Pulse_

Hello,

I want to change my castle combo (2200kv, 4S) and go for a lower kv motor.

What would be the main differences between 1550kv motor with 5S lipos and 1350kv motor with 6S lipos?

What is the most efficient?

Thanks!

TC3MIKE

Most people would say higher voltage and lower KV will run cooler and maybe longer. So 6s is most efficient.

Pulse_

Ok! Do you get enough top end in 1350kv & 6S? I live in France and the tracks are faster than in the US

Edumakated

iTrader: (19)

Both are great setups for a truggy. Having run both extensively, the 6s/1350 is the best though imho. Very efficient. Both have more top end than anyone needs on the track. If you need more speed, just gear up. I just know nitros don't even think about trying to hang with me on straights if I gear up.

Pulse_

The thing is I run fast European tracks, not the same as "slow" US tracks with lots of jumps. I just cancelled my order for the 1350kv because I'm still hesitating between 1550 and 1350 kv in 6S. Very hard to decide. Is there any European racer out there?

Edumakated

iTrader: (19)

None of the tracks I race on are "slow". Most have 200 foot long straights where you can really open the car up full throttle. 6s/1350 is like 31,000 rpms. You can set the car up to go faster than any driver or track can handle - supercross jumps or no jumps. You will have more top end speed than you have skills to deal with.

I have used both extensively. They both get the job done but the 6s/1350 is noticeably more efficient.

miquelmah

iTrader: (5)

1500kv + 4s = perfect........... more s is crazy for my opinion


http://www.rctech.net/forum/electric...ml#post7734482

Pulse_

How are you geared in 6s 1350kv?

Looking at this, the 1350kv/6S combination isn't meant for large tracks so I don't know who to trust as I can't compare them myself:
http://forum.teamtekin.com/phpbb3/vi...hp?f=38&t=2411

Rick Hohwart

Most people racing 1/8 E are way overpowered. I'd would realistically say that 95% of the club racers I have raced with would go faster if they reduced power.

In Europe the tracks can be big but I also feel that they can get very rough and/or slick. I would set yourself up to be comfortable in the infield even if it means losing a little speed on the straights. You will ultimately turn faster lap times.

TC3MIKE

Take Rick Hohwart's advice if you don't believe us.

hontrx265r

iTrader: (5)

I actually have the same mmm 2200 in my buggy and had been using the same in my truggy. I pulled everything from my truggy and ordered a tekin 1550kv and new 6s from turnigy. Looking for good runtimes and a blazing fast setup. I haven't tried it out yet but when I get it setup I'll give you the review. Nice thing about the 1550 is you can probably run anything from 4s-6s and make a good setup depending on the track

redindian

Hi
I've been running a 1350kv with 6's set-up, gearing 13/43 and it's a great set-up. More than enough power/top-end etc. Truggy will pull wheelies from standing start. Easy on esc etc.
Recommended set-up on Losi 2.0T
regards
Jaz

Edumakated

iTrader: (19)

It is all subjective. Electric motors have a ton of torque so many people have found you can run on the lower end of the typical recommended RPMs and gear up if you need more top end.

My home track is one of the larger tracks in the country (Leisure Hours 2009 ROAR Nats Track). I have zero problems keeping up very fast modded nitros on our long straight. Truthfully, I could destroy them at half throttle if I set my car up to do so (just gear up a couple of teeth), but that kind of power usually doesn't translate to faster lap times.

Slow = Fast. Both the 5s/1550 and the 6s/1350 are ideal for truggies and offer very good run times. You will spend more time trying to slow both setups down versus trying to figure out how to get more power.

Remember, electrics accelerate about 2x's as fast a nitro. Even if a nitro has more top end than a mild electric setup, the electric will still out accelerate the nitro and most cases you won't have a straight away long enough for the nitro to really pull you even if your top end is slower.

Pulse_

I totally agree with all what you say. Slower is faster and I also think that most of the people would be faster with a slower car, with no doubt. I know about what you're talking.

During my second race I had to stay slow because I wanted too keep the same lipo during all the final. Result: I managed to run my car during 20 minutes with the same lipo (5000mah 4S) with my 2200kv motor. I finished 3rd -I began the RC this year-. I drove with almost worn out tires from the beginning to the end, and didn't even touch any setup. Clean and slow driving is definitely the way to go.

Is there a big difference of smoothness between the 1350kv and 1550kv motor in 6S? Is it really noticeable?

You're right concerning the top end, it's not there that I will gain time. I ordered the 1350kv and just had a sudden doubt and came back on my choice when I read the reactions of many forum members here in France. They are all for the 1550 in 6S when you're all for the 1350. Thanks a lot for your patience

armourbl

iTrader: (44)

Personally, I go with the 1350kv motor from these guys are saying. If you run on 6S, you'll longer run times with lower mAh packs, cooler temps on the motor and ESC, and you'll be able to gear to whatever speed is best for your conditions.

Both my buggy and truggy have 2200kv setups running on 4S. If I decide to get serious about racing competitively, I'm going to have to make an investment in a 6S setup with a low kv motor so that I can get the run times I need to run with the Nitros without needing to do a battery swap.

If you are buying this for your 12 hour race, then focus less on top speed and more on consistent laps with long run times. In a 12 hour period, the guy or gal who crashes the least amount of times will likely win, not the fastest driver.

ben