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Professor Motor PMTRHR IRRAź motor submission


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#76 MSwiss

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Posted 01 February 2018 - 11:01 PM

PS - and Cap....welcome to JK Shilltown, where all racer's who offer an honest opinion, go to, to be ridiculed by Mike Fleming, for not agreeing with his opinions. LOL


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#77 Cap Henry

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Posted 01 February 2018 - 11:11 PM

I like both motors, but they arent equal and both have their own short comings. The IRRA has said they want a retro hawk speed motor that is a closed endbell design. The PSFK isnt either.
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#78 MSwiss

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Posted 02 February 2018 - 12:13 AM

I like both motors, too, Cap.

Other than Sano time, I probably sell more 4002FK's, because it's the motor we use in two of our weekly racing classes, vs. one, that we use the Retro Hawk, in.

If I didn't want the 4002FK's to succeed, I wouldn't of had Geary come up with a terrific hood alignment jig, or sell cut brushes, which are real necessary with our Hardbody class.

I make a tiny bit of money on cut brushes, but I probably cut 4 or 5 times as many stock brushes, N/C, than I sell precut SBFII's, and Gold Dust.

Now let's get back to the point of this thread, the Professor Motor.
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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 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: 5858 Chase Ave., Downers Grove, IL 60516


#79 Jeff Bonanno

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Posted 02 February 2018 - 07:38 AM

I tested Two Professor Motors at P1 Raceway here in Florida, a short hillclimb. I practiced on Yellow lane which is the lane we qualify on. Both motors ran equal with times of consistent 4.0's. Ran about 50 to 100 laps with times not slowing or getting faster, both were quite consistent in that aspect. 

 

Normally with a 7R i can easily run below 4.0's, that same day i qualified 3.73 with brian ambrose qualifying 3.72 with our fastest 7R's.

 

Now granted i only tested two professor motors so i cannot quite say they are slower or faster quite yet....

 

I will be testing these a little bit at my home track at Fast Eddies this Saturday as well. 


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#80 Samiam

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Posted 02 February 2018 - 09:31 AM

I'd hate to start to sound like Flem but the 4002fk motors are much closer in performance.

You will know when you start sounding like "Small Mike Fleming". You'll find your posting privileges have been suspended(here and on OWH) and then, like Small Mike, are relegated to Fakebook to discharge negativity during bouts of verbal explosive diarrhea. 

 

But you are OK. Everybody has opinions. That is what this place is all about. 


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#81 MSwiss

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Posted 02 February 2018 - 04:16 PM

IIRC, MF left Slotblog on his own.

 

But I'm pretty sure he was thrown off of OWH for his boorish behavior.

 

Back to the Professor Motor.

 

Next chance I get to try one, I will try 10-28 gearing.


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 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: 5858 Chase Ave., Downers Grove, IL 60516


#82 Brinkley47

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Posted 02 February 2018 - 04:19 PM

IIRC, MF left Slotblog on his own.
 
But I'm pretty sure he was thrown off of OWH for his boorish behavior.
 
Back to the Professor Motor.
 
Next chance I get to try one, I will try 10-28 gearing.

what gear did you try the first round? I am sure it is posted somewhere but I dont remember. I bet a 9.26 or 10.28 May wake it up.
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#83 MSwiss

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Posted 02 February 2018 - 04:26 PM

9-27, what was on my 3rd place GT Coupe, 7R handout car.


Mike Swiss
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Two-time G7 World Champion (1988, 1990), eight G7 main appearances
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Note: Send all USPS packages and mail to: 5858 Chase Ave., Downers Grove, IL 60516


#84 Noose

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Posted 02 February 2018 - 07:59 PM

All my testing has been at 9/27


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#85 Jeff Bonanno

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Posted 03 February 2018 - 05:42 AM

I tested with 9/28. I could try 27, 26 and even 10/28.

#86 tonyp

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Posted 03 February 2018 - 08:34 AM

I ran the one I had Sunday 9-28 on the hill climb at P1raceway. Punch was good but it was slow on the straight. Going to a 26 did not help much. Now this Motor had a ton of gash balance holes in the armature on all e poles with probably 30-40 percent of the crown ground away. I would say the messed it up when balancing and tried to fix it. It also draws almost double the amp draw of the other so I had little hope for that one.

Doc and I tested the other 4 Motor also at 9-28 and a couple were about the same as the average 7rwe used as a test motor. We are going to break in the brushes even more and try them again next week with alternate gearing. In my opinion so far they run like an average 7r on the hillclimb at P1. Power is via battery 13.8 volts.

We ran up on White as that gives a longer straight.

