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Professor Motor B52 ball bearing motor


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#26 bbr

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Posted 02 April 2019 - 01:02 PM

I did a 5 sec dip in simple green and about 30 sec in water for clean out at 2.5 volts
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#27 MSwiss

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Posted 02 April 2019 - 01:09 PM

How did it perform vs. Hawk Retro?

Mike Swiss
 
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#28 bbr

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Posted 02 April 2019 - 08:40 PM

Ran it in a CA after the last retro race at Bpr.
TQ was 3.9 range that day. I let Alex run some laps and he did some 3.9s. The chassis setup was a little loose, with a proper setup may be 3.8 - 3.7s possible.
The b52 certainly winds up faster. I definitely think that the bb keeps everything line up and spins more rpms.
Mike Low
Cry like a baby, drive like a girl, walk like a man.
Give me enough rope and I'll build a fast car... or hang myself?

#29 Upfront slot cars

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Posted 03 April 2019 - 08:15 PM

The arm is a diff wind from the retro hawk.
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#30 MSwiss

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Posted 03 April 2019 - 08:24 PM

What is the wind? (unless that is classified info-lol)

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: 5858 Chase Ave., Downers Grove, IL 60516


#31 Upfront slot cars

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Posted 03 April 2019 - 08:32 PM

56-.25mm
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#32 MSwiss

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Posted 03 April 2019 - 09:24 PM

Thanks.

I thought for a second, it was super-top secret, like the recipe for Pancake Pantry Cinnamon Creme syrup. Lol

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: 5858 Chase Ave., Downers Grove, IL 60516


#33 Upfront slot cars

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Posted 03 April 2019 - 09:40 PM

That syrup is too sweet in my opinion ! I order the pigs in a blanket.
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#34 TallyBernie

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Posted 04 April 2019 - 09:16 AM

I recently bought two B52s for testing but have not had time to put one in a car.

Based on the B52s packaging (50K RPM on label) wouldn’t a better comparison be made between it and the Hawk 7 (not HR)?

At this time more a point of curiosity....


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#35 swodem

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Posted 28 May 2019 - 06:49 PM

3 of us ran the B52 in our Handout 4.5hr enduro over the weekend

No run in at all except practice

So maybe got 5hrs true running time in heavy Mack Genesis lazercut chassis with LMP bodies

This is a (poorly focused) pic I got sent of one of the motors post race

To me it looks like the brushes are barely worn...

af343378880981e83fffc7f6f1c38524.jpg

When I get my car back I’ll do a set of pics

Impressed with the motors so far...

Steve


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#36 TallyBernie

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Posted 29 May 2019 - 10:34 AM

I finally tested the B52 50K motor and found it to be very smooth and pretty quick. With my limited time, and all other factors being the same, Id say easily on pace with a Hawk 7.

Were still testing when time permits. Have yet to use one in competition.
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#37 swodem

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Posted 29 May 2019 - 03:34 PM

56-.25mm


Anyone know the wind on the B52 25k motor?


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#38 Greg VanPeenen

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Posted 29 May 2019 - 05:21 PM

Someone on this thread said they were 56 of .25mm



#39 swodem

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Posted 29 May 2019 - 05:22 PM

That’s the 50K model




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#40 swodem

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Posted 08 June 2019 - 05:08 AM

So got the car back today
It did a 4.5hr Enduro with me, then we sent them to the Wellington City club and they ran a 2.5ht enduro.

So it’s had a genuine 7hr plus a bit of practice run time

Brush wear almost non existent

a2d329e666266b73958920a19ead0615.jpg


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#41 swodem

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Posted 08 June 2019 - 05:14 AM

And one of the other motors from another of the cars

5c34af6b202ac0cb2fd954487b76fb8f.jpg


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#42 TallyBernie

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Posted 08 June 2019 - 09:39 AM

Impressive! Are you finding it similar to the Hawk 7 in performance, in otherwise identical setup?
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#43 swodem

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Posted 08 June 2019 - 04:53 PM

Impressive! Are you finding it similar to the Hawk 7 in performance, in otherwise identical setup?


