Help & FAQs    Search BCF    Members    Groups    Events Calendar
Resend my activation email : Register : Log in 
BCF: Bike Chat Forums


rs 50 or 2 stroke knowledge

 Reply to topic
Bike Chat Forums Index -> The Workshop
View previous topic : View next topic  
Author Message

Hutchysrs50
World Chat Champion



Joined: 15 Sep 2008
Karma :
PostPosted: 23:15 - 25 Dec 2008    Post subject: rs 50 or 2 stroke knowledge Reply with quote
right my rs 50 is running crap, but that is NOT what i would like people to ask about... Mr. Green

reeeet!
would having NO airfilter on make it run Rich OR run Lean.

Only answer if you knwo the answer please, had people say the "THINK" or "HEARD" doesnt help me here, and its christmas and iv been drinking and its pissing me off.

or just leave a comment if you knwo about the Mixture screw on delotro 13mm 16mm 21mm (wich way does what)

Merry Christmas.... Ho Ho Ho... Neutral
____________________
Gilera SC 125 - Current
 Back to top
View user's profile Send private message You must be logged in to rate posts

RS2MATRIX
Spanner Monkey



Joined: 03 Apr 2008
Karma :
PostPosted: 23:17 - 25 Dec 2008    Post subject: Reply with quote
Well, no air filter leaves a flood gate for air, so LEAN Mr. Green
 Back to top
View user's profile Send private message You must be logged in to rate posts

Hutchysrs50
World Chat Champion



Joined: 15 Sep 2008
Karma :
PostPosted: 23:18 - 25 Dec 2008    Post subject: Reply with quote
RS2MATRIX wrote:
Well, no air filter leaves a flood gate for air, so LEAN Mr. Green


thanks jesus.

now, are you sure about this, not read it on a christmas cracker or made it up
____________________
Gilera SC 125 - Current
 Back to top
View user's profile Send private message You must be logged in to rate posts

ms51ves3
Super Spammer



Joined: 08 Jun 2007
Karma :
PostPosted: 00:08 - 26 Dec 2008    Post subject: Reply with quote
Hutchysrs50 wrote:
RS2MATRIX wrote:
Well, no air filter leaves a flood gate for air, so LEAN Mr. Green


thanks jesus.

now, are you sure about this, not read it on a christmas cracker or made it up


Well what do you think? An airbox is more restrictive than none at all, so if there's less restriction to the air, more can flow.

Removing an air filter or airbox will make the bike run lean.

Last edited by ms51ves3 on 00:16 - 26 Dec 2008; edited 1 time in total
 Back to top
View user's profile Send private message You must be logged in to rate posts

Hutchysrs50
World Chat Champion



Joined: 15 Sep 2008
Karma :
PostPosted: 00:12 - 26 Dec 2008    Post subject: Reply with quote
ahh you replyed to my other topic aswell, i shall give you some karma after this.

do you KNOW which way to turn the mixture screw to make is richer or leaner?

THANKS Karma
____________________
Gilera SC 125 - Current
 Back to top
View user's profile Send private message You must be logged in to rate posts

ms51ves3
Super Spammer



Joined: 08 Jun 2007
Karma :
PostPosted: 00:18 - 26 Dec 2008    Post subject: Reply with quote
Hutchysrs50 wrote:
ahh you replyed to my other topic aswell, i shall give you some karma after this.

do you KNOW which way to turn the mixture screw to make is richer or leaner?

THANKS Karma


On an air screw, you turn it clockwise to make the mixture richer (more fuel) and anti clockwise to make the mixture leaner (less fuel).
 Back to top
View user's profile Send private message You must be logged in to rate posts

Hutchysrs50
World Chat Champion



Joined: 15 Sep 2008
Karma :
PostPosted: 00:20 - 26 Dec 2008    Post subject: Reply with quote
ms51ves3 wrote:
Hutchysrs50 wrote:
ahh you replyed to my other topic aswell, i shall give you some karma after this.

do you KNOW which way to turn the mixture screw to make is richer or leaner?

THANKS Karma


On an air screw, you turn it clockwise to make the mixture richer (more fuel) and anti clockwise to make the mixture leaner (less fuel).


perfect, as i thought, but i recall you saying difernt in my other topic
____________________
Gilera SC 125 - Current
 Back to top
View user's profile Send private message You must be logged in to rate posts

ms51ves3
Super Spammer



Joined: 08 Jun 2007
Karma :
PostPosted: 00:26 - 26 Dec 2008    Post subject: Reply with quote
Hutchysrs50 wrote:
ms51ves3 wrote:
On an air screw, you turn it clockwise to make the mixture richer (more fuel) and anti clockwise to make the mixture leaner (less fuel).


perfect, as i thought, but i recall you saying difernt in my other topic


You recall wrong Wink

ms51ves3 wrote:
Turning the screw clockwise (in) will decrease the air flow on the idle circuit making the mix richer.
 Back to top
View user's profile Send private message You must be logged in to rate posts

Hutchysrs50
World Chat Champion



Joined: 15 Sep 2008
Karma :
PostPosted: 00:31 - 26 Dec 2008    Post subject: Reply with quote
yeh i went back to check and found the same thing Embarassed

But lets not play the blame game here.... Mr. Green










dont you just love christmas... 23 minutes left of it aswell... Thumbs Up Mr. Green

hope you enjoyed yours Very Happy
____________________
Gilera SC 125 - Current
 Back to top
View user's profile Send private message You must be logged in to rate posts

Hutchysrs50
World Chat Champion



Joined: 15 Sep 2008
Karma :
PostPosted: 14:16 - 26 Dec 2008    Post subject: Reply with quote
ms51ves3 wrote:
On an air screw, you turn it clockwise to make the mixture richer (more fuel) and anti clockwise to make the mixture leaner (less fuel).



