Losi 1/8 8ight E 4wd Thread
05-21-2009, 09:41 PM
#2704
Well, it'll depends on a couple things. Your track, ambient temps and your driving style. First, you need to run the car as is, and try to go real easy on it. It's tempting to use all that power, but you'll just break the car. 
Try to be consistent, as if in a race. After about 8-10 minutes, check your motor temp. If it's over 200F, STOP, and consider gearing down. If it's in the low 140s, you're either there or close. It'll also depend on your ambient temps. I was able to get away with taller gearing in the winter, basically mid 40s and 50F.
So drive it first, monitor your temps, and see what happens. Don't use just one run. Make sure your pack is fully charged, that's why I said check it after only 8-10 minutes of run time. It seems as though when the available voltage goes down, the temps go up. So temp it in about the middle or last 3rd of a charge.
Try to be consistent, as if in a race. After about 8-10 minutes, check your motor temp. If it's over 200F, STOP, and consider gearing down. If it's in the low 140s, you're either there or close. It'll also depend on your ambient temps. I was able to get away with taller gearing in the winter, basically mid 40s and 50F. So drive it first, monitor your temps, and see what happens. Don't use just one run. Make sure your pack is fully charged, that's why I said check it after only 8-10 minutes of run time. It seems as though when the available voltage goes down, the temps go up. So temp it in about the middle or last 3rd of a charge.
05-21-2009, 11:49 PM
#2708
I'm not trying to start an argument here. That is simply not true. It is true of the old brushed ESC's but not of brushless. Brushless operates on 'Drive Frequencies' and the EPA is perfectly safe to turn down. I've consulted many manufacturers and drivers on the EPA adjustment and it turns out to be a common adjustment for brushless systems.
I never said it wasn't safe to turn down the epa. I just suggested to buy the correct motor for the application instead of buying a motor that you know you would have to adjust the epa on. Its a proven fact that esc's, brushed or brushless, run most efficiently at full throttle.
05-22-2009, 07:05 AM
#2709
RUNTIME
As I read through these posts it seems to me the biggest concern is runtime. I've been racing eight scale nitro offroad for ten years and have just started to experiment with eight scale electric.
Here's the setup I ran last weekend at Sunrise Rc in Bethel Ohio on a 70' x 110' track with 1 straight about 90' long. All clay med. bite.
losi 8eight 1.0 (one of the first 8ight,s on the market converted to electric)
losi esc
losi 1700 kv motor
losi 4s 5000 mah battery
geared 16/45
epa set at 90% (120% being full throttle)
The most run time I could get is 11 min. A freind was running the same set up except he was running a brand new e 8ight with a 2100 kv motor geared 15/45 and he was getting 14 min.
I read about the 25+ min. runtimes people are getting on here and to be honest it amazes me. I'm not contesting them , just trying to figure out how I can get the same.
I am going to try a 5s 5000 mah battery this weekend to see what differance it makes.
If I can get 20 min run time I don't think I will ever run nitro again.
You guy's that are getting long runtimes , please post your setups for the rest of us.
Here's the setup I ran last weekend at Sunrise Rc in Bethel Ohio on a 70' x 110' track with 1 straight about 90' long. All clay med. bite.
losi 8eight 1.0 (one of the first 8ight,s on the market converted to electric)
losi esc
losi 1700 kv motor
losi 4s 5000 mah battery
geared 16/45
epa set at 90% (120% being full throttle)
The most run time I could get is 11 min. A freind was running the same set up except he was running a brand new e 8ight with a 2100 kv motor geared 15/45 and he was getting 14 min.
I read about the 25+ min. runtimes people are getting on here and to be honest it amazes me. I'm not contesting them , just trying to figure out how I can get the same.
I am going to try a 5s 5000 mah battery this weekend to see what differance it makes.
If I can get 20 min run time I don't think I will ever run nitro again.
You guy's that are getting long runtimes , please post your setups for the rest of us.
05-22-2009, 07:17 AM
#2710
As I read through these posts it seems to me the biggest concern is runtime. I've been racing eight scale nitro offroad for ten years and have just started to experiment with eight scale electric.
Here's the setup I ran last weekend at Sunrise Rc in Bethel Ohio on a 70' x 110' track with 1 straight about 90' long. All clay med. bite.
losi 8eight 1.0 (one of the first 8ight,s on the market converted to electric)
losi esc
losi 1700 kv motor
losi 4s 5000 mah battery
geared 16/45
epa set at 90% (120% being full throttle)
The most run time I could get is 11 min. A freind was running the same set up except he was running a brand new e 8ight with a 2100 kv motor geared 15/45 and he was getting 14 min.
I read about the 25+ min. runtimes people are getting on here and to be honest it amazes me. I'm not contesting them , just trying to figure out how I can get the same.
I am going to try a 5s 5000 mah battery this weekend to see what differance it makes.
If I can get 20 min run time I don't think I will ever run nitro again.
You guy's that are getting long runtimes , please post your setups for the rest of us.
Here's the setup I ran last weekend at Sunrise Rc in Bethel Ohio on a 70' x 110' track with 1 straight about 90' long. All clay med. bite.
losi 8eight 1.0 (one of the first 8ight,s on the market converted to electric)
losi esc
losi 1700 kv motor
losi 4s 5000 mah battery
geared 16/45
epa set at 90% (120% being full throttle)
The most run time I could get is 11 min. A freind was running the same set up except he was running a brand new e 8ight with a 2100 kv motor geared 15/45 and he was getting 14 min.
