R/C Tech Forums

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

Reply
 
Thread Tools Search this Thread
Old 05-01-2010, 05:20 AM   #16
Tech Fanatic
 
mudboger07's Avatar
 
Join Date: Dec 2008
Posts: 939
Default

It sounds like a richen up the hsn 2 hours at a time untill it runs wot ok, then do the fuel line pinch test to check your lsn and reset idle.
__________________
Proud Sponsor of a 10 year old.....
losi 8ightB 2.0/DX3S/VSpec* Revo-3.3*mod slash*blade-mcx*axial GC2
Team Nitro** F-14*Team Terribles/Answer-RC

Ken
mudboger07 is offline   Reply With Quote
Old 05-01-2010, 06:18 AM   #17
Tech Master
 
Bigedmond's Avatar
 
Join Date: Jul 2005
Posts: 1,837
Trader Rating: 18 (100%+)
Default

Like everyone said, sounds lean on top. I would bet that you LSN is very rich masking the problem.

I would go 4 hours richer on the HSN, and 2 leaner on the LSN. You will likely need to go more, but that would be where i would start. Good Luck
Bigedmond is offline   Reply With Quote
Old 05-01-2010, 10:33 AM   #18
Tech Apprentice
 
Join Date: Jan 2010
Location: Albany Ga
Posts: 99
Trader Rating: 11 (100%+)
Default

Your best action is to read the tuning bible stickied at the top of this forum. That way you are able to make the needed adjustments on the spot and avoid damage to the engine. Referring to people on here is OK to do for a second opinion, but you're the only one there to actually see what's going on. If you can get around others that have well tuned vehicles it is helpful for smoke/sound/performance reference.
Wrencher is offline   Reply With Quote
Old 05-01-2010, 01:47 PM   #19
Tech Adept
 
Join Date: Apr 2010
Posts: 151
Trader Rating: 1 (100%+)
Default

Quote:
Originally Posted by The Wedge View Post
what did you do to fix it?
Richened it up as the others said.
K-Train is offline   Reply With Quote
Old 05-01-2010, 02:38 PM   #20
Tech Initiate
 
Join Date: Jan 2010
Posts: 21
Default

Thanks for the replies. This is the first time running the car in a few days and my first attempt at tuning it. I think I have the HSN under control. I definitely rinchened it and full throttle seems to be working as it should now. Now my issue is getting the low speed correct. It's very slow during the initial acceleration.
The Wedge is offline   Reply With Quote
Old 05-01-2010, 04:28 PM   #21
Tech Elite
 
MotoGod's Avatar
 
Join Date: Feb 2009
Location: Clayton, NC
Posts: 3,701
Trader Rating: 112 (100%+)
Send a message via AIM to MotoGod Send a message via Yahoo to MotoGod
Default

Quote:
Originally Posted by The Wedge View Post
Thanks for the replies. This is the first time running the car in a few days and my first attempt at tuning it. I think I have the HSN under control. I definitely rinchened it and full throttle seems to be working as it should now. Now my issue is getting the low speed correct. It's very slow during the initial acceleration.
If it launches slow...lean the LSN 1 hour at a time until you get a good launch out of it. Once you think you have it, adjust your idle down (it will go up as you lean the LSN) and then pinch the fuel line. If it idles up and stalls in 2-3 seconds....your LSN should be darn close to what it needs to be.
__________________
Scott Pouliot
Current Race Rigs: TLR 8ight 3.0/3.0E/3.0T/22/22-4
==============================================
Thanks to my 2015 Sponsors: LutzRC, RadioPost, AKA Tires, RC Addition Products, Nitro Pro Fuels
MotoGod is offline   Reply With Quote
Old 05-01-2010, 05:32 PM   #22
Registered User
 
UltegraSTI's Avatar
 
Join Date: Jul 2005
Posts: 7,171
Trader Rating: 20 (100%+)
Default

i highly suggest you pick up a copy of trinity/car action's nitro engine tuning book. its a very effective source in helping u understand and take care of your engines makin em run well and thus more enjoyable for you. enjoy the car. its a great choice.

