R/C Tech Forums

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

Reply
 
Thread Tools Search this Thread
Old 05-05-2010, 08:31 PM   #14446
Tech Fanatic
 
Join Date: Oct 2005
Location: Illinois
Posts: 906
Trader Rating: 16 (100%+)
Default

Side note: There were SEVERAL updates to most of the different Spektrum Rx's. I use the older micro Spektrum RX. So far (knock on wood), I have had no issues with them. My grey case ones worked great when they were all updated. All but one, are long gone now though.
__________________
www.TheRcShack.com
www.TeamXray.com
Spdjunky is offline   Reply With Quote
Old 05-05-2010, 08:59 PM   #14447
Tech Fanatic
 
Join Date: Oct 2005
Location: Illinois
Posts: 906
Trader Rating: 16 (100%+)
Default

Quote:
Originally Posted by goose510 View Post
Pretty much I had ran the batteries before on a spx 13.5 combo before several times with no problem. I installed a tekin rs 17.5 system and had one day of practice on it before the day this happened. I charged and stored my lipos as I always do. A week went by I checked my lipos in the morning on Sunday in preparation for some club racing. I run the first qualifier and during warm up it was fine. In the middle of the race I noticed the car was really show and could not feel the boost kicking in. I didn't think anything of it. I pulled the car off and took off the shell on my car to realize that my thunderpower lipo had puffed up. It literally tore the sticker on the seem from puffing so much. I checked my temps when I pulled the car off and it was around 160. Went to run a second heat and in the warm up felt the same lack of power pulled it off to see my second lipo was also puffed up. I always monitor my lipos when charging and both were fine before I put them in my tc to run the qualifiers. I have thoroughly checked my charger and it charges just fine. Does not overcharge at all. Which is why I am at a loss when trying to figure out whats going on. The esc is the only other explanation.
Can I ask what charger you were using?

I just read on another thread where people were complaining about SMC packs puffing up at random. Can't remember about Thunderpower. Usually they are good packs....

Double check all your connectors, make sure A goes to A etc. Make sure no solder is over lapping on the post also. Cap on the right posts?
If all that is okay, I would be tempted to send it in to Tekin to review. The only thing that could drain a lipo that fast is a short for the windings. Unless you have the proper equipement to check it under load

Any one else with some ideas?
__________________
www.TheRcShack.com
www.TeamXray.com
Spdjunky is offline   Reply With Quote
Old 05-05-2010, 09:25 PM   #14448
Tech Addict
 
Join Date: Jan 2010
Location: San Leandro, CA
Posts: 699
Trader Rating: 65 (100%+)
Default

Quote:
Originally Posted by Spdjunky View Post
Can I ask what charger you were using?

I just read on another thread where people were complaining about SMC packs puffing up at random. Can't remember about Thunderpower. Usually they are good packs....

Double check all your connectors, make sure A goes to A etc. Make sure no solder is over lapping on the post also. Cap on the right posts?
If all that is okay, I would be tempted to send it in to Tekin to review. The only thing that could drain a lipo that fast is a short for the windings. Unless you have the proper equipement to check it under load

Any one else with some ideas?
Yeah I am using a onyx 230. I manually checked the job it was doing when charging a buddies lipo and it did just fine. I checked countless times all of the settings and wires to make sure I didn't cross any wires. Nothing is frayed and I have not had any hard hits. I guess I have to send it in! Maybe they can find something going on. Thanks to all that have been trying to help!!
goose510 is offline   Reply With Quote
Old 05-05-2010, 09:35 PM   #14449
Tech Fanatic
 
Join Date: Oct 2005
Location: Illinois
Posts: 906
Trader Rating: 16 (100%+)
Default

goose510,

I would tend to lean toward the ESC and heres why.

IF the cutoff was set right, the esc would've stopped running if the battery wasn't full. This eliminates the charger.

A puffed pack would mean an extremely high discharge rate IMO, not just a low pack that went below 6.4 volts.
__________________
www.TheRcShack.com
www.TeamXray.com
Spdjunky is offline   Reply With Quote
Old 05-05-2010, 09:46 PM   #14450
Tech Fanatic
 
Join Date: Oct 2005
Location: Illinois
Posts: 906
Trader Rating: 16 (100%+)
Default

Goose, were you running a balancer with the Onyx 230?
__________________
www.TheRcShack.com
www.TeamXray.com
Spdjunky is offline   Reply With Quote
Old 05-05-2010, 09:51 PM   #14451
Tech Addict
 
Join Date: Jan 2010
Location: San Leandro, CA
Posts: 699
Trader Rating: 65 (100%+)
Default

