7 replies to this topic

[Dave_12]

What armature works well in a Hawk 6 setup?

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[Mr. M]

The Koford G12 arm made for the H6 works really well. Very fast for not much in $. There is another Koford arm that is the same as the stock arm that runs much better and is roughly equivalent to a Group F motor.

[Bill Seitz]

David, there are 2 versions of the H6 setup, a poly neo and a solid neo. Koford has '12' arms with different timings, 25 for poly and 40 for solid. ProSlot has several arms. Their 25 degree '12' and 'Big Dog/BD' (like a Super Wasp) arms work with poly neo. Another lower cost performance option in solid neo is the ProSlot 'Razorback' drag racing arm. This is a Chinese arm for the 'Razorback' motor with a 30T28 wind, far more than the 50T29 '12' arms. I've successfully tested the 'Razorback' on circuit track, and as long as the gear ratio is high enough to stay cool (9/38-9), it runs well. For a really wild motor, again only with solid neos, there's the ProSlot Velociraptor line of drag racing armatures up to open winds. So far, I've only tested to the 30T26 'VX' arm, but have just installed a 24T26 'Wolf' in another setup. I had to dig out some smaller pinions. The key for circuit track is to keep the motor revving to control heat, but otherwise these perform in the realm of a cobalt motor, though the lighter cobalt setups will handle better.

[Wink Hackman]

At our club (typical 4 lane UK track, much slower than raceway), we run a class using these setups with a Proslot Big Dog arm (55t30).  We also allow the Proslot 4002 motor, and mix n match with all the magnet types.  Actually for us, the PS ceramic mags in the Hawk 6 setup work best.  But for larger tracks the poly neos will give more power.  I really like the Big Dog arms, but be aware that the shaft is softer than that on the Koford G12 arm, so you need to run ballraces or the shaft wears out before the comm.  Oh, and generally the endbell bushing or bearing is prone to spinning so it needs to be glued in.

[DOCinCanton]

The first thing that I do with the Hawk 6 motor is to change out the can bushing. This bushing is too hard and will wear down the armature shaft. Once the shaft is worn down it will forever rattle around at high speed, cutting RPM significant.

[Bill Seitz]

I've noticed that all of the Chinese motors using bushings have plated steel bushings rather than solid bronze or brass bushings. Lubrication seems to be a major influence on results with these bushings and in the softer armature shafts on some products. I've had even the stock Chinese armatures cut a plated steel can bushing, yet others report the shaft wearing first. I've noticed the Chinese armatures now having plated shafts which make them oversize to begin with. The plating has to be removed to fit them in ball bearings, and perhaps this is what's wearing on the shafts. Drill blank shafts used to be the ultimate material, but now we have hardened steels that are still more resistant. Unfortunately, all product doesn't come with the latest in shafts. I haven't had a huge amount of problem with worn shafts, more with worn bushings, and I now use ball bearings on just about everything, though they can have their own pitfalls. I've also switched to full synthetic ATF for lubricant which seems to have solved a host of bearing and shaft wear problems.

 

ProSlot changed their new 'F' can to a 5 mm bearing. The old can used 6 mm as does the JK Hawk 6 can. The smaller bearing is slightly lighter, a 5 mm ball bearing may have a bit more rpm capability, but I still have a warm spot for the larger 6 mm can bearing. I've broken a few 5 mm ball bearings, but I can remember when I broke a 6.

[Larry Horner]

Dave, I second Bill's comments that the ProSlot Big Dog arm in the neo can is a great combo. I might add that these arms seem to be exceptionally well balance resulting in a silky smooth running motor. I always use bearing both ends so I really can't comment of bushing wear. And if you want to take things down a notch, ProSlot's Hawk replacement arm also is a great combo (sits in between the Big Dog and Puppy Dog).

[team burrito]

the stock hawk 6 armature is actually pretty fast. you should try it, then when it blows up, you can replace it with a big dog.