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Which one is faster, 1/8 or 1/10 ?

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Which one is faster, 1/8 or 1/10 ?

Old 03-27-2013, 09:09 AM
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Default Which one is faster, 1/8 or 1/10 ?

Hello everyone
I'm totally new to this hobby. I want a e-buggy, but still can not decide between 1/8 and 1/10.
I want a fast one. Which scale has the potential to go faster? I do not care about durability.
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Old 03-28-2013, 12:24 AM
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the 1/8th has the capability of holding physically higher cell batteries and therefore the potential to go much faster.

1/10 is predomenantly 2 cell lipo = 7.4V
1/8 can be from 3 cell to 6 cell.. = 11.1V to 22.2V (I use 4 cell = 14.8V)

the KV ratings given on any motor indicate the rpm/volt..
1/10 motors have a much higher KV rating, but can only be supplied from the lower voltage. 3800kv+
1/8 motors have a lower KV 1800 - 2800KV... but some easy maths and you quickly figure which one will go faster.

Be careful though.. because where there is higher rpm there is more heat.. and heat is the devil.

from memory.. a 1/8 scale driveline should max out at about 35000 rpm (please jump in and correct me) to ensure A) you dont burn out anything B) batteries last long enough. anything lower is better for run time, but there is a too slow which loads up the motor more generating again more heat.

i am running as mentioned 4 cells and using a 2300kv motor.. therefore 34040 rpm.. if you want more cells, a lower kv motor is recommended.. and reverse if you use less cells.

OH... and 1/8 is much more durable, but deadly in the wrong hands.
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Old 03-28-2013, 03:10 AM
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Wow, thank you Stangas.
Those information are definitely helpful.
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Old 03-28-2013, 04:10 AM
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1/10 scale hands down.. drop a 4.5T brsuhless and say bye to any 1/8 scale buggy..dont care how many cell u put on a 2200kv.. can not touch a [email protected] 2 cell..

Heres your easy math..LOL

8.4v X 9000kv=75.600 rpms
6 cell=25.2v x 2200=55440 rpms wow thats 20,000 rpms short then add the low gear ratio and ur even less rpms..

simple math..gotta love how the auzzy add.. NEGATIVELY..

get real auzzy .. 1/10 is faster by far....2x faster


1/10 scale the fastest..
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Old 03-28-2013, 04:30 AM
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We've got Nitro buggies running 42000 RPM as verified with a sonic tachometer, and I know one of those guys doesn't do much for maintenance on his buggy. NBuggies and EBuggies are often the exact same drivetrain from the center diff to the wheels, so I would assume that an eBuggy, if anything, should be able to go faster since there isn't the vibration of the nitro motor to throw everything off

If you don't care about durability, I would assume that the drivetrain on these little guys should be able to double that, just expect to break stuff almost every time you go out.


The math is all theoretical... it assumes no load. Once you start loading up a 9000kv motor with 4lbs of buggy, it won't be able to hold 75000rpm (and same when you put 8lbs of buggy on 50000rpm)

the 8th scale will be able to handle the little bumps and cracks that most streets and blacktops have without tossing it around, AND it will be just as fast. The 10th scale cars will be quicker, but if you just want top speed, 8th scale will get you there and be easier to drive.

Last edited by BlueGlowBoy; 03-28-2013 at 04:47 AM.
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Old 03-28-2013, 08:18 AM
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its the difference between quick and fast.
a 1/10 buggy will be very nimble and quick on a racetrack. however the 1/8 will be a total powerhouse. will out accelerate just about anything. and absolutely wilk out corner a 2wd buggy. regardless of the motor.
the 1/8 will be more durable as a beginner but more dangerous for everyone around you. the 1/10 WILL make you a better driver until you move up to the 1/8.
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Old 03-28-2013, 09:15 AM
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Originally Posted by hpikillr View Post
1/10 is faster by far....2x faster
Lol.
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Old 03-28-2013, 09:24 AM
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Learn how to drive around a track first and then worry about going fast.

Which is faster depends on the track. On our indoor track, 4wd 1/10 is at least .5 second faster per lap than electric 1/8 keeping the driver the same. The track is large for indoor, but not quite big enough for 8th scale to really lay down the power effectively.

However, outdoors the 8th scales rule as they can deal with the inconsistency of the surface better and the tracks are big enough for them to lay the power down quicker and harder.

An overpowered 8th scale in a newbie's hands is DANGEROUS and why a lot of indoor tracks don't allow them anymore.

If you are just bashing and looking for straight line power out in the street, 8th scale would be better. Easier to setup going fast, durable, and easier to control. I had my rc8 hitting nearly 80mph in parking lot. I couldn't even keep the tires on the rims. (5s/3300kv Neu Motor). With proper setup, you can easily break 100mph.

On the track, most cars never get past 35 mph on the longest straight.
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Old 03-28-2013, 11:40 AM
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Never seen this OP say he was gonna race ..all i read was wants the fastest PERIOD.. maybe if all you people that reply to a post read it 1st then reply this site would have less lame posts like the 2 above.. what a joke.. try reading b4 u put ur Lame posts up..
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Old 03-28-2013, 11:52 AM
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Originally Posted by hpikillr View Post
Never seen this OP say he was gonna race ..all i read was wants the fastest PERIOD.. maybe if all you people that reply to a post read it 1st then reply this site would have less lame posts like the 2 above.. what a joke.. try reading b4 u put ur Lame posts up..
Try graduating high school before you act like you know it all. There is no fastest PERIOD which is what most people are trying to get across. It depends on the situation.
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Old 03-28-2013, 12:04 PM
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Originally Posted by hpikillr View Post
Never seen this OP say he was gonna race ..all i read was wants the fastest PERIOD.. maybe if all you people that reply to a post read it 1st then reply this site would have less lame posts like the 2 above.. what a joke.. try reading b4 u put ur Lame posts up..
You said that "1/10 is faster by far....2x faster"...which is absolutely hilarious.

If you want to get technical...



That is the current record holder for the fastest R/c car. Looks just like a 10th scale buggy.

And like what was said before, your calculations are all theoretical before you put a load on them. It's like comparing a Honda Civic to a Corvette. Yea, the civic might have an engine that can rev to 9500rpm, but who is actually going to win that race

Oh, and the statement, "dont care how many cell u put on a 2200kv.. can not touch a [email protected] 2 cell", what if I run 10s? 42v * 2200kv = 92400rpm.
And poof goes your argument lol.

Anyways on topic, it depends what you are trying to do. 10th scale really is only good (in my opinion) for winter indoor racing. When it gets nice out, 8th scale is the way to go.
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Old 03-28-2013, 12:22 PM
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Thank you everyone for the advises.
I think i will start with a cheap slow 1/10 2wd and practice with it first. When i'm good with it someday i may try out a more powerful 1/8 4wd.

Last edited by Snikch; 03-28-2013 at 12:39 PM.
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Old 03-28-2013, 12:33 PM
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Misinterpreted the question, nevermind.

Last edited by Dave H; 03-29-2013 at 09:21 PM.
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Old 03-29-2013, 03:06 PM
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Ah the old chicken and the egg saga.......use to be nitro v.s. electric......now it's scales.What's next futaba radios are a tenth per lap faster than airtronics LOL!!!!!
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Old 03-29-2013, 07:59 PM
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Last edited by timannnn6; 10-06-2021 at 08:54 AM.
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