30 Min Run times in E truggy ?
#16
R/C Tech Elite Member
iTrader: (114)
Last year we were running 15min mains and anyone with less than 7000mah struggled to make 15. This year we run 10min, so it's a non issue. Even with my e buggy, I would struggle to make 15min with my CRC 5300mah packs. For instance, the past Friday I did 2min of warm ups, finished the main (10min) and only had enough battery for 2 more laps. Granted I didn't crash once or need to get marshalled.
You just have to adjust your driving at times. Two minutes of warm up is definitely not going to help. For a long race I wont do any warm up at all.
#18
Tech Elite
iTrader: (27)
Really? A year ago I was in a 15 min nitro buggy race using my 5600mah lipo. Came in second and I still had enough juice to easily make 20 minutes if I had to.
You just have to adjust your driving at times. Two minutes of warm up is definitely not going to help. For a long race I wont do any warm up at all.
You just have to adjust your driving at times. Two minutes of warm up is definitely not going to help. For a long race I wont do any warm up at all.
#20
Tech Elite
iTrader: (6)
I have driven my RC8 in many 15 minute races and a 4S, 5000mAh pack has always had enough power to make it to the end. I run a Tekin RX8 with the 1900 or 2050 motor. Castle and Hobbywing controllers give me less run time for what appears to be similar settings. Truggies seem to work better with 5S or 6S setups. 5S with a Tekin 1550 motor was popular in one club I used to race with.
I agree that courtesy pitting is dumb. The nitro guys have 5 times more energy in a single tank of fuel than we have in a 4S, 5000mAh pack. Maybe they should try to make their engines a bit more efficient!
I agree that courtesy pitting is dumb. The nitro guys have 5 times more energy in a single tank of fuel than we have in a 4S, 5000mAh pack. Maybe they should try to make their engines a bit more efficient!
#21
R/C Tech Elite Member
iTrader: (114)
I have driven my RC8 in many 15 minute races and a 4S, 5000mAh pack has always had enough power to make it to the end. I run a Tekin RX8 with the 1900 or 2050 motor. Castle and Hobbywing controllers give me less run time for what appears to be similar settings. Truggies seem to work better with 5S or 6S setups. 5S with a Tekin 1550 motor was popular in one club I used to race with.
I agree that courtesy pitting is dumb. The nitro guys have 5 times more energy in a single tank of fuel than we have in a 4S, 5000mAh pack. Maybe they should try to make their engines a bit more efficient!
I agree that courtesy pitting is dumb. The nitro guys have 5 times more energy in a single tank of fuel than we have in a 4S, 5000mAh pack. Maybe they should try to make their engines a bit more efficient!
#22
Courtesy pitting was never a problem for me. I had trouble with clueless/oblivious turn marshals that kept thinking my car was a nitro that had flamed out. More than a few times a marshal would pick up my car and start heading back to the pits. I guess the lack of a pipe or big cooling head didn't faze them.
#23
Low kv and 6x cell is the way to go..ran a 1350 kv motor with 5000 6xcell a few yrs ago in losi truggy and easily got 20 minute race time so probably with bigger mah batteries available now with right gearing 30 minutes acheivable.
#24
One of my buddies just ran with the nitros with his tekno et48. Tekin rx8 v2 2250kv v2 and smc 6500mah 4s. We made a battery swap at 19mins. I swapped his battery in 25secs. He won with a 2 lap lead over 2nd place. The motor after 30min was 170° on a big outdoor track. The nitro guys say it takes about 10 secs for a pit stop so we had 5 sec on them for pits. That's not going to change a 2 lap lead.
30min is almost impossible on ANY normal voltage. With a 4s setup you are going to use about 325mAH/min with a 6s setup you'll be at 220mAH/min all assuming good setups and pretty efficient driving on outdoor tracks. So for a 4s setup to reach 30min you will need a 10,000mAH pack, for a 6s setup you'll need a 6600mAH pack. These are HUGE lipo's and will impact how well you can drive your vehicle, and I do mean HUGE and cost a bunch. So all considering your best bet is a quick pit with a couple guys to swap a pack and forget about 30min races on 1 pack. 20min races are easy.. 6500-7100mah should do it and a nice on 4s and 4500mah 6s pack will do it no prob. If you race 30min that is 2-3 pits for nitro's at 5-8 sec each so you'll you'll easily loose 1/2 a lap or a full lap to do a battery swap depending on who is doing it and how well you are setup for it.
Your ESC, Motor and lipo should never over heat from this extended racing... if it does there is something wrong... gearing binding something or simply the wrong equipment or connections.
#25
I would like to see 30min A mains for ebuggy and etruggy. I don't think its out of reach.
#26
Tech Elite
iTrader: (105)
I usually put back 4100mah into my son smc 6500's,tekin 1900 after a 10min main..racing against guys like drake, king ,moeller in the pro class..thats in buggy...a really fast pro driver can not get that much run time(20min),no matter how smooth they are..there is too much pressure from other drivers to be conservative...at a fast pace,I think we can only do 15mins safely.. too big a pack and you will be way off balance
#27
Tech Regular
I run 6500 4s SMC packs with 1900kv geared correctly in my XB8E and my old XB9E, 808E and Losi 8E 2.0 and maybe 15-18 minutes tops. 30 minutes isn't gonna happen and those that are getting 30 wouldn't come close to being on pace in a race. I have ran all kinds of packs and it's not gonna happen on 4s.
#28
what about uesding duals 8000 lipos that maybe come closed
#29
For the guys wanting to 30min run times, why do you what to run that long? If it's to run with the nitros you will have to pit weather you change a battery or not. Why not just do a battery change? Time yourself on changing your battery as fast as you can. You will be surprised how fast you can do it.
#30
I usually put back 4100mah into my son smc 6500's,tekin 1900 after a 10min main..racing against guys like drake, king ,moeller in the pro class..thats in buggy...a really fast pro driver can not get that much run time(20min),no matter how smooth they are..there is too much pressure from other drivers to be conservative...at a fast pace,I think we can only do 15mins safely.. too big a pack and you will be way off balance