your recommendations on 4s lipos
10-01-2015, 09:28 PM
#1
your recommendations on 4s lipos
Like the title says what 4s batteries are you having success with?
This is my story. I want to be able to compete in 15 minute 1/8th scale truggy mains with the nitro guys. Unfortunately googling "best 4s lipo" among other things didn't come up with much besides a review from bigsquidrc and topics that are from 2010
Really can't believe I am unable to find newer topics regarding 4s batteries.
So what have you all had success with? Spill the beans
This is my story. I want to be able to compete in 15 minute 1/8th scale truggy mains with the nitro guys. Unfortunately googling "best 4s lipo" among other things didn't come up with much besides a review from bigsquidrc and topics that are from 2010
Really can't believe I am unable to find newer topics regarding 4s batteries.So what have you all had success with? Spill the beans
10-01-2015, 11:48 PM
#3
Tech Initiate
If you are allowed use 1 x 6S 5000mAh and you should do 15min.
If you want to race with nitro guys and avoid battery changes you will have to get a truggy that has 2 battery trays, for example Serpent and run 2 x 4S or 6S packs.
For example I have HK Basher Sabertooth truggy that comes stock with 2 battery trays. If I use 2 x 4S 5000mAh pack I get about 18min racing run time (depends on track). For long runs I use 2 x 6S 5000mAh and can just barely squeeze 30min on the same track.
Downside of using such large battery packs is weight, even worse that weight is concentrated on the back of the truggy so you have to compromise with the setup and loose some speed. One the upper mentioned track if I run 2 x 2S 5000mAh my lap time is about 31s, and with 2 x 6S 5000mAh (has much more engine power but is also much heavier) my laps time drops to 32s.
So in a 30min run you lose about 60s because of larger batteries but can avoid 2 battery changes. Chose what's better for you and your track.
If you want to race with nitro guys and avoid battery changes you will have to get a truggy that has 2 battery trays, for example Serpent and run 2 x 4S or 6S packs.
For example I have HK Basher Sabertooth truggy that comes stock with 2 battery trays. If I use 2 x 4S 5000mAh pack I get about 18min racing run time (depends on track). For long runs I use 2 x 6S 5000mAh and can just barely squeeze 30min on the same track.
Downside of using such large battery packs is weight, even worse that weight is concentrated on the back of the truggy so you have to compromise with the setup and loose some speed. One the upper mentioned track if I run 2 x 2S 5000mAh my lap time is about 31s, and with 2 x 6S 5000mAh (has much more engine power but is also much heavier) my laps time drops to 32s.
So in a 30min run you lose about 60s because of larger batteries but can avoid 2 battery changes. Chose what's better for you and your track.
10-02-2015, 10:15 AM
#5
Tech Regular
Defiantly check out smc. There packs are awesome and you can't beat the price
10-04-2015, 06:39 AM
#10
That motor will make it hard. I used to make 15 minute mains on a 1700kv & 4500mah 4s. With this setup I was never down on power to any nitro car and the only electrics that could pull me on a long straight couldn't make the turn at the end.
The key is adjusting your ESC to be efficient. Start with your current limiter set at 60% (most can't tell the difference between 80% & full). I also had a good result by gearing a tooth lower and using a tiny bit of timing (4pole motors don't like much). No drag brake and Max brake adjusted as soft as will achieve the stopping power necessary.
The key is adjusting your ESC to be efficient. Start with your current limiter set at 60% (most can't tell the difference between 80% & full). I also had a good result by gearing a tooth lower and using a tiny bit of timing (4pole motors don't like much). No drag brake and Max brake adjusted as soft as will achieve the stopping power necessary.
10-04-2015, 07:57 AM
#11
That motor will make it hard. I used to make 15 minute mains on a 1700kv & 4500mah 4s. With this setup I was never down on power to any nitro car and the only electrics that could pull me on a long straight couldn't make the turn at the end.
The key is adjusting your ESC to be efficient. Start with your current limiter set at 60% (most can't tell the difference between 80% & full). I also had a good result by gearing a tooth lower and using a tiny bit of timing (4pole motors don't like much). No drag brake and Max brake adjusted as soft as will achieve the stopping power necessary.
The key is adjusting your ESC to be efficient. Start with your current limiter set at 60% (most can't tell the difference between 80% & full). I also had a good result by gearing a tooth lower and using a tiny bit of timing (4pole motors don't like much). No drag brake and Max brake adjusted as soft as will achieve the stopping power necessary.
You were running truggy on big tracks? Which model were you running? I'm looking at picking up another motor here soon and was thinking of picking up something a step or 2 smaller on the KV side so will see how this works out.
Work has been good this week so was thinking I'll pick up an smc, protek and a trinity revtech and run some tests myself to see how they all perform. Once I have them I'll get back with some results.
10-04-2015, 06:22 PM
#12
I ran buggy on a medium-large track. Truggy would benefit from the same attention but you'll need a bigger truggy motor & battery.
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