Go Back  R/C Tech Forums > General Forums > Electric Off-Road
Losi 1/10 TEN-SCTE ARR 4x4 Short Course Truck Thread >

Losi 1/10 TEN-SCTE ARR 4x4 Short Course Truck Thread

Like Tree9Likes

Losi 1/10 TEN-SCTE ARR 4x4 Short Course Truck Thread

Old 07-11-2011, 12:28 PM
  #14311  
Tech Elite
iTrader: (42)
 
Asharus's Avatar
 
Join Date: Apr 2011
Location: Long Island, NY
Posts: 3,123
Trader Rating: 42 (100%+)
Default

Originally Posted by Semple View Post
Has anyone really struggled with temperatures and run-time? I'm running the RX8 with a conservative setup(current limiter @ 75-80%, 10 timing advance, etc) and using both the Tekin SC4X 4.5 and Novak Ballistic 4.5 motors with 13, 14, 15t pinions with 2s 5200mah 40c packs and experiencing a lot of heat and very poor run times. For instance, running the Tekin 4.5(13t), I hit cutoff at about 7 minutes, with my esc at 140 and motor at 175-190. With the Ballistic 4.5t, I made 8-ish minutes with a 15t at almost 200 on the motor, 150 on the esc. In the main I tried to run really conservatively with the Ballistic on 13t, and I hit cutoff at about 9 minutes. The pack took full capacity in the following charge.

The bummer is that I TQ'd 3 out of 4 rounds of qualifying averaging 3 sec faster per lap than the rest of the field(I just dicked around and had fun in the 4th round). Quals were 5 minutes and I made that no problem, gear was still hot.

Any suggestions would be appreciated!
What's your ambient temperature? I run a 5.5 Ballistic 550 and barely hit 160 after an 8 min main. I'm running a 15T, no current limiting, 0 timing. Your ESC is getting pretty hot too, mine comes off at 118, and the fan will turn off about 30-60 seconds after I pull it off the track.

I think I remember reading futher back that someone running a 4.5 had their CL at 50%, maybe you just need to back it down a bit more.

This is why I went with a 5.5, I didn't want to have to cut a motor's balls off just to prevent it from going thermal.

Edit: Make sure you have no drag brakes.
Asharus is offline  
Old 07-11-2011, 12:31 PM
  #14312  
Tech Master
iTrader: (41)
 
RACETEK's Avatar
 
Join Date: Oct 2002
Location: Irving, Tx
Posts: 1,253
Trader Rating: 41 (100%+)
Default

Contact http://www.impressdesigns.com in Dallas. They make all my stickers and do a fantastic job..
Just an example.. The body is painted but the sticks are from them...
RACETEK is offline  
Old 07-11-2011, 12:33 PM
  #14313  
Tech Fanatic
iTrader: (24)
 
Join Date: Nov 2010
Location: Grand Rapids, MI
Posts: 832
Trader Rating: 24 (100%+)
Default

Originally Posted by Buzz3 View Post
I added the 14mm rotor and can go ten minutes on a 6000 mah for whatever that's worth. I also see heat (175-185) but never thermal.
Clean all the drivetrain bearings and use some good bearing lube.....makes it much more free. Also use Mobile 1 synthetic grease on the ring and pinion vs. the stock stuff. Make sure you're not running drag brake. Last week the outdoor conditions were 90-95 degrees I'm running the Rx8 and tekin 4.5 motor...ESC temp 115 and motor 144-156...large loose track, 15 pinion.
kerby is offline  
Old 07-11-2011, 12:33 PM
  #14314  
Tech Champion
iTrader: (25)
 
losi_racer's Avatar
 
Join Date: Nov 2008
Location: mesa,az
Posts: 6,470
Trader Rating: 25 (100%+)
Default

Originally Posted by Semple View Post
Has anyone really struggled with temperatures and run-time? I'm running the RX8 with a conservative setup(current limiter @ 75-80%, 10 timing advance, etc) and using both the Tekin SC4X 4.5 and Novak Ballistic 4.5 motors with 13, 14, 15t pinions with 2s 5200mah 40c packs and experiencing a lot of heat and very poor run times. For instance, running the Tekin 4.5(13t), I hit cutoff at about 7 minutes, with my esc at 140 and motor at 175-190. With the Ballistic 4.5t, I made 8-ish minutes with a 15t at almost 200 on the motor, 150 on the esc. In the main I tried to run really conservatively with the Ballistic on 13t, and I hit cutoff at about 9 minutes. The pack took full capacity in the following charge.

