R/C Tech Forums

Go Back   R/C Tech Forums > General Forums > Nitro On-Road > Onroad Nitro Engine Zone

Reply
 
Thread Tools Search this Thread
Old 08-20-2013, 03:35 AM   #3391
HHH
Tech Regular
 
HHH's Avatar
 
Join Date: Aug 2008
Location: Singapore
Posts: 423
Default

Uriah, have you seen these .12 TOP nova engines? Not sure if new or old. What is your take on them?

Sam
HHH is offline   Reply With Quote
Old 08-23-2013, 06:01 PM   #3392
Tech Master
 
Grinder's Avatar
R/C Tech Elite Subscriber
 
Join Date: Feb 2003
Posts: 1,847
Trader Rating: 2 (100%+)
Default

Quote:
Originally Posted by HHH View Post
Uriah, have you seen these .12 TOP nova engines? Not sure if new or old. What is your take on them?

Sam
So far I've only seen them run. They seem good. These are a new line of top engines. The .12 looks a lot like a plus 12-3SCT. The .21's look like a 35+21, and the other .21 looks like a kangaroo.
__________________
www.murnanmodified.com
Grinder is offline   Reply With Quote
Old 08-23-2013, 09:33 PM   #3393
Tech Initiate
 
Join Date: Jan 2010
Posts: 37
Default

Hi Uriah, in the Picco thread you mentioned:

"Usually it's best to set the EPA to the same size as the ventury."

Why is this? Just checking because I have always set up the carb to fully open.
mrlahey is offline   Reply With Quote
Old 08-24-2013, 06:54 PM   #3394
Tech Master
 
Grinder's Avatar
R/C Tech Elite Subscriber
 
Join Date: Feb 2003
Posts: 1,847
Trader Rating: 2 (100%+)
Default

Quote:
Originally Posted by mrlahey View Post
Hi Uriah, in the Picco thread you mentioned:

"Usually it's best to set the EPA to the same size as the ventury."

Why is this? Just checking because I have always set up the carb to fully open.
Opening the slide past the size of the ventury usually does nothing to increase power when the engine is close to optimal tune. You want the ventury shape to be smooth through the carb body to maximize airflow. Opening past the ventury can causes an air flow disturbance, reducing the air speed.

In some rare cases I have seen opening the slide past the ventury will increase power. Most of the time opening past does nothing though.

Give both ways a try next time at the track. Just make sure you don't pull too far, and stress your carb, and servo.
__________________
www.murnanmodified.com
Grinder is offline   Reply With Quote
Old 08-24-2013, 09:57 PM   #3395
Tech Master
 
godzukihop's Avatar
 
Join Date: Feb 2008
Posts: 1,659
Trader Rating: 30 (100%+)
Default

Got my shirt today, thanks Uriah.
__________________
JOHN's MOBILE RACEWAY | 180 RACEWAY | Jackson RC Track
Murnan Modified because HP is intoxicating!!! | VP RACE FUEL |
G-FORCE HOBBIES | Fordham Hobbies | ASHFORD HOBBY | TEAM CAMDEN
RC AMERICA / XRAY / HUDY / TEAM POWERS
godzukihop is offline   Reply With Quote
Old 08-25-2013, 06:50 PM   #3396
Tech Champion
 
GMartinez's Avatar
 
Join Date: Dec 2004
Location: Sunshine State
Posts: 7,916
Trader Rating: 82 (100%+)
Default

Congrats Uriah on your podium finish @ the glc
__________________
www.fullthrottlercraceway.com
Home of The U.S. World Nitro Cup
2014 Hosted Events Roar Paved Electric Nationals, IFMAR ISTC Worlds
2015 Roar Fuel On Road Nationals,U.S.World Nitro Cup Completed
2016 U.S. World Nitro Cup Dec 7th - Dec 11th
GMartinez is offline   Reply With Quote
Old 09-03-2013, 10:53 AM   #3397
DDG
Tech Initiate
 
Join Date: Jul 2013
Posts: 27
Default

Do you guys know of any murnan mod .21 engine to be use in GT racing that would reach 9 min. and 30 sec.? we race 45 min. here and would like to pit 5 times instead of 6.
DDG is offline   Reply With Quote
Old 09-03-2013, 03:19 PM   #3398
Tech Master
 
Join Date: Nov 2012
Posts: 1,111
Trader Rating: 12 (100%+)
Default

Will the piston/sleeve rod and crankshaft from a RBM3 fit into a RBT10RC?
JOE SI is offline   Reply With Quote
Old 09-03-2013, 03:23 PM   #3399
Tech Master
 