7r control Motor. 4.22
Pm2 4.28
Pm1 4.27
Maryann 4.35
Ginger 4.38
Gilligans 4.40 the one from Sunday with all the balance holes.
The bottom 3 motors were broken in with out chemical enhancement. All motors had full brush tracks but leading edge of brush still shows arc.

The time with the 7r was easily turned while to try and get the best time with PM motors you had to really push the car.

No 2 speed issues, the motors usually took 2 laps to warm up. They then ran a 30-40 lap stint at the same speed.
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#87 Eddie Fleming

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Posted 03 February 2018 - 09:13 AM

I know you are not finished testing but so far I see nothing to keep it from being legal.

 

On the other hand I see nothing that makes me want to run one.


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#88 slotcarone

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Posted 03 February 2018 - 09:42 AM

Sounds like a Three Hour Tour!! :)


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#89 Dominator

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Posted 03 February 2018 - 11:24 AM

Thank you Tony and Doc for taking the time to test these motors. Looking forward to hearing if they improve with more break in.
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A motor is only as fast as the chassis it's in.
 
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#90 Eddie Fleming

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Posted 03 February 2018 - 11:53 AM

Sounds like a Three Hour Tour!! :)

On the SS Minnow.


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#91 Rich Goucher

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Posted 03 February 2018 - 12:13 PM

Thanks to the Board members for their time and expense testing motors for

our racing enjoyment. It is appreciated.


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#92 usadar

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Posted 08 February 2018 - 11:30 PM

I have just tested 4 of them on a power supply.
One of the four looks very good.
I am going to check some more from now.
In a few hours, I will post detailed results.
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#93 usadar

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Posted 09 February 2018 - 04:07 AM

A brief report of Professor Motors Retro motors.

I broke-in and tested seven of them with a 37.44 gram flywheel on a power supply at 12 volts.

Two of them, X2 and 6, have uncomfortable vibrations around 12v.
X3 and X6 look very promising.
Looks like PM motors are similar to Retro Hawk R.

I will test them on my Gerding King on Sunday.

For your reference:
In the same way as above, I tested 15 R Retro Hawks I bought from JK's online store as their last official R leftovers.
Two of them seem to have vibration problems.
Four of them reach around 47,500 rpm.
The others are between 45,000 and 47,000.

I tested a R motor with the dyno data of 47,348 RPM/2.2amp on my Can-Am last Sunday. 4.05 on orange.

 

83C15889-E28B-461C-B482-CDCA39038E53.jpeg

 

DE69282A-A892-421B-86D3-D4A2CF10D43D.jpeg

 

1427B031-AC94-4611-9486-E06D7532DB22.jpeg

 

42FF45C1-6596-4DD9-877A-AD2BC9B6E7F5.jpeg

 

FBDD8DBC-BC56-4BB8-A46C-328BA796F24A.jpeg


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#94 Eddie Fleming

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Posted 09 February 2018 - 07:17 AM

Does running with a flywheel like above dampen vibration and help/stop the two-speed issue?


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#95 Cheater

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Posted 09 February 2018 - 08:00 AM

Eddie,

 

I think it simply puts an inertial load on the motor and thus more closely duplicates actual running conditions in a car.


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#96 Eddie Fleming

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Posted 09 February 2018 - 08:13 AM

I understand that, but a flywheel has the effect of dampening changes in speed and direction as well. That is assuming it is in balance.


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#97 usadar

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Posted 09 February 2018 - 08:21 AM

Does running with a flywheel like above dampen vibration and help/stop the two-speed issue?

 

In addition to what Greg says above, this aluminum flywheel works as a big heatsink.
During the test at high voltage such as 12-14v, motors run very cool for a long time.
I remember motors got so hot when I testing them at 8v on a Monster Machine just after a few minutes with just a small RPM detector on the shaft.


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#98 MSwiss

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Posted 16 March 2018 - 03:53 PM

if the motor has hard brushes I would assume it's just like a new Hawk 7R; don't bother with it, just throw it in the trash. I thought the IRRA® had a "motor guy" to check out motors. What happened there?

 

I've been busy getting ready for a party so I haven't had time to check out the later R4/11 GTC-FK races.
 
I hope with all the stress the IRRA® has caused Gil, he's at least had a somewhat positive experience at the race.


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 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: 5858 Chase Ave., Downers Grove, IL 60516


#99 slick in the slot

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Posted 20 March 2018 - 05:28 PM

very positive. very positive indeed. :)

 

 

I've been busy getting ready for a party so I haven't had time to check out the later R4/11 GTC-FK races.
 
I hope with all the stress the IRRA® has caused Gil, he's at least had a somewhat positive experience at the race.


Gil Pataky





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