R/C Tech Forums

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

Reply
 
Thread Tools Search this Thread
Old 01-27-2007, 09:57 PM   #1
Tech Elite
 
22Racer's Avatar
 
Join Date: Mar 2002
Location: Wanamingo Mn
Posts: 3,088
Trader Rating: 67 (100%+)
Default Best fuel mileage .21?

Just curios what motor people thought was the best on fuel, to many races come down to pitting less. I know the v-specs get probably the best, anything else close? (just dont like them) My son was leaning toward a Ninja, I've heard there pretty good on fuel. Right now he's running a Rb S72.

Rex
__________________
Rw modding and engine repair http://www.rw-mods.com
Sleeve resizing $15.00/ motor rebuild $30.00
Argus engine distributor/Avid bearings/ Alpha engines/
Fx Royal engines/ Maxy Engines
e-mail [email protected] Rex Welch
22Racer is offline   Reply With Quote
Old 01-28-2007, 05:41 AM   #2
Tech Adept
 
Join Date: Feb 2006
Posts: 105
Trader Rating: 2 (100%+)
Default .21

I get 12min. out of my ninja with all 4 head shims at 220 deg. and with plenty of power.
sracer is offline   Reply With Quote
Old 01-28-2007, 08:59 AM   #3
Tech Regular
 
Join Date: Oct 2006
Location: illinois
Posts: 327
Trader Rating: 19 (100%+)
Default Motor

I am running the S7W3 and I am getting between 9 and 10 minutes of runtime out of it. The only thing I did was add one extra head shim so I could run 30% fuel. I always tune my motors by performance not temperature, but it usually temps between 250 and 270 when it comes off of the track. Hope I could help.
Jmnay_83 is offline   Reply With Quote
Old 01-28-2007, 09:30 AM   #4
Tech Champion
 
R40Victim's Avatar
 
Join Date: Jan 2005
Location: N.W. FL___L.A.___Lower Alabama
Posts: 7,823
Trader Rating: 1 (100%+)
Default

I managed a 14 minute run with one of these:

http://www.amainhobbies.com/product_...oducts_id/9124
R40Victim is offline   Reply With Quote
Old 01-28-2007, 07:53 PM   #5
Tech Elite
 
22Racer's Avatar
 
Join Date: Mar 2002
Location: Wanamingo Mn
Posts: 3,088
Trader Rating: 67 (100%+)
Default

My son actually ran T21bf in his Jammin truggy last year. They are awesome motors for the price, he won most of his mains. How lean are you running it to get 14 minutes? Temp?

Rex
__________________
Rw modding and engine repair http://www.rw-mods.com
Sleeve resizing $15.00/ motor rebuild $30.00
Argus engine distributor/Avid bearings/ Alpha engines/
Fx Royal engines/ Maxy Engines
e-mail [email protected] Rex Welch
22Racer is offline   Reply With Quote
Old 01-28-2007, 09:21 PM   #6
Tech Champion
 
R40Victim's Avatar
 
Join Date: Jan 2005
Location: N.W. FL___L.A.___Lower Alabama
Posts: 7,823
Trader Rating: 1 (100%+)
Default

Not too lean, it was warm down here in Fl when I did it. Small track, efficient drivetrain, light car, and easy on the throttle. I had my brother time it 1st, and I didn't believe him...until I timed it myself!
R40Victim is offline   Reply With Quote
Old 01-29-2007, 04:46 PM   #7
Moderator
 
WYLDTHING's Avatar
 
Join Date: Jan 2004
Location: Justa passin through.......
Posts: 4,538
Trader Rating: 148 (99%+)
Default

I still run RB S5's in my buggy, and they do really well on fuel mileage. I typically get about 11 1/2 to 12 minutes out of a ROAR legal tank, at race pace, with the engine running at about 225-230...
I had someone turn me on to RB engines last year, and I fell in love with them! The V-SPEC engine does extemely well on mileage as well, but only if you are running the carb restictors...And, you still have to replace the stinkin bearings in a brand new high-end engine!!!...not cool!
__________________
<>< JESUS IS MY HERO! ><>

==TEAM NOVELTY==
WYLDTHING is offline   Reply With Quote
Old 01-29-2007, 07:19 PM   #8
Tech Adept
 
Join Date: Jun 2005
Location: baraboo
Posts: 169
Trader Rating: 3 (100%+)
Send a message via AIM to better
Default

