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1/8 scale off-road Electrics

1/8 scale off-road Electrics

Old 01-20-2012, 11:04 AM
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Originally Posted by icefoxy01 View Post
Only glitch of the day is my front shock tower cracked after a spectacular mid-air collision with steven's buggy, the resulting cartwheels were too awesome for the buggy to handle

Looking forward to running again after CNY when everyone is more available ...Hopefully will see a few more buggies after CNY too heheh...
That "thing" was only a Hyper 10SC conversion with a 2S lipo!
I guess in the hands of this guy, anything can be lethal and you just found out the hard way.

So when you planning to run again?
Monday, Tuesday, or for some.. even Wednesday or the whole week is holiday break.

Originally Posted by davi View Post
salute that purple colour cam man, risking his life capturing the exciting moment, he can lost his foot or leg any time,

thank you for the nice video,
Thank u for the fun time
Actually, I'm more happy with him being there helping to pick up my overturned car...

Originally Posted by fuse01 View Post
wow super fast cars!

you all running 6s or what?
You need to dust off yours, they are not really that fast lah. It's just the size of the track made them looked quick.
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Old 01-21-2012, 12:04 AM
  #6587  
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hi guys , i miss out all the fun .....cos i came late.
hope to join u guys again....cheers.
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Old 01-21-2012, 05:00 AM
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Wish I could do that all week bro

I'll try and pop by again maybe mon or tues morning, weather permitting. If not, will see you guys on sun next week. You guys did a lot of nice vid editing, made my maiden buggy run look fast

Happy CNY guys! C u soon!
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Old 01-22-2012, 01:16 AM
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Default How hot is to hot brushless motor's

Couldn't find anything so I'm asking , how hot is to hot on a brushless motor. I want more top end on the hsp bazooka running 16 pinion. Should I increase one tooth at a time or two at a time ,there's a 80 a esc with it , and running twin 2s lipo's 14.8 v..
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Old 01-22-2012, 01:22 AM
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Originally Posted by bradley henry View Post
Couldn't find anything so I'm asking , how hot is to hot on a brushless motor. I want more top end on the hsp bazooka running 16 pinion. Should I increase one tooth at a time or two at a time ,there's a 80 a esc with it , and running twin 2s lipo's 14.8 v..
Nothing more than 80 degrees although some LHS will you their motor can take 100 degrees. How many kv is your motor?
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Old 01-22-2012, 03:04 AM
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Originally Posted by SuperEk4 View Post
Nothing more than 80 degrees although some LHS will you their motor can take 100 degrees. How many kv is your motor?
2400kv
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Old 01-22-2012, 03:06 AM
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Originally Posted by bradley henry View Post
2400kv
What is ur spur? Normally 15-16 pinion on 46-48 spur is already very fast on 4s.
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Old 01-22-2012, 03:08 AM
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Originally Posted by SuperEk4 View Post
What is ur spur? Normally 15-16 pinion on 46-48 spur is already very fast on 4s.
Yea not to bad getting better batteries so that might work still not that exciting top speed
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Old 01-22-2012, 03:10 AM
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Originally Posted by bradley henry View Post
Yea not to bad getting better batteries so that might work still not that exciting top speed
What batts r u using? I use zippy from hobby city to race n it's ok
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Old 01-22-2012, 03:15 AM
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Originally Posted by SuperEk4 View Post
What batts r u using? I use zippy from hobby city to race n it's ok
2x nanotechnology 5300 2s 14.8v but I haven't run there still in transit

Last edited by bradley henry; 01-22-2012 at 04:10 AM.
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Old 01-22-2012, 03:19 AM
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Originally Posted by bradley henry View Post
2x nanotechnology 5300 2s 14.8v
Ty reckon 100 kmph out of the box but I would sat around 70 - 80 klph
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Old 01-22-2012, 03:35 AM
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Originally Posted by bradley henry View Post
Ty reckon 100 kmph out of the box but I would sat around 70 - 80 klph
Then u need 6s. N be prepared to burn your esc n motor. Off road cars are not meant to do 100km.

I m driving a 1/8 on road Ep on 6s n I can do 100km/h but that's on road.
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Old 01-22-2012, 03:39 AM
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Originally Posted by SuperEk4 View Post
Then u need 6s. N be prepared to burn your esc n motor. Off road cars are not meant to do 100km.

I m driving a 1/8 on road Ep on 6s n I can do 100km/h but that's on road.
U seen the revo
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Old 01-22-2012, 06:32 AM
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Originally Posted by bradley henry View Post
Couldn't find anything so I'm asking , how hot is to hot on a brushless motor. I want more top end on the hsp bazooka running 16 pinion. Should I increase one tooth at a time or two at a time ,there's a 80 a esc with it , and running twin 2s lipo's 14.8 v..
How hot can your brushless motor operate before it fails will depends on your motor design. (95% of the brushless motor used for RC application will fail before it hit 100 degree C). In general, most people will keep their temperature below 90 degree C unless they know what motor design they have.

Below explanation may be too technical for some, but it helps in understanding what is too hot and what is not !

Some key factor that determines the max operating temperature of a brushless motor as as follows :

1. Type of magnet used and their rating. For example The maximum strength that can work at 100 degree C the N48M. The max at 120 degree C is N45H and the max at 150 degree C is N42SH. Higher grades are also available at temperatures up to 200 C.

2. Rotor design, some uses epoxy and some uses mechanical fitting to hold the magnet to the rotating shaft. Most epoxy used will starts to degrade at 100 degree C. Mechanical fitting will withstand much higher temperature.

3. The enameled wire. Depending on the type of insulation used, the enamel could start to break down at about 100 degree C.

4. Bearings and lubricant used. High speed bearings, ceramic bearings & etc. Most lubricant changes its properties drastically between typical room temperature and 160 degree C. When at high temperature, it losses its viscosity and the ability to lubricate.

I run my motor at 90 degree C but its capable of operating at 120 degree C.
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Old 01-22-2012, 02:01 PM
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Thumbs up Really big THANKYOU

Originally Posted by Rlau99 View Post
How hot can your brushless motor operate before it fails will depends on your motor design. (95% of the brushless motor used for RC application will fail before it hit 100 degree C). In general, most people will keep their temperature below 90 degree C unless they know what motor design they have.

Below explanation may be too technical for some, but it helps in understanding what is too hot and what is not !

Some key factor that determines the max operating temperature of a brushless motor as as follows :

1. Type of magnet used and their rating. For example The maximum strength that can work at 100 degree C the N48M. The max at 120 degree C is N45H and the max at 150 degree C is N42SH. Higher grades are also available at temperatures up to 200 C.

2. Rotor design, some uses epoxy and some uses mechanical fitting to hold the magnet to the rotating shaft. Most epoxy used will starts to degrade at 100 degree C. Mechanical fitting will withstand much higher temperature.

3. The enameled wire. Depending on the type of insulation used, the enamel could start to break down at about 100 degree C.

4. Bearings and lubricant used. High speed bearings, ceramic bearings & etc. Most lubricant changes its properties drastically between typical room temperature and 160 degree C. When at high temperature, it losses its viscosity and the ability to lubricate.

I run my motor at 90 degree C but its capable of operating at 120 degree C.
Well first of I like to say a big THANKYOU for taking the time to explain it . I was on another forum and all I got was smart arse comments eg ( plaig ) r/c so again I really appreciate your replies thanks mate .
The motor is a xk3665 turnigy 2400kv coupled with a 80 a ESC .

Last edited by bradley henry; 01-22-2012 at 02:04 PM. Reason: Missed out information
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