XERUN 2250kv 4168SL 1/8th combo
06-30-2010, 05:41 PM
#101
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RE: XERUN 2250kv 4168SL 1/8th combo
I have my LVC set to 3.2v also, don't understand what made the battery go bad, I've always balanced charged it.
I did get my charger to display each cell but can't remember how i did it, I think before I started charging one cell was around 1.8v, whilst the other were all broadly similar at 3.2 something.
Its a Fusion Elysium LX60B Pro charger. Should I discharge it using the charger to be safe or run it in the buggy?
I did get my charger to display each cell but can't remember how i did it, I think before I started charging one cell was around 1.8v, whilst the other were all broadly similar at 3.2 something.
Its a Fusion Elysium LX60B Pro charger. Should I discharge it using the charger to be safe or run it in the buggy?
06-30-2010, 06:26 PM
#102
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RE: XERUN 2250kv 4168SL 1/8th combo
Just be sure that one cell isn't too low as the LVC on the esc doesn't look at each individual cell, only the total battery voltage. So I'd just be worried about running the battery down to the LVC while the one bad cell is way below 3V thus damaging it further.
Sounds like it's just a bad cell. Kinda like the one Turnigy of mine that didn't balance properly on the first charge. It seems to have mostly repaired itself now after running it down and then charging it, but still doesn't balance perfectly like all my other packs.
Sounds like it's just a bad cell. Kinda like the one Turnigy of mine that didn't balance properly on the first charge. It seems to have mostly repaired itself now after running it down and then charging it, but still doesn't balance perfectly like all my other packs.
07-01-2010, 03:16 AM
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RE: XERUN 2250kv 4168SL 1/8th combo
I think its toast..............Just connected it to the charger and the cells read 4.17, 4.19, 4.19, 0, 0, 0, so basically the fourth cell has 0volts!
Guess its finished then?
Any tips on safe Lipo disposal?
Guess its finished then?
Any tips on safe Lipo disposal?
07-01-2010, 03:21 AM
#104
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RE: XERUN 2250kv 4168SL 1/8th combo
Check your balancing plug.It may has a problem.Or balancer's wires have problem with the connection to your battery.(same thing happened to me with a 2s lipo...and i just needed to resolder the wires to my battery)
07-01-2010, 09:50 PM
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RE: XERUN 2250kv 4168SL 1/8th combo
I agree with AL3xGR, likely a bad connection in the balance plug or the connection to the battery. Would be hard to believe a cell is at 0V.
07-02-2010, 06:12 AM
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RE: XERUN 2250kv 4168SL 1/8th combo
Just got my XERUN 80A esc in, came in a really nice box, along with the program card in another package. I'll setup it up later tonight or weekend and test it out with my Medusa 3300 motor on 2s and 3s, and maybe 4s with my Feigao 7XL motor and report back.
07-04-2010, 01:40 PM
#107
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RE: XERUN 2250kv 4168SL 1/8th combo
Slo-V, did you get your XERUN 80A running?
Took my Ve8 with the XERUN 80A / 2250kv combo out yesterday to the track and ran with a bunch of Losi EIGHT's with Castle 2200kv's in them and was right at home with them.
This system's been flawless for me so far!
Took my Ve8 with the XERUN 80A / 2250kv combo out yesterday to the track and ran with a bunch of Losi EIGHT's with Castle 2200kv's in them and was right at home with them.
This system's been flawless for me so far!
07-04-2010, 02:01 PM
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RE: XERUN 2250kv 4168SL 1/8th combo
I ran my 80A XERUN yesterday for 20 minutes.
Setup:
Traxxas Slash. 95% Stock (cheap Futaba servo)
Futaba 3ch 2.4Ghz radio/receiver
Medusa 36-50 3300 Kv motor - 23/84 gearing
Integy motor heatsink/fan (don't think I need it with this motor)
2s Rhino 3700 Mah 20C lipo
3s Turnigy 5000 mah 25C lipo
90+ *F weather outside, annoying humidity, partly cloudy.
I'll get right into it. It's HUGE. Probably as big as a MMM esc, or a bit larger. Compared to my MM esc or ZTW 60A which is tiny as well, this XERUN unit is quite large. Apparently the 80A and 150A XERUN use the same ESC case.