Join Date: Nov 2012
Posts: 1,111
Trader Rating: 12 (100%+)
Default

This motor
Attached Thumbnails
Murnan Modified Motors-image.jpg  
JOE SI is offline   Reply With Quote
Old 09-11-2013, 07:10 AM   #3400
Tech Master
 
Grinder's Avatar
R/C Tech Elite Subscriber
 
Join Date: Feb 2003
Posts: 1,847
Trader Rating: 2 (100%+)
Default

Quote:
Originally Posted by JOE SI View Post
Will the piston/sleeve rod and crankshaft from a RBM3 fit into a RBT10RC?
Yes, it will fit.
__________________
www.murnanmodified.com
Grinder is offline   Reply With Quote
Old 09-11-2013, 07:22 AM   #3401
Tech Master
 
Grinder's Avatar
R/C Tech Elite Subscriber
 
Join Date: Feb 2003
Posts: 1,847
Trader Rating: 2 (100%+)
Default

Quote:
Originally Posted by DDG View Post
Do you guys know of any murnan mod .21 engine to be use in GT racing that would reach 9 min. and 30 sec.? we race 45 min. here and would like to pit 5 times instead of 6.
Depends on driver, and the track. The nova flash rally, or Reds M7GT will be good on mileage, and power. I've never tried pushing them that far on mileage.

We can get there with the bonito, but its not as fast as the other two above mentioned.
__________________
www.murnanmodified.com
Grinder is offline   Reply With Quote
Old 09-11-2013, 09:44 AM   #3402
DDG
Tech Initiate
 
Join Date: Jul 2013
Posts: 27
Default

Thanks for the reply grinder. What is the best clutch setting for mileage? softt side or on the hard side?
DDG is offline   Reply With Quote
Old 09-11-2013, 04:51 PM   #3403
Tech Master
 
Grinder's Avatar
R/C Tech Elite Subscriber
 
Join Date: Feb 2003
Posts: 1,847
Trader Rating: 2 (100%+)
Default

Quote:
Originally Posted by DDG View Post
Thanks for the reply grinder. What is the best clutch setting for mileage? softt side or on the hard side?
A soft clutch is better for mileage. Although it can make the engine run hotter, and its slower out of the corners.

I prefer a harder clutch. Then you can roll into the throttle to save fuel if needed.
__________________
www.murnanmodified.com
Grinder is offline   Reply With Quote
Old 09-18-2013, 06:01 PM   #3404
Tech Addict
 
Join Date: Sep 2010
Location: Del-A-Where?
Posts: 559
Trader Rating: 3 (100%+)
Default 2013 On Road Paved Fuel Nationals

Murnan Modified Motors-paved-nats-2013.jpg

Thanks again Murnan Modifieds for giving me the reliable, powerful, and fuel efficient M3 allowing me to place 7th overall in the A main at the On Road Fuel Nationals! I am always pleased with the results of your efforts i am looking forward to using these products On and Off road next year!!!! Thanks Again
__________________
"Drew Q."
~Team Durango~RCAmerica~Futaba~Trak Power~Murnan Modifieds~REDS Racing USA~Hot Race Tyres
automagic302 is offline   Reply With Quote
Old 10-04-2013, 07:51 AM   #3405
DDG
Tech Initiate
 
Join Date: Jul 2013
Posts: 27
Default

I was lucky enough to try a Murnan mod Virtus on my Team C GT8. "Insanely fast". It would hop from corner to corner, and on our 130 feet straightaway, The tires seem to look for more traction. until around 3/4 of our straightaway. It would bounce a little and I was using Sweep 40's slicks. Just Amamzing !!!
DDG is offline   Reply With Quote
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
MURNAN MODIFIED PLUS 21-7BT tmperformance1 R/C Items: For Sale/Trade 4 02-11-2008 01:00 PM
MRX-4R,murnan modified 35+21 ltrdude R/C Items: For Sale/Trade 19 12-11-2007 03:29 AM
Ninja TA01 Murnan Modified,OS TZ Modified GMartinez R/C Items: For Sale/Trade 31 08-20-2007 09:40 PM
Murnan Modified horizon644 Nitro On-Road 1 02-06-2007 09:32 PM
Murnan Modified Motors AlanLim Onroad Nitro Engine Zone 1 04-20-2004 12:01 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 12:54 PM.


Powered By: vBulletin v3.9.2.1
Privacy Policy | Terms of Use | Advertise Content © 2001-2011 RCTech.net

SEO by vBSEO 3.5.0