To be honest we haven’t used H7 down here since 2015.
Our current motor is the PS4002Fk which has its issues
On paper it should do well, but those who have run it like-for-like against a 4002 say it’s not as fast. So I would then say it’s slightly slower that a H7 too

Don’t know why because it’s wind spec indicates it should be a little faster, but I’m not clear on it’s arm timing or magnet type until I pull one down

It’s certainly smooth so would do well in a class that has low downforce


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#44 Alchemist

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Posted 09 June 2019 - 04:17 PM

Hi Steve,

 

 

 

So got the car back today
It did a 4.5hr Enduro with me, then we sent them to the Wellington City club and they ran a 2.5ht enduro.

So it’s had a genuine 7hr plus a bit of practice run time

Brush wear almost non existent

 

That is excellent information!

 

Thank you for sharing it.

 

May I inquire as to what gear ratio you employed during that Enduro race please - and what type of track was the Enduro run on?

 

Thanks again Steve.

 

Ernie


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#45 swodem

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Posted 09 June 2019 - 04:26 PM

The chassis has a special cradle for supporting bolted in tin can motors both ends
It’s designed for 64p 11t pinion and 37t (angled) gear
So that’s what we ran and the mesh was perfect.
No gear failures or issues in both races and no parts were changed

631368fd33a81028ec57906c1546eae4.jpg

The 4.5hr track used is 3-lane home built garage flat track with all corners, no straights (true). Lap times in the region of 3.3sec as average

The 2.5hr track is our Nationals track down in Wellington. It’s a 6- lane, 53m long flat track and average lap time (with this setup) 6.6sec. Some long straights



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#46 Greg VanPeenen

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Posted 09 June 2019 - 06:15 PM

I just got 4 of the B52 50K motors. Will be running one in a Trans-Am race this coming Tuesday. Flexi chassis, 10 tooth pinion 64P rule, .750 rear tires, Trans-Am bodies Camaro, Mustang, and AMX. We also run the same chassis set up in 4 inch stock car with low down force COT bodies, The motor rules call for Hawk 7's So we will see how the B52 50K motor stacks up against a flock of Hawks. 

 

I can tell you that the ear tach says the B52's Rev quicker and are much smoother . Hanging from the power supply wires a 6 volts the B52 motors move very little to none compared to the Hawk 7. Another thing I noticed was that 2 of the B52 motors were balanced with a grinder and the other 2 were drilled to balance. It didn't seem to make any difference.

 

I will post how they do after the race.

 

Regards,

Greg VanPeenen


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#47 Jay Guard

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Posted 09 June 2019 - 06:22 PM

Greg:

In what series are you running the Trans-Am cars?  Also, who makes the bodies? Finally, I'd love to see a few pictures of the cars you are running, sounds like a great class. (Sorry for the thread drift!)

Thanks!


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#48 Rotorranch

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Posted 09 June 2019 - 06:27 PM

The AMX is not a Trans-Am body but the Javelin is!

 

The AMX is a 2 passenger car derived from the Javelin.

 

The Trans-Am Series was for 4 passenger cars. 

 

Rotor


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#49 swodem

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Posted 09 June 2019 - 08:41 PM

Gave the B52 motor and chassis a good cleanup today, and got rid of all the black scum on the comm.
 
b8a5652422760ccba4426baf79ff7313.jpg
 
Now it runs much better with pretty consistent amp draw at low voltage and seems a little happier
 
"A clean slot car is a happy slot car" someone once said 

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#50 Greg VanPeenen

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Posted 10 June 2019 - 12:26 AM

The AMX is not a Trans-Am body but the Javelin is!

 

The AMX is a 2 passenger car derived from the Javelin.

 

The Trans-Am Series was for 4 passenger cars. 

 

Rotor

 

 

 

The American Motors Javelin AMX was a Javelin called an AMX the Javelin had a back seat and the AMX did not.  I have never seen a true Trans-Am  Race Car with a back seat.  I have owned all 3 cars Camaro 69 Z-28 with 4 wheel Disc brakes, and the duel quad Intake. Heater and radio delete. 1969 Ford Mustang Boss 302 , and a 69 AMC Javelin/AMX . I am not a MoPar fan so I never owner that one. 







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