The bummer is that I TQ'd 3 out of 4 rounds of qualifying averaging 3 sec faster per lap than the rest of the field(I just dicked around and had fun in the 4th round). Quals were 5 minutes and I made that no problem, gear was still hot.

Any suggestions would be appreciated!
Problem is the motor .a 4.5 is awesome but you have to gear it so low to get the temps down you might as well got a 5.5. Also with a bigger motor it uses more juice so less run time,but also a 5200, is on the low side for pro .4 .depending on the track
With my 5600/65 c bat 5.5 motor with 15 t pinion I temp 155 and 12 min on small track 9-10 on a big open track .
losi_racer is offline  
Old 07-11-2011, 12:34 PM
  #14315  
Tech Elite
iTrader: (15)
 
heavyjeffd's Avatar
 
Join Date: Mar 2010
Posts: 2,805
Trader Rating: 15 (100%+)
Default

I'm running an RX8 with a Havoc 4.5 (was running an SC4X 4.5 before, but it just stopped working, Tekin replaced it under warranty, never had any heat problems with it really).

The ambient temp in south Texas is well... retardedly hot. It hit 108F during practice this past Friday.

After a 5 min qual my truck came off at about 120F on the ESC and about 145F on the motor. My SC4X showed the same temps.

I'm running no timing, current limit is at 80%, with a 12T pinion, no drag brake. I've had more than enough motor for every track I've been to (including big outdoor 1/8th scale tracks).

Make sure your drive train is free and your mesh isn't too tight or it will definitely overheat your motor. A friend of mine had really bad overheating issues and it just turned out to be his mesh was way too tight. Fixed the mesh, no heat problems.
heavyjeffd is offline  
Old 07-11-2011, 12:36 PM
  #14316  
Tech Elite
iTrader: (15)
 
heavyjeffd's Avatar
 
Join Date: Mar 2010
Posts: 2,805
Trader Rating: 15 (100%+)
Default

Originally Posted by RACETEK View Post
Contact http://www.impressdesigns.com in Dallas. They make all my stickers and do a fantastic job..
Just an example.. The body is painted but the sticks are from them...
Cheater truck!
heavyjeffd is offline  
Old 07-11-2011, 12:38 PM
  #14317  
Tech Master
iTrader: (41)
 
RACETEK's Avatar
 
Join Date: Oct 2002
Location: Irving, Tx
Posts: 1,253
Trader Rating: 41 (100%+)
Default

Originally Posted by heavyjeffd View Post
I'm running an RX8 with a Havoc 4.5 (was running an SC4X 4.5 before, but it just stopped working, Tekin replaced it under warranty, never had any heat problems with it really).

The ambient temp in south Texas is well... retardedly hot. It hit 108F during practice this past Friday.

After a 5 min qual my truck came off at about 120F on the ESC and about 145F on the motor. My SC4X showed the same temps.

I'm running no timing, current limit is at 80%, with a 12T pinion, no drag brake. I've had more than enough motor for every track I've been to (including big outdoor 1/8th scale tracks).

Make sure your drive train is free and your mesh isn't too tight or it will definitely overheat your motor. A friend of mine had really bad overheating issues and it just turned out to be his mesh was way too tight. Fixed the mesh, no heat problems.
Don't roll your eyes at me son... It's ALL legal... LOL
Jeff speaks truth. Hot as hell this weekend but I made 10 minutes on a TP 5300 65c / 4Pole / RX8 geared to the moon (17t). Speedo came off at 135 and motor 155 after the 10 minute main. Alot of it has to do with how you drive (throttle finger) and speedo settings.
RACETEK is offline  
Old 07-11-2011, 12:40 PM
  #14318  
Tech Champion
iTrader: (6)
 
Matt Howard's Avatar
 
Join Date: Aug 2001
Location: Abilene TX
Posts: 5,953
Trader Rating: 6 (100%+)
Default

Originally Posted by RACETEK View Post
Contact http://www.impressdesigns.com in Dallas. They make all my stickers and do a fantastic job..
Just an example.. The body is painted but the sticks are from them...
bring that pretty body indoor at Mikes this weekend. I don't want to brag but I'm 4 for 4 for wins with my SC10 4x4
Matt Howard is offline  
Old 07-11-2011, 12:42 PM
  #14319  
Tech Master
iTrader: (41)
 
RACETEK's Avatar
 
Join Date: Oct 2002
Location: Irving, Tx
Posts: 1,253
Trader Rating: 41 (100%+)
Default

