35 replies to this topic

[DOCinCanton]

I am very familiar with the JK Hawk 7 motor, having raced it for seven months now in the Florida series. However, I no nothing about the JK Hawk 6. How about some pics showing both in the same pic? And some gearing tips. I am gearing the Hawk 7 from 11/35 to 12/37, seems to work best. Is the Hawk 6 rebuildable?

We are going to have a 3 hour enduro for GT1 type cars. Which motor would be best? I doubt very much that I could get away with one Hawk 7 in this three-hour race. Now I can get at most three mains on a Hawk 7; that's 3 times 16 minutes of racing for each main. So I am thinking about the Hawk 6. What do you think?

[MSwiss]

Dan,

They are slightly slower, but not much.

If allowed, I would definitely use them over a Hawk 7.

Just make sure you replace the brushes with P/S Gold Dust, Koford SBF II, or JK's new Hawkeye premium motor brush, stock #JK303065.

Test and monitor the heat. You should probably be able to gear them more aggressively than a Hawk 7.

PS: Did you get the connectors from me?

[DOCinCanton]

Mike, Thanks for the reply. Yes, I got the connectors yesterday, thanks.

Heat: Does the same heat sink that fits the Hawk 7 fit the Hawk 6?

Gearing: gear the Hawk 6 more aggressively??? I gear the Hawk 7 at 11/35 (3.18)... So which way? 12 on a 35 or 10 on a 35???

I got plenty of Gold Dust brushes, no problem there. BUT the Big Foots are harder, shouldn't I run the Big Foots? And do you think the Hawk 6 would run three hours for me?

[Guy Spaulding]

The only thing comparable is the name.

The Hawk 7 is a throw-away motor. Just buy it, break it in, and race it until it dies. It is what it is, and will never be more.

The Hawk 6 is a rebuildable and upgradable, inside and out. This motor is the newer of the two, and has great potential.

[DOCinCanton]

What gauge is the Hawk 6 wound with and how many turns? Does anyone know?

[MSwiss]

Heat: Does the same heat sink that fits the Hawk 7 fit the Hawk 6?

 

Yes, the can is virtually the same as a Pro Slot.

Gearing: gear the Hawk 6 more aggressively??? I gear the Hawk 7 at 11/35 (3.18)... So which way? 12 on a 35 or 10 on a 35???

Smaller numeric ratio, AKA larger pinion.

I got plenty of Gold Dust brushes, no problem there. BUT the Big Foots are harder, shouldn't I run the Big Foots? And do you think the Hawk 6 would run three hours for me?

I have no way of knowing how "hard" the power you run on is on motors.

If winning is important, do a test, running the motor for three hours. If it makes three hours running on the track by itself, it should of course make it running three hours with a track full of cars.

[MSwiss]

What gauge is the Hawk 6 wound with and how many turns? Does anyone know?

Hershman might know.

I haven't bothered to check. It is what it is. Knowing the wind won't really give you any info you can use.

It's the first and only rebuildable Chinese motor available with neo mags, so you have nothing to compare it to.

As Guy mentioned, the motor has superb potential. For $14.95, even with unusable brushes, it's the biggest bang for the buck ever in a slot car motor.

[Guy Spaulding]

I believe Ron Hershman reported the Hawk 6 having 72 turns of 30 ga wire on stacks .395" L x .513" diameter.

This would answer why the this motor is a little softer than the H7.

But after playing with the Chinese arm, throw it away.

The H6 is designed like the original Hawk, but this time they did it right! The endbell is better designed to use American style brushes and commutators, and this opens some doors!

Neo magnets will allow some hot American winds. This should yield some F-Level Ionospheric performance. Sorry, no space travel, so perhaps the sky's the limit!

[DOCinCanton]

Mike,

You are right. I don't need to know about the windings. I thought that I had the wire specs for the Hawk 7 but I don't, just the Falcon 7.

Thank you for the input.

[MSwiss]

But after playing with the Chinese arm, throw it away.

 

I doubt they'll let Dan run an American arm in the Enduro.

