R/C Tech Forums

Go Back   R/C Tech Forums > General Forums > Rookie Zone

Reply
 
Thread Tools Search this Thread
Old 11-28-2008, 02:19 PM   #1
Tech Rookie
 
Join Date: Nov 2008
Posts: 3
Default Rustler VXL gearing

I am only a few months into rc and have spent many hours in my local rc shops, tracks and online trying to research and get educated, but still consider myself a noob to all of this stuff. A little history and my current specs. I have changed out my Rustler tires to the Stampede tires currently running 25/86 gearing with a Venom 3s lipo. The only other upgrades that I have are integy shocks, traxxas aluminum castor and steering blocks, and rpm front/rear arms. My question is that my temps seem to be really high 160-170 on the motor and a couple of degrees cooler on the esc. My thinking was that I would gear my truck the same as the Stampede (7 cell NIMH) since the tires are bigger and heavier. I am not looking to go 70mhp, but would rather an all around good gearing for a little bashing and fun with my kids. Me and my son have been racing a little at our local indoor carpet track on foams, although I run a 19t brushed and modest gearing for better control as recommended by one of the local techs. I have attached a link to the chart for the stampede. The recommended gearing for the Rustler with 3s lipo is 31/76. The motor was swapped out by traxxas due to high temps running stock tires and gearing, so I do not suspect a bad motor. If anyone else has seen anything like this or has a recommendations, the help is greatly appreciated. Thanks in advance.

http://www.traxxas.com/products/elec...peed_chart.jpg
xaiceman is offline   Reply With Quote
Old 11-28-2008, 03:27 PM   #2
Tech Master
 
offtraxx's Avatar
 
Join Date: Aug 2008
Location: da dells WI
Posts: 1,868
Trader Rating: 58 (100%+)
Default

I'm farly new myself and I have lerned to reduce temps u need to reduce ur pinion. with the extra weight and fast motor I would try a 16-19t and go from there..hope I could help
__________________
I'm not a RC addict. addict's are in denial, I admit I have a problem
offtraxx is offline   Reply With Quote
Old 11-28-2008, 05:02 PM   #3
Tech Champion
 
whitrzac's Avatar
 
Join Date: May 2008
Location: WI
Posts: 5,154
Trader Rating: 86 (100%+)
Default

Quote:
Originally Posted by offtraxx View Post
I'm farly new myself and I have lerned to reduce temps u need to reduce ur pinion. with the extra weight and fast motor I would try a 16-19t and go from there..hope I could help
how many motors did you fry before you figured that out???

but he is right, start with a 16-19t pinion , for $11 you can't go wrong with these, its great to experament with.
whitrzac is offline   Reply With Quote
Old 11-29-2008, 10:10 AM   #4
Tech Regular
 
HoaRC's Avatar
 
Join Date: May 2007
Posts: 365
Trader Rating: 1 (100%+)
Default

Traxxas Rustler
Motor: 4.6 kv
Pinion: 13t
Spur: 84t
Battery: 3S Lipo
Posted by: Floogldood

Traxxas Rustler
Motor: VXL motor
Pinion: 17t
Spur: 86t
Battery: 3s Lipo
ESC: VXL ESC
Posted by: Bryan
__________________
Share your RC gearing setups at [URL="http://rcgearing.com"]
[FONT="Lucida Sans Unicode"][SIZE="4"][COLOR="RoyalBlue"]RC[/COLOR][COLOR="Magenta"]Gearing[/COLOR][COLOR="RoyalBlue"].com[/COLOR][/SIZE][/FONT][/URL]



[URL="http://www.rctech.net/forum/chat-lounge/255446-rctech-ad-models-vote-your-favorite-model.html"]Vote for your favorite rc girl! [/URL]
HoaRC is offline   Reply With Quote
Old 12-01-2008, 05:10 PM   #5
Tech Addict
 
pull-start's Avatar
 
Join Date: Jul 2006
Location: Dirty Jerzee
Posts: 712
Trader Rating: 27 (100%+)
Default

I am running 28/83 and with a 2S my motor temps have never went above 110 - 115* and ESC hasn't gone above 90*. When I run a 3S with the same gearing temps are slightly higher (5 - 10*).
My advice is to make sure you run the fan on your ESC and pop some holes for airflow in the body.
The Jaco foams are lighter and have less rotating mass which puts less stress on the motor.

pull-start is offline   Reply With Quote
Old 12-25-2008, 07:01 PM   #6
Tech Initiate
 
