Stealth_RT

iTrader: (5)

1700 would work a lot better on 5S, on an outdoor track. 4S would be OK on a small indoor track.

jhautz

iTrader: (86)

On 5s with the 1400kv motor I have been seeing around 185mah/min burn rates on the decent sized indoor track here (125ft x 65ft). Last summer on the big outdoor tracks it was closer to maybe 200mah/min. Temps are never an issue. Honestly its never even been warm enough to bother getting a temp gun out. I just finger check and its always just warm. Maybe 110-120 degrees.

warpig

iTrader: (7)

jhautz... would you say that a 5S would be the all around ticket for the 1400kv motor? I was planning on getting the 6s but if 5S is good then I should do that setup. I don't need more top end.. I just need applicable torque.

jhautz

iTrader: (86)

On 5s it still gives me more power than I can put to the ground. I tend to like setups that are more to the tame side compared to what some people run. Easier for me to be consistent. Not that its tame. Still as much or more power than the gas cars.

It should be fine on either 5s or 6s. Its just a matter of gearing properly for the voltage you choose.

radwerx

iTrader: (3)

Hmm, Thanks Randy, managed to squeeze in a 16T. So now I'm at 16/40 primary, 11/43 internal. There is some drop in temp for the motor...about 72deg C now after a full pack with short pauses in between. Ambient here is about 32deg C.

How much temp can the T8 actually take? Would like to know how much safety factor I have since I've been quite busy with my temp probe to actually enjoy running the thing.

Finally, my batteries are getting really hot (4300mah, 30C, 4S) after finishing the entire pack. Didn't really temp them but I estimate around 50 degs. Cutoff was set at about 3.5V per cell. Can you tell me if this battery is sufficient for my setup (ie to say the hot batteries are normal, or should I upgrade my Lipos?

Thanks a lot

malik

iTrader: (19)

Jhauts would you compare 5s-1400 to 4s-1700? I hear a few guys using 5s 1400 with sucess. If not I will just have to bite the bullet and get a new 1900. I also dont want to be geared to the moon. 4s 1900 on my car guys are using 19-21t so on 1700 I guess i would have to gear pretty tall maybe 24t?

havatitan

iTrader: (2)

I need some help with high motor temps. Raced the rc8b yesterday, 5S lipo, 1700kv buggy motor, MMM esc, 5deg timing, 21/46 gearing (rc8 has 4.3-1 truggy ratio), radio throttle epa at 90%. 10 min heat race, motor temp 191 deg, esc temp 95 deg. It was about 78 deg outside, the motor also had a heat sink and fan on it. I'm about ready to dump this motor as it just runs too hot, I have tried every thing I can think of to keep it cool with no luck. Am I missing something, any help would be appreciated.

Smoothone

iTrader: (1)

You are geared for around 44mph. Try a 16 or 17T out and see what happens.

jhautz

iTrader: (86)

Cant really compare how it feels vs the 4s setup. Is been a while since I ran 4s in it and never the 1700 kv motor. But I would guess it should feel similar since its a similar total RPM for the 2 setups.

EDIT: I can compare it to 5s - 1900, 1700 and 1550(truggy motor) setups though. With the 1900 and 1700 on 5s I spent most of the time trying to figure out how to tame it out a bit and make it easier to drive. The 1550 truggy motor was also a really nice setup. It actually felt very similar to the 1400 motor and ran super efficient. It might have even used less juice than the 1400 motor. Something strangely magical about that 1550 truggy motor in a buggy on 5s.

havatitan

iTrader: (2)

I've done that, did not help much. Thats why I geared up and turned the throttle epa down to keep the rpm down, but that didn't help either.

terryt

iTrader: (15)

help, i am trying to setup my rx8 with hotwire. I cant seem to get the settings to save to the esc, when i click apply setting then go back and try and pull the current settings from the esc nothing has changed. any help with my operator error would be great. thanks

bohdi

iTrader: (12)

really?
I run 18/46 on the RB8B with the 1900kv and I thought it has been running really well. You think I would be better to try 20 as well?

Smoothone

iTrader: (1)

Anyone know where I can find a Hotwire in stock?

gcosio

you got pm.

killermmn

my setup is 3pm 2.4ghz
2x 5200mah 30c
ace 1015
rx8 1700kv truggy combo