I've and the rest of the IRRA™ had good luck with the Chinese arm.

Good enough luck, we decided to not approve it to race against the $41 P/S motors (and $11 and $12 TSR D3s & Falcon 7s).

[MSwiss]

You are right. I don't need to know about the windings. I thought that I had the wire specs for the Hawk 7 but I don't, just the Falcon 7.

 

My point, with a totally different can design and brush size, trying to accurately compare them isn't easy.

[Guy Spaulding]

I'm with you, Mike. We don't allow the Hawk 6 in any class. Not even against the C-can S16C and Superwasp.

Even with the Chinese arm, the Hawk 6 is seen as a potential giant killer.

[JohnnySlotcar]

We run the Hawk 6 in GT1 class. They are .15 faster than the Hawk 7 when geared right. We run them around 11/40 with .700" tires on a Grandstand with 13.4 volts and they last many races.

Send the arm to Alpha for a recondition and it will be .2 faster!

[Phil Irvin]

Hey Doc,

PM sent.

PHIL I.

[havlicek]

For $14.95, even with unusable brushes, it's the biggest bang for the buck ever in a slot car motor.

For sure!

-john

[Prof. Fate]

Hi

The wind is a 30 on the 6, but the magnets are about 25% stronger. Thus, while I gear the Hawk 7 4:1 on our kingleman, I run the 6 at 3.3 or so.

While the Kingleman isn't much of a "motor" track, my 6 builds have won several local "open motor" races when driven by Mike Kelly.

Fate

[tonyp]

I have one of the test motors we used for IRRA^® evaluation. It has about four hours on it now and it is still really fast. I had been using it as a practice motor as it is close to the Pro Slot in the power and brakes. Last weekend I threw it in my stepdaughter's car and she ran it for an hour at ASR on the king. The brushes they come with are junk, just put in some good ones.

[Noose]

I have been using one too in a car for practice that has hours on it. It was a refurbed one and runs great.

Stock ones are fast but the brushes, as noted, just don't last.

[Don Weaver]

I was thinking (?) that the Hawk 6 was the one that needed cut-down brushes to run good. Is this not the case?

Don Weaver

[MSwiss]

The problem turned out to be more the soft brush material that came stock in the motors.

IMHO, they still run cooler, you can pull a larger pinion, and you get less arcing at the comm with the cut brush.

But guys are running fine with normal size brushes, immediately installing them, rather than pre-grooving the comm, wasting time with trying to run the soft brushes, that will maybe last 10 minutes.

[Phil Irvin]

I found that the stock brushes are good for 3 races---48 min. and a HOT runner. I did the cut brushes and did cut the heat. Still wore them out quickly...I ran out of my Gold dust brushes about 6 months ago building 2 S16d motors but running sealed motors I didn't need any.......
GOLD DUST HERE I COME.....AGAIN

OLPHRT
PHIL I.

[DOCinCanton]

I am challenged about magnets. OK, the NEW JK Hawk 6 comes with NEO magnets. So I assume that there was an earlier version with something else. What did the earlier version have for magnets? Also, If I walk into a slotcar shop tomorrow and buy the Hawk 6 motor off the shelf, how do I know that I'm getting the NEW version with the NEO magnets?

[MSwiss]

While Jerry has too many Hawks, there is only one version of the Hawk 6, and is only available with Neo magnets.

There is just a plain old Hawk, but the stock # and packaging is different. It has the same can, but ceramic mags,better brushes, a black endbell and a hotter wind, and way less reliability.

[havlicek]

...but even the "plain old Hawk" is a great motor for screwing around with! So people who have them lying around because they went to the new model, might want to crack them open and have at it! Those little ceramics, while not up to the neos of course, are fine.

-john

[JohnnySlotcar]

The original Hawk is also an excellent motor.We run them in our $100 wing cars.Have alpha epoxy and balance the arms and they are good for 4-5 races in a wing car.I put a p-s hawk arm in one and it is a cool running rocket geared 10-37 with .750 tires on a 70 gram wing car.