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 02-12-2012, 11:45 PM   #1
Tech Addict
 
Join Date: Oct 2008
Location: Collie Western Australia.
Posts: 733
Trader Rating: 11 (100%+)
Default Tuning a 3 Needle Carb

Hello all...

new to nitro.. got a fw-05rr with all the race bits on it.. handles extremely well and very happy indeed..

the motor on the other hand has an idle, high, med and low adjustments and i cannot seem to get it to run right.

The engine is a JP Racing Eagle black series. I bought it off another racer that was his end of season leftovers.. not run.

I have played with the car a few times, and struggling to get it to run well..

Essentially i need a direction on actually tuning with a med adjustment... everything i have read says just leave it at factory... i dont have factory settings... everything is for the normal carb.. low and high adj.

I cannot find anywhere the factory setting online... anyone have an idea of where to look?

cheers stanga
__________________
Just keep tellin her its cheaper than real cars.... safer too
Stangas is offline   Reply With Quote
Old 02-13-2012, 04:47 AM   #2
Tech Apprentice
 
MRX4XXXX's Avatar
 
Join Date: Nov 2009
Location: Europe
Posts: 96
Default

Quote:
Originally Posted by Stangas View Post
Hello all...

new to nitro.. got a fw-05rr with all the race bits on it.. handles extremely well and very happy indeed..

the motor on the other hand has an idle, high, med and low adjustments and i cannot seem to get it to run right.

The engine is a JP Racing Eagle black series. I bought it off another racer that was his end of season leftovers.. not run.

I have played with the car a few times, and struggling to get it to run well..

Essentially i need a direction on actually tuning with a med adjustment... everything i have read says just leave it at factory... i dont have factory settings... everything is for the normal carb.. low and high adj.

I cannot find anywhere the factory setting online... anyone have an idea of where to look?

cheers stanga
If you mean the middle needle, the needle opposite to the front needle, the normal position for that is so that the end of the screw is on the same level as carburetor body.

If it's nearly there, keep it as it is, if it's far from that, move it there.

1. If you get the engine running, you don't need to know the factory settings. Just open the main needle like 1/2 to 1 turn and start driving the track. (do not mind the idle at this point)

2. Drive like 10 laps or something as fast as you can. Then measure the temp with a good quality temp gauge (Exergen or similar). Close the main needle little by little as lon as you get the temp 100C or little above.

If you don't have a good quality temp gauge, it's better to use water and a tea-spoon rather than a bad temp gauge. Drop a little of water on the glow plug and you get the exact reading. The goal is to get the water boiling like boiling potatos in kitchen.

3. Once you find the 100C, adjust the idle correct with the idle screw, not the front needle.

4. Then you can adjust the front needle by checking the amount of smoke coming when accelerate out from the curve. The goal is to get some smoke 2-5metres out from the curve depending on the track.

5. You are done!!

-X-
MRX4XXXX is offline   Reply With Quote
Old 02-13-2012, 06:06 AM   #3
Tech Master
 
GREGORY!'s Avatar
 
Join Date: Jun 2006
Location: Greece
Posts: 1,076
Trader Rating: 1 (100%+)
Default

start from here http://www.jpracing.com/en/products/...carbu_fx12.php

but before that read here:http://www.rctech.net/forum/onroad-n...ing-bible.html.
__________________
" kyosho rrr wc-team orion crf "
" serpent 966-mega zx21 EM "
" mugen mbx6-picco p7r evo 2 "
GREGORY! is offline   Reply With Quote
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
3 Needle Tuning Zizu Nitro On-Road 16 12-06-2003 10:59 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 12:01 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