rpm @ 55 mph

[mikexup]

Can anyone give me a approximate rpm their fj 1200 is turning at a indicated 55mph. Trying to figure out if mine has had a sprocket change, seems to be geared pretty low compared to other bikes I've ridden.

[1tinindian]

Start by telling us what year your FJ is.
Different years were geared differently.

We can go from there.

Leon

[fj11.5]

For instance, my 1200 has 17/39 sprockets, and effie the 1100 has 18/38, is yours still running standard gearing,  17Front / 40 41 42 rear,  , somewhere close to standard gearing is around 3,800/4,100 at 100 kmh

[mikexup]

Start by telling us what year your FJ is.
Different years were geared differently.

We can go from there.

Leon

The bike is a 1989.

[Pat Conlon]

How many teeth are on your back sprocket?

[HARTLESS]

ive got 17/40 on my 92 and im at about 3,500rpm at 55mph..roughly

[Pat Conlon]

Count the number of teeth on your back sprocket, look at the size of your back tire, assume you have a 17 tooth front counter sprocket, then go here and look up the appropriate table: http://www.fjowners.com/index.php?topic=669.0

It's all in the Files.

[markmartin]

The bike is a 1989.

Mine is an '89 with  18/38 sprockets.

55mph = 2900 rpm in 5th

55mph = 3600 rpm in 4th gear.

ive got 17/40 on my 92 and im at about 3,500rpm at 55mph..roughly

68mph = 3500 rpm in 5th.

All speeds are what is indicated on the speedo.

FYI

Mark M

[Firehawk068]

I just checked mine on the way home from work today.......

55mph indicated by the FJ speedometer in 5th gear= 3000rpms

55mph actual(according to GPS) in 5th gear = 3500rpms

I have a '90 with 180/55-17 rear tire, and 18/42 gearing.

[Flynt]

...what is indicated on the speedo.

Funny, the only one I can remember is 5,000 at 80mph on speedo...  

Frank

[Pat Conlon]

Frank, Frank, Frank, don't you ever go 55?

Like, when you have to slow down and go thru a school zone?

[FJmonkey]

Frank, Frank, Frank, don't you ever go 55?

Like, when you have to slow down and go thru a school zone?

Frank whent slow once, remember when he told us about the time he chopped the throttle on his new lightened crank engine....  Good thing he already had his kids...

[Pat Conlon]

Nope, Frank has the heavy crank....so to speak...

[Flynt]

Frank has the heavy crank...

  You say the nicest things Pat...

The other Flatside Frank (East coast version) has the lightened crank.  Mine is uncut thank you...   

Frank

[andyb]

6-8k @ 55.

All you other people are in the wrong gear.