40mpg

Not sure what I have going on. I have the valves alittle loose. Carbs are super clean. (float level slightly lower than spec) I put a throttle lock on it (cruise control) I used Middle Grade fuel from BP. I'm using synthic lube in the diff and middle gear. I pumped up the tires to what ever it said on the side wall. Otherwise its all stock. I'm going to check the plugs today to see how they look and I will get back to this thread with the results. My tach never went over 4500. it would cruise at 3800 at 55 Thanks for asking.

 

I must be a little heavy on the throttle.....

I cant seem to get more than 110 miles before I put 3 gallons in.......

 

Plugs look clean, maybe too clean. The insulators look white 3/4 way around and brown spot the last 1/4 way. I have stock jetting and my mixture screws are 3 turns out. Maybe the little o-rings are bad and its sucking air making it lean. Wonder if I should just put a little dab of silicone over each pilot screw and see if that changes the plugs. Thinking it might be too lean if the average is 38 MPG on your bike. Let me know what you think. I don't want to burn my pistons up being too lean.

 

The discription sounds like you are running lean. Can you post pics of them?

 

I was thinking this the other day.
The tires say 45psi on the side.
The Yahmmy owners manual says 28psi front and 32psi back.
I run the 28-32psi setup, maybe I should be running 45psi.
What are your thoughts here?

 

The psi stated on the sidewall is the max psi when carrying the maximum load the tires can handle. Stick to what the owners manual says.

 

I am going to further go off topic and question the owner's manual. I don't know about yours, but mine was written 25 years ago when bias ply tires was all the rage and I was barely getting out of diapers. Today we almost all use radial tires which don't have the sidewall stiffness of the old tires. So I am only going to question the owner's manual and leave it up to an "expert", but my guess is that it will be somewhere in between.

 

You should still be using bias ply tires, therefore you should be following the owners manual suggested psi rating.

 

I run what Yamaha recommends for the weight I am carrying.

 

You are lean if the insulator is white, should be a TAN color all the way around.

I would not say that about THIS harley.
http://www.harley-davidson.com/wcm/Cont ... cale=en_GB
Check her out.....a real bike from Harley, not just another fat, dumb, slow, non-fuelefficent, loud PITA, vibrating erotic massager of a "bike" :lol:

It has everything I have been asking of HD, minus the freakin rocket launcher. But I am sure that is avalible from the aftermarket in the middle east.....
OH btw it is ONLY avalible in Europe, Middle East, and Africa. How messed up is that.....
The markets ALREADY covered by european sportsbikes will now have a harley cafe racer. Why not usa, crotch rockets are just plain uncomfortable, and BIG LOUD V-Twins that shake like a badly broken washer and drier set and those two are the only options that are regularly avalible.

I say we storm the HD factory and confiscate several models for "testing."
Whos in?

*EDIT

 

I am runnign at 45 psi rear and 42 psi front. It rides alittle rougher but rolling resistance is real low compared to before when I had it at 36 front and 38 back. Also I'll take soem pics of the plugs and post tonight. Thanks

 

Sorry to go back to the Harleys but HD already came out with a café racer I think in the late seventies and everybody hated it, it didn’t fit in with the Harley riders and it didn’t fit in with the café racers. I was told you could buy them new in the crate for $1800 I saw one in decent shape and they were asking $14,000 (doesn’t mean they’ll get $14,000 for it :lol: ). That new one does look good though, maybe this generation is ready for a Harley café racer.

Back to the topic I don’t check mpg either and fun per gallon for me is not quantifiable.

 

Well said Dirk, it was a XR750 me thinks.
*edit

 

It was the XR750.
That was the Harley I wanted until I saw this one the other night.
vrscdx special

 

Sorry this is the hot ticket

http://www.starmotorcycles.com/star/pro ... image.aspx

 

this thread makes me a sad panda... i run out of gas at around 90 miles

 

Yikes, maybe the tower in the petcoc has somehow been clogged.

 

i go about 120 before i hit reserve, and depending on how i ride, i get between 40 and 49 mpg mixing up in town vs. freeway. i don't mind the stops, i'm pretty new to biking and i like to stretch out!