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Old 10-08-2009, 06:40 PM   #1
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Default Is 2 hours possible? (Lipo receiver pack run time)

So I got a lipo receiver in the Mugen. The last race I ran it was a 20 min main and I only used 300mah and its a 2020mah pack!! And that also includes some warm up time and a few practice laps, but lets say 20 minutes b/c its a easy number to work with.
So if I use 300mah in 20 min then that means I will only use 900mah in 60 minutes and 1800mah in 120 minutes. I just dont remember whats the deal about running the lipos down so low.
Reason I am asking is b/c I am gonna be doing a 5 hour (thats right, 5 hour) truggy endurance race. 1 team of 4, one chassis. Not having to come in for 2 hours for a battery change would be amazing!
So my question is, do you guys remember how low I can run the lipo?
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Old 10-08-2009, 06:42 PM   #2
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i run 3 quals and a 30+min main and practices on my 2000 lipo, and still have some juice...so i think you would be fine
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Old 10-08-2009, 06:52 PM   #3
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I would not test that theory if it were me. If it does dump that could be very bad news. In a five hour race what is 45 seconds to replace a battery worth?
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Old 10-08-2009, 07:00 PM   #4
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i'm about to do a 3hr enduro in 2 weeks and i plan on doing 2 packs, 90mins each... my packs are only 1600mah..
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Old 10-08-2009, 07:12 PM   #5
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I would not test that theory if it were me. If it does dump that could be very bad news. In a five hour race what is 45 seconds to replace a battery worth?
Oh I totally agree, but it takes longer then 45 seconds to change the pack, i think. Im probably gonna do 100 minutes each.
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Old 10-08-2009, 07:18 PM   #6
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My first enduro was 2 hours and we used one 1500mah but it dumped on the last lap... lol 100mins on a 2200mah should be no prob.
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Old 10-08-2009, 07:27 PM   #7
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I have a Losi 2000 and wouldnt hesitate to go 2 hours based on what I've done so far (usually peaks around 2150-2200).
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Old 10-08-2009, 07:51 PM   #8
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Just put the largest lipo you can fit in your radio box in. Get a y cable to connect anoother one in parrellel and stick it to the side pod or something.

Plenty of room on my chassis for extra lipos. I could probally squeeze 3000mah into the car before things got silly looking.

That way you won't have to stop to switch batteries.

It deosn't have to be pretty. Its only going to be like that for one race.
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Old 10-08-2009, 09:07 PM   #9
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Quote:
Originally Posted by portyansky View Post
So I got a lipo receiver in the Mugen. The last race I ran it was a 20 min main and I only used 300mah and its a 2020mah pack!! And that also includes some warm up time and a few practice laps, but lets say 20 minutes b/c its a easy number to work with.
So if I use 300mah in 20 min then that means I will only use 900mah in 60 minutes and 1800mah in 120 minutes. I just dont remember whats the deal about running the lipos down so low.
Reason I am asking is b/c I am gonna be doing a 5 hour (thats right, 5 hour) truggy endurance race. 1 team of 4, one chassis. Not having to come in for 2 hours for a battery change would be amazing!
So my question is, do you guys remember how low I can run the lipo?
I have a protek regulator with mine and it has an led light that stays green while the charge is good and the paper work that come with it says it while trun red at 6.2 volts or lower. I take it that at around 6.0 volts that it may dump at anytime. hope this helps
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Old 10-09-2009, 01:33 AM   #10
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we just ran a 4hr enduro - 2200mah lipos, 1 ERG-VB + 1 PS2173, no issue running 2hrs on each pack.

If you're running 3hrs you need to changes tires + filter anyway, one guy can do these while the other one does the RX pack.

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Old 10-09-2009, 03:22 AM   #11
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i use about 900 in a 40 min main on a 2200 lipo and i run 2 x ace servo so an hour is fine but 2 i don't think i would like to be trying that as i hate run a ways
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Old 10-09-2009, 05:29 AM   #12
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Quote:
Originally Posted by v1r killer View Post
i use about 900 in a 40 min main on a 2200 lipo and i run 2 x ace servo
Something's wrong with your setup... 1.4A average is too much. Check endpoints, binding steering, and carb return force.

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Old 10-09-2009, 05:36 AM   #13
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Quote:
Originally Posted by Lonestar View Post
we just ran a 4hr enduro - 2200mah lipos, 1 ERG-VB + 1 PS2173, no issue running 2hrs on each pack.

If you're running 3hrs you need to changes tires + filter anyway, one guy can do these while the other one does the RX pack.

Paul
Could you try useing extra foam prefilters on top of eachother and just tear them off?

Unless your on blu groove the tracks going to get fluffy. Shouldn't a set of medium compound I-beams last 4 hrs? Crossbraces?
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Old 10-09-2009, 06:20 AM   #14
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Quote:
Originally Posted by jpalessi View Post
i'm about to do a 3hr enduro in 2 weeks and i plan on doing 2 packs, 90mins each... my packs are only 1600mah..
no gas blast?
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Old 10-09-2009, 07:34 AM   #15
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Quote:
Originally Posted by Zerodefect View Post
Could you try useing extra foam prefilters on top of eachother and just tear them off?

Unless your on blu groove the tracks going to get fluffy. Shouldn't a set of medium compound I-beams last 4 hrs? Crossbraces?
we had a enduro race couple months ago here in az at the pit and a pair of drivers ran m2 calipers and they looked brand new when they were done.

i have about 3.5 hours on a set of m3 calipers. there is wear but they still hook up great
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