R/C Tech Forums

Go Back   R/C Tech Forums > General Forums > Electric On-Road

Reply
 
Thread Tools Search this Thread
Old 01-31-2008, 05:02 AM   #5851
The Evicerator
R/C Tech Elite Subscriber
 
Join Date: Sep 2001
Location: Irvine, CA
Posts: 4,142
Default

Hi Adrian,

The problem with bonded rotor is that once you overheat them they weaken and become much more susceptable to overheating/weakening even more.

I'd suggest getting a new rotor and starting out at 6.0 to be conservative... I would run the system for a few minutes and check the motor temp... I would recommend trying to keep the temps under 160. If the temps look to be ok you can gear up a tooth at a time until you get to a speed / temperature that you feel comfortable with.

As far as the timing thing there's no magic to the timing getting rid of thermalling... it can change the power band a little bit which might be able to help you get geared right though.


Quote:
Originally Posted by vazzo View Post
Hi Steve

Thanks for your help with the previous motor question, I have another sorry.

I currently use the 13.5 EX as our governing body hasnt approved the use of sintered rotors as yet. The problem I have with this motor is overheating. I just ruined a motor and i was running an FDR of 5.16 then 5.48 then 5.85 to reduce heat and the thermal overload protection kept kicking in forcing me out of the race. I also had lipo cutoff and maximum drag brake applied to the XBR speedie, do these cause excessive heating when applied? Do you have any suggestions on gearing for the cyclone with the EX motor? I was going to use a 72 spur and 32 pinion which gives me a 36 rollout and 5.48 FDR, but I'm not sure anymore lol. I just purchased a new EX 13.5 for stock and also an SS 13.5 pro to run in 19 turn but want to make sure I set them correctly so I dont kill another motor. I've heard of a trick to do with the EX motors by adjusting the timing ring ever so slightly and it stops the thermalling but not sure of how to do it or even if it works.

Look forward to your response.

Cheers again
Adrian
__________________
Steve Weiss
TEAM ASSOCIATED -- REEDY -- SANWA -- PROTOFORM -- 1UP Racing -- ActivRC -- P1 BRAND -- TEAM KINWALD -- TEAM STEVE INTERNATIONAL
Steve Weiss is offline   Reply With Quote
Old 01-31-2008, 08:08 AM   #5852
Tech Master
 
Join Date: May 2003
Location: SAN DIEGO
Posts: 1,126
Trader Rating: 62 (100%+)
Default

Hi Steve.
patrick is offline   Reply With Quote
Old 01-31-2008, 08:28 AM   #5853
Tech Master
 
tfrahm's Avatar
 
Join Date: Aug 2001
Location: Missouri
Posts: 1,026
Trader Rating: 2 (100%+)
Send a message via AIM to tfrahm
Default

A question for the Novak experts...:

Last night, during the 4-cell 13.5 Oval A-main, a car spun out in front of me (while I was in the lead, of course!) and we hit head-on. The other car sort of bounced out of my way, and I went on.... Sort of.... My car was slow and really sounded weird...

I ran one lap and pulled the car off -- a quick inspection showed that one of the three motor power wires had come off in the wreck (the blue one if it matters). At home, after the races, I resoldered the wire onto the motor and everything seems OK..

?? Is there any chance of damage to the motor ??

(I never dreamed the motor would run on 2 out of 3 wires! -- For the record, once I got the car off the track, it would NOT run, but prior to that, it did complete about a lap and a half getting back to where I could pull it off... And, as noted above, after resoldering the wire, everything seems OK...)
__________________
"If you cannot win, make the one ahead of you break the record."
Biff Racing Team #420 (Ah... The "good old days"...)
The local indoor Offroad Track: The RC Race Barn
TLR22-3.0, TLR22T-2.0, TLR22SCT-1.0
tfrahm is offline   Reply With Quote
Old 02-01-2008, 03:09 PM   #5854
Tech Regular
 
Lars Johnson's Avatar
 
Join Date: Jul 2003
Location: Denver, CO
Posts: 486
Trader Rating: 5 (100%+)
Send a message via AIM to Lars Johnson
Default

if you beat MX-51 in touring outlaw this weekend, i'll be sure to throw you a light switch rave next time i see ya.
__________________
Team Associated / Reedy / AKA / Futaba / OS Engines / Byrons Fuel / www.steelescycle.com
Lars Johnson is offline   Reply With Quote
Old 02-01-2008, 03:49 PM   #5855
Tech Fanatic
 
fatbear's Avatar
 
Join Date: Nov 2003
Location: Perth, Western Australia
Posts: 811
Trader Rating: 10 (100%+)
Send a message via Yahoo to fatbear
Default

My GTB is setup for a brushed motor. When I switch on the speed controller the motor runs flat out for about 3-4 seconds then goes to neutral and is fine. Is this normal? What can I do to correct it?
fatbear is offline   Reply With Quote
Old 02-01-2008, 06:37 PM   #5856
The Evicerator
R/C Tech Elite Subscriber
 
Join Date: Sep 2001
Location: Irvine, CA
Posts: 4,142
Default

Hi Patrick!

