ezrun questions
10-20-2009, 01:06 AM
#1
ezrun questions
hey everyone new to this forum.
i have been reading about the ezrun brushless combo for a while now
i have a XX4 should i get a 5.5t motor or a 8.5 and what type of gearing??
i plan on taking it to a local indoor track would the 5.5 be to much for the track?
here is a pic of my truck hope you guys like it.
were can i find a back up body??
i have been reading about the ezrun brushless combo for a while now
i have a XX4 should i get a 5.5t motor or a 8.5 and what type of gearing??
i plan on taking it to a local indoor track would the 5.5 be to much for the track?
here is a pic of my truck hope you guys like it.
were can i find a back up body??
10-20-2009, 08:40 AM
#2
Originally Posted by 1freddy
hey everyone new to this forum.
i have been reading about the ezrun brushless combo for a while now
i have a XX4 should i get a 5.5t motor or a 8.5 and what type of gearing??
i plan on taking it to a local indoor track would the 5.5 be to much for the track?
here is a pic of my truck hope you guys like it.
were can i find a back up body??
i have been reading about the ezrun brushless combo for a while now
i have a XX4 should i get a 5.5t motor or a 8.5 and what type of gearing??
i plan on taking it to a local indoor track would the 5.5 be to much for the track?
here is a pic of my truck hope you guys like it.
were can i find a back up body??
EZRuns have good reps, never used one myself. If the wallet can take it, get the Tekin RS 8.5T-10.5T combo. You won't be sorry.
That truck is pretty awesome. What body is that?
10-20-2009, 09:12 AM
#3
Tech Elite
iTrader: (42)
Join Date: Jun 2008
Location: anywhere I can race 2wd dirt,and 1/12 onroad in MI.
Posts: 3,864
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XX-4 on a indoor track the 8.5 will be more than enough.I do run ez-run speedo's.they are bullet proof.
10-20-2009, 10:32 AM
#4
Tech Adept
iTrader: (11)
Go with the Hobbywing XE Run 60 amp ESC if you are going that route. For $80 it is an awesome controller, and firmware upgradeable. It is the same thing as the Speed Passion V.2 controllers. Then you can run a nice sensored motor as well. I ran the EZ Run for a while, and I liked it, but now that I got the XE Run I will never look back.
10-20-2009, 06:46 PM
#5
I would definitely get the 8.5 given the two choices...
Just for relative comparison, my B44 has a 5700Kv (Castle), which is somewhere between 5 to 6 turns. My DF-03 has a 4300Kv (Hobbywing) which is somewhere between 8 to 10 turns.
The B44 was BALLISTIC. Had to turn the timing down on the ESC to the lowest setting. My DF-03 feels just fine...
Truthfully, many of the guys that run 1/10th 4wd run 10.5s or 13.5s. They are full of torque, and 4wd can use a lot of torque to get over the initial force caused by friction due to having a larger load (two gearboxes versus one).
Just for relative comparison, my B44 has a 5700Kv (Castle), which is somewhere between 5 to 6 turns. My DF-03 has a 4300Kv (Hobbywing) which is somewhere between 8 to 10 turns.
The B44 was BALLISTIC. Had to turn the timing down on the ESC to the lowest setting. My DF-03 feels just fine...
Truthfully, many of the guys that run 1/10th 4wd run 10.5s or 13.5s. They are full of torque, and 4wd can use a lot of torque to get over the initial force caused by friction due to having a larger load (two gearboxes versus one).
10-20-2009, 09:59 PM
#6
WE'RE DONE HERE.
Originally Posted by tom_chang79
I would definitely get the 8.5 given the two choices...
Just for relative comparison, my B44 has a 5700Kv (Castle), which is somewhere between 5 to 6 turns. My DF-03 has a 4300Kv (Hobbywing) which is somewhere between 8 to 10 turns.
The B44 was BALLISTIC. Had to turn the timing down on the ESC to the lowest setting. My DF-03 feels just fine...
Truthfully, many of the guys that run 1/10th 4wd run 10.5s or 13.5s. They are full of torque, and 4wd can use a lot of torque to get over the initial force caused by friction due to having a larger load (two gearboxes versus one).
Just for relative comparison, my B44 has a 5700Kv (Castle), which is somewhere between 5 to 6 turns. My DF-03 has a 4300Kv (Hobbywing) which is somewhere between 8 to 10 turns.
The B44 was BALLISTIC. Had to turn the timing down on the ESC to the lowest setting. My DF-03 feels just fine...
Truthfully, many of the guys that run 1/10th 4wd run 10.5s or 13.5s. They are full of torque, and 4wd can use a lot of torque to get over the initial force caused by friction due to having a larger load (two gearboxes versus one).
Experienced spot on advice. There's no need to wait for others.
10-20-2009, 10:22 PM
#7
Originally Posted by tom_chang79
Just for relative comparison, my B44 has a 5700Kv (Castle), which is somewhere between 5 to 6 turns. My DF-03 has a 4300Kv (Hobbywing) which is somewhere between 8 to 10 turns.
4300 is closer to 19t brushed or 10.5t brushless and 5700 is closer to 12T brushed or 7.5brushless
10-20-2009, 11:32 PM
#9
380 VS 540 Size
Just a heads up guys.
I've actually examined these EZrun motors up close. Note that EZrun full turn motors, e.g. 9T, 13T, etc. are actually 380-400 size heavily finned bl motors that appear to be 540 size motors due to the exterior dimensions of their motor cans/casings. Their smaller and lighter rotors are the reason why they require only 35 amp ESC's. For the same reasons, the 9T(4300kv) spins faster than the 8.5T(4000kv). It also follows that given the same or similar kv, a bigger and heavier rotor will produce more torque than a smaller and lighter one.
