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Old 01-22-2009, 07:34 AM   #1
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Default 1/8 E RUN TIMES / RACING E WIH NITRO ISSUE

Hi there, this thread is concerning racing 1/8 E with 1/8 fuel in 30min or longer mains if you don't have enough E's to run as their own class.

Instead of reading through all the threads searching for info pertaining just to this topic, figured it was easier to start a thread.

The main issue concerning running E with Nitro is managing pitting fairness.

* Can an E run an easy 30min or will there need to be 1 batt change?
* How long does it take to change a battery in a hurry.

If you have witnessed or have experienced running 1/8 Es with nitro's, please comment.

Last edited by Leopard1; 01-22-2009 at 07:45 AM.
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Old 01-22-2009, 08:42 AM   #2
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Originally Posted by Leopard1 View Post
Hi there, this thread is concerning racing 1/8 E with 1/8 fuel in 30min or longer mains if you don't have enough E's to run as their own class.

Instead of reading through all the threads searching for info pertaining just to this topic, figured it was easier to start a thread.

The main issue concerning running E with Nitro is managing pitting fairness.

* Can an E run an easy 30min or will there need to be 1 batt change?
* How long does it take to change a battery in a hurry.

If you have witnessed or have experienced running 1/8 Es with nitro's, please comment.
You will have to do a battery swap. No setup will run 30 minutes reliably under race conditions without a battery swap. I would set the car up so you can reliably run 15 minutes under race conditions and do the swap at the 15 minute mark.

It takes about 20-30 seconds to do a battery swap. The tracks I have raced at generally will just let that count as your pit stop since it is equal to about 4 or 5 nitro pit stops.
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Old 01-22-2009, 09:12 AM   #3
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You will have to do a battery swap. No setup will run 30 minutes reliably under race conditions without a battery swap. I would set the car up so you can reliably run 15 minutes under race conditions and do the swap at the 15 minute mark.

It takes about 20-30 seconds to do a battery swap. The tracks I have raced at generally will just let that count as your pit stop since it is equal to about 4 or 5 nitro pit stops.
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Old 01-22-2009, 09:59 AM   #4
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Wow dude you are easy. Can I get some love too? LOL

I agree... it's best to not shoot for a 30 min runtime.
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Old 01-22-2009, 10:17 AM   #5
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Wow dude you are easy. Can I get some love too? LOL

I agree... it's best to not shoot for a 30 min runtime.
Yup, you end up with a car so HEAVY from batteries, it won't hang with the competition. Let us know how you stack up against them Nitro Burners.
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Old 01-22-2009, 10:20 AM   #6
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Yep most tracks understand that 1 battery swap takes longer than 3-5 normal fuel stop for a nitro.
SO as long as you explain that to the race director you should be good.
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Old 01-22-2009, 10:38 AM   #7
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If the track is small to medium, it might be possible to make 30 minutes with a 5s 6000 pack in a buggy with a Neu 1512 3d or 3.5d. Maybe a 6s 5000 pack. I can get right at 24/25 minutes in a race on a very big track with a 5s 5000 pack. I basically burn about 200-210/minute. But as others have stated, the pack will be heavy and it will probably affect handling negatively.
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Old 01-22-2009, 10:42 AM   #8
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Oh yea im easy with plenty of love to go around

So what mininmum size battery gives you a garrenteed solid 15+min run?

A buddy told me also that even if the one batt swap takes a bit longer than all the fuel stops, the E racer gets to stay in a rythem longer without interruption and the E racer wont have a flame out.
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Old 01-22-2009, 10:47 AM   #9
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Oh yea im easy with plenty of love to go around

So what mininmum size battery gives you a garrenteed solid 15+min run?

A buddy told me also that even if the one batt swap takes a bit longer than all the fuel stops, the E racer gets to stay in a rythem longer without interruption and the E racer wont have a flame out.
It depends on the motor you are using, but generally speaking for a solid 15 minute main with a few warm up laps you will need

4s 5000 (2000-2200kv motor)
5s 4000 (2000-1700kv motor)
6s 3300 (1700-1400kv motor)

Those batteries should give you right around 17-20 minutes of race time depending on gearing, track, and driving style.
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Old 01-22-2009, 11:28 AM   #10
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It depends on the motor you are using, but generally speaking for a solid 15 minute main with a few warm up laps you will need

4s 5000 (2000-2200kv motor)
5s 4000 (2000-1700kv motor)
6s 3300 (1700-1400kv motor)

Those batteries should give you right around 17-20 minutes of race time depending on gearing, track, and driving style.
Perfect .... thanks again .... very much appreciate the quick and knowlegable response ... your info gives us a place to start
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Old 01-22-2009, 11:31 AM   #11
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Perfect .... thanks again .... very much appreciate the quick and knowlegable response ... your info gives us a place to start
Mamba monster / 2200kv motor combo geared 15/46 with a 4s 5000 = 17-21 min.
This is in my buggy in my sig.
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Old 01-22-2009, 11:37 AM   #12
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Mamba monster / 2200kv motor combo geared 15/46 with a 4s 5000 = 17-21 min.
This is in my buggy in my sig.
Excellent info ! you guys are great !

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Old 01-22-2009, 12:11 PM   #13
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Make sure you use velcro only to hold the body on and use a single battery strap. That will make the battery change much more efficient. You'll also need someone with experience with Dean's connectors to pit for you. Otherwise in their haste they could break your connectors. It's doable for sure, you must also ensure that your electronics are setup correctly and the car is geared properly if you're going to run 30 minutes non stop otherwise the components could suffer from overheating.
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Old 01-22-2009, 12:24 PM   #14
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I dont know if this will help but heres a good tip. I take a dremel with cutoff wheel and put a little groove right between the battery bars on the speedo wires. Then i tie a small peice of High-tec line around it with a 1-1.25 inch loop that hangs off of it. When in for a pit they simply pull on the line and hold battery side(or loop here too) and they can remove battery without pulling on the wires and the Deans (which could lead to them yanking off a wire because of speed issue). I have different people pit all the time so the little line really helps the Newbs and keeps my connections in good shape. One of my buddies ripped off a wire so after that i had to come up with something. I was in the lead too!

Last edited by LT280z; 01-22-2009 at 12:25 PM. Reason: cant spell
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Old 01-22-2009, 12:40 PM   #15
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I dont know if this will help but heres a good tip. I take a dremel with cutoff wheel and put a little groove right between the battery bars on the speedo wires. Then i tie a small peice of High-tec line around it with a 1-1.25 inch loop that hangs off of it. When in for a pit they simply pull on the line and hold battery side(or loop here too) and they can remove battery without pulling on the wires and the Deans (which could lead to them yanking off a wire because of speed issue). I have different people pit all the time so the little line really helps the Newbs and keeps my connections in good shape. One of my buddies ripped off a wire so after that i had to come up with something. I was in the lead too!
Not quite following..."between the battery bars"? Any pics?
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