reversing a modified motor for a clod.........

[cyclepsych0]

hi everyone,

i recently aquired 2 new TEAM ORION "HAVOK" 17t double motors and want to install them in a clod buster. what steps are neccesary to "reverse" a modified motor? i keep getting mixed answers from my local hobby shops in town.......any help would be great as i really want to run these motors!![]

[addict again]

I heard that you can just reverse the polarity of the motor,and i also heard that you do NOT want to adjust the timing when running it that way. I am not 100% sure i or they know what they are talking about but perhaps someone else can elaborate a bit on it. Sorry i cant give you a for sure answer [:I]

[terry.sc]

To run a motor in reverse you will need to reverse the timing on the reverse motor. If you don't adjust the timing the motor will run slower, have little torque and draw huge amounts of current at the same time. Unfortunately the timing on Havok motors is fixed so it cannot be adjusted without a little bit of work. At least it is rebuildable. If you don't want to attempt to modify a new motor you will need to swap the motors for ones with adjustable timing which makes it a lot simpler.

If you want to go ahead with modifying one of your motors here's what you'll need to do. If you look around the join between the can and endbell you will see a notch in the can and a plastic lug on the endbell which locates in it. To adjust the timing you will need to remove this plastic lug so the endbell can rotate. Remove the motor brushes and springs first, then remove the 2 screws holding the endbell in place. Remove the endbell making sure you do not lose any washers from the armature. Do not remove the metal ring or motor armature from the can, if you lose any washers from the other end of the armature they are very tricky to get back in place. Cut the lump off the endbell, I would suggest using a junior hacksaw or dremel rather than a knife, less chance of injuring yourself. Make sure every part of the lump is removed or else the endbell will not go back straight.

Reassemble the motor, screwing the endbell to the timing ring inside the can. Before you tighten up the screws you need to turn the endbell clockwise so the angle of the endbell is advanced in the opposite direction. You have a spare motor to compare the endbell with, try and make sure the angle of advance is the same but in the opposite direction. Tighten up the endbell screws and reintall the brushes and springs.

Your motor is now timed for reverse rotation.

[48chebbie]

to my understanding,and experience over the years,as long as the motor is timed "0" degrees,just reverse the polarity,and have at it!!

[terry.sc]

quote:Originally posted by 48chebbie

to my understanding,and experience over the years,as long as the motor is timed "0" degrees,just reverse the polarity,and have at it!!

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Any modern motor apart from the standard silver can 540 has some advance. Hot modified motors usually have 10 - 15 degrees advance, stock motors usually having 24degrees of advance which gives a huge performance hit if you run it backwards.

The Havok motors mentioned above have a good amount of advance on them, which is fixed and unable to be adjusted without resorting to modifying the can as explained above.

[cyclepsych0]

thanks guys!

all your replies have been helpful. thanks for explaining in full depth terry![]