One thing I noticed right away is the default "auto lipo" mode sucks. At least with mine. I put in a charged 2s lipo, the ESC beeped 3 times with turned on.. Hmm something about that seemed odd to me. Whenever I'd punch it, the motor would randomly quit, then continue on again. I thought it was having issues with the 2.4Gzh radio, but not so. After a while I noticed it would actually cut power to the whole truck, and come back on (all within 1 second). So I thought something was fishy.
I tried my 3s lipo next, it got recognized with 4 beeps when I turned on the ESC. For some reason I thought it beeped an extra time as a start tone and the rest as cell count, never having used a XERUN before. It too, randomly would go WOT, then next pass go slower, then cut out. Well, I realized it was going into LVC mode and cutting power, because it thought both batteries were 1 cell count higher than they really were. It thought the 2 cell lipo was a 3 cell, and so because the voltage on a 2s lipo is much lower than a 3s, it would go into LVC mode. Same with 3s lipo.
I used the program card to set the LVC to fixed, 3s voltage mode (3.2v per cell or whatever default the whole time it had). NOW the truck woke up.
I also realized the default punch control was conservatively mid range, so I changed that to full power setting (punch control setting to max value), for full on wheelies etc.
My new 3300 kv Medusa motor eventually heated up the slipper and the truck seemed to do OK pulling wheelies then. But it was somewhat inconsistent. I blame that somewhat on slightly worn tires. The Slash on my 2700 Kv motor with my Mamba Max and my ZTW 60A esc would pull wheelies all the way through from start to stop, for the most part. This 3300 motor and 80A XERUN leave me with a little doubt. I'm going to further test the XERUN with 4s lipo, same, Slash and 3300 Kv motor, and test the auto LVC again and see what it does.
On the good side, the 80A XERUN at least on the outside case, never reached over 105*F from what I could measure, using my Duratrax Flashpoint temp gauge. I want to open up the top cover and expose the fan and heatsink, so I can measure the temperature more accurately for a few rounds next time, so I'll mess with that if I can.
Low speed throttle/driving is much like my MM esc, unlike my ZTW 60A that has a rather "fast" low throttle threshold. The XERUN does a familiar go-go-coast-go-go-coast at extreme low throttle, whereas the ZTW will simply engage at a higher speed and so you don't get that low speed (if you really need it 2% of the time). Smooth overall operation, nearly zero cogging or freak directional spinning in any kind of throttle engagement, something my ZTW can screw with (coasting backward? don't bother hitting brakes or forward too much....it'll just get confused).
The Medusa geared 2 teeth lower of course, ran ~15-20*F cooler than my Feigao 9L 2700 Kv on 3s.
I didn't reach the LVC point on my 3s lipo after about 20 minutes, because after months of abuse, the front left lower shock mount connector broke off the shock shaft (hit 2" curb lip goign faaast). So I drove it on 3 wheels on-ground but didn't want to further push my luck, and brought it in.
The battery was close to 11.2 volts by that time so I know I was getting similar runtimes as my Feigao, but with more efficient faster speeds (few odd mph) and lower heat.
XERUN 80A ESC 4s lipo capable
PROS:
- $75 shipped from China, or $90 shipped from US distributor (I got mine from hobbypartz in 4 days, didn't want to wait 10 days).
- Easy clear instructions, simple calibration
- Smooth throttle response
- Good low speed control
- No jittery forward/backward motions noticed (yet).
- Fan keeps ESC cooool.
- Pre-soldered connectors and wires
- Comes with pre-soldered Dual battery input DEANS "Y" series connector
- Includes 4mm gold motor connectors (the kind with 4-split bullet head)
- Hobbywing/assorted stickers!
- Can be used with simple program card or their USB programmer - SOLD separetely.
CONS:
- It's HUGE - had to almost wedge it into place on my Slash rear left corner, where my other ESCs simply sit with room to spare.
- Auto LVC cell count for 2s-3s detection seems screwy. Counts 1 extra cell and so is undriveable after 1 minute, so far. Will do more auto lipo mode testing.
