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 05-20-2007, 02:32 AM   #226
Tech Elite
 
stefan's Avatar
 
Join Date: Aug 2001
Location: Bavaria, Germany
Posts: 3,273
Send a message via AIM to stefan
Default

9 turns, damn!
Doesn't the needle fall out?

I have been running 6.75 turns, like LRP recommends, but I'll try your suggestion.


Quote:
Originally Posted by Fabian K
Ok, Let me see if can help you sorry the bad english ;

I have race LRP .12 engines since the first one ,later sepc2 an spec3 now,

of course your head shims need to be correct by the % percentage ok

this engines likes and works perfectly with the botton en needle too rich, try to use aroud 9 turns opened dont worry its too much ok but works,

later this maybe you will never need to touch/tune again on the booton end
needle , to check if the botton end is fine , try this; run the car same way you run on the race, fastest you can around 3 laps , come to the pit, stop the car, and lift the front end of the chassis your car you will put the car almost on vertical the engine this time will want to rich a lot and want to die , here is the best point, if not you will need to rich a little bit more the low end needle, if the engine die before this the low end is too rich, this tip works because the car on vertical position makes the fuel inside of the tank goes easy to the carburator and make the engine rich alone,


Of course before you tune the botton end is better you tune the main needle , go to the track with main needle rich, your second speed maybe does not shift or shitf too late , start to lean 1/8 of turn each time until your engine show you a very good power so later this stop to lean or just go moore 1/8 maximum , later this go to tune the botton end like i told above,

The LRP engines does not work same procedure like nova based or anothers to have a good power on botton you need to work too rich on botton needle

Dont be afraid to rich a lot the botton end the more you rich better will be until the point of the engine die when stops

Try,
I hope will work for you
stefan is offline   Reply With Quote
Old 05-20-2007, 08:27 AM   #227
Tech Regular
 
Join Date: Feb 2006
Posts: 373
Trader Rating: 4 (100%+)
Default LRP settings

Guys can you tell me what is the default settings after breakin for the SPEC 3

thx
jelayne is offline   Reply With Quote
Old 05-20-2007, 07:38 PM   #228
Tech Elite
 
lil-bump's Avatar
 
Join Date: Aug 2006
Location: The Cold Great Lakes
Posts: 2,963
Trader Rating: 83 (100%+)
Default

I just had my first race with the spec 3 this engine scoots.I could keep pace with JB's and novarossi down the back straight. I had a little trouble with the engine loading up with fuel during the technical section of the track I just leaned out the low end a little at a time. By the second qual it was like a rocket temps ran around 225-235. It was really cool at the track.I had to switch to a med plug.The temps hovered around the 60's all day took almost three laps to get the engine up to temp. all in all a great little mill
__________________
Elliott Hart
Serpent America
Desoto Racing Team
Chicky fan club member #9
One Eighth Racers of Toledo
lil-bump is offline   Reply With Quote
Old 05-20-2007, 07:52 PM   #229
Tech Champion
 
Team Kamikaze's Avatar
R/C Tech Elite Subscriber
 
Join Date: Apr 2006
Location: 我的名字是沈先生。我是中国人, 居住美国
Posts: 8,868
Trader Rating: 3 (100%+)
Default

Quote:
Originally Posted by Sp Racer
...so the saga continues


the top of the piston is very dark ( obviously hot) , yet the engine still runs cool

Damn strange...
Just want to clear something up if the Top of the piston is very dark, it means it is running on a perfect tune not running hot at all, it is actually running on the rich side, not as you indicated that it is running hot. a badly pitted or like sandpaper surface is the indication of the engine running hot.
__________________
Home of the Kamikaze Driver's Development Program = guaranteed podium finish
Kamikaze Toys and Hobbies Inc.
Follow us here on Facebook!
Team Kamikaze is offline   Reply With Quote
Old 05-21-2007, 08:07 PM   #230
Tech Initiate
 
Join Date: Jun 2006
Location: Brazil
Posts: 40
Send a message via MSN to Fabian K
Default

Quote:
Originally Posted by stefan
9 turns, damn!
Doesn't the needle fall out?

I have been running 6.75 turns, like LRP recommends, but I'll try your suggestion.

Yes, dont worry about too rich botton end needle , yes the needle goes outside too far dont worry no problem, i know LRP says 6,75 turns ou, but never works to me , the engine after just a few laps had problems with power on botton end due this settings , so i solved and worked very good on botton end needle very very very rich , same on my SPEC , SPEC 2 ......., and tune/lean the main needle until you reach a very good top speed thats all i do .
Fabian K is offline   Reply With Quote
Old 05-21-2007, 08:34 PM   #231
Tech Initiate
 
Join Date: Jun 2006
Location: Brazil
Posts: 40
Send a message via MSN to Fabian K
Default

Quote:
Originally Posted by Sp Racer
...so the saga continues

Fabian K - check your PM

I have tried richening up the bottom as you suggested, the problem is when I run it so rich, after straight when the excess rich mix clears out, the engine wants to run on, if I lower the idle speed then it loads up and wants to cut out.

