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Old 01-03-2009, 10:47 PM   #31
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That 2.5D you got in your truggy is only a 1650kvolt which on 5s is only getting you around 30k rpm. I thought you need to be around the nitro rpm of 40k. Unless you got it geared up. The 1Y is a 2200kv motor. Just what I need.

http://www.neumotors.com/2008/Root/S...0_series_.html
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Old 01-03-2009, 11:03 PM   #32
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naw, between 30 to 35K is good for racing. trust me, my setup is a tad bit faster than a nitro, but WAY MORE BOTTOM END then a nitro!!!

check out this sheet that i made. keep in mind, the larger and faster the motor, the less runtime u will have. u want a happy balance. not to fast where u can't drive it around the track and less run time but not too slow. my truggy setup is my happy medium.

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Old 01-03-2009, 11:12 PM   #33
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check out tekno recommendation. they are the guru's of electric conversion...

http://www.impaktrc.com/product_info...oducts_id=3276
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Old 01-03-2009, 11:26 PM   #34
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I got a 1668kv motor on a buggy. With 5s(30k rpm)/14t pinion it is a rocket. With 6s(37k rpm)/12t pinion(geared down) it's insane. Can't keep tires on it. I'm a noob at brushless/lipo but i say stay in 30k rpm range and gear accordingly.
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Old 01-03-2009, 11:35 PM   #35
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^
|
|

++++ for the newbie
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Old 01-03-2009, 11:42 PM   #36
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OK guys, Gotcha. I love the chart, makes life so simple.
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Old 01-03-2009, 11:57 PM   #37
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here's another one fo ya!!!

http://www.scriptasylum.com/rc_speed/_top_speed.html

u wanna gear it to about 37 to 40 mph

i have my truggy geared @ 16 pinon 46 spur.
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Old 01-04-2009, 08:05 AM   #38
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The Mamba Monster and 2200kv combo is the best bang for the buck in a truggy. The 2200kv motor is actually made by Neu its a 1515. The tekno kit is nice but I don't think you would want to go with mechanical brakes option. once you get the hang of the motor brake will you will become very smooth and fast. I love my 8ight buggy its a ball to drive.
I have only been "converted" for a little while but the zippy-h packs are a good buy. i also bought a losi hard case.

as for 8T vs RC8T that's personal preference both are great platforms.
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Old 01-06-2009, 01:53 PM   #39
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Teeforb and everyone else who posted I appreciate your help even though I was acting stuborn. I am going to get the RC8T Tekno Conversion with the 1515 2.5D which Im pretty sure is the one you have. I will buy 1 5S battey and see how it goes. I like the option of going 6S for more speed. Let me know how you like the 6s when u get it please. Do you have a fan on top of your motor?
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Old 01-06-2009, 02:06 PM   #40
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I have not tried 6s on my setup, but i am sure you can if u wanted that extra speed. yes, i do use a fan, but i don't think it is necessary. i just like running my motors as cool as possible. My temps on my truggy with fan is about 113F. i think the fan saves about 25 degrees.

ima borrow someone's 6s and see how fast is it!!!
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Old 01-06-2009, 02:36 PM   #41
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Oopps. I dont know what your truggy ratios are but for the RC8T. 14/54 Spur/Clutch and Diff at 4.3:1 Its only showing the truggy going 31mph with the 1700kv. I think I need the 2000kv motor to be around 36mph right?

Whats the ratios for your mugen?

Using this motor I did it for a 8T and it comes out to around 36mph. I think the RC8T needs a little more rpm because of the gearing.
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Old 01-06-2009, 02:51 PM   #42
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im sure u can change the gearing instead of changing the motor. i am using a 16T pinion with a 46T pinion. i am sure someone is using a losi T or RC8T with this motor. Look at this thread and see if u can find someone with your same setup.

http://www.rctech.net/forum/electric...elections.html
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Old 01-06-2009, 10:43 PM   #43
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Try this calculator that I made:

Gear & speed Calculator

So in the RC8T a 1515 2.5D (1650/kv) on 5S the 18T or 19T pinion would be ideal with the 54T spur gear. Or (what I would do) you can drop to the optional 50T spur gear and use a smaller pinion so that the motor is closer to the centerline of the chassis. You want to gear for 40-42mph calculated.
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Old 01-06-2009, 10:55 PM   #44
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By the way, nice chart. Sorry for all the trouble guys. Just a lot of money to put down and not get right. I calculated my nitro truggy and they are not as fast as I thought they are.

If you have spare time add a 6S column to that chart and let me know.

Last edited by Speed_Freak_039; 01-06-2009 at 11:27 PM.
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