It isn't as pretty after this past weekend but the stickers held up great! I'm going to try my best to do some testing this week indoor with it and see what it can do. If your fast with the SC10 I can only imagine how fast you would be with a real truck.. lol.. If soccer doesn't much up my schedule too much I'll be there.
RACETEK is offline  
Old 07-11-2011, 12:42 PM
  #14320  
Tech Elite
iTrader: (15)
 
heavyjeffd's Avatar
 
Join Date: Mar 2010
Posts: 2,805
Trader Rating: 15 (100%+)
Default

Originally Posted by RACETEK View Post
Don't roll your eyes at me son... It's ALL legal... LOL
Jeff speaks truth. Hot as hell this weekend but I made 10 minutes on a TP 5300 65c / 4Pole / RX8 geared to the moon (17t). Speedo came off at 135 and motor 155 after the 10 minute main. Alot of it has to do with how you drive (throttle finger) and speedo settings.
I'm going to get the 4pole Tekin motor when it comes out. My temps were fine with 2pole.

Battery wise I'm using the Dynamite 6000mah/25c's.
heavyjeffd is offline  
Old 07-11-2011, 12:51 PM
  #14321  
Tech Champion
iTrader: (25)
 
losi_racer's Avatar
 
Join Date: Nov 2008
Location: mesa,az
Posts: 6,470
Trader Rating: 25 (100%+)
Default

Originally Posted by RACETEK View Post
Don't roll your eyes at me son... It's ALL legal... LOL
Jeff speaks truth. Hot as hell this weekend but I made 10 minutes on a TP 5300 65c / 4Pole / RX8 geared to the moon (17t). Speedo came off at 135 and motor 155 after the 10 minute main. Alot of it has to do with how you drive (throttle finger) and speedo settings.
But your running 4 pole ,comparing your set up to his is apples to oranges .also I wish ambient temps were only 108, we've already hit 118 official temp .were in monsoon season now so its 105 with Like 50% humidity
losi_racer is offline  
Old 07-11-2011, 12:55 PM
  #14322  
Tech Elite
iTrader: (42)
 
Asharus's Avatar
 
Join Date: Apr 2011
Location: Long Island, NY
Posts: 3,123
Trader Rating: 42 (100%+)
Default

Originally Posted by losi_racer View Post
But your running 4 pole ,comparing your set up to his is apples to oranges .also I wish ambient temps were only 108, we've already hit 118 official temp .were in monsoon season now so its 105 with Like 50% humidity
Wow, do you guys have any indoor tracks down south? I guess there's no need because you can race outdoors year round. I think I would pass out on the driver's stand if it was 118 out there.
Asharus is offline  
Old 07-11-2011, 12:55 PM
  #14323  
Tech Master
iTrader: (32)
 
Moogumby's Avatar
 
Join Date: May 2009
Location: Marysville, WA
Posts: 1,888
Trader Rating: 32 (100%+)
Default

Originally Posted by RACETEK View Post
Contact http://www.impressdesigns.com in Dallas. They make all my stickers and do a fantastic job..
Just an example.. The body is painted but the sticks are from them...
is that a blitz body on a SCTE?
Moogumby is offline  
Old 07-11-2011, 12:58 PM
  #14324  
Tech Champion
iTrader: (6)
 
Matt Howard's Avatar
 
Join Date: Aug 2001
Location: Abilene TX
Posts: 5,953
Trader Rating: 6 (100%+)
Default

Originally Posted by RACETEK View Post
It isn't as pretty after this past weekend but the stickers held up great! I'm going to try my best to do some testing this week indoor with it and see what it can do. If your fast with the SC10 I can only imagine how fast you would be with a real truck.. lol.. If soccer doesn't much up my schedule too much I'll be there.
don't tempt me with the losi. I emailed T. Hodge and he assured me the diff issues have been taken care of. The fact the losi was out of stock when I was car shopping and the diff issues the losi's were having swayed me to the AE truck. I'll be rocking the SC10 4x4 this weekend but I might have something new to try after that
Matt Howard is offline  
Old 07-11-2011, 01:04 PM
  #14325  
Tech Master
iTrader: (41)
 
RACETEK's Avatar
 
Join Date: Oct 2002
Location: Irving, Tx
Posts: 1,253
Trader Rating: 41 (100%+)
Default

Originally Posted by Moogumby View Post
is that a blitz body on a SCTE?
Yes that is a Blitz body.
RACETEK is offline  

Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell My Personal Information -

Copyright 2021 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.