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 03-23-2011, 12:38 PM   #4021
Tech Champion
 
Roelof's Avatar
 
Join Date: Aug 2007
Location: Holland
Posts: 5,600
Send a message via ICQ to Roelof
Default

If you want to save money why not going for a N21-7T it is basicly the same as the Kangaroo.

At our club we are running the N21-5T as a "stock motor" and that thing runs very well, with some modding it does run insaine.
__________________
Speed is only fiction but a 130+km/h MRS4 is for real.
Roelof is offline   Reply With Quote
Old 03-23-2011, 03:50 PM   #4022
Tech Master
 
ralphierace13's Avatar
 
Join Date: Apr 2007
Posts: 1,827
Trader Rating: 4 (100%+)
Default

Quote:
Originally Posted by Roelof View Post
If you want to save money why not going for a N21-7T it is basicly the same as the Kangaroo.

At our club we are running the N21-5T as a "stock motor" and that thing runs very well, with some modding it does run insaine.
i pay really cheap for a tuned kanga and its tuned so dont need any work..

oh i got a set of boca ceramic bearings poped them in before and tightened the flywheel down and the crank turns very tight took them out measured everything and its all the same does anyone know y thins happens?
__________________
RALPH FORTUNATO
MUGEN SEIKI MRX6 TEAM DRIVER
Futaba 4PK-S-R, Novarossi Team Driver, CONTACT TIRES
Byron Fuel, Veytrex Desgin Labs
2014 R.O.A.R. REGION 1 CHAMPION!!
ralphierace13 is offline   Reply With Quote
Old 03-23-2011, 05:32 PM   #4023
Tech Regular
 
Join Date: Jul 2003
Posts: 498
Trader Rating: 4 (100%+)
Default

Quote:
Originally Posted by ralphierace13 View Post
i pay really cheap for a tuned kanga and its tuned so dont need any work..

oh i got a set of boca ceramic bearings poped them in before and tightened the flywheel down and the crank turns very tight took them out measured everything and its all the same does anyone know y thins happens?
My guess would be that the engine bearings were not installed right. Was the crank smooth with the old bearings??? If not then bearings may not be the issue. Or if so maybe when you installed one was a small bit off. How did you install them?? Drop them in with the case hot or drive them in with a bearing driver. Also you can damage the bearings by applying force to the inner raceway when installing. I have seen when they are installed incorrect all you need is a few thousandth's and the bearing is damaged and the crankshaft is not aligned correct. Just a idea.
xspower is offline   Reply With Quote
Old 03-23-2011, 07:01 PM   #4024
Tech Master
 
ralphierace13's Avatar
 
Join Date: Apr 2007
Posts: 1,827
Trader Rating: 4 (100%+)
Default

Quote:
Originally Posted by xspower View Post
My guess would be that the engine bearings were not installed right. Was the crank smooth with the old bearings??? If not then bearings may not be the issue. Or if so maybe when you installed one was a small bit off. How did you install them?? Drop them in with the case hot or drive them in with a bearing driver. Also you can damage the bearings by applying force to the inner raceway when installing. I have seen when they are installed incorrect all you need is a few thousandth's and the bearing is damaged and the crankshaft is not aligned correct. Just a idea.
i think i know what the problem is i just dont know y, the inner raceway gets pushed in alittle when u tighten the flywheel down, so the outer edge of the crankshaft is rubbing against the outer raceway of the bearing.. now y i dont know, is it a defect in the bearing? is what i dont know, i use the grp bearing installer and have done this a million times never had this problem, but i will get boca to send a new one and retry it.. keep ya posted
__________________
RALPH FORTUNATO
MUGEN SEIKI MRX6 TEAM DRIVER
Futaba 4PK-S-R, Novarossi Team Driver, CONTACT TIRES
Byron Fuel, Veytrex Desgin Labs
2014 R.O.A.R. REGION 1 CHAMPION!!
ralphierace13 is offline   Reply With Quote
Old 03-23-2011, 09:20 PM   #4025
Tech Elite
 
TommyBlazin's Avatar
 
Join Date: Feb 2009
Location: jersey
Posts: 2,579
Trader Rating: 29 (100%+)
Default

Quote:
Originally Posted by Roelof View Post
If you want to save money why not going for a N21-7T it is basicly the same as the Kangaroo.