Quote:
Originally Posted by patrick View Post
Hi Steve.
__________________
Steve Weiss
TEAM ASSOCIATED -- REEDY -- SANWA -- PROTOFORM -- 1UP Racing -- ActivRC -- P1 BRAND -- TEAM KINWALD -- TEAM STEVE INTERNATIONAL
Steve Weiss is offline   Reply With Quote
Old 02-01-2008, 06:42 PM   #5857
The Evicerator
R/C Tech Elite Subscriber
 
Join Date: Sep 2001
Location: Irvine, CA
Posts: 4,142
Default

There's very little chance of damage from the wire coming undone from the motor... the damage might have occured from the excessive heating needed to melt solder enough that it would come undone.

I would open up the motor and check iout to make sure that none of the wires look charred or melted together.

Quote:
Originally Posted by tfrahm View Post
A question for the Novak experts...:

Last night, during the 4-cell 13.5 Oval A-main, a car spun out in front of me (while I was in the lead, of course!) and we hit head-on. The other car sort of bounced out of my way, and I went on.... Sort of.... My car was slow and really sounded weird...

I ran one lap and pulled the car off -- a quick inspection showed that one of the three motor power wires had come off in the wreck (the blue one if it matters). At home, after the races, I resoldered the wire onto the motor and everything seems OK..

?? Is there any chance of damage to the motor ??

(I never dreamed the motor would run on 2 out of 3 wires! -- For the record, once I got the car off the track, it would NOT run, but prior to that, it did complete about a lap and a half getting back to where I could pull it off... And, as noted above, after resoldering the wire, everything seems OK...)
__________________
Steve Weiss
TEAM ASSOCIATED -- REEDY -- SANWA -- PROTOFORM -- 1UP Racing -- ActivRC -- P1 BRAND -- TEAM KINWALD -- TEAM STEVE INTERNATIONAL
Steve Weiss is offline   Reply With Quote
Old 02-01-2008, 06:43 PM   #5858
The Evicerator
R/C Tech Elite Subscriber
 
Join Date: Sep 2001
Location: Irvine, CA
Posts: 4,142
Default

Sounds good to me!

Quote:
Originally Posted by Lars Johnson View Post
if you beat MX-51 in touring outlaw this weekend, i'll be sure to throw you a light switch rave next time i see ya.
__________________
Steve Weiss
TEAM ASSOCIATED -- REEDY -- SANWA -- PROTOFORM -- 1UP Racing -- ActivRC -- P1 BRAND -- TEAM KINWALD -- TEAM STEVE INTERNATIONAL
Steve Weiss is offline   Reply With Quote
Old 02-01-2008, 06:45 PM   #5859
The Evicerator
R/C Tech Elite Subscriber
 
Join Date: Sep 2001
Location: Irvine, CA
Posts: 4,142
Default

Are you using some sort of DSM radio system? It might be that the receiver's fail-safe signal is set up for some amount of throttle...

The ESC only does what it is told... if the ESC itself is not receiving a valid signal it will display a red and green LED.

Quote:
Originally Posted by fatbear View Post
My GTB is setup for a brushed motor. When I switch on the speed controller the motor runs flat out for about 3-4 seconds then goes to neutral and is fine. Is this normal? What can I do to correct it?
__________________
Steve Weiss
TEAM ASSOCIATED -- REEDY -- SANWA -- PROTOFORM -- 1UP Racing -- ActivRC -- P1 BRAND -- TEAM KINWALD -- TEAM STEVE INTERNATIONAL
Steve Weiss is offline   Reply With Quote
Old 02-01-2008, 08:26 PM   #5860
Tech Master
 
tfrahm's Avatar
 
Join Date: Aug 2001
Location: Missouri
Posts: 1,026
Trader Rating: 2 (100%+)
Send a message via AIM to tfrahm
Default

Quote:
Originally Posted by Steve Weiss View Post
There's very little chance of damage from the wire coming undone from the motor... the damage might have occured from the excessive heating needed to melt solder enough that it would come undone.
Just FWIW -- The motor wire didn't "melt" loose, the head-on impact knocked it loose... The motor temped at 113 degrees on the label (I've found that to be the most reliable place to temp the motor -- the polished aluminum areas always measure low...)

