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Old 12-07-2009, 09:56 AM   #91
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Can we use creep to counteract the drag brake somewhat?

I'm gonna be at the track twice this week trying to figure it out.
I did not notice any more drag effect in the 17.5 when I ran it. I think different speedo and radio setups are making the motor react differently. As I wanted more drag brake when I made the adjustment a small adjustment was really a large one.

I personally never use creep in any of my cars but I think this is all personal preference.
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Old 12-07-2009, 11:51 AM   #92
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I had mentioned in the other thread about release date for SXX StockSpec: http://www.rctech.net/forum/6526945-post810.html

Obviously it is december now... but as I mentioned in my previous reply, there may be small delays due to component shortages!
As it looks right now we start shipping SXX StockSpec to distributors and shops in mid/late January.
Alright.

And what about the heat sink deal? Will it be like the TC spec speedos where its attached to the fet's. Or like the SPX or sphere comp where you can put it on if you want it on?
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Old 12-07-2009, 03:16 PM   #93
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Hi Guys,

For top end racing, is it still adventageous to run a heatsink/fan on the new Stock Spec X12's? They seem to have fairly substantial air vents which Im concerned about blocking.

Also of note is that mention in the motor manual of not using profile 7 or 8 on the SPX with these motors. Interesting.

Cheers

Last edited by Lycan; 12-07-2009 at 03:29 PM.
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Old 12-08-2009, 08:20 AM   #94
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Is anyone using the new speed passion 17.5 with the spx speedo If so what would be a good starting point for my fdr. I was running the Trinty at 5.49
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Old 12-08-2009, 08:30 AM   #95
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What is the difference between the SXX and SXX TC version other than able to run mod motors. If I am running TC with 13.5... Do I need a SXX TC spec or will the SXX suffice? Any programming differences between the two, different features?

I currently have an SPX.----------

Nevermind... Found what I needed on LRP.cc

ran over to my lhs and picked up a SXX.

Last edited by Chris Furman; 12-08-2009 at 11:45 AM.
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Old 12-09-2009, 11:49 AM   #96
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Sean,

Do you have a place to start with an X12 17.5 and SPX for 12th scale. Speed controls setting and rollout. ........Thanks
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Old 12-09-2009, 12:16 PM   #97
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Took my X12 out, I too found it had way too much cog. The car was immediately better and faster.
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Old 12-09-2009, 12:47 PM   #98
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Took my X12 out, I too found it had way too much cog. The car was immediately better and faster.
What cogging, like sensorless ones, are you serious?
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Old 12-09-2009, 01:03 PM   #99
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What cogging, like sensorless ones, are you serious?
Sorry, I mean mechanical cog. When I'm off power, the motor causes a ton of drag brake which sends all the weight of the car on the nose and makes it swap ends. It's worse than an old 27T brushed motor.
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Old 12-09-2009, 01:11 PM   #100
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Originally Posted by syndr0me View Post
Sorry, I mean mechanical cog. When I'm off power, the motor causes a ton of drag brake which sends all the weight of the car on the nose and makes it swap ends. It's worse than an old 27T brushed motor.
There's your problem. Don't lift.

Actually, would some "push control" (opposite of drag brake) help this issue? Basically, applying a small amount of throttle to counteract the natural drag braking action of this motor? The Tekin RS family has a setting for this.

Speaking of the Tekin RS, has anyone run this motor (17.5) with the RS? What kind of rollout compared to a Duo1 seems to be working OK?i
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Old 12-09-2009, 01:16 PM   #101
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Sorry, I mean mechanical cog. When I'm off power, the motor causes a ton of drag brake which sends all the weight of the car on the nose and makes it swap ends. It's worse than an old 27T brushed motor.
Uhm, strange.
You really meaning happened in LRP esc, in fact i feel the brakes of this make of ESC is little bit weak, compared with other makes, what a strange.
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Old 12-09-2009, 03:04 PM   #102
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Uhm, strange.
You really meaning happened in LRP esc, in fact i feel the brakes of this make of ESC is little bit weak, compared with other makes, what a strange.
I wonder if it has to do with the timing the esc 'happens' to be at when you hit the brakes.
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Old 12-09-2009, 03:08 PM   #103
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I guess what I mean is when I get out of the throttle, the car slows down more than normal since the magnet is very strong, sends too much weight forward, and makes the car swap ends. I tried all night to cure it with setup, and finally gave up. Put the DUO back in and the car was faster, and didn't spin out.

As for as not lifting, I haven't quite mastered that in 13.5 just yet, especially at the end of a 100' straight.
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Old 12-09-2009, 03:48 PM   #104
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Quote:
Originally Posted by Chris Furman View Post
What is the difference between the SXX and SXX TC version other than able to run mod motors. If I am running TC with 13.5... Do I need a SXX TC spec or will the SXX suffice? Any programming differences between the two, different features?

I currently have an SPX.----------

Nevermind... Found what I needed on LRP.cc

ran over to my lhs and picked up a SXX.
For 13.5T I would use the SPX (or the new SXX Stockspec coming soon).
(The SXX/SXX TC does not have stock programs unlike the SPX and the upcoming SXX StockSpec)

...
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Old 12-12-2009, 11:13 PM   #105
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Hi I just got my X12 17.5 and was wondering would it be better to run a higher roll out and lower final drive since these motors have alot of talk
or should i run a lower roll out and change spurs to get my final drive down around 4.0
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