At our club we are running the N21-5T as a "stock motor" and that thing runs very well, with some modding it does run insaine.
THATS OFROAD, AND THE ONROADS ARE 100G LIGHTER, ITS NOT SO MUCH SAVING MONEY ITS JUST I HAVE A NEW 200$ maxpowerxl9tq crank that i can throw in a kangaroo ralley, and itll be sick!!! and murnans modding the sleeve, see where im heading, unless that motor u showed me weighs less than the kangaroo ralley, has SAME p/s/r set, and a 14mm crank i can use..or cheaper than the roo ralley im in!!! who has em in usa, and are they on or offroad motors? lastlly weight? thanx roe!!
__________________
Thinking on maybe a Tekno 1/8 Nitro Buggy?
TommyBlazin is offline   Reply With Quote
Old 03-23-2011, 11:13 PM   #4026
Tech Elite
 
TommyBlazin's Avatar
 
Join Date: Feb 2009
Location: jersey
Posts: 2,579
Trader Rating: 29 (100%+)
Default

NOVAROSSI PIPE SET 9901SS &41021 LIKE NEW!!!!

sorry

or Trade For a NEW 9886 Novarossi pipe, same coupling-spring style as this... no header just pipe!!!
__________________
Thinking on maybe a Tekno 1/8 Nitro Buggy?
TommyBlazin is offline   Reply With Quote
Old 03-24-2011, 12:21 AM   #4027
Tech Champion
 
Roelof's Avatar
 
Join Date: Aug 2007
Location: Holland
Posts: 5,600
Send a message via ICQ to Roelof
Default

Quote:
Originally Posted by TommyBlazin View Post
THATS OFROAD, AND THE ONROADS ARE 100G LIGHTER, ITS NOT SO MUCH SAVING MONEY ITS JUST I HAVE A NEW 200$ maxpowerxl9tq crank that i can throw in a kangaroo ralley, and itll be sick!!! and murnans modding the sleeve, see where im heading, unless that motor u showed me weighs less than the kangaroo ralley, has SAME p/s/r set, and a 14mm crank i can use..or cheaper than the roo ralley im in!!! who has em in usa, and are they on or offroad motors? lastlly weight? thanx roe!!
The N21-xT basic line are onroad engines. The 5T is near close to the faster engines, the timings on the sleeve are perfect and a MAX crankshaft will make it fast.

To give you an idea: (on the frontpage)
http://www.rccar24.de/
__________________
Speed is only fiction but a 130+km/h MRS4 is for real.
Roelof is offline   Reply With Quote
Old 03-24-2011, 06:05 AM   #4028
Tech Regular
 
Join Date: Sep 2004
Posts: 265
Default Desoto - Novarossi @ Worlds

Desoto Racing will be at the Worlds in Homestead. Anyone needing parts or help can stop by our track shop. Also, you can pre-order motors, pipes, tires, parts... for delivery at the track on Wednesday or Thursday.
__________________
Desoto Racing
Novarossi America, Serpent America, TOP Engines, Matrix Racing Tires, ProCircuit, Titan/Blitz Products, Xceed Products, KO Propo, Enneti, ArrowMax

info@desotoracing.com, www.serpentamerica.com
jdesoto is offline   Reply With Quote
Old 03-24-2011, 07:57 AM   #4029
Tech Adept
 
nitro_fanatic's Avatar
 
Join Date: Aug 2008
Posts: 152
Trader Rating: 3 (100%+)
Default Nova glow plugs

Hi, i'm running the nova 35plus21LCWC09 engine.

The recommended plug is C7TGF which is the short body type.

Does using the long body C7TC affects the performance of the engine?

Had anybody tried using OS RP7 plugs on the nova?

Thanks in advance for your replies.
nitro_fanatic is offline   Reply With Quote
Old 03-24-2011, 08:06 AM   #4030
Tech Champion
 
Roelof's Avatar
 
Join Date: Aug 2007
Location: Holland
Posts: 5,600
Send a message via ICQ to Roelof
Default

The OS 8 runs very good on Nova's
__________________
Speed is only fiction but a 130+km/h MRS4 is for real.
Roelof is offline   Reply With Quote
Old 03-24-2011, 10:04 AM   #4031
Tech Master
 
GREGORY!'s Avatar
 
Join Date: Jun 2006
Location: Greece
Posts: 1,066
Trader Rating: 1 (100%+)
Default

Roelof,what about N21-7t?
__________________
" kyosho rrr wc-team orion crf "
" serpent 966-mega zx21 EM "
" mugen mbx6-picco p7r evo 2 "
GREGORY! is offline   Reply With Quote
Old 03-24-2011, 10:38 AM   #4032
Tech Champion
 
Roelof's Avatar
 
Join Date: Aug 2007
Location: Holland
Posts: 5,600
Send a message via ICQ to Roelof
Default

I have seen one running and it runs fine but can not say anything about its timings compared with others although I do believe the partnumber of the crankshaft is the same as from the 5T, I thought I have seen that on the exploded views.