Setup:
Traxxas Slash. 95% Stock (cheap Futaba servo)
Futaba 3ch 2.4Ghz radio/receiver
Medusa 36-50 3300 Kv motor - 23/84 gearing
Integy motor heatsink/fan (don't think I need it with this motor)
2s Rhino 3700 Mah 20C lipo
3s Turnigy 5000 mah 25C lipo
90+ *F weather outside, annoying humidity, partly cloudy.
I'll get right into it. It's HUGE. Probably as big as a MMM esc, or a bit larger. Compared to my MM esc or ZTW 60A which is tiny as well, this XERUN unit is quite large. Apparently the 80A and 150A XERUN use the same ESC case.
One thing I noticed right away is the default "auto lipo" mode sucks. At least with mine. I put in a charged 2s lipo, the ESC beeped 3 times with turned on.. Hmm something about that seemed odd to me. Whenever I'd punch it, the motor would randomly quit, then continue on again. I thought it was having issues with the 2.4Gzh radio, but not so. After a while I noticed it would actually cut power to the whole truck, and come back on (all within 1 second). So I thought something was fishy.
I tried my 3s lipo next, it got recognized with 4 beeps when I turned on the ESC. For some reason I thought it beeped an extra time as a start tone and the rest as cell count, never having used a XERUN before. It too, randomly would go WOT, then next pass go slower, then cut out. Well, I realized it was going into LVC mode and cutting power, because it thought both batteries were 1 cell count higher than they really were. It thought the 2 cell lipo was a 3 cell, and so because the voltage on a 2s lipo is much lower than a 3s, it would go into LVC mode. Same with 3s lipo.
I used the program card to set the LVC to fixed, 3s voltage mode (3.2v per cell or whatever default the whole time it had). NOW the truck woke up.
I also realized the default punch control was conservatively mid range, so I changed that to full power setting (punch control setting to max value), for full on wheelies etc.
My new 3300 kv Medusa motor eventually heated up the slipper and the truck seemed to do OK pulling wheelies then. But it was somewhat inconsistent. I blame that somewhat on slightly worn tires. The Slash on my 2700 Kv motor with my Mamba Max and my ZTW 60A esc would pull wheelies all the way through from start to stop, for the most part. This 3300 motor and 80A XERUN leave me with a little doubt. I'm going to further test the XERUN with 4s lipo, same, Slash and 3300 Kv motor, and test the auto LVC again and see what it does.
On the good side, the 80A XERUN at least on the outside case, never reached over 105*F from what I could measure, using my Duratrax Flashpoint temp gauge. I want to open up the top cover and expose the fan and heatsink, so I can measure the temperature more accurately for a few rounds next time, so I'll mess with that if I can.
Low speed throttle/driving is much like my MM esc, unlike my ZTW 60A that has a rather "fast" low throttle threshold. The XERUN does a familiar go-go-coast-go-go-coast at extreme low throttle, whereas the ZTW will simply engage at a higher speed and so you don't get that low speed (if you really need it 2% of the time). Smooth overall operation, nearly zero cogging or freak directional spinning in any kind of throttle engagement, something my ZTW can screw with (coasting backward? don't bother hitting brakes or forward too much....it'll just get confused).
The Medusa geared 2 teeth lower of course, ran ~15-20*F cooler than my Feigao 9L 2700 Kv on 3s.
I didn't reach the LVC point on my 3s lipo after about 20 minutes, because after months of abuse, the front left lower shock mount connector broke off the shock shaft (hit 2" curb lip goign faaast). So I drove it on 3 wheels on-ground but didn't want to further push my luck, and brought it in.
The battery was close to 11.2 volts by that time so I know I was getting similar runtimes as my Feigao, but with more efficient faster speeds (few odd mph) and lower heat.
XERUN 80A ESC 4s lipo capable
PROS:
- $75 shipped from China, or $90 shipped from US distributor (I got mine from hobbypartz in 4 days, didn't want to wait 10 days).
- Easy clear instructions, simple calibration
- Smooth throttle response
- Good low speed control
- No jittery forward/backward motions noticed (yet).
- Fan keeps ESC cooool.
- Pre-soldered connectors and wires
- Comes with pre-soldered Dual battery input DEANS "Y" series connector
- Includes 4mm gold motor connectors (the kind with 4-split bullet head)
- Hobbywing/assorted stickers!
- Can be used with simple program card or their USB programmer - SOLD separetely.
CONS:
- It's HUGE - had to almost wedge it into place on my Slash rear left corner, where my other ESCs simply sit with room to spare.
- Auto LVC cell count for 2s-3s detection seems screwy. Counts 1 extra cell and so is undriveable after 1 minute, so far. Will do more auto lipo mode testing.
07-04-2010, 09:56 PM
#109
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RE: XERUN 2250kv 4168SL 1/8th combo
Good review. In the manual it strongly suggests to set your lipo cell count manually. I never even attempted the auto cell count on mine so I can't comment on what my experience would've been with 4S.
One good thing about the XERUN is that the firmware is upgradeable. The firmware that shipped with mine was a few versions behind so I downloaded the update to the programmer card and flashed the esc. Amongst a few minor tweaks/improvements the newer firmware provides, cogging is said to be greatly improved. I did notice first hand this improvement, as very low speed throttle was a little jittery before the upgrade. Now it's almost non-existent it seems.
On my Ve8 I did have to turn down the braking from 50% to 25%. At the default 50% value, the brakes were way too sensitive. So in mid-air I would just barely touch the brake and the buggy would do a nose-dive straight into the ground. When holding the buggy with the wheels off the ground, simply touching the brakes would stop the wheels in an instant. Once I changed it to 25% this problem was resolved and the buggy became much more controllable in mid-air.
One good thing about the XERUN is that the firmware is upgradeable. The firmware that shipped with mine was a few versions behind so I downloaded the update to the programmer card and flashed the esc. Amongst a few minor tweaks/improvements the newer firmware provides, cogging is said to be greatly improved. I did notice first hand this improvement, as very low speed throttle was a little jittery before the upgrade. Now it's almost non-existent it seems.
On my Ve8 I did have to turn down the braking from 50% to 25%. At the default 50% value, the brakes were way too sensitive. So in mid-air I would just barely touch the brake and the buggy would do a nose-dive straight into the ground. When holding the buggy with the wheels off the ground, simply touching the brakes would stop the wheels in an instant. Once I changed it to 25% this problem was resolved and the buggy became much more controllable in mid-air.
07-11-2010, 02:14 AM
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RE: XERUN 2250kv 4168SL 1/8th combo
just thought I'd let you guys know my hyper 7 BL conversion is done!! Offcourse it didn't last very long!!
Heres the stats
hyper 7 with .21 nitro engine - gutted!!
xerun 150A esc
blue bird servo (hobao got junked)
zippy 4s 5000mAh 40c
spektrum ds3 receiver
19t castle mod 1 pinion
And the "heart" of the application hobbyking kd36 6xl 2800kv Bl motor.
For the lenght of the 5 minutes it got to run, this thing was phenomenal. Never under any circumstances did my nitro go this fast!! NO cogging, jitters, etc. At the end of the 5 min motor temps were 189F!!
Heres what happened. At the end of the run, aside from the temps the motr got noisy, and wouldnt turn. When i would lift the car in the air it would turn all 4 wheels, but not the same power and a lot of hesitation. When the car was on the ground the front of the shaft would not turn, but the rear part of the shaft would!! So I'm assuming the shaft snapped!!
In any event, I;am now looking for either a MMM or the xerun! Aside from all this she ran like a beauty.
Point im trying to make, you get what you pay for!!
I should have the vid up and running in a couple of min I will post the links shortly.
Any advice on what else might of happened is welcome (I tried opening the motor but no luck!!)
http://www.youtube.com/watch?v=HBrrlr25_Ow
http://www.youtube.com/watch?v=Ep7zq0nGQ30
http://www.youtube.com/watch?v=t11mQmeoxik
http://www.youtube.com/watch?v=kC1CNWjCKZQ
Heres the stats
hyper 7 with .21 nitro engine - gutted!!
xerun 150A esc
blue bird servo (hobao got junked)
zippy 4s 5000mAh 40c
spektrum ds3 receiver
19t castle mod 1 pinion
And the "heart" of the application hobbyking kd36 6xl 2800kv Bl motor.
For the lenght of the 5 minutes it got to run, this thing was phenomenal. Never under any circumstances did my nitro go this fast!! NO cogging, jitters, etc. At the end of the 5 min motor temps were 189F!!
