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Retro Hawk motor issues


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#1 raisin27

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Posted 05 November 2017 - 12:30 PM

Deleted at the request of Raisin.


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Michael Garrett

 

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#2 Butters37

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Posted 05 November 2017 - 12:42 PM

From a track owner I was told the ones in the blister packs have been bad lately.

If you find a good one send it my way. The only good ones I have are handouts from the rR4 last year. The last 15 I bought... paperweights in comparison. It's not even close.


Jason Engel

#3 JK Products

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Posted 05 November 2017 - 12:52 PM

Hi Michael,

 

Do you still have the 10 motors? I'd like to evaluate them.

 

Tim


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#4 raisin27

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Posted 05 November 2017 - 01:04 PM

Yes, I still have them.


Michael Garrett

 

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#5 Cap Henry

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Posted 05 November 2017 - 01:52 PM

I just broke in five new ones last week, and all were ran within a tenth of the track record on my King.

One did blow a segment of the comm within five laps, but they were all broke in using Simple Green so I can't say that wasn't a part of it.


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#6 Fast Freddie

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Posted 05 November 2017 - 02:13 PM

Cap, don't know if you read the "caution" I wrote about Simple Green break-in but here it is. 

 

I also use the Simple Green method to break in my HR motors. I follow the recommended procedure that Matt Bruce said to use except for one additional step that I added. 

 

After you have the brushes seated and the motor flushed out and thoroughly dried and before the 2 min final power supply session. Make sure the comm slots are free of any brush material. I toasted a motor because I didn't check the comm slots. 

 

I have since learned to run the motor for about 5-10 seconds after I have dried it out then I check the comm slots and if they are free of brush material I go ahead with the 2 min. final break-in. If not I clean them out with a toothpick.


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#7 Cap Henry

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Posted 05 November 2017 - 02:24 PM

No. I didn't, Freddie. I looked in them all, admittedly not overly close, but they looked OK.

I'm by no means upset, it's $13 and I'm accepting that I broke them in using a way clearly against the manufacturer's advice.

Sorry for the drift LOL.


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#8 Frankie Schaffier

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Posted 05 November 2017 - 02:54 PM

Yes, only $14 but as is said above and we've all seen it, sometimes you have to go through a bunch to find a couple good ones. I look at it this way... Pro Slot is at least working towards improving their FK series motor, not that they are perfect either but listening to racers and working to assure the best that they can that they work out of the package with some consistency.

 

JK is still selling motors with the brushes in backwards and we wonder why there are issues.


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#9 bbr

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Posted 05 November 2017 - 03:04 PM

The Simple Green break-in does leave a deposit in the comm slot. One motor had a fire while I was running it at 3 volts after the break-in.


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#10 Matt Sheldon

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Posted 05 November 2017 - 03:33 PM

Has any one else experienced slow 7R Retro Hawk motors lately? I purchased 10 motors before the Sano and found only two that were even close to being useble and one of those blew up. Most are at least 2 to 3 tenths off the pace.

 

I bought 10 more and tried six of them at Tom Thumb recently with not a single one being usable.

 

There seemed to be a much higher failure rate of motors at the Sano than normal I thought. Matt Sheldon blew up seven or eight motors over the weekend.

 

I have not changed my break-in procedures or anything else. Normally in the past I have found about 20% of the motors to be exceptional, 60% to be good and 20% to be duds.

 

Of the 18 I purchased prior to Sano I had 10 fail. Four threw windings, five that started OK but then simply lost their brakes and then slowed to the point that they did not finish their first race and one that the brush fell off the arm. The other eight I put in a red bag for now.

 

This is the first time I have ever had any Hawk Retros fail, ever. I have been a strong supporter of the motor and feel I have had above average success with my break-in procedure.

 

My hand-out motors from Sano have seemed to be OK.

 

Not really sure what I am going to do at this point. I gave away 30 NOS R motors to Ralph Thorne as I initially was liking the additional brakes the 7R seemed to have. Currently racing only once a month and driving 2.5 hours each way to do it, I do not like not being able to trust my equipment as it takes the fun out of it.