In the basic the populair JP P7L was based on this engine, if you look arround ebay probably you will find a brandnew P7L. It would not supprise me it has the same P/S set as the Kangaroo.

From what I know the 5T uses the same buttonhead as the Kangaroo and from what I do remember well is that the carb of the 5T has a different LSN than the 7T
__________________
Speed is only fiction but a 130+km/h MRS4 is for real.
Roelof is offline   Reply With Quote
Old 03-24-2011, 01:33 PM   #4033
Tech Elite
 
J.Gonzalez's Avatar
 
Join Date: Nov 2002
Location: connecticut
Posts: 2,409
Trader Rating: 16 (100%+)
Default

Quote:
Originally Posted by ralphierace13 View Post
i pay really cheap for a tuned kanga and its tuned so dont need any work..

oh i got a set of boca ceramic bearings poped them in before and tightened the flywheel down and the crank turns very tight took them out measured everything and its all the same does anyone know y thins happens?
Ralph

In my opinion Aftermarket bearings are good way to ruin perfectly good engine. I have had very bad experience with aftermarket bearing quality (Tko and Boca).

I think I have pic of the exploded ball missing from the race and demo job it did on an engine. However it made nice 400$ paper weight. Bearing had less than 1 fuel bottle thru it before it exploded. I should have known better as fit was poor and similar to what you are describing. Take them out and get Nova bearings not worth it.

I have yet to find good source of engine bearings other than nova oem replacement bearings.

Good luck.

Jamie
J.Gonzalez is offline   Reply With Quote
Old 03-24-2011, 02:08 PM   #4034
Tech Master
 
ralphierace13's Avatar
 
Join Date: Apr 2007
Posts: 1,827
Trader Rating: 4 (100%+)
Default

Quote:
Originally Posted by J.Gonzalez View Post
Ralph

In my opinion Aftermarket bearings are good way to ruin perfectly good engine. I have had very bad experience with aftermarket bearing quality (Tko and Boca).

I think I have pic of the exploded ball missing from the race and demo job it did on an engine. However it made nice 400$ paper weight. Bearing had less than 1 fuel bottle thru it before it exploded. I should have known better as fit was poor and similar to what you are describing. Take them out and get Nova bearings not worth it.

I have yet to find good source of engine bearings other than nova oem replacement bearings.

Good luck.

Jamie

yeah jamie u are 100% right there on there way back to boca!!
__________________
RALPH FORTUNATO
MUGEN SEIKI MRX6 TEAM DRIVER
Futaba 4PK-S-R, Novarossi Team Driver, CONTACT TIRES
Byron Fuel, Veytrex Desgin Labs
2014 R.O.A.R. REGION 1 CHAMPION!!
ralphierace13 is offline   Reply With Quote
Old 03-24-2011, 07:57 PM   #4035
Tech Elite
 
TommyBlazin's Avatar
 
Join Date: Feb 2009
Location: jersey
Posts: 2,579
Trader Rating: 29 (100%+)
Default

Quote:
Originally Posted by ralphierace13 View Post
yeah jamie u are 100% right there on there way back to boca!!
really Ive run several tko's no problem, and Boca's are supposedly better, quick q, and i know u have plenty more know how than me ralph, but with the ceramics, tko's especially, i was told u have to let them warm up real slow before blippin engine, as it cause "flatspots" knowing that i purchased a competition heater for the head, running tko's in a particular off-road motor for 6 gallons NOT a HICCUP bro...but i was told about the ceramic bearings skidding when engine is not heated up to running temp and was told early on, when engines hot, THAN you can blip, just a precautionary with ceramic bearings that i dont think everyone knows about...lmk if that could be the case if so, tell them you preheated etc etc ...lol...


tommy
__________________
Thinking on maybe a Tekno 1/8 Nitro Buggy?
TommyBlazin is offline   Reply With Quote
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
Sirio engines thread EVOLUTION Offroad Nitro Engine Forum 2824 04-29-2014 10:58 AM
Axial Engines thread Axial Racing Onroad Nitro Engine Zone 164 10-06-2008 05:48 PM
RB engines thread CraigM Nitro Off-Road 7 01-05-2008 10:57 AM
JP Engines Thread DOMOisCOOL Onroad Nitro Engine Zone 2 02-16-2004 05:00 AM
OS engines thread EVOLUTION Onroad Nitro Engine Zone 44 02-11-2004 06:28 PM



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 05:38 PM.


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