Best engine RPM for fuel mileage?

[Bootie]

Best RPM

sorry, but you are incorrect... as was i... i was 500 rpm's too high in my statement...
think about what you said... 6000 rpm's @ 50 vs. 6000 @ 70... irregardless of wind resistance, it's a physical impossibility to turn the same rpm @ differing speeds (useless you are talking using a higher/lower gear)... look at it as 'gears' turning on each other... you can not spin one faster than the other... it's physics... wind resistance is a factor in the amount of energy, ie; fuel, used to over-come that force, but the rpm's required to propel your vehicle to a particular speed is a 'given'... all based on which gear you are in at that speed...

You are absolutely correct but I agree with Scotty:agree: I'm rather certain that he understood that you must change gears to get differing speeds with the same RPM. Wind resistance (drag) makes just about all the difference since drag increases with the square of velocity. 50mph is much more efficient than 70mph no matter the RPM. Also, irregardless is not a real word. You have two negatives (ir + regardless) which would give you the opposite of regardless (what ever that is):roflblack:

 

[Bob Denman]

A more salient point might be to simply slow down if you want to use less fuel...

 

[boborgera]

A more salient point might be to simply slow down if you want to use less fuel...

Na, Old Wives tail,
Some times you have to drive Fast, So you can get home before you run out of Gas. :roflblack:

 

[Bob Denman]

You can coast farther if you have a better run at it; right? :thumbup:

 

[boborgera]

You can coast farther if you have a better run at it; right? :thumbup:

Absolutely, The last time i ran out of gas i coasted about a mile to my driveway.:thumbup:

Truth in advertising;; It was down hill, But the driveway was uphill.

 

[budsspuds]

I get 30 mpg plus or minus 1 mpg no matter the RPM's , it is all good better than the 15-17 mpg I get with the truck :sour:

 

[Bob Denman]

I agree with that! :firstplace:
With the proper perspective; anything can be made to seem more reasonable! :thumbup:

 

[Ride Master]

You can coast farther if you have a better run at it; right? :thumbup:

Yeah, but what engine rpm?

 

[boborgera]

Yeah, but what engine rpm?

Zero, Clutch pulled in and or in Neutral.
Run out of gas and leave it in gear, Maybe you'll go 15 feet.

 

[NancysToy]

sorry, but you are incorrect... as was i... i was 500 rpm's too high in my statement...
think about what you said... 6000 rpm's @ 50 vs. 6000 @ 70... irregardless of wind resistance, it's a physical impossibility to turn the same rpm @ differing speeds (useless you are talking using a higher/lower gear)... look at it as 'gears' turning on each other... you can not spin one faster than the other... it's physics... wind resistance is a factor in the amount of energy, ie; fuel, used to over-come that force, but the rpm's required to propel your vehicle to a particular speed is a 'given'... all based on which gear you are in at that speed...

Naturally I assumed that you would understand that you have to change gears to go the same speed at different rpm. I guess I have to explain in more detail. If you didn't expect to change gears, why did you ask the question? The question without changing gears would have been "What is the best speed for fuel mileage?"

 

[Bob Denman]

...and THAT quest might want to start at the lowest speed that will support getting the clutches fully-engaged in top gear??? :dontknow:

 

[Motogordo]

The best RPM for fuel economy is 0

I apologise, I know it is a serious and interesting question, but I couldn't resist.

10/12/12

It is spelled apologize........ :yes:

 

[Motogordo]

10/12/12

It is spelled apologize........ :yes:

I found that when I had my 2011 RTS/SE5, I would change gears around 3100 rpms and back off the throttle each time. It was smooth as silk and I was averaging 35 mpg with premium gas.

Motogordo

 

[Arr MiHardies]

I found that when I had my 2011 RTS/SE5, I would change gears around 3100 rpms and back off the throttle each time. It was smooth as silk and I was averaging 35 mpg with premium gas.

Motogordo

That would be lugging the engine if you are keeping it under 3100... The Spyder is happiest around 5000

 

[effgjamis]

I have overcome the Wind issue. :yikes: when bucking the wind I turn on my back seat mounted attic fan, and when going with the wind I run the fan in reverse...


and if you believe the above I have another fix.:roflblack:

 

[Tin Man]

I like to run my spyder in the 5000 rpm range. Seems to give me the best fuel milage in this range and performance feels the best in this range.

 

[Bob Denman]

Cast my vote for the 4000 rpm range... :thumbup:

 

[napper39]

my way, after you hit second,dont shift tell your above 4000 rpm,and dont ride over 70 mph at any time,then you will get the best mpg,and use 93 octane gas,:chat:

 

[Knarfoh]

Average Rider Here

Posts like this are sprinkled throughout... To be honest, I gave up trying to follow all the tips.... I figure I will get the mileage I get based upon how my 2012 RT-S SM5 is designed. I am not interested in particularly driving slower then I normally would, but I am not a speed demon by nature.

The only tip I try to follow is when to shift, not for gas mileage, but shifting at speeds/rpm that makes for the most smooth transition between gears. Very rarely do I get above 4th gear in the city.

Chart of my gas mileage below. Click for image.

http://www.knarfoh.com/images/spyder_mileage.png

 

[Bob Denman]

If fuel economy is the big issue; why not ride some little scooter no-ped that gets about a jillion miles to the gallon... :roflblack: