Rieju & GasGas Legacy Riders Club Forum  

Go Back   Rieju & GasGas Legacy Riders Club Forum > GasGas Enduro Technical Forums > Enduro Intake/Carburetion - 2 stroke

Enduro Intake/Carburetion - 2 stroke Jetting, Reeds, Air Filters, etc.


Reply
 
Thread Tools Display Modes
  #1  
Old 08-22-2006, 06:23 PM
MattR's Avatar
MattR MattR is offline
Super Moderator
 
Join Date: Jul 2006
Location: Temperance, MI
Posts: 958
Default FAQ: Premix Calculations

Question:
The GasGas manual specifies a premix ratio of 50:1 (or 2% oil). How do you determine the required amount of oil for different quantities of gas?

Answer:
The manual does specify 50:1. However, many riders have found other ratios such as 40:1 and 36:1 to work well in GasGas bikes. Personally, I like to use 40:1 in my bike. There are products on the market such as "Ratio Rite" which help riders determine the amount of oil per gallon of gas.

A better method for determining the oil for any quantity of gas is to develop your own premix table. Your premix table will allow you to determine oil for smaller quantities of fuel (such as emergencies on longer rides) or mix up larger quantities of fuel before a ride.

Here are premix tables that I have created for reference. I created tables for the most common premix ratios. You can print out these tables for your fanny pack or garage use.









__________________
Matt
Current: 2009 Yamaha FZ1
Previous: 2001 GasGas TXT280, 2001 GasGas XC250, 2004 KTM 200EXC, 2007 GasGas EC250, 2007 Husqvarna SM610, 2008 Husqvarna WB165

Last edited by MattR; 08-23-2006 at 06:03 PM.
Reply With Quote


  #2  
Old 08-28-2006, 11:35 AM
flybars flybars is offline
Senior Member
 
Join Date: Aug 2006
Location: Cashmere,Washington
Posts: 643
Default Premix Calculations

Sweet! Takes all the guesswork out of it. Eliminates mistakes.
__________________
'14 Beta 300rr
'05 GG DE300
'03 GG EC250
'01 XR440
'09 FZ1
Reply With Quote
  #3  
Old 08-31-2006, 06:12 PM
tprnottp tprnottp is offline
Member
 
Join Date: Aug 2006
Location: South of the Mason/Dixon Line
Posts: 51
Default

Matt,

You be da man!

Thanks for doing the leg work for the rest of us.

TP
'03 EC 300
Reply With Quote
  #4  
Old 09-01-2006, 07:37 PM
MattR's Avatar
MattR MattR is offline
Super Moderator
 
Join Date: Jul 2006
Location: Temperance, MI
Posts: 958
Default

Thanks! Glad you liked them.
__________________
Matt
Current: 2009 Yamaha FZ1
Previous: 2001 GasGas TXT280, 2001 GasGas XC250, 2004 KTM 200EXC, 2007 GasGas EC250, 2007 Husqvarna SM610, 2008 Husqvarna WB165
Reply With Quote
  #5  
Old 09-04-2006, 04:12 AM
Hawkeye Hawkeye is offline
Senior Member
 
Join Date: Aug 2006
Location: Iowa
Posts: 156
Default

My brother did a similar chart many years ago, but he just picked his ratio and then listed the oz. needed to mix with gas in tenths of a gallon. He formatted it out to look like a rollchart and then taped it to his front fender or his gas tank. When we trailrode, like the Six Days of Michigan, it worked great to get the proper ratio in your tank after topping it off at the gas pump.
__________________
"Conviction is a luxury of those on the sidelines."

'13 Beta 300RR - race bike
'02 GG300XC - "Billie Baroo"
'01 DR650
'02 GG 280 Pro
'06 YZ 250
'07 WR450
'00 TT125RL
'94 YZ200 - custom keeper
Reply With Quote
  #6  
Old 07-23-2009, 07:06 PM
MattR's Avatar
MattR MattR is offline
Super Moderator
 
Join Date: Jul 2006
Location: Temperance, MI
Posts: 958
Default

Here is a table for 43:1 premix ratio:
As you can see, this makes it easy with 3 oz. per gallon.

__________________
Matt
Current: 2009 Yamaha FZ1
Previous: 2001 GasGas TXT280, 2001 GasGas XC250, 2004 KTM 200EXC, 2007 GasGas EC250, 2007 Husqvarna SM610, 2008 Husqvarna WB165
Reply With Quote
  #7  
Old 07-23-2009, 07:30 PM
Brian VT Brian VT is offline
Senior Member
 
Join Date: Jul 2006
Location: Vermont, USA
Posts: 827
Default

I like the 3 oz. per gallon rate.
I pack an 8 1/2 oz. Listerine bottle of oil. It's flat and sturdy. I pour in oil and make marks for every 1 1/2 oz.
I've never used all 8 oz. but there always seems to be someone who forgot to pack oil.
Reply With Quote
  #8  
Old 08-15-2010, 06:49 AM
lankydoug lankydoug is offline
Senior Member
 
Join Date: Jul 2010
Posts: 491
Default

If you're home and or have access to the internet here is a link that is useful. If I top off my fuel storage can before a trip I can enter the decimal amount and get the exact calculation as well

http://www.qddev.com/demos/sprockets...etpremix.shtml
Reply With Quote
  #9  
Old 06-02-2011, 06:16 PM
GasGas's Avatar
GasGas GasGas is offline
Senior Member
 
Join Date: Aug 2007
Location: Nova Scotia, Canada
Posts: 694
Default

Man I'm glad we went metric back in the 70's. All this stuff is so much easier to figure out in litres versus gal. When working in litres just convert to ml ( litres * 1000) and divide by your mix ratio. So for mix ratio of 36:1 for 20 litres of fuel just divide 20000 by 36 = 555 ml
__________________
2018 EC 300
Reply With Quote
  #10  
Old 07-26-2012, 12:58 PM
steliost's Avatar
steliost steliost is offline
Platinum Level Site Supporter
 
Join Date: May 2012
Location: Northern Greece
Posts: 73
Default

Hi all, I thought this would be the right place to post this. What do you think about 1.7-1.8 % oil ratio? The local gasgas dealer and mechanic, very experienced on riding, racing and maintaining 2 strokes mostly GG and Husaberg, swears by using 1.5% or 66:1 (!!!) on his bikes, even on his 125 2012 husaberg. His claims: less spooge, better performance without risking to seize the piston and bearings. Also he insists on Agip premix oil. What is your opinion on the subject?
Reply With Quote
Reply



Thread Tools
Display Modes

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


Similar Threads
Thread Thread Starter Forum Replies Last Post
premix W8TSON Enduro Engine - 2 stroke 31 08-11-2009 09:52 AM
what ratio to premix at? j@y Enduro Engine - 2 stroke 16 05-18-2007 09:53 AM
premix ratio for 300 two-stroke gateman Enduro Engine - 2 stroke 3 09-27-2006 06:29 PM




All times are GMT -5. The time now is 12:06 AM.


Powered by vBulletin® Version 3.8.6
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Copyright 2009 - GasGasRider.org