Octane??
Grand HDF Member
Joined: May 2008
Posts: 4,585
Likes: 673
From: Rolla
Probably not.
http://en.wikipedia.org/wiki/Octane_rating
In the US we use: (R+M)/2
http://en.wikipedia.org/wiki/Octane_rating
In the US we use: (R+M)/2
Because of the 8 to 12 octane number difference between RON and MON noted above, the AKI shown in Canada and the United States is 4 to 6 octane numbers lower than elsewhere in the world for the same fuel
HDF Community Team
Joined: Nov 2012
Posts: 6,189
Likes: 2,419
From: USA
Laughing. The thousands folk blow on these bikes, and your going to knot your knickers over a little bit of gas?
Grand HDF Member
Joined: May 2008
Posts: 4,585
Likes: 673
From: Rolla
When I was a kid, the next door neighbor had one like that.
Was in the mid 60's then, so the bike was probably early 60's model perhaps?
Nothing in recent memory, but they did work that way.
Elite HDF Member
Joined: Mar 2014
Posts: 4,214
Likes: 661
From: Prior Lake, MN
There are several methods to come up with an octane number:
Research Octane Number (RON)
The most common type of octane rating worldwide is the Research Octane Number (RON). RON is determined by running the fuel in a test engine with a variable compression ratio under controlled conditions, and comparing the results with those for mixtures of iso-octane and n-heptane.
Motor Octane Number (MON)
Another type of octane rating, called Motor Octane Number (MON), is determined at 900 rpm engine speed instead of the 600 rpm for RON.[1] MON testing uses a similar test engine to that used in RON testing, but with a preheated fuel mixture, higher engine speed, and variable ignition timing to further stress the fuel's knock resistance. Depending on the composition of the fuel, the MON of a modern pump gasoline will be about 8 to 12 octane lower than the RON, but there is no direct link between RON and MON. Pump gasoline specifications typically require both a minimum RON and a minimum MON
Anti-Knock Index (AKI) or (R+M)/2
In most countries, including Australia, New Zealand and all of those in Europe,[citation needed] the "headline" octane rating shown on the pump is the RON, but in Canada, the United States, Brazil, and some other countries, the headline number is the average of the RON and the MON, called the Anti-Knock Index (AKI), and often written on pumps as (R+M)/2). It may also sometimes be called the Posted Octane Number (PON).
Difference between RON, MON, and AKIEdit
Because of the 8 to 12 octane number difference between RON and MON noted above, the AKI shown in Canada and the United States is 4 to 6 octane numbers lower than elsewhere in the world for the same fuel. This difference between RON and MON is known as the fuel's Sensitivity,[4] and is not typically published for those countries that use the Anti-Knock Index labelling system.
Research Octane Number (RON)
The most common type of octane rating worldwide is the Research Octane Number (RON). RON is determined by running the fuel in a test engine with a variable compression ratio under controlled conditions, and comparing the results with those for mixtures of iso-octane and n-heptane.
Motor Octane Number (MON)
Another type of octane rating, called Motor Octane Number (MON), is determined at 900 rpm engine speed instead of the 600 rpm for RON.[1] MON testing uses a similar test engine to that used in RON testing, but with a preheated fuel mixture, higher engine speed, and variable ignition timing to further stress the fuel's knock resistance. Depending on the composition of the fuel, the MON of a modern pump gasoline will be about 8 to 12 octane lower than the RON, but there is no direct link between RON and MON. Pump gasoline specifications typically require both a minimum RON and a minimum MON
Anti-Knock Index (AKI) or (R+M)/2
In most countries, including Australia, New Zealand and all of those in Europe,[citation needed] the "headline" octane rating shown on the pump is the RON, but in Canada, the United States, Brazil, and some other countries, the headline number is the average of the RON and the MON, called the Anti-Knock Index (AKI), and often written on pumps as (R+M)/2). It may also sometimes be called the Posted Octane Number (PON).
Difference between RON, MON, and AKIEdit
Because of the 8 to 12 octane number difference between RON and MON noted above, the AKI shown in Canada and the United States is 4 to 6 octane numbers lower than elsewhere in the world for the same fuel. This difference between RON and MON is known as the fuel's Sensitivity,[4] and is not typically published for those countries that use the Anti-Knock Index labelling system.
Extreme HDF Member
Joined: Sep 2010
Posts: 14,744
Likes: 402
From: Phoenix '53, '88, '09 Big Twins
early Vtwins...
here's a pic of my '53 FLF.
This is an electronic ignition sensor conversion- normally points and condensor would be used- but it works the same.
the cable with solid wire core is connected to the left grip, and will rotate the housing around the rotor- this allows the spark timing to be adjusted
the position shown is fully retarded- so that when you start the bike it won;t shoot your knee into the bar end and give you a scar that looks like a little smile...and a limp
Last edited by mkguitar; May 19, 2015 at 08:21 PM.
Road Warrior
Joined: Nov 2014
Posts: 1,962
Likes: 140
From: NY
100% CORRECT & RIGHT ON TARGET!
scott
Club Member
Joined: Apr 2013
Posts: 7,681
Likes: 8,413
From: Utah
well you should have been at the motorcycle shop, not the corral.
early Vtwins...
here's a pic of my '53 FLF.
This is an electronic ignition sensor conversion- normally points and condensor would be used- but it works the same.
the cable with solid wire core is connected to the left grip, and will rotate the housing around the rotor- this allows the spark timing to be adjusted
the position shown is fully retarded- so that when you start the bike it won;t shoot your knee into the bar end and give you a scar that looks like a little smile...and a limp
early Vtwins...
here's a pic of my '53 FLF.
This is an electronic ignition sensor conversion- normally points and condensor would be used- but it works the same.
the cable with solid wire core is connected to the left grip, and will rotate the housing around the rotor- this allows the spark timing to be adjusted
the position shown is fully retarded- so that when you start the bike it won;t shoot your knee into the bar end and give you a scar that looks like a little smile...and a limp
Seasoned HDF Member
Joined: Jun 2012
Posts: 6,154
Likes: 2,561
From: CT/FL
100% CORRECT & RIGHT ON TARGET!
scott
BOSUXFan, do you have an export bike or did you bring yours with you? they may have tuned the HDI bikes differently. I hate to say it, but what does your owners manual say?
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