advantage is you get a better gear mesh.

 

The motor shaft is aligned with the axle shaft.

 

So what you are saying is the motor bracket raises the bracket end of the motor above the .050" minimum height?


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#25 Pappy

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Posted 26 January 2018 - 07:40 AM

With mikes non hypoid bracket if you build the chassis with a jig motor the front edge of Motor will sit right at the bottom of chassis and the pinion side will slant up to meet bracket. As long as you use the same style jig Motor as you will be running in the car you will have no problems. Issues come when someone uses a Proslot with has the undercut in the endbell than they try to put an fk in the car.

Thanks Tony, now I understand how it works. It does raise the bracket end of the motor up. 


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