Join Date: Dec 2008
Posts: 20
Talking

try one gearing and run a few laps. If the motor is hot afterwards, get a lower gearing. If the ESC is hot, then get a higher gearing. If both are hot, get a heat sing
revo_master is offline   Reply With Quote
Old 12-26-2008, 02:27 PM   #7
Tech Apprentice
 
Brushlessboy's Avatar
R/C Tech Elite Subscriber
 
Join Date: Dec 2008
Location: PERTH Australia
Posts: 71
Trader Rating: 7 (100%+)
Send a message via MSN to Brushlessboy
Default

31/76 isn't recommended gearing, its gearing for 65mph +
You said you didnt want to race, yet you have gone for the high gearing, and you fitted Stampede tyres, which have a much greater rolling radius, which gears it up even more!
The stock gearing of 25/83 with a 3 cell will knock over most basher rigs anyway, so why change it?
Just drop the pinion size right down to 17 as suggested or to a 20 max.
With the VXL esc always make sure you run a fan, (they are a genuine 200amp esc) and always check the motor temp.
They are an underated motor kv wise but they do suffer from heat exhaustion!

P.S The 13/84 and the 17/86 will prove to be quite slow, however if you want to keep those wheels on its worth a shot....
__________________
RC8B 4274sl + 150amp
RC8B Worlds Edition Speed,
RC8T Trinity ExTech .24
RC8T Neu 1515 1Y + MMM
RC8T CE Ezrun 4465sl + 150amp, RCMonster Slipperential
Brushlessboy is offline   Reply With Quote
Old 01-03-2009, 03:02 PM   #8
Tech Rookie
 
Join Date: Jan 2009
Posts: 12
Default

I have the stampede vxl try a 20/86 I works good for all around use. try a fan on the esc and a heat sink/no fan on the motor that will help alot with out adding to much extra weight. the bigger your pinion is the hotter it will get, so be careful 200 is vxl's limit
yugiboy is offline   Reply With Quote
Old 07-12-2009, 06:58 PM   #9
Tech Rookie
 
Join Date: Jul 2009
Posts: 1
Default

I certainly think you are over gearing the truck. I have a XL5 rustler that is running brushless now and I have found that a 26 Pinion and 86 spur has turned out the be a great combo. I only run 8.4 NiMH on the track although I do have 3c lipo. I just found it to be a waste of time on the track. The brushless motor will pull to no end and the gearing can get me by most off the turns. I am only running at max 120 degrees after a hard run with this set up.
Mud burried is offline   Reply With Quote
Old 07-07-2012, 09:57 PM   #10
Tech Initiate
 
hipvspec's Avatar
 
Join Date: Jul 2009
Location: clearing triple half way thru
Posts: 32
Default

Quote:
Originally Posted by Brushlessboy View Post
31/76 isn't recommended gearing, its gearing for 65mph +
You said you didnt want to race, yet you have gone for the high gearing, and you fitted Stampede tyres, which have a much greater rolling radius, which gears it up even more!
The stock gearing of 25/83 with a 3 cell will knock over most basher rigs anyway, so why change it?
Just drop the pinion size right down to 17 as suggested or to a 20 max.
With the VXL esc always make sure you run a fan, (they are a genuine 200amp esc) and always check the motor temp.
They are an underated motor kv wise but they do suffer from heat exhaustion!

P.S The 13/84 and the 17/86 will prove to be quite slow, however if you want to keep those wheels on its worth a shot....
I know this thread is very old, but I stumble upon it and I must clarify what Brushlessboy was saying. The VXL-3s esc's 200amp is more like a peak amp rating. If it really can do 200amp constant like a MGM esc it wouldn't need a fan at all the running a puny 540 size motor with 3s
hipvspec is offline   Reply With Quote
Sponsored Links
Reply


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

Similar Threads
Thread Thread Starter Forum Replies Last Post
Traxxas Rustler XL-5 and VXL TCRacer101 Electric Off-Road 224 09-02-2011 07:01 AM
Rustler vxl vs E firestorm Brushless salabarria Electric Off-Road 31 01-20-2010 08:53 PM
Traxxas Rustler VXl murph812 Electric Off-Road 11 06-05-2009 02:24 PM
New to 1/8th scale electric!!!! For newbies Jerseyboy Electric Off-Road 16 05-28-2009 11:09 PM
New battery for rustler vxl salabarria Electric Off-Road 18 04-15-2009 02:28 PM
3.3 Tmaxx vs Rustler VXL asimmons Monster Trucks 38 03-12-2008 05:44 AM


All times are GMT -8. It is currently 08:20 PM.



SEO by vBSEO 3.5.0