Ask Steve "The Evicerator" Weiss
#6361
The Evicerator
Gday Steve
Will the XBR ESC handle an 8.5 sintered SS motor? I want to upgrade the bonded rotor motor I have but wanted to make sure the ESC wont thermal, also what FDR do you recommend for the 8.5SS using the XBR, I just dont want to have to upgrade my ESC thats all.
Cheers
Adrian
Will the XBR ESC handle an 8.5 sintered SS motor? I want to upgrade the bonded rotor motor I have but wanted to make sure the ESC wont thermal, also what FDR do you recommend for the 8.5SS using the XBR, I just dont want to have to upgrade my ESC thats all.
Cheers
Adrian
Your XBR should be ok with the 8.5 SS w/ sintered rotor. As far as an FDR goes... I'd start out around 6.5 or so depending on your track size.
Good luck!
As far as I'm aware there's no rule saying you cannot run a receiver pack in your touring car
#6363
The Evicerator
Thanks J type!
Get your shocks all figured out?
Get your shocks all figured out?
#6365
The Evicerator
Well, when it comes to electronics cooler is usually better.
What you have to ask yourself is if you are noticing performance drop in your motor towards the later half of the run that are not associated with your battery pack falling off.
Does the motor feel sluggish off of corners...or do the brakes feel weaker as the run goes on... and when you come back do you have tons of run time left?
If so using a motor cooler will help keep your motor running more consistantly throughout the run... the total change in temperature over the run will probably be about the same... but if you start the motor off cooler it might not reach a higher temp that will cause the symptoms I mentioned earlier.
I do not recommend cooling your motor down and gearing up again to get back up into higher temperatures... The higher current draw will simply get you higher temperatures and pretty much back to where you started out
What you have to ask yourself is if you are noticing performance drop in your motor towards the later half of the run that are not associated with your battery pack falling off.
Does the motor feel sluggish off of corners...or do the brakes feel weaker as the run goes on... and when you come back do you have tons of run time left?
If so using a motor cooler will help keep your motor running more consistantly throughout the run... the total change in temperature over the run will probably be about the same... but if you start the motor off cooler it might not reach a higher temp that will cause the symptoms I mentioned earlier.
I do not recommend cooling your motor down and gearing up again to get back up into higher temperatures... The higher current draw will simply get you higher temperatures and pretty much back to where you started out
#6366
Tech Adept
Hello STEEEEEEEEEEEEEEEEEVVVVVEEEEEEEEEEEEEE!!!!!
Question???????????????? Besides chasing Squirals.
Cooling motors with these new deep freeze unit thats are out.
Have you done any testing to what might be happening to the rotor magnet?
With the two differant metals,One the rotor, Two the magnet, will they seperate from each other?
Question???????????????? Besides chasing Squirals.
Cooling motors with these new deep freeze unit thats are out.
Have you done any testing to what might be happening to the rotor magnet?
With the two differant metals,One the rotor, Two the magnet, will they seperate from each other?
#6367
The Evicerator
I've done track testing of cooling the motors with a pretty standard motor cooler... I have seen some that are MUCH bigger/stronger than the one I use... and I can't really comment on how they work being as that I really haven't used one extensively.
I don't think that there would be any harm in using these coolers... they are going to cool the motor down slow enough that it's not going to "shock" any of the metal parts inside into cracking or fatiguing... at least I wouldn't think so.
The problem might occur on the other side...when you are running the motor... under normal conditions I can't forsee problems...but if you're running the motor in an "abusive" manner... there possibly may be.
As far as the rotor materials... the magnet itself is a sintered neodymium compound ...and the hub material (with the shaft) is a steel compound. They are held together with a high temperature bonding agent (glue).
I don't think that there would be any harm in using these coolers... they are going to cool the motor down slow enough that it's not going to "shock" any of the metal parts inside into cracking or fatiguing... at least I wouldn't think so.
The problem might occur on the other side...when you are running the motor... under normal conditions I can't forsee problems...but if you're running the motor in an "abusive" manner... there possibly may be.
As far as the rotor materials... the magnet itself is a sintered neodymium compound ...and the hub material (with the shaft) is a steel compound. They are held together with a high temperature bonding agent (glue).
#6368
Tech Adept
Thanks Steve, The reason I ask is I've seen two rotors come together on a pit table and saw that one of the rotor crack the magnet off the shaft.
It spilt the magnet exposing the shaft.
I've used super high temps and subzero temps to weld parts together before,
but with "the with a high temperature bonding agent (glue)" I didn't know if they would come apart or not.
Thanks.
Hope to see you at the Birds again this year.
Kenny
It spilt the magnet exposing the shaft.
I've used super high temps and subzero temps to weld parts together before,
but with "the with a high temperature bonding agent (glue)" I didn't know if they would come apart or not.
Thanks.
Hope to see you at the Birds again this year.
Kenny
#6369
The Evicerator
Yeah, sometimes if the rotors snap together like that they can break... The magnetic material itself is relatively brittle and should be handled carefully.
I hope to see you at the Birds too! We'll see what happens!!
I hope to see you at the Birds too! We'll see what happens!!
#6370
Steve,
I just bought a used novak 3.5 motor. The motor seem to work fine only problem is the power it gives out is less than a friend's new novak 3.5 motor which is geared same as mine. Friend's motor has better punch and top speed. He is also using a GTB (like me too) and he is using old unmatched batteries (me using lipo). Wonder whether by changing the rotor, will it bring back the motor's previous glory? How is the performance of the 13mm rotor?
Thanks.
I just bought a used novak 3.5 motor. The motor seem to work fine only problem is the power it gives out is less than a friend's new novak 3.5 motor which is geared same as mine. Friend's motor has better punch and top speed. He is also using a GTB (like me too) and he is using old unmatched batteries (me using lipo). Wonder whether by changing the rotor, will it bring back the motor's previous glory? How is the performance of the 13mm rotor?
Thanks.
#6371
Tech Champion
iTrader: (32)
Steve,
I just bought a used novak 3.5 motor. The motor seem to work fine only problem is the power it gives out is less than a friend's new novak 3.5 motor which is geared same as mine. Friend's motor has better punch and top speed. He is also using a GTB (like me too) and he is using old unmatched batteries (me using lipo). Wonder whether by changing the rotor, will it bring back the motor's previous glory? How is the performance of the 13mm rotor?
Thanks.
I just bought a used novak 3.5 motor. The motor seem to work fine only problem is the power it gives out is less than a friend's new novak 3.5 motor which is geared same as mine. Friend's motor has better punch and top speed. He is also using a GTB (like me too) and he is using old unmatched batteries (me using lipo). Wonder whether by changing the rotor, will it bring back the motor's previous glory? How is the performance of the 13mm rotor?
Thanks.
#6372
The Evicerator
birdman,
It's hard to say... but is your friend running the same rotor as you...? If he's running a 13.0 mm it might run different than your motor.
What are you guys geared?
Are you running 5 or 6 cell?
It's hard to say... but is your friend running the same rotor as you...? If he's running a 13.0 mm it might run different than your motor.
What are you guys geared?
Are you running 5 or 6 cell?
#6373
thanks
#6375
The Evicerator
I'm not sure... if you can find me the internal drive ratio of your car I can figure it out from there...but more than likely you're going to have to gear up on the pinion some more.