Bad Fuel Mileage!!!!!???

[170plus]

im not really positive on the cruise rpm drop with the y-p-y spring ,never checked it to tell you the truth ,im gonna ride a little tomorrow and i'll check it at a few different speeds to see what the rpms are running,i have tried a lot of different setting with the stock components and stock is hard to beat,im not studded,dont care about hole shots,have found most guys with studs only pull me a little bit from 0-20mph,after that they are extra weight(nice for icy conditions )costing you topend speed,i dont like to wind the secondary more than 60 for trails,90% of the time your wasting rpms,the four stroke is kinda like a big block chevy,likes to be short shifted,wants to use the torque and transition into the hp,pull 9500-9800 out of the hole and shifts out to 10500 on top,belts last longer,better gas mileage, and your not really getting out performed by all the aftermarket stuff

 

[Tork]

Thanks 170 plus, I appreciate that.

I may try the same combo as I think it could up the MPG by 2

 

[trenchdigger3]

yes I agree ,I had a proline clutch kit last year and it was a little faster but I prefer the stock set up for trail riding,which is what I do 99% of the time ,I sold the clutckit and put the cash towards a set of pilots (now there is money well spent),I have gotten much more enjoyment out of the skis then I did the clutch kit ,and the stock clutchig is easier on fuel,I do like the sound of that y-p-y pri.spring you are using 170 plus ,I think I will give one of those a try.

 

[Bigwin]

Tell you another reason, Do you have Duelly's or recentley put them on ,, if you have there is about 2 to an honest 3miles per gallon, "proven" also think what that does to your MPH... Bill

Spent Monday night riding with a couple buddies, and did some fairly hard ditch banging, and after my ODO said 70 miles my low fuel light came on! I am going to check my fuel lines since I recently had the tank out, but I'm 99% sure theres no leak. I pulled the sled back in my garage, let it sit inside with the garage cloased up and there was no smell of fuel, and I could find nothing dripping even when running.
Could the clutch kit, pipes, added +10 on the ECU, and airbox mod kill my mileage that bad? I'm used to at least getting somewhere in the neighborhood of 130 - 140 miles from a tank, at least! I couldn't believe that those mods would suck down twice as much gas, so I had to ask!
We were riding fairly agressively for night riding, and I was on and off the throttle alot, but not much more than usual.
Nate

 

[4Fighter]

Question:

Should it take more fuel to make more HP?

998 cc's carbed = 138-140 HP

vs.

998 cc's FI 148 - 150 HP.

Just wondering.

 

[Wartsnuff]

Well i am not sure,

but my 07 rtx was a piggy on the fuel.

almost use's the same amout as my 02 viper

within a couple dollars of each fill...

the machine certinly does not get gas milage my 600sdi poo, or vector... the phaser must be amazing on fuel.

but i am more about arm ripping pull then fuel milage!

cheers

 

[170plus]

no dually runners for me ,i still ahve 1/2 of the stock carbides and thats good enough,less drag,i tried my rpm today at different speeds and here is what i had :
60mph @ 7000rpm
70mph @ 7600rpm
80mph @ 8000rpm
now this was on some descent trails and its about -2deg f if that makes a difference,this was with the y-p-y front spring and secondary wound at 60,the guys with the clutch kits can compare numbers to see what they are turning

 

[Tork]

Your a good guy 170plus, thanks.

Although conditions and up/down slopes have an effect on load thus RPM, Id say you are running at least 500 cruise RPMs lower than me. I am going to get that spring on order!

 

[nate007]

Yep Bigwin, Just put a new set of Dooley"s on just before riding this season. Any body else heard of this? Do you think a different set of skis or carbides would be better?
Nate