Web site for motor maintnece and nihm bat charging?

[TopKatz]

Hello electric rc doodz!

I recently got back into electric rc cars. Im looking for some on-line info on maintaning my mod motor and on the corect settings for charging my 3000mh nihm packs.

thanks in advace guys

[1822]

This is probably the best place to get that info. Just tell us what equipment you have and ask whatever questions. Either that or just read the instructions for your charger.

[TopKatz]

The motor is a reedy MOD TI 13t dbl. Im running it in a TC3 rally that I have been running in front of the house. It works really well to run "special stages" in and out of the walk ways and drive ways around the house. Its like a lazy mans track ; )

This morning I cleaned up the brushes and the com with a couple of cue tips with alcahol. I got some gunk out of the motor, then put a little dab of com oil on. The motor rean exceptionaly well after that. Im asuming I should get some motor spray, and a com stick?


The Charger is a MRC super brain 959 (lavender in color) and I curently have two venom 3000 mh nihm packs. I have been charging them at .5 and 10 mv. They have been reaching any where from 8.10 - 8.20 . Is this about right? Should I be using a more agresive setting? I know there is lots of trashing of the brain on the boards, but its what I have for now.

Thanks

Katz

[highroller]

For the batteries it depends on whether they are Panasonics or the Sayno HV, I 've only found one method with Panasnics and still they never stayed consistant - charge at 5amp with a .03mv detect setting, they can be stored discharged down to 5.40 volts for a 6cell pack but should be discharge before charge (charge better if cell voltage is lowered as much as possible before recharging). Must be used frequently 2 wks or cells do detoriate. For Sanyo charge at 5-6amps (3.50 is fine depending on charger's rate) - pack can be stored at .90 volt per cell (5.40 volts for 6cell, 3.60 volts for 4cell) again use a lower load of .50 to 2amp to remove any residual voltage from cells - helps cells to charge better and limit some of the false peaking. Packs can be store discharge up to a month without use at ,90 volts per cell, but may charge irratically the first use. The GP are treated pretty much the same charge at 5-6amps, store at .90 volt per cell. Best of all the NiMH cell available today, more durable, consistant, higher voltage and lower resistance.

For the motor stay away from the high silver type brushes like the 737 or 738 and use the low silver 729, the copper head springs provide enough tension for bashing if you keep the timing as set and use the correct gearing. Clean the motor with a good motor cleaner (some racers use the automotive brands of electric motor & contact cleaner which may be cheaper) and oil the bearing with 3 in 1 which is another cheap alternative to the rc brands. Adding a brush or timing that would normally be used for racing like Reedy 738 brushes or increasing timing the stock spring are generally not suficient, that's when I use Trinity Purple springs - to reduce the brush from bouncign when motor is producing higher rpms.

Not that familiar with that charger, but should charge battery pack proplerly if you use the right detect setting .03mv for Panasnics, .05 to .07mv for Sanyo and GP type NiMh cells. If that is voltage at peak charge it sounds like they are Panasonic type NIMh - they never really reached much above 9.35 volts while other NIMh generally reach 9.42 to 9.48 volts at peak.