How Little fuel/oil do you want lubing your bearings in your 300$ motor 8min is all you need! the way i see it trying to get the best fuel miles is destructive, just run the motor to what it likes. I have never seen a motor run more than 10mins and who cares if it would just pit and drive the car and get good. stop buying motors.
better is offline   Reply With Quote
Old 01-29-2007, 07:22 PM   #9
Moderator
 
WYLDTHING's Avatar
 
Join Date: Jan 2004
Location: Justa passin through.......
Posts: 4,538
Trader Rating: 148 (99%+)
Default

Quote:
Originally Posted by better
How Little fuel/oil do you do you want lubing your bearings in your 300$ motor 8min is all you need! the way i see it trying to get the best fuel miles is destructive, just run the motor to what it likes. I have never seen a motor run more than 10mins and who cares if it would just pit and drive the car and get good. stop buying motors.
If my engines were running hot, or they weren't lasting as long as they should, then this would be a relevent statement......but they don't run hot, and they don't wear out prematurely, so apparently, this isn't a relevent statement....
__________________
<>< JESUS IS MY HERO! ><>

==TEAM NOVELTY==
WYLDTHING is offline   Reply With Quote
Old 01-29-2007, 07:28 PM   #10
Tech Adept
 
Join Date: Jun 2005
Location: baraboo
Posts: 169
Trader Rating: 3 (100%+)
Send a message via AIM to better
Default

Don't argue with the laws physics! 14mins=hot
better is offline   Reply With Quote
Old 01-29-2007, 07:35 PM   #11
Moderator
 
WYLDTHING's Avatar
 
Join Date: Jan 2004
Location: Justa passin through.......
Posts: 4,538
Trader Rating: 148 (99%+)
Default

Okay....that means that thousands of racers around the world must be wrong, and you're right...

For the other people reading the thread.....don't worry about running your engines to get the best fuel mileage you can.....even if it's running at 225-230 degrees, it'll be okay.

And by the way, it does "matter", even if you are a "good" driver.....a 30, 45, or 60 min main, means pitting several times in the race. And if you figure that each pitstop costs you 3-4 seconds extra per lap, then eliminating 2 or 3 of those pitstops during the race, obviously saves you alot of time. It's the law of physics...no wait, somebody already said not to argue with physics.
So I guess it DOES matter after all...lol.
__________________
<>< JESUS IS MY HERO! ><>

==TEAM NOVELTY==
WYLDTHING is offline   Reply With Quote
Old 01-29-2007, 07:35 PM   #12
Tech Master
 
CaseyP's Avatar
 
Join Date: May 2005
Location: Having fun racing toy cars in beautiful AZ
Posts: 1,715
Trader Rating: 5 (100%+)
Default

fuel brand, track condition, track size, driving habbits all play a part in run time. It is not unheard of to get 10 plus with a v-spec with out running it hot.
__________________
<>< The Truth Will Set You Free!

TLR / Team Orion / Spektrum / AKA / TEKIN / Horizon Hobby / upgrade rc / AVID / SCH / SPY / HAL'S HOBBY WAREHOUSE
CaseyP is offline   Reply With Quote
Old 01-29-2007, 08:11 PM   #13
Tech Adept
 
Paradoxmaker's Avatar
 
Join Date: Jan 2007
Location: Ft Worth, Tx
Posts: 168
Default

I've easily ran for 10 min with my GO tech .21 5 port and a 053 pipe.
Paradoxmaker is offline   Reply With Quote
Old 01-29-2007, 09:10 PM   #14
Tech Elite
 
mach51's Avatar
 
Join Date: Aug 2005
Location: Lafayette, IN
Posts: 4,278
Trader Rating: 30 (100%+)
Default

track and tuning and driving style are going to impact fuel economy as much as the engine itself...
mach51 is offline   Reply With Quote
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
BEST FUEL MILEAGE PIPE ???? dead1dave Nitro Off-Road 12 08-25-2008 06:04 AM
1/8th scale Fuel Mileage Thread Scootersisters Nitro Off-Road 8 10-07-2007 07:27 PM
Fuel Mileage blues? rltanner Nitro Off-Road 33 09-25-2007 01:36 AM
Poor fuel mileage Jasonsuper50 Electric Off-Road 17 06-28-2006 08:42 AM
Clutch adjustments for fuel mileage BrainTeased Nitro On-Road 5 02-01-2006 05:02 AM



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 10:43 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