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#11 Matt Sheldon

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Posted 05 November 2017 - 03:39 PM

My R4 hand-outs are the best 7Rs I have found, but admittedly until right before Sano I have not really had any bad ones.
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#12 Jeff Bonanno

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Posted 05 November 2017 - 04:10 PM

Hmm, I used about 10 of my new ones, with two being pretty fast but one of those fast ones lost its brakes the more I used it and the other one didn't lose brakes. The other eight were just slow to average.

#13 Brinkley47

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Posted 05 November 2017 - 06:02 PM

I had problems with new JK 7Rs, too. The good new 7R motors will fall off at times and then pick right back up. I have verified this on and off the track.
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#14 Joe Rocket

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Posted 06 November 2017 - 06:54 AM

Just recently purchased four new 7R motors and all of them were paperweights. Out of the eight motors I own I have one good one that I have run four times and I'm sure it's on its last legs.

Having to spend $100+ to get one good $13 motor is a bit ridiculous. Didn't we start running "sealed motors" to help everyone save money?
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#15 Rob Voska

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Posted 06 November 2017 - 07:24 AM

I have a bag of Group 12 arms looking for the golden trud same here the cost of slot racing.

 
Just maybe it's not as much the motor as it is the 14v punchbowl tracks...  :dash2:

Just sayin...
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#16 Bryan Warmack

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Posted 06 November 2017 - 10:54 AM

FWIW... Out here on the West Coast at Buena Park Raceway I haven't heard of any of the racers complaining about performance issues with the Hawk Retro 7R motors.  :)
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#17 Justin A. Porter

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Posted 06 November 2017 - 11:16 AM

Biggest issue I have seen with the new Retro Hawks has been somewhat Simple Green related.

If the rinse water isn't dead clean and that motor isn't totally hosed out of the Simple Green then it seems to cling to the comm and just plain gums up the works.

 

I've found that the occasional lighter fluid hosing with the motor running can clear the last bit of the Simple Green out and wake up a stubborn motor (or Niftech comm cleaner if you happen to have some) but at that point you're really compromising the potential life of that bullet!


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#18 Matt Sheldon

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Posted 06 November 2017 - 11:24 AM

My final step is running the motor for 10-15 seconds in alcohol. Gets rid of break-in fluid and contamination.
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#19 The Number of

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Posted 06 November 2017 - 12:48 PM

Vodka, Jack Daniels, single malt scotch? :)
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#20 Cap Henry

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Posted 06 November 2017 - 12:55 PM

Bud Light LOL.

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#21 Racer36

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Posted 06 November 2017 - 01:20 PM

I think a splash of Jose Cuervo would be a much better choice. It always motivates me!


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#22 Gator Bob

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Posted 06 November 2017 - 01:33 PM

Sounds like it would be best to get those motors from BPR.


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#23 Tim Wilkins

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Posted 06 November 2017 - 02:19 PM

The hand-out motors we used at BPR for the Summer Western Classic were for the most part excellent. I bought some of the leftover motors. I assume that batch is sold out and haven't needed to purchase a new JKRH motor since then.

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#24 jimht

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Posted 06 November 2017 - 05:04 PM

One more time... sealed motor racing is not about saving money.
Those who can afford it will always outspend those who can't or won't, as long as they're allowed to do so.
 
Sealed motor racing is not about parity.
There's way too much variation allowed in the cars to have the motor be the deciding factor.
 
Sealed motor racing is about eliminating the building and/or tweaking of motors so that there's more time to do other stuff... like building chassis or walking the dog.


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#25 Tom Eatherly

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Posted 06 November 2017 - 05:27 PM

FWIW... Out here on the West Coast at Buena Park Raceway I haven't heard of any of the racers complaining about performance issues with the Hawk Retro 7R motors.  :)


Bryan, what's the voltage on BPR's King? And you're right, mo complaints [so far] regarding R7s or whatever they are now from out West. Guess I'll be finding out about these Hawks on the King soon enough.
Tom Eatherly





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