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Old 05-07-2007, 06:07 PM   #1
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Default Just ordered LRP comp/5.5 brushless combo for xx4

I run a Cavaleri 11x1 in my xx4. I'm very comfertable with it. I just ordered a brushless setup. My question is gearing the motor. I now run 86/17 for my ratio. (small track) What gearing should I try on this thing? I never use this car for backyard bashing. Only sees a track. I accually wanted the 6.5 setup, but it doesn't come with the comp speed controler. I figured that I can de-tune this motor to be managable.
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Old 05-07-2007, 07:32 PM   #2
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Doug,
Buy a 6.5 motor......I dont think you can de-tune the motor enough. The 6.5 has a ton of power. The optional "Sintered Rotor" makes it feel like a brushed motor.
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Old 05-07-2007, 08:19 PM   #3
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The 6.5 is the motor that I want, but knowone has a 6.5. I guess I'll have to wait for the motors to come in. I'll bust a few A-arms wile I learn.
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Old 05-07-2007, 08:24 PM   #4
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I run a GTB/sintered 5.5 in my XX4 geared at 15/84, I could probably gear up with no problems if I needed. The LRP should be pretty close to the Novak stuff.
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Old 05-10-2007, 07:33 AM   #5
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i'm running the 7.5 in a buggy.. what's a safe temp for the motor? thinking about going up a tooth, the esc doesn't get hot, the motor is pretty warm though.
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Old 05-10-2007, 07:51 AM   #6
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Quote:
Originally Posted by dan r
i'm running the 7.5 in a buggy.. what's a safe temp for the motor? thinking about going up a tooth, the esc doesn't get hot, the motor is pretty warm though.
I try to never gear over 130 to 140 degrees with any motor.
Perfect performance range with any electric motor.
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Old 05-10-2007, 08:47 AM   #7
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140 is a good limit. I think it will thermal at 180, I know mine runs at 165 on big outdoor tracks on a hot day.
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Old 05-10-2007, 01:54 PM   #8
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Quote:
Originally Posted by Dougg
The 6.5 is the motor that I want, but knowone has a 6.5. I guess I'll have to wait for the motors to come in. I'll bust a few A-arms wile I learn.
I've been running an Lrp Comp. in my B4 for a while, and just moved it into my BJ4 last week. I have been running the old Neo One Three Star, it's a 6.5. It seemed just slightly over powered in 2wd. Not bad though. My advice would be to find one of those. It'll be cheaper and I know they are available.
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Old 05-12-2007, 10:56 PM   #9
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Ok! 12/86, that is the gear ratio I ended up with. I feel that I need to drop to a 11 tooth pinion. Or has anybody tried an 88 tooth gear? I had to do some dremal work to the chassis to get the 86 tooth gear in. THe 12 tooth pinion is very noisey. I thought that the brushless would feel completly different. It doesn't,,, I don't run drag brake in mod brushed. But, I was told that I will need to run some with the brushless to feel the same. I didn't need any. It feels completly the same as brushed. I didn't find the 5.5 difficult to drive at all. I thought that it would be too much motor for me. Not at all. Motor got to 133 degrees, the speed controler never got over 130 degrees. I think it is geard right, but I want a little,, little more punch. I'm going to try to get the 88 tooth in. Will see what comes of this. Thanks for the input.
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Old 05-13-2007, 10:21 AM   #10
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Dougg, I would attempt to actually gear up a bit. The torque on brushless motors is different (in my opinion) and can take more gear. I run the GTB/6.5 in my XX4, and I am geared 20/84. Has enough punch to clear everything, and ballistic top speed. I have never thermalled, and run in the 100~120 temp range (on my temp gun anyways).

In my Academy SB V2 (same internal ratio as the XX4), I run a Mamba Max 4600, geared 19/78. Very punchy still, and great top end.

I personally have found that my older batteries are way to "soft" to run brushless, no punch, no top end, poor performance. But when I use them with a brushed set up, the difference was minimal. When I drop in my new 4200's, hold on.... The motor wakes up and delivers.

I will attempt to contact one of the guys I race with, he runs a 4.5, 5.5, 6.5 in his XX4, and uses the 86 spur. His car is always punchy and tons of top end. Funny watching him drive around Truggies on the big tracks.
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Old 05-13-2007, 10:54 AM   #11
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I would like to hear what youre friend uses. I started with a 16 tooth pinion, (same as my 11x1) The motor had nothing. If there was a 100 foot straightaway, it would have been perfect. We only have a 30 foot straight. My batterys are 1.24's 4200's. I then started to go to smaller pinions from there. I would like to hear your friends setup. My 11x1 was a little faster, I have a motor tunner that gets it to act like a 8 turn. So I was expecting the 5.5 to feel the same. Oh well. let me know about youre friends info.
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Old 05-13-2007, 02:55 PM   #12
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I just got off the phone with him, for the 4.5=13, 5.5=15, and 6.5=18. Our straights are quite a bit longer here in southern cali, so maybe your 12t is good.

Batteries like that should sling the tires off the wheels!
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Old 05-13-2007, 06:01 PM   #13
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thanks
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Old 05-13-2007, 07:31 PM   #14
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tell us if you get it and where did you order it and

good luck cuz i still cant get one

x11 007 combo 5.5

in my zx-5 i run 17-78 with a mamba 5700 (like a 9t)
and i think the 5.5 is like a 9t too.
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Old 05-13-2007, 10:22 PM   #15
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https://www.ssl-stormerhobbies.com/c...ns&pn=LRP80598

Stormer hobbies has 5 in stock. It was the comp 07.
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