Would you happen to know Which say on the needle hight settings does what Razz if you do, kinda give a step by step way of changing it... as some people say move the needle up, but mean the circlip up (putting the needle down)

chanks!
____________________
Gilera SC 125 - Current
 Back to top
View user's profile Send private message You must be logged in to rate posts

Kickstart
The Oracle



Joined: 04 Feb 2002
Karma :
PostPosted: 14:22 - 26 Dec 2008    Post subject: Reply with quote
Hi

Running without a filter should make it leaner.

The idle mixture is adjusted with a screw normally, but there are 2 types. One lets more fuel in when you undo it, richening the mixture, the other lets more air through the idle circuit and undoing it leans the mixture. In either case only relevant on a closed throttle, or with tiny openings.

Needle may have a clip and a set of positions. Moving the clip down towards the pointed end of the needle means that the needle sits higher in the slide, and so for the same throttle position a narrower part of the needle is obstructing the fuel from the nozzle in the carb which gives a richer mixture.

All the best

Keith
____________________
Traxpics, track day and racing photographs - Bimota Forum - Bike performance / thrust graphs for choosing gearing
 Back to top
View user's profile Send private message Send e-mail You must be logged in to rate posts

Hutchysrs50
World Chat Champion



Joined: 15 Sep 2008
Karma :
PostPosted: 14:27 - 26 Dec 2008    Post subject: Reply with quote
Kickstart wrote:
Hi

Running without a filter should make it leaner.

The idle mixture is adjusted with a screw normally, but there are 2 types. One lets more fuel in when you undo it, richening the mixture, the other lets more air through the idle circuit and undoing it leans the mixture. In either case only relevant on a closed throttle, or with tiny openings.

Needle may have a clip and a set of positions. Moving the clip down towards the pointed end of the needle means that the needle sits higher in the slide, and so for the same throttle position a narrower part of the needle is obstructing the fuel from the nozzle in the carb which gives a richer mixture.

All the best

Keith


Thank you Mr. Green

i asume you know alot of 2 stokes... so..

im running a 110 jet (as you may remember from my other thred) and i know its too big, but i cant get a smaller one for a while Thumbs Down

anyway, im trying to "bodge" the fuel with the mixture screw, needle hight and idle screw... im also thinking about up-rating the oil flow aswell, after this the bike will be setup to run for an 80cc big bore kit, think it would run ok on a standard 50cc with 80cc settings? Embarassed
____________________
Gilera SC 125 - Current
 Back to top
View user's profile Send private message You must be logged in to rate posts

Kickstart
The Oracle



Joined: 04 Feb 2002
Karma :
PostPosted: 15:01 - 26 Dec 2008    Post subject: Reply with quote
Hi

Oil pump won't make a massive difference. You can easily adjust it for a small difference though. No point in doing this in advance of fitting the 80cc kit.

The idle mixture screw, needle and main jet all control different parts of the throttle openings fueling. You cannot really use the idle mixture screw and needle adjustments to make up for a far too big main jet. Main jet basically controls the fueling at full throttle (which in a 50cc bike is going to be what you are on 90% of the time).

All the best

Keith
____________________
Traxpics, track day and racing photographs - Bimota Forum - Bike performance / thrust graphs for choosing gearing
 Back to top
View user's profile Send private message Send e-mail You must be logged in to rate posts

Hutchysrs50
World Chat Champion



Joined: 15 Sep 2008
Karma :
PostPosted: 15:36 - 26 Dec 2008    Post subject: Reply with quote
Kickstart wrote:
Hi

Oil pump won't make a massive difference. You can easily adjust it for a small difference though. No point in doing this in advance of fitting the 80cc kit.

The idle mixture screw, needle and main jet all control different parts of the throttle openings fueling. You cannot really use the idle mixture screw and needle adjustments to make up for a far too big main jet. Main jet basically controls the fueling at full throttle (which in a 50cc bike is going to be what you are on 90% of the time).

All the best

Keith

Ok thanks, shame you didnt reply quicker, iv just had to push it home Mad
and its rather cold out!!

it was running fine for about a mile (away from home) at 1.1 mile (on way back) didnt wona know.... Rolling Eyes
____________________
Gilera SC 125 - Current
 Back to top
View user's profile Send private message You must be logged in to rate posts
Old Thread Alert!

The last post was made 17 years, 290 days ago. Instead of replying here, would creating a new thread be more useful?
  Display posts from previous:   
This page may contain affiliate links, which means we may earn a small commission if a visitor clicks through and makes a purchase. By clicking on an affiliate link, you accept that third-party cookies will be set.

Post new topic   Reply to topic    Bike Chat Forums Index -> The Workshop All times are GMT + 1 Hour
Page 1 of 1

 
 You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You cannot download files in this forum

Read the Terms of Use! - Powered by phpBB © phpBB Group
 
Debug Mode: ON - Server: birks (www) - Page Generation Time: 0.09 Sec - Server Load: 0.65 - MySQL Queries: 13 - Page Size: 86.9 Kb