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Old 03-03-2005, 08:14 PM   #1
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Default Mod Motors

I have attached a link to the track I will be running weekly at. They have started a Mod. class, because many have brushless systems. I have been in the stock class for a couple years and still want to be. Along with some events at other tracks.

My question is judging from the pictures what mod motor would be good against the brushless systems. Along with gearing ideas. I have not idea were to start.

And yes I have all the motor maintenance stuff available. Integy Team Cut and Serrator, XIPP Mod motor lathe.

Track I will be running at
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Old 03-03-2005, 08:41 PM   #2
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That track looks tight as he!! You've got enough room to really stretch the cars legs....a 12-13 will do just fine and since its so open and flowing, you can get away with a quad or some heavy wind like that. You're not going to be needing very much torque on a track like that!

I'd say a 12 or 13x3 or 4
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Old 03-03-2005, 08:43 PM   #3
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How about gearing? I have no idea were to start. You think a mod motor could put up a challenge o a brushless on this track?

Is this what you are talking about?
Associated KR 12T Double Modified Motor
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Old 03-03-2005, 08:45 PM   #4
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Brushless are fast....but not as fast as they were originally thought to be. What car are you running?
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Old 03-03-2005, 08:47 PM   #5
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T4 and B4

Signature has specs
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Old 03-03-2005, 08:53 PM   #6
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I'm rollin the Losi's so I honestly don't know what to tell you....check the manual's recommended starting point and work from there. But that track is soo open and flowing, that you'll be gearing for top end rather than torque. So maybe a few teeth up on the pinion than stock and just go by feel.

I sent you a PM....
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Old 03-04-2005, 07:48 AM   #7
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Trinity Cobalt 12T Quad Round Wire Modified Motor

I was doing some looking at different mod motors. A couple questions I have.

1) What do I loose or gain by going up or down on turns?
2) If I were to have the motor above it says for Big Fast Tracks, now if I need more torque what things on it would I change to get more torque?
3) Difference betwwen Double, Triple, Quad mod motors?
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Old 03-04-2005, 07:53 AM   #8
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Have you had any practice with a mod motor? going from stock to full mod and can be quite the transition. When I started out in 4wd buggy, I decided that as most of my experience at the time was with some form of spec racing, I went with my Reedy Quad Mag 19T motor as the power plant.

Against the novak brushless motors being used, I was competitive which was a suprise to alot of people including myself. The motor allowed me to put down the power better than those with hotter motors and also get used to driving at a faster speed. The motor also was great matchup against the novak brushless and had alot of torque to it.

If I was you, I would probably have a a slower motor like a 14T or the 19T I mentioned in my pit box to start off with, and then a 12 or11T for when I need that extra umpf.

Honestly however, at least for 4wd buggy anyway, the Reedy Quad Mag matched up quite well with the novak brushless 5800 unit.
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Old 03-04-2005, 08:00 AM   #9
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Your 19T was holding up with the brushless? That was a Quad right? So a 14T will give me more top speed than a 19T, but have more torque that the 12T? Am I confused?
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Old 03-04-2005, 08:24 AM   #10
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Yes, the 19T did hold up to the brushless units. It may have been do to the type of vehicle I was running ( 4wd buggy ) as I have heard that the novak brushless system performs at different levels in different vehicles for some reason.

At most tracks I went to, I would pop the 19T in as a way to get used to the track at speed but not break anything in the process till I had an idea if I wanted to run a full mod motor.

The lower the turn, the more power you have.

my suggestion for 19T for you is from a perspective of getting used to the transition for the current track configuration. You could start off with a 14 turn or lower, but, as with everything, higher speeds + barriers = broken parts. rather go a bit slower to get around the track, which ironically, is usually faster than the other guys running all out mods as they can't control them or break. Also, if they do change the track, having a motor that is controllable in tighter infields is a plus when there really isn't a lot of long straights.

I had it explained to me that lower turn motors make more overall power, and we compensate for the torque by using a smaller pinion on the motor relative to the turn. Different motors can be based for more RPM or more torque, it depends on what you feel you need. From my experiences, lower turn motors made more torque and RPM all else being equal.

a good place to get your motor questions answered would be www.rccars.com/forum in the Big Jim motor forum area. I would go and ask there to get some clarification as far as how lower turns work versus higher, etc.
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Old 03-04-2005, 04:55 PM   #11
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Quote:
Also, if they do change the track, having a motor that is controllable in tighter infields is a plus when there really isn't a lot of long straights.
We just changed the layout to this in October before he snow started falling.

What have you heard about Cobalt's off-road?
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Old 03-04-2005, 05:21 PM   #12
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Quote:
Originally posted by nwilcox88
What have you heard about Cobalt's off-road?
That they're stinkin fast! At a big race we just had at our track....all the factory guys were running the cobalts and rippin wheelies out of pretty much every freakin corner! I havn't yet run one, but I can say from watching, they are dialed! The blue light is also way trick!
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Old 03-04-2005, 05:29 PM   #13
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What is the difference in Single, Double, Triple, Quad there are four versions of these motors?
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Old 03-04-2005, 05:32 PM   #14
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single has more torque and less top end
quads will have more top end and less torque.

This all has to do with the amount of physical wiring that is packed into the arm. A quad has 4 wires wrapped x times around the arm....a single has one wire wrapped x times around the arm. So a quad will have more to spin, thus less torque and vise versa for a single.
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Old 03-04-2005, 05:49 PM   #15
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for those cobalts that were fast, were they the flat wires or the round ones?
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