Even though I ran the engine like this, after 10 min - lean bog, the top of the piston is very dark ( obviously hot) , yet the engine still runs cool

Damn strange...
my engine also is very dark on top of the piston do not worry like guys said its a little rich sinal , and its not danger color

Sp racer;
I answer your pm add my msn; [email protected]
Fabian K is offline   Reply With Quote
Old 05-24-2007, 08:34 PM   #232
Tech Elite
 
lil-bump's Avatar
 
Join Date: Aug 2006
Location: The Cold Great Lakes
Posts: 2,963
Trader Rating: 83 (100%+)
Default

Do the OS turbo plugs fit the Lrp spec3 engine
__________________
Elliott Hart
Serpent America
Desoto Racing Team
Chicky fan club member #9
One Eighth Racers of Toledo
lil-bump is offline   Reply With Quote
Old 05-30-2007, 07:06 AM   #233
Tech Regular
 
Join Date: Feb 2006
Posts: 373
Trader Rating: 4 (100%+)
Default

OS plugs fit and work great

Guys how do you resent you reset your main needle and mid needle, do you all back them in all the way and start your turns from there ???
jelayne is offline   Reply With Quote
Old 05-30-2007, 07:18 AM   #234
Tech Addict
 
Dynamite's Avatar
 
Join Date: May 2004
Location: Australia
Posts: 614
Send a message via MSN to Dynamite
Default

Quote:
Originally Posted by jelayne
OS plugs fit and work great

Guys how do you resent you reset your main needle and mid needle, do you all back them in all the way and start your turns from there ???
the taper of the plugs are different... not recommended.

get one of each and look at the conical (bottom of the plug), if you look at it and measure it you will see what i mean.
__________________
www.racingfactory.org
Kyosho RRR Evo | Sirio Evo III STI | Ko Radio
Dynamite is offline   Reply With Quote
Old 05-30-2007, 07:22 AM   #235
Tech Addict
 
Dynamite's Avatar
 
Join Date: May 2004
Location: Australia
Posts: 614
Send a message via MSN to Dynamite
Default

about the carby q.

generally wind the needle all the way in until it stops, and count from # turns out.

so if the setting was say 5 turns on the high speed: wind high speed all the way in until it stops. then count 5 complete turns out from closed.

hope this helps
__________________
www.racingfactory.org
Kyosho RRR Evo | Sirio Evo III STI | Ko Radio
Dynamite is offline   Reply With Quote
Old 06-10-2007, 03:39 PM   #236
Tech Elite
 
lil-bump's Avatar
 
Join Date: Aug 2006
Location: The Cold Great Lakes
Posts: 2,963
Trader Rating: 83 (100%+)
Default

Who carries the Picco or mega 2607 pipe. Looking for an good combo for a lrp spec 3 engine

Last edited by lil-bump; 06-10-2007 at 04:36 PM. Reason: edit
lil-bump is offline   Reply With Quote
Old 06-10-2007, 07:59 PM   #237
Tech Regular
 
Join Date: Feb 2006
Posts: 373
Trader Rating: 4 (100%+)
Default

Quote:
Originally Posted by Dynamite View Post
about the carby q.

generally wind the needle all the way in until it stops, and count from # turns out.

so if the setting was say 5 turns on the high speed: wind high speed all the way in until it stops. then count 5 complete turns out from closed.

hope this helps
Sorry for the late reply, thanks Dynamite
jelayne is offline   Reply With Quote
Old 06-25-2007, 04:21 PM   #238
Tech Master
 
Sp Racer's Avatar
 
Join Date: Dec 2002
Location: Melbourne, Australia
Posts: 1,624
Trader Rating: 8 (100%+)
Default

Finally starting to see some light at the end of the tunnel!

A big thank you to everyone that tried to help - I had the mighty Spec 3 absolutely flying last weekend at a local club meet.

It seems the problems I was having were maybe a combination of clutch setting, engine tune and pipe ! ( no wonder I struggled!)

Still, I am chasing that setup where the engine idles nice and doesn't load up excessively...at the moment , it will idle for 10 sec and load up to the point that it stalls ( but still idles long enough for a pit stop) maybe just a matter of sneaking up on the low end needle a bit at a time until it's just right

The current setup on my engine is...

LRP #7 plug ( sidewinder 16% race blend) 0.45 head shims, 1.5mm clutch nut pre-load (RRR)

Max power conical header with 2602 pipe...bottom end needle was approx 7 turns out (AZRI, this pipe combo , a lot more power and RPM than sirio 2611)

I found that gearing down first gear gave the motor some real punch out of the corners and It seems like it can pull a taller 2nd gear..

Sp Racer is offline   Reply With Quote
Old 06-26-2007, 07:22 AM   #239
Tech Elite
 
lil-bump's Avatar
 
Join Date: Aug 2006
Location: The Cold Great Lakes
Posts: 2,963
Trader Rating: 83 (100%+)
Default mega 2607 pipe and header

I recently mounted this pipe(Mega-2607) to my MTX-4. But the shape of the header positions my pipe too far away from the chassis. My pipe and springs take a beating being so far away from the chassis. Is there a different syle header that keeps the pipe closer to the chassis.
lil-bump is offline   Reply With Quote
Old 07-14-2007, 10:12 PM   #240
Tech Adept
 
charlesd's Avatar
 
Join Date: Apr 2005
Posts: 242
Default

Quick question,

I'm in the market for a new engine and saw the spec 2 at 150$. (i'm on a budget).

I'm using an sts d3r and it's quite dead now after 2 seasons. How does the spec 2 compare to the sts d3r? If not comparable to a d3r, what other engine would you compare it to?

Thanks
charlesd is offline   Reply With Quote
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
Nitro Motors Clearance RC2Xtreme R/C Items: For Sale/Trade 0 01-15-2006 01:32 PM
Two nitro motors....MUST SELL racer_RR R/C Items: For Sale/Trade 3 08-26-2004 01:41 PM
Two Nitro motors for sale. John Fontaine R/C Items: For Sale/Trade 26 03-26-2004 03:53 PM
Old Nitro Motors John Q Onroad Nitro Engine Zone 2 03-17-2004 04:26 PM
Nitro Motors cnitro R/C Items: For Sale/Trade 0 03-12-2004 06:53 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 04:22 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