Quote:
Originally Posted by Spdjunky View Post
Goose, were you running a balancer with the Onyx 230?
Yeah I was using a friends. I forget the brand. Thats what a few folks were telling me at my local track. They said there may be a possible malfunction on the part of the esc or the motor. Before the motor would not be an issue but with the power these Tekins dish out the 17.5 almost runs like mod class. I guess I have to send it in and see what the folks at Tekin have to say. I just figure the Tekin system is pulling to much power and puffing up the lipos.
goose510 is offline   Reply With Quote
Old 05-05-2010, 10:22 PM   #14452
Tech Addict
 
Join Date: Jun 2007
Location: Bay Area, CA
Posts: 742
Trader Rating: 17 (100%+)
Send a message via AIM to DJGonzo69
Default

Randy- I saw the approved ROAR list for the Sportsman ESC for the Nats.
The Tekin RS is on the list as long as you have the v208 software. When will this software version be released.
Thx,
John
__________________
|XRAY|RCAmerica|Hobbywing|KO PROPO|Team Scream Motors|Gonzo PaintWorX|
DJGonzo69 is offline   Reply With Quote
Old 05-05-2010, 10:50 PM   #14453
Tech Champion
 
Still Bill's Avatar
 
Join Date: Jan 2004
Location: Reno, NV
Posts: 7,237
Trader Rating: 12 (100%+)
Default

Quote:
Originally Posted by goose510 View Post
My cutoff is set at 3.2. The person that setup my rs has done so for countless others and is a local pro. I didn't think it could blow up two lipos but they both happened on the same day. My temps never reach over 160. I am just at a loss. Are there any recommendations that you can give me. I can't go back to my lrp spx at this point. Not after feeling the power of the tekin. I have been trying to get into electric but it is just too expensive when stuff like this happens.
goose,

I do not understand your "3.2" response. The available settings for Voltage Cutoff are:

1 = None (LED 1 ON)
2 = 6 volts (LED 1-2 ON)
3 = 9 volts (LED 1-3 ON)
4 = Custom (LED 1-4 ON)

Accordingly, I use "1" for single cell pan cars and "2" for two cell TC racing. With that "1" setting, I cannot run the car for too long because there is effectively no voltage cutoff with that setting. With the "2" setting, the car will shutdown after you reach 6V (maybe 10-12 minutes); but, that long of a extended run can overheat your motor under certain conditions. Therefore, I never do runs lasting more than a minute or two beyond a normal timed race (*6 min for my TC/WGT classes).

Can that "pro" check the settings he originally used on your RS to make sure that the Voltage Cutoff is truly set properly?

Hopefully, no one else has posted the above. I am behind a couple pages of posts...LOL

Bill
__________________
Constantly evolving CRC WGT and WGT-R/T...Carpet & Asphalt...All thanks to Team CRC.

And a pair of Associated B6 buggies for turf and clay tracks.
Still Bill is offline   Reply With Quote
Old 05-05-2010, 11:06 PM   #14454
Tech Elite
 
pakk's Avatar
 
Join Date: Mar 2009
Posts: 3,077
Trader Rating: 79 (100%+)
Default

Quote:
Originally Posted by Still Bill View Post
goose,

I do not understand your "3.2" response. The available settings for Voltage Cutoff are:

1 = None (LED 1 ON)
2 = 6 volts (LED 1-2 ON)
3 = 9 volts (LED 1-3 ON)
4 = Custom (LED 1-4 ON)

Accordingly, I use "1" for single cell pan cars and "2" for two cell TC racing. With that "1" setting, I cannot run the car for too long because there is effectively no voltage cutoff with that setting. With the "2" setting, the car will shutdown after you reach 6V (maybe 10-12 minutes); but, that long of a extended run can overheat your motor under certain conditions. Therefore, I never do runs lasting more than a minute or two beyond a normal timed race (*6 min for my TC/WGT classes).

Can that "pro" check the settings he originally used on your RS to make sure that the Voltage Cutoff is truly set properly?

Hopefully, no one else has posted the above. I am behind a couple pages of posts...LOL

Bill
You can set your LVC to a custom voltage. In his case, it is being set to 3.2. That means the ESC will shut down when it gets to 3.2v total. That is regardless of the pack being 1s, 2s, 3s, etc.... So if you are running your LVC to 3.2 and you are running a 2s pack. You are pretty much not running a LVC. That will get you down to 1.6 per cell.
__________________
*Photon* *SC10 4x4*
RCRD
pakk is offline   Reply With Quote
Old 05-05-2010, 11:08 PM   #14455
Tech Elite
 
pakk's Avatar
 
Join Date: Mar 2009
Posts: 3,077
Trader Rating: 79 (100%+)
Default

Quote:
Originally Posted by DJGonzo69 View Post
Randy- I saw the approved ROAR list for the Sportsman ESC for the Nats.
The Tekin RS is on the list as long as you have the v208 software. When will this software version be released.
Thx,
John
Is 208 just going to have all timing advances disabled and the blinking LED for quick id?
__________________
*Photon* *SC10 4x4*
RCRD
pakk is offline   Reply With Quote
Old 05-05-2010, 11:08 PM   #14456
Tech Champion
 
Still Bill's Avatar
 
Join Date: Jan 2004
Location: Reno, NV
Posts: 7,237
Trader Rating: 12 (100%+)
Default That's it!