Given the same application, it would be erroneous to compare EZruns' 9T motor to their 8.5T motor.
I've actually examined these EZrun motors up close. Note that EZrun full turn motors, e.g. 9T, 13T, etc. are actually 380-400 size heavily finned bl motors that appear to be 540 size motors due to the exterior dimensions of their motor cans/casings. Their smaller and lighter rotors are the reason why they require only 35 amp ESC's. For the same reasons, the 9T(4300kv) spins faster than the 8.5T(4000kv). It also follows that given the same or similar kv, a bigger and heavier rotor will produce more torque than a smaller and lighter one.
Given the same application, it would be erroneous to compare EZruns' 9T motor to their 8.5T motor.
10-21-2009, 01:24 AM
#12
Originally Posted by don74
Just a heads up guys.
I've actually examined these EZrun motors up close. Note that EZrun full turn motors, e.g. 9T, 13T, etc. are actually 380-400 size heavily finned bl motors that appear to be 540 size motors due to the exterior dimensions of their motor cans/casings. Their smaller and lighter rotors are the reason why they require only 35 amp ESC's. For the same reasons, the 9T(4300kv) spins faster than the 8.5T(4000kv). It also follows that given the same or similar kv, a bigger and heavier rotor will produce more torque than a smaller and lighter one.
Given the same application, it would be erroneous to compare EZruns' 9T motor to their 8.5T motor.
I've actually examined these EZrun motors up close. Note that EZrun full turn motors, e.g. 9T, 13T, etc. are actually 380-400 size heavily finned bl motors that appear to be 540 size motors due to the exterior dimensions of their motor cans/casings. Their smaller and lighter rotors are the reason why they require only 35 amp ESC's. For the same reasons, the 9T(4300kv) spins faster than the 8.5T(4000kv). It also follows that given the same or similar kv, a bigger and heavier rotor will produce more torque than a smaller and lighter one.
Given the same application, it would be erroneous to compare EZruns' 9T motor to their 8.5T motor.
Wait a minute, the motor I have in my DF-03MS, which is a 4300Kv motor that came with the Ezrun V2 60A combo is a 380-size? Even with the fins, it doesn't seem like a 380, certainly the torque is there, it's almost as fast on the top-end speed as the previous motor, Castle's 4600Kv, and with slightly more torque... Note that I didn't change the gear ratio after the motor swap, left the same pinion/spur in my buggy... The 4300Kv just feels better, but it really feels like it belongs in my SC10 since the 4600Kv is in my SC10 now and it's too much of a motor...
Zerta: I don't think Novak's chart can be applied to every motor manufacturer's motors... You should check out Tekins, completely off-scale compared to Novak's.
10-21-2009, 02:58 AM
#13
Originally Posted by tom_chang79
Wait a minute, the motor I have in my DF-03MS, which is a 4300Kv motor that came with the Ezrun V2 60A combo is a 380-size? Even with the fins, it doesn't seem like a 380, certainly the torque is there, it's almost as fast on the top-end speed as the previous motor, Castle's 4600Kv, and with slightly more torque... Note that I didn't change the gear ratio after the motor swap, left the same pinion/spur in my buggy... The 4300Kv just feels better, but it really feels like it belongs in my SC10 since the 4600Kv is in my SC10 now and it's too much of a motor...
Zerta: I don't think Novak's chart can be applied to every motor manufacturer's motors... You should check out Tekins, completely off-scale compared to Novak's.
Zerta: I don't think Novak's chart can be applied to every motor manufacturer's motors... You should check out Tekins, completely off-scale compared to Novak's.
http://www.hobbywing.com/english/Art...?ArticleID=426
then yes it would be a 380 size motor. The most powerful 380 sized brushless motor I have used but a 380 sized motor nonetheless. Note that in the link it shows in the "Main Applications" section that the full turn ribbed motors are for 1/12-1/10 On-road use.
An EZrun 380 size motor will certainly run much better when paired to a 60A ESC rather than the 35A ESC that it was originally offered with. These 380 size motors will struggle when installed in the heavier trucks where true 540 size motors are required.
No worries though for you since it appears that you're enjoying a "freak" 380 size brushless motor.
10-21-2009, 07:23 AM
#14
Originally Posted by tom_chang79
Wait a minute, the motor I have in my DF-03MS, which is a 4300Kv motor that came with the Ezrun V2 60A combo is a 380-size? Even with the fins, it doesn't seem like a 380, certainly the torque is there, it's almost as fast on the top-end speed as the previous motor, Castle's 4600Kv, and with slightly more torque... Note that I didn't change the gear ratio after the motor swap, left the same pinion/spur in my buggy... The 4300Kv just feels better, but it really feels like it belongs in my SC10 since the 4600Kv is in my SC10 now and it's too much of a motor...
Zerta: I don't think Novak's chart can be applied to every motor manufacturer's motors... You should check out Tekins, completely off-scale compared to Novak's.
Zerta: I don't think Novak's chart can be applied to every motor manufacturer's motors... You should check out Tekins, completely off-scale compared to Novak's.
10-23-2009, 09:35 PM
#15
I read up on the ezrun's wherever I could before ordering. I just wanted something cheap that would make my cheap Evader scoot along better than a 19t motor. So I got the 35A 9T version.
I am VERY HAPPY with how fast and torquey it is! I've only ran a half pack thru of my 6 & 7 cell battery to try it out this evening, but so far it is GREAT.
Anyone know why the directions state the fan won't work with a 7 cell battery? It worked the little I used it.
I am VERY HAPPY with how fast and torquey it is! I've only ran a half pack thru of my 6 & 7 cell battery to try it out this evening, but so far it is GREAT.
Anyone know why the directions state the fan won't work with a 7 cell battery? It worked the little I used it.
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