R
UltegraSTI is offline   Reply With Quote
Old 05-02-2010, 02:26 AM   #23
Tech Elite
 
dishsoap's Avatar
R/C Tech Elite Subscriber
 
Join Date: Jan 2009
Location: Tucson, AZ
Posts: 2,457
Trader Rating: 7 (100%+)
Default

Quote:
Originally Posted by MotoGod View Post
If it launches slow...lean the LSN 1 hour at a time until you get a good launch out of it. Once you think you have it, adjust your idle down (it will go up as you lean the LSN) and then pinch the fuel line. If it idles up and stalls in 2-3 seconds....your LSN should be darn close to what it needs to be.
On the pinch test what does it mean if you can go 5 or 6 seconds before it starts to die while pinching.
__________________
HobbyTown USA Tucson!!! HobbyTown USA SRS!!!!
dishsoap is offline   Reply With Quote
Old 05-02-2010, 05:50 AM   #24
Tech Initiate
 
Join Date: Jan 2010
Posts: 21
Default

Quote:
Originally Posted by MotoGod View Post
If it launches slow...lean the LSN 1 hour at a time until you get a good launch out of it. Once you think you have it, adjust your idle down (it will go up as you lean the LSN) and then pinch the fuel line. If it idles up and stalls in 2-3 seconds....your LSN should be darn close to what it needs to be.
I'll try this next time. The manual actually goes into this a little.
Quote:
Originally Posted by ultegrasti View Post
i highly suggest you pick up a copy of trinity/car action's nitro engine tuning book. its a very effective source in helping u understand and take care of your engines makin em run well and thus more enjoyable for you. enjoy the car. its a great choice.

R
I will definitely check it out since I don't think this will be my last nitro rc!
The Wedge is offline   Reply With Quote
Old 05-02-2010, 11:30 AM   #25
Tech Master
 
neobart's Avatar
 
Join Date: Jan 2010
Location: Denmark
Posts: 1,413
Trader Rating: 4 (100%+)
Default

Quote:
Originally Posted by dishsoap View Post
On the pinch test what does it mean if you can go 5 or 6 seconds before it starts to die while pinching.
That means you're too rich, if it dies instantly you're to lean. It should die within 3-5 seconds with a tiny increase in RPM just before it cuts out.
__________________
Clockwork Racing Engines
neobart is offline   Reply With Quote
Old 05-02-2010, 01:41 PM   #26
Tech Elite
 
dishsoap's Avatar
R/C Tech Elite Subscriber
 
Join Date: Jan 2009
Location: Tucson, AZ
Posts: 2,457
Trader Rating: 7 (100%+)
Default

Quote:
Originally Posted by neobart View Post
That means you're too rich, if it dies instantly you're to lean. It should die within 3-5 seconds with a tiny increase in RPM just before it cuts out.
Okay so would lean the low or the high or both.

Thanks
__________________
HobbyTown USA Tucson!!! HobbyTown USA SRS!!!!
dishsoap is offline   Reply With Quote
Old 05-02-2010, 01:43 PM   #27
Tech Elite
 
MotoGod's Avatar
 
Join Date: Feb 2009
Location: Clayton, NC
Posts: 3,701
Trader Rating: 112 (100%+)
Send a message via AIM to MotoGod Send a message via Yahoo to MotoGod
Default

The pinch test is done at idle to test the LSN....so it would be the LSN ;-)
__________________
Scott Pouliot
Current Race Rigs: TLR 8ight 3.0/3.0E/3.0T/22/22-4
==============================================
Thanks to my 2015 Sponsors: LutzRC, RadioPost, AKA Tires, RC Addition Products, Nitro Pro Fuels
MotoGod is offline   Reply With Quote
Old 05-02-2010, 02:02 PM   #28
Tech Elite
 
dishsoap's Avatar
R/C Tech Elite Subscriber
 
Join Date: Jan 2009
Location: Tucson, AZ
Posts: 2,457
Trader Rating: 7 (100%+)
Default

Quote:
Originally Posted by MotoGod View Post
The pinch test is done at idle to test the LSN....so it would be the LSN ;-)
Duhhhhhhh!!!!!!!!!! j/k. Sometimes you just have to stop and think with this hobby. What a brain fart that was.

Thanks
__________________
HobbyTown USA Tucson!!! HobbyTown USA SRS!!!!
dishsoap is offline   Reply With Quote
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
OS FS26S-C 4-stroke development mxwrench Offroad Nitro Engine Forum 1633 Today 11:17 AM
Team Losi JRXS Type-R Andrew Gray Electric On-Road 13454 07-11-2017 07:26 PM
lrp spx stock spec chuckharrisjr Electric On-Road 1131 02-22-2017 10:58 PM
Tekin RS ESC sensored Jeff Cuffs Electric On-Road 23359 10-02-2016 05:57 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 08:59 PM.


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