Quote:
Originally Posted by reenmachine View Post
If your lipo cutoff is truly set to 3.2 in the numerical field above the slider (custom setting) then there's the problem. When Bill referred to a setting of "2" that is on the slider, which means 2-cell, which is 6.0V. A custom setting of 3.2 would be a "conservative" choice only for someone running 1-cell lipo.
reenmachine,

BINGO! I did not know the custom settings aspect.

goose,

That is your problem!

I highly suggest that you find someone else to set your ESC properly.

Unfortunately, not a lot a drivers are actually "pros" at RS ESCs. Seeking out an "advanced tuner" would be appropriate if one exists in your area. In the SF Bay Area, I was fortunate enough to find the right pro that helped me with my initial WGT ESC setup. theisgroup (Yang) is also a great source for single cell applications. From that experience, I was able to figure out my own RS setup for TC (two cell).

Bill
__________________
Constantly evolving CRC WGT and WGT-R/T...Carpet & Asphalt...All thanks to Team CRC.

And a pair of Associated B6 buggies for turf and clay tracks.

Last edited by Still Bill; 05-05-2010 at 11:52 PM.
Still Bill is offline   Reply With Quote
Old 05-05-2010, 11:10 PM   #14457
Tech Champion
 
Still Bill's Avatar
 
Join Date: Jan 2004
Location: Reno, NV
Posts: 7,237
Trader Rating: 12 (100%+)
Default

OK pakk,

Kudos to you too. See ya at da track.

Bill
__________________
Constantly evolving CRC WGT and WGT-R/T...Carpet & Asphalt...All thanks to Team CRC.

And a pair of Associated B6 buggies for turf and clay tracks.
Still Bill is offline   Reply With Quote
Old 05-05-2010, 11:41 PM   #14458
Tech Elite
 
-WHEELMAN-'s Avatar
 
Join Date: Apr 2009
Location: Redlands, California
Posts: 4,506
Trader Rating: 266 (98%+)
Default

2.03 tomorrow for a b44 6.5 on a high bite track 115 foot straight. Any reccomendations?
__________________
BRETT T. RICHARDS = SUPPORT YOUR TROOPS, LOCAL TRACKS AND HOBBY SHOPS OR THEY COULD ALL BE GONE ONE DAY!
-WHEELMAN- is offline   Reply With Quote
Old 05-06-2010, 02:51 AM   #14459
Tech Addict
 
Join Date: Jan 2010
Location: San Leandro, CA
Posts: 699
Trader Rating: 65 (100%+)
Default

Quote:
Originally Posted by Still Bill View Post
reenmachine,

BINGO! I did not know the custom settings aspect.

goose,

That is your problem!

I highly suggest that you find someone else to set your ESC properly.

Unfortunately, not a lot a drivers are actually "pros" at RS ESCs. Seeking out an "advanced tuner" would be appropriate if one exists in your area. In the SF Bay Area, I was fortunate enough to find the right pro that helped me with my initial WGT ESC setup. theisgroup (Yang) is also a great source for single cell applications. From that experience, I was able to figure out my own RS setup for TC (two cell).

Bill
I will check the settings tomorrow but I still can't see how I could have drained so much after a 6 minute run even if the settings are below 6v. In theory don't I have to run it for at least 10-12 minutes or more before I drained so much of the lipo? And sorry if I ask dumb questions I am completely new to electric and am trying to learn all I can.
goose510 is offline   Reply With Quote
Old 05-06-2010, 05:18 AM   #14460
Tech Lord
 
20 SMOKE's Avatar
 
Join Date: Dec 2003
Location: HVR_ WEEKI WACHEE FL
Posts: 10,299
Trader Rating: 101 (100%+)
Default

Quote:
Originally Posted by -WHEELMAN- View Post
2.03 tomorrow for a b44 6.5 on a high bite track 115 foot straight. Any reccomendations?
dual mode 60-70 timing advance 17/84
__________________
Jamie W
*Team Tekin*Tekno-rc*DE Racing*AKA*DDHRC*
20 SMOKE is offline   Reply With Quote
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
Tekin Redline RS Sensored ESC and motors, opinions for offroad? Cain Electric Off-Road 4230 06-07-2015 04:38 PM
Sensored vs. Sensorless lemansracer Electric On-Road 71 02-14-2009 03:19 AM
New Tekin Redline Sensored Motors are Roar Legal! Randy_Pike Electric On-Road 3 08-05-2008 02:08 AM
Tekin Redline Sensored 10.5 HUCKMAN Electric On-Road 6 07-15-2008 08:50 PM
sensored vs sensorless bprocket Rookie Zone 5 05-16-2008 09:38 AM


Tags
v203, vegas 2.0


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 06:28 AM.


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