When is it neccessary to....  
View related threads: (in this forum | in all forums)

Tower Hobbies
Enter up to 4 keywords or Tower stock numbers
Logged in as Guest



Users viewing this topic: none
  Printable Version
       



All Forums >> RC Cars, Buggies, Trucks, Tanks and more >> RC Monster Trucks >> HPI Monster Truck Forum >> When is it neccessary to.... Page: [1]

Login
Message << Older Topic   Newer Topic >>
When is it neccessary to.... - 7/12/2008 1:42:36 AM   
dadirtsavage


 

Posts: 164
Joined: 8/18/2007
From: Kalihi, HI, USA
Status: offline 		When is it necessary to mess with the low speed needles or idle needles? I've never messed with them. Only the High speed needle and I got my savage running quite well, but I don't know if I'm missing out on power, or putting uneeded stress or heat on my f4.6 engine. thanks for the help!
       Post #: 1

RE: When is it neccessary to.... - 7/12/2008 1:46:29 AM   
BudBud



Posts: 2692
Joined: 12/21/2006
From: Salina, KS, USA
Status: offline 		You are probably missing a lot of low end snap. No damage to be done though, a little rich on the low speed will not hurt it. I will bet after a high speed run, your truck cools off in a hurry! When you reset the low speed needle, you will probably have to slow the idle down a little too. BB

_____________________________

Doing my best to fill a 55 gallon drum with broken or worn out R/C parts.... 8^)

(in reply to dadirtsavage)
       Post #: 2

RE: When is it neccessary to.... - 7/12/2008 1:48:49 AM   
dadirtsavage


 

Posts: 164
Joined: 8/18/2007
From: Kalihi, HI, USA
Status: offline
quote:

ORIGINAL: BudBud

You are probably missing a lot of low end snap. No damage to be done though, a little rich on the low speed will not hurt it. I will bet after a high speed run, your truck cools off in a hurry! When you reset the low speed needle, you will probably have to slow the idle down a little too. BB


oh i see. so which one should i mess with first? i know i should get the high speed needle to safe but peak performance. but what shall i do from there??

(in reply to BudBud)
       Post #: 3

RE: When is it neccessary to.... - 7/12/2008 2:35:54 AM   
GANGstar305



Posts: 843
Joined: 9/4/2006
From: miami, FL, USA
Status: online
quote:

ORIGINAL: BudBud

You are probably missing a lot of low end snap. No damage to be done though, a little rich on the low speed will not hurt it. I will bet after a high speed run, your truck cools off in a hurry!
When you reset the low speed needle, you will probably have to slow the idle down a little too. BB



im gonna do that from now on, lol incredible i never thought of that

_____________________________

BUILT NOT BOUGHT :]

(in reply to BudBud)
       Post #: 4

RE: When is it neccessary to.... - 7/12/2008 2:37:40 AM   
dadirtsavage


 

Posts: 164
Joined: 8/18/2007
From: Kalihi, HI, USA
Status: offline
quote:

ORIGINAL: GANGstar305


quote:

ORIGINAL: BudBud

You are probably missing a lot of low end snap. No damage to be done though, a little rich on the low speed will not hurt it. I will bet after a high speed run, your truck cools off in a hurry!
When you reset the low speed needle, you will probably have to slow the idle down a little too. BB



im gonna do that from now on, lol incredible i never thought of that


haha. I think he meant that it comes rich from factory. but go ahead and richen it. and lean the high speed out a hair and set the idle a little higher.

(in reply to GANGstar305)
       Post #: 5

RE: When is it neccessary to.... - 7/12/2008 3:34:15 AM   
BudBud



Posts: 2692
Joined: 12/21/2006
From: Salina, KS, USA
Status: offline 		Hpi video that you should watch! It is one of the best tuning videos out there. A rich low end will kill your off line acceleration. It was also bring you engine temperatures down quickly when it returns to idle as it pumps fuel into the chamber faster than the engine can burn it. BB

_____________________________

Doing my best to fill a 55 gallon drum with broken or worn out R/C parts.... 8^)

(in reply to dadirtsavage)
       Post #: 6

RE: When is it neccessary to.... - 7/12/2008 7:18:32 AM   
dadirtsavage


 

Posts: 164
Joined: 8/18/2007
From: Kalihi, HI, USA
Status: offline
quote:

ORIGINAL: BudBud

Hpi video that you should watch! It is one of the best tuning videos out there. A rich low end will kill your off line acceleration. It was also bring you engine temperatures down quickly when it returns to idle as it pumps fuel into the chamber faster than the engine can burn it. BB


Oh thanks man that helps alot. i didnt know high speed needle adjusts the top end and low speed needle adjusts the low end. as obvious as it is....lol . so if i lean it out a lil bit on the low end my acceleration will be alot higher?

(in reply to BudBud)
       Post #: 7

RE: When is it neccessary to.... - 7/12/2008 8:46:56 AM   
BudBud



Posts: 2692
Joined: 12/21/2006
From: Salina, KS, USA
Status: offline 		If you go too far your engine will stall instead of accelerating. That is a dangerous condition. You will know when you are getting too lean as the engine will run on or be slow to come back to an idle.

_____________________________

Doing my best to fill a 55 gallon drum with broken or worn out R/C parts.... 8^)

(in reply to dadirtsavage)
       Post #: 8

RE: When is it neccessary to.... - 7/12/2008 8:50:22 AM   
dadirtsavage


 

Posts: 164
Joined: 8/18/2007
From: Kalihi, HI, USA
Status: offline
quote:

ORIGINAL: BudBud

If you go too far your engine will stall instead of accelerating. That is a dangerous condition. You will know when you are getting too lean as the engine will run on or be slow to come back to an idle.


yeah i know. but it will have better acceleration if i get it just right. correct?

(in reply to BudBud)
       Post #: 9

RE: When is it neccessary to.... - 7/12/2008 10:21:01 AM   
BudBud



Posts: 2692
Joined: 12/21/2006
From: Salina, KS, USA
Status: offline 		You will see a huge difference in acceleration off idle if your truck is still at the rich factory settings, enormous difference, it will not be the same truck....

_____________________________

Doing my best to fill a 55 gallon drum with broken or worn out R/C parts.... 8^)

(in reply to dadirtsavage)
       Post #: 10

Page:   [1]
All Forums >> RC Cars, Buggies, Trucks, Tanks and more >> RC Monster Trucks >> HPI Monster Truck Forum >> When is it neccessary to....
Page: [1]





Jump to:


Google 



Search | Marketplace | Event Calendar | Local Clubs | Magazine | Product Ratings | New Products | Discussion Forums

Photo Gallery | Member Video Posts | RCU Video Gallery | Instructor Search | Field|Track|Marina Search

Advertisers | Hobby Vendor Resources | Rate Manufacturers | Sign In/Sign Up

SITE MAP!   : :   FORUM RULES

© 2001 - 2007 24-7 RC, LLC, all rights reserved.

Charities we support that also need your help
Yorkie Rescue | Humane Society | ASPCA | Crohn's-Colitis America

Kaango.com Classifieds

0.656RCU1