I read about the 25+ min. runtimes people are getting on here and to be honest it amazes me. I'm not contesting them , just trying to figure out how I can get the same.
I am going to try a 5s 5000 mah battery this weekend to see what differance it makes.
If I can get 20 min run time I don't think I will ever run nitro again.
You guy's that are getting long runtimes , please post your setups for the rest of us.
05-22-2009, 07:35 AM
#2711
runtime
110 to 125 deg.
05-22-2009, 07:41 AM
#2712
As I read through these posts it seems to me the biggest concern is runtime. I've been racing eight scale nitro offroad for ten years and have just started to experiment with eight scale electric.
Here's the setup I ran last weekend at Sunrise Rc in Bethel Ohio on a 70' x 110' track with 1 straight about 90' long. All clay med. bite.
losi 8eight 1.0 (one of the first 8ight,s on the market converted to electric)
losi esc
losi 1700 kv motor
losi 4s 5000 mah battery
geared 16/45
epa set at 90% (120% being full throttle)
The most run time I could get is 11 min. A freind was running the same set up except he was running a brand new e 8ight with a 2100 kv motor geared 15/45 and he was getting 14 min.
I read about the 25+ min. runtimes people are getting on here and to be honest it amazes me. I'm not contesting them , just trying to figure out how I can get the same.
I am going to try a 5s 5000 mah battery this weekend to see what differance it makes.
If I can get 20 min run time I don't think I will ever run nitro again.
You guy's that are getting long runtimes , please post your setups for the rest of us.
Here's the setup I ran last weekend at Sunrise Rc in Bethel Ohio on a 70' x 110' track with 1 straight about 90' long. All clay med. bite.
losi 8eight 1.0 (one of the first 8ight,s on the market converted to electric)
losi esc
losi 1700 kv motor
losi 4s 5000 mah battery
geared 16/45
epa set at 90% (120% being full throttle)
The most run time I could get is 11 min. A freind was running the same set up except he was running a brand new e 8ight with a 2100 kv motor geared 15/45 and he was getting 14 min.
I read about the 25+ min. runtimes people are getting on here and to be honest it amazes me. I'm not contesting them , just trying to figure out how I can get the same.
I am going to try a 5s 5000 mah battery this weekend to see what differance it makes.
If I can get 20 min run time I don't think I will ever run nitro again.
You guy's that are getting long runtimes , please post your setups for the rest of us.
05-22-2009, 08:32 AM
#2714
Well, it'll depends on a couple things. Your track, ambient temps and your driving style. First, you need to run the car as is, and try to go real easy on it. It's tempting to use all that power, but you'll just break the car. Try to be consistent, as if in a race. After about 8-10 minutes, check your motor temp. If it's over 200F, STOP, and consider gearing down. If it's in the low 140s, you're either there or close. It'll also depend on your ambient temps. I was able to get away with taller gearing in the winter, basically mid 40s and 50F.
So drive it first, monitor your temps, and see what happens. Don't use just one run. Make sure your pack is fully charged, that's why I said check it after only 8-10 minutes of run time. It seems as though when the available voltage goes down, the temps go up. So temp it in about the middle or last 3rd of a charge.
Try to be consistent, as if in a race. After about 8-10 minutes, check your motor temp. If it's over 200F, STOP, and consider gearing down. If it's in the low 140s, you're either there or close. It'll also depend on your ambient temps. I was able to get away with taller gearing in the winter, basically mid 40s and 50F. So drive it first, monitor your temps, and see what happens. Don't use just one run. Make sure your pack is fully charged, that's why I said check it after only 8-10 minutes of run time. It seems as though when the available voltage goes down, the temps go up. So temp it in about the middle or last 3rd of a charge.
05-22-2009, 08:36 AM
#2715
I ran last weekend at Sunrise Rc in Bethel Ohio on a 70' x 110' track with 1 straight about 90' long. All clay med. bite.
losi 8eight 1.0 (one of the first 8ight,s on the market converted to electric)
losi esc
losi 1700 kv motor
losi 4s 5000 mah battery
geared 16/45
epa set at 90% (120% being full throttle)
The most run time I could get is 11 min. A freind was running the same set up except he was running a brand new e 8ight with a 2100 kv motor geared 15/45 and he was getting 14 min.
I am going to try a 5s 5000 mah battery this weekend to see what differance it makes.
If I can get 20 min run time I don't think I will ever run nitro again.
losi 8eight 1.0 (one of the first 8ight,s on the market converted to electric)
losi esc
losi 1700 kv motor
losi 4s 5000 mah battery
geared 16/45
epa set at 90% (120% being full throttle)
The most run time I could get is 11 min. A freind was running the same set up except he was running a brand new e 8ight with a 2100 kv motor geared 15/45 and he was getting 14 min.
I am going to try a 5s 5000 mah battery this weekend to see what differance it makes.
If I can get 20 min run time I don't think I will ever run nitro again.
#1 is the battery balance charged or in good balance
#2 16/45 on such a small track maybe too much. At many tracks 15/45 was commonly used
#3 If you go 5S drive several teeth in pinion or hang on
#4 From what you say above the ESC is NOT calibrated properly. The EPA must be set to 100% and then you can reduce EPA for either brake or throttle but not increase either. You say 90% which in your case could easily be 100%
#5 Is the ESC updated to the latest firmware?
#6 Brakes will eat run time and could lead to shorter times too
Hope something here helps you out...