Heres what happened. At the end of the run, aside from the temps the motr got noisy, and wouldnt turn. When i would lift the car in the air it would turn all 4 wheels, but not the same power and a lot of hesitation. When the car was on the ground the front of the shaft would not turn, but the rear part of the shaft would!! So I'm assuming the shaft snapped!!
In any event, I;am now looking for either a MMM or the xerun! Aside from all this she ran like a beauty.
Point im trying to make, you get what you pay for!!
I should have the vid up and running in a couple of min I will post the links shortly.
Any advice on what else might of happened is welcome (I tried opening the motor but no luck!!)
http://www.youtube.com/watch?v=HBrrlr25_Ow
http://www.youtube.com/watch?v=Ep7zq0nGQ30
http://www.youtube.com/watch?v=t11mQmeoxik
http://www.youtube.com/watch?v=kC1CNWjCKZQ
07-11-2010, 02:59 AM
#113
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RE: XERUN 2250kv 4168SL 1/8th combo
ORIGINAL: samguan
can the lipo cutoff bet set without the programming card?
can the lipo cutoff bet set without the programming card?
07-11-2010, 03:07 AM
#114
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RE: XERUN 2250kv 4168SL 1/8th combo
ORIGINAL: amen
just thought I'd let you guys know my hyper 7 BL conversion is done!! Offcourse it didn't last very long!!
Heres the stats
hyper 7 with .21 nitro engine - gutted!!
xerun 150A esc
blue bird servo (hobao got junked)
zippy 4s 5000mAh 40c
spektrum ds3 receiver
19t castle mod 1 pinion
And the ''heart'' of the application hobbyking kd36 6xl 2800kv Bl motor.
For the lenght of the 5 minutes it got to run, this thing was phenomenal. Never under any circumstances did my nitro go this fast!! NO cogging, jitters, etc. At the end of the 5 min motor temps were 189F!!
Heres what happened. At the end of the run, aside from the temps the motr got noisy, and wouldnt turn. When i would lift the car in the air it would turn all 4 wheels, but not the same power and a lot of hesitation. When the car was on the ground the front of the shaft would not turn, but the rear part of the shaft would!! So I'm assuming the shaft snapped!!
In any event, I;am now looking for either a MMM or the xerun! Aside from all this she ran like a beauty.
Point im trying to make, you get what you pay for!!
I should have the vid up and running in a couple of min I will post the links shortly.
Any advice on what else might of happened is welcome (I tried opening the motor but no luck!!)
just thought I'd let you guys know my hyper 7 BL conversion is done!! Offcourse it didn't last very long!!
Heres the stats
hyper 7 with .21 nitro engine - gutted!!
xerun 150A esc
blue bird servo (hobao got junked)
zippy 4s 5000mAh 40c
spektrum ds3 receiver
19t castle mod 1 pinion
And the ''heart'' of the application hobbyking kd36 6xl 2800kv Bl motor.
For the lenght of the 5 minutes it got to run, this thing was phenomenal. Never under any circumstances did my nitro go this fast!! NO cogging, jitters, etc. At the end of the 5 min motor temps were 189F!!
Heres what happened. At the end of the run, aside from the temps the motr got noisy, and wouldnt turn. When i would lift the car in the air it would turn all 4 wheels, but not the same power and a lot of hesitation. When the car was on the ground the front of the shaft would not turn, but the rear part of the shaft would!! So I'm assuming the shaft snapped!!
In any event, I;am now looking for either a MMM or the xerun! Aside from all this she ran like a beauty.
Point im trying to make, you get what you pay for!!
I should have the vid up and running in a couple of min I will post the links shortly.
Any advice on what else might of happened is welcome (I tried opening the motor but no luck!!)
They do run a bit hot so that's why i went with the lower kv one. I geared it for a final gear ratio of 10.68.
Yours may have been geared too high so it overheated and failed.
To open it I think i read in a hobbycity review that the front screws off.
07-11-2010, 04:32 AM
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RE: XERUN 2250kv 4168SL 1/8th combo
What size pinion did you use on yours?? I should have changed pinions when i read 152F, but when i took the reading it wass too late. Does your shaft move back and forth?? To all that are using the xerun how are your temps??
