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7700kv or 9000kv??? HELP!!!

7700kv or 9000kv??? HELP!!!

Old 11-20-2009, 07:10 PM
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Default 7700kv or 9000kv??? HELP!!!

Alright, here is the deal. Im looking to get a Mamba Max motor but im not sure if I should go all out and get the 9000, or just get the 7700. So I was woundering how much of a difference it made going to that big of a motor. If you got any tips please let me know.

Thanks,
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Old 11-20-2009, 07:25 PM
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Dude both of those are way much. If your offraoding dont buy the 9000. Also you cant use 3S if you wanted to with that motor, the 7700 is much also but you have more versatility with that. Lets start here what is the motor going in and what are you using Nimh, 2S, 3S?
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Old 11-20-2009, 10:46 PM
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Either of these motors will be too much for off-road use in most trucks. A 7700 may work in a 4wd buggy, but it will likely overheat with more than 5-8 minutes of runtime. If you are just bashing and want maximum wheelie power the 7700 will be more than enough, but for racing you will be very unhappy you got either of these motors.
Also keep in mind that with either motor choice here your batteries will be your limiting factor once you upgrade your gears and tires to handle the extra power. The 9000 is quite a bit faster than the 7700 on a 6 cell pack. But unless you have the best of the best matched packs you will likely kill them in a few runs. Lipo is almost a must for these motors.
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Old 11-20-2009, 10:51 PM
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Go less kv with more volts I like around 4600kv on a 3s in something like a slash also the velineon 3500kv is really good in a short corse truck.
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Old 11-24-2009, 04:16 AM
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We need to know what vehicle and terrain and size of area then go from there.
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Old 11-24-2009, 01:54 PM
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what car do you plan on putting it in?
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Old 11-25-2009, 12:49 PM
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Originally Posted by jrxsMike03 View Post
Go less kv with more volts I like around 4600kv on a 3s in something like a slash also the velineon 3500kv is really good in a short corse truck.
+1

The 4600Kv is my favorite motor for off-roading. Especially for 1/10th 4wd buggies...
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Old 11-25-2009, 12:59 PM
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I had, repeat- had, the Mamba Max 5700 in my T4. It was just plain stupid uncontrolable. I either spun out or wheelied down the straight of the track, depending on traction, with less than 3/4 throttle. I cannot stress how good the quality of the Castle Creations stuff is though. I would recommend the 4600 like the other poster. That with a 3 cell would be alot for any car unless you have AWD. If you have a 4 wheel buggy the 5700 would be great.
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Old 11-25-2009, 04:25 PM
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i run a 7700KV in my stampede.. its retarded fast.. very uncontrollable yet very fun to drive!.. as stated before you will eat them batteries(NiMh).. LiPo is a must for these.. my motor does get a bit warm.. yet i've never had it overheat.. the batteries on the other hand (NiMh) will implode/explode as stated before if your not careful (ive had experience with this) i've been told a million times that the 7700KV is to high KV for my pede.. but i dont listen.. i also had this motor in a E-Maxx and it too was very fast but got alot hotter then in my pede.. 4wd mt = 2200KV for sure if not lower.. but if its a 2wd mt (pede) i'd run it.. just keep an eye on your temps!!
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Old 11-25-2009, 04:30 PM
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Neither, those motors are too powerful to put in anything you want to control. I'll assume you're putting them in a stadium truck and recommend a Novak Havoc Sport 8.5. More than enough motor to have fun and race with, reliable, and easy on both the wallet and your batteries.
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Old 11-25-2009, 05:25 PM
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i just got my 6900kv today for my wheely the only batteries i have are 8.4v 3000 mah duratax i have the truck geared low like a 18/96 and with castle link i can take out some timing to calm dowm the rpm,s and reduce the motor temp
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