Runtime.....question using 4s?

[jzemaxx]

Hey guys I need to be able to make a 20min main with my buggy. I just started running buggy a few races ago, but all the races are 10min or less. I need to run 20mins now in the Pro class this upcoming year a few times. I currently run a MBX6E with the MMM 2200 setup. I run 4S 5000mah zippy setup and easy to do 10mins...but not sure how long it will go. I think I may try the new zippy 4S 5800mah and see if that will make 20mins. You guys think its possible?? What 4S setups are some of you running making 20mins??

[Patrick]

How much do the pack take back when recharging after the 10 min race?

[SpEEdyBL]

My 8ight/Tekin 1900 gets 28 min on a 4s 5000 mAh pack on an indoor clay track. During a 15 minute main w/ practice laps, i used a 4000 mAh pack which took back less than 3000 mAh after the main.

With the same setup on a large outdoor dirt track, i get 19 minutes of runtime with a 4s 5000 mAh pack. During two 30 minute mains w/ one battery change the 5000 mAh packs took a combined 6200 mAh each time with 1st and 2nd place finishes.

Your motor choice will really make a difference. Before I ever raced I used to run the 2650 and it would drain batteries in 2/3 the time just doing practice laps.

[Rampokker]

I don't think you'll make 20 mins on that setup. I'm running the same setup with turnigy 4s 5000mah batts and get around 16 mins. I also don't think the extra 800mah from the 5800 batts are going to make enough of an improvement. You may have to look at a lower kv motor. Have a look at how much mah the batt takes after a 10 min race, and then you'll be able to work out how much more mah you need to get 20min.

[brushlessboy16]

I can make 15 minutes on a big open track on 5000mah.. you should charge up your pack and run a certain number of minutes to calculate your milliamp usage so you know exactly how much battery you need

[E-Revonut]

Your usage is going to depend alot on the track, your gearing, and your trigger finger! In my truggy, bigger Nd heavier vehicle, running 5s 4500mah I can easily do a 15 minute main with a decent finish and geared for about 35 which was still enough to pull away from the big Novarossi motors. if I pushed hard and drove like a maniac I would be dead in about 12 minutes though. In my old revo I did 17 min on a 5s setup and only used about 3800 mah and managed a second place finish in the pro series race.

[jzemaxx]

Here is the track.....need to make 20mins on it with a buggy....minimum. Track is fairly open and fast and long.

http://www.youtube.com/watch?v=nyVMUJDgd_M