I'll double check the motor before next week's races "just in case"...
__________________
"If you cannot win, make the one ahead of you break the record."
Biff Racing Team #420 (Ah... The "good old days"...)
The local indoor Offroad Track: The RC Race Barn
TLR22-3.0, TLR22T-2.0, TLR22SCT-1.0
tfrahm is offline   Reply With Quote
Old 02-02-2008, 02:19 AM   #5861
The Evicerator
R/C Tech Elite Subscriber
 
Join Date: Sep 2001
Location: Irvine, CA
Posts: 4,142
Default

Sorry I got that mixed up... I'm pretty well sleep deprived at the moment at Snowbirds

I'm doin' my best here!

Quote:
Originally Posted by tfrahm View Post
Just FWIW -- The motor wire didn't "melt" loose, the head-on impact knocked it loose... The motor temped at 113 degrees on the label (I've found that to be the most reliable place to temp the motor -- the polished aluminum areas always measure low...)

I'll double check the motor before next week's races "just in case"...
__________________
Steve Weiss
TEAM ASSOCIATED -- REEDY -- SANWA -- PROTOFORM -- 1UP Racing -- ActivRC -- P1 BRAND -- TEAM KINWALD -- TEAM STEVE INTERNATIONAL
Steve Weiss is offline   Reply With Quote
Old 02-03-2008, 11:02 PM   #5862
Tech Champion
 
Scottrik's Avatar
 
Join Date: Sep 2004
Location: Billings, MT
Posts: 6,212
Trader Rating: 245 (100%+)
Default

How is it possible we've made it ALMOST all day without this:

HAPPY BIRTHDAY STEVE!!

Geez, wish I was only "almost thirty" again...

Hope the day was a good one, whatever you chose to do!
__________________
Congressmen should wear uniforms like NASCAR drivers so we can identify their corporate sponsors.

THE REVOLUTION WILL NOT BE TELEVISED -Gil Scott-Heron (1949-2011)
Scottrik is offline   Reply With Quote
Old 02-04-2008, 01:18 AM   #5863
Tech Fanatic
 
fatbear's Avatar
 
Join Date: Nov 2003
Location: Perth, Western Australia
Posts: 811
Trader Rating: 10 (100%+)
Send a message via Yahoo to fatbear
Default

Quote:
Originally Posted by Steve Weiss View Post
Are you using some sort of DSM radio system? It might be that the receiver's fail-safe signal is set up for some amount of throttle...

The ESC only does what it is told... if the ESC itself is not receiving a valid signal it will display a red and green LED.

Yeah, it is a DSM radio and reciever. I have done some playing around and re set everything.
Now sometimes when I switch on it acts normal and sometimes when I switch on there is still maybe 1-2 secs of full throttle.
It seems to be a little bit random.
I haven't got to the track yet with it to test it out. Hopefully all is ok on the track.
fatbear is offline   Reply With Quote
Old 02-05-2008, 10:47 AM   #5864
Regional Moderator
 
CarbonJoe's Avatar
 
Join Date: Jul 2006
Posts: 2,661
Default

Quote:
Originally Posted by Steve Weiss View Post
Hey Joe,

I asked the girls in charge of the website to add some information allready...but I gues they haven't gotten around to it.... I'll try to get on them about it next week after I come back from the birds.
Steve -

Any word on the updated Gearing Ratios / Rollouts for the 17.5?
__________________
*** The Gate - Celebrating 8 years at the same location ***
The difference between genius and stupidity is that genius has its limits. - Albert Einstein
Understeer is when you hit the wall with the front of the car and oversteer is when you hit the wall with the rear of the car
CarbonJoe is offline   Reply With Quote
Old 02-08-2008, 09:33 AM   #5865
The Evicerator
R/C Tech Elite Subscriber
 
Join Date: Sep 2001
Location: Irvine, CA
Posts: 4,142
Default

Hey Fatbear... any more updates on your problem?

Carbon ... I believe they have updated the website!
__________________
Steve Weiss
TEAM ASSOCIATED -- REEDY -- SANWA -- PROTOFORM -- 1UP Racing -- ActivRC -- P1 BRAND -- TEAM KINWALD -- TEAM STEVE INTERNATIONAL
Steve Weiss is offline   Reply With Quote
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
STUFF FOR SALE """"LQQK """" EZRC R/C Items: For Sale/Trade 1 03-13-2007 07:20 PM
"""NEW""" Collari .21 3 port buggy motor lc21-b3 goneRVing R/C Items: For Sale/Trade 7 12-20-2006 06:25 PM
STUFF FOR SALE """"LQQK """" EZRC R/C Items: For Sale/Trade 11 10-22-2006 09:49 PM
""" XRAY FK05 """ excellent cond/super clean/stock evostyle R/C Items: For Sale/Trade 9 06-29-2006 10:04 PM
Let's send Steve Weiss (Evicerator) to Cleveland!!! TeamButter Electric On-Road 8 11-02-2004 11:32 PM



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are Off



All times are GMT -7. It is currently 07:23 PM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
Powered By: vBulletin v3.9.2.1
Privacy Policy | Terms of Use | Advertise Content © 2001-2011 RCTech.net