07-11-2010, 08:07 AM
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RE: XERUN 2250kv 4168SL 1/8th combo
ORIGINAL: amen
What size pinion did you use on yours?? I should have changed pinions when i read 152F, but when i took the reading it wass too late. Does your shaft move back and forth?? To all that are using the xerun how are your temps??
What size pinion did you use on yours?? I should have changed pinions when i read 152F, but when i took the reading it wass too late. Does your shaft move back and forth?? To all that are using the xerun how are your temps??
It's weird actually, all my other motors have a little back and forth play in the shaft.
I use this gearing calculator, it's really helpful:
http://scriptasylum.com/rc_speed/_top_speed.html
07-14-2010, 09:11 AM
#117
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RE: XERUN 2250kv 4168SL 1/8th combo
On my Ve8 I'm geared 18/50. On a really hot day 30C+ the motor gets up to about 175F after running through a 5400mah 4S lipo.
The esc barely gets warm at all.
The esc barely gets warm at all.
07-14-2010, 10:55 AM
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RE: XERUN 2250kv 4168SL 1/8th combo
just got my xerun 2000kv today!! I installed it and all looks good! I've got my hyper at 19/46. I will post temps as soon as i get a good run. BTW what kind of screws are you using to mount the xerun??
thanks
thanks
11-10-2010, 05:17 PM
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RE: XERUN 2250kv 4168SL 1/8th combo
Nice. Im getting the xerun 150a 2000kv combo for the slash 4x4 during the winter hopefully and swapping the stock vxl into a pede 4x4 roller once they start showing up on ebay and gonna go snow bashing w/ the pede 4x4 and some 30 series badlands woohoo my next project.
03-01-2011, 05:21 PM
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RE: XERUN 2250kv 4168SL 1/8th combo
ORIGINAL: Willystylz
On my Ve8 I'm geared 18/50. On a really hot day 30C+ the motor gets up to about 175F after running through a 5400mah 4S lipo.
The esc barely gets warm at all.
On my Ve8 I'm geared 18/50. On a really hot day 30C+ the motor gets up to about 175F after running through a 5400mah 4S lipo.
The esc barely gets warm at all.
I'm finding that these systems are out of stock everywhere. Not sure what to think on that but after picking up a used Ve8 I would like to find a cheap system.
03-01-2011, 06:44 PM
#122
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RE: XERUN 2250kv 4168SL 1/8th combo
ORIGINAL: MTboy
How has this system held up for you in the Ve8? How long are your run time with the 5400 4s?
I'm finding that these systems are out of stock everywhere. Not sure what to think on that but after picking up a used Ve8 I would like to find a cheap system.
ORIGINAL: Willystylz
On my Ve8 I'm geared 18/50. On a really hot day 30C+ the motor gets up to about 175F after running through a 5400mah 4S lipo.
The esc barely gets warm at all.
On my Ve8 I'm geared 18/50. On a really hot day 30C+ the motor gets up to about 175F after running through a 5400mah 4S lipo.
The esc barely gets warm at all.
I'm finding that these systems are out of stock everywhere. Not sure what to think on that but after picking up a used Ve8 I would like to find a cheap system.
03-02-2011, 04:36 AM
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RE: XERUN 2250kv 4168SL 1/8th combo
Hey thanks MC. Had no clue on those two sites after googling. I see now that theres a 2000kv combo or maybe they have had it but it's been awhile since I've looked into these systems..lol
03-02-2011, 05:47 AM
#124
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RE: XERUN 2250kv 4168SL 1/8th combo
No problem,
Kershaw designs is another place that may have what you are looking for. i have shopped all three and besides from having to wait 2-3 weeks from rcfans they are all great.
The leopard 4pole motors(red can) are wicked powerful btw.
Kershaw designs is another place that may have what you are looking for. i have shopped all three and besides from having to wait 2-3 weeks from rcfans they are all great.
The leopard 4pole motors(red can) are wicked powerful btw.
03-02-2011, 03:12 PM
#125
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RE: XERUN 2250kv 4168SL 1/8th combo
I placed my order for the 2250kv combo so thanks again. Wish I would have seen your post alittle before..lol Will keep the leopard motor in mind for when I need a new one. Hopefully it dont take to long to get here from hot rock.. Will update this thread when I receive everything..