|Topic Review (Newest First)|
|12-22-2007 07:07 PM|
Originally Posted by johnrwilco View Post
This threads life should be terminated.
I'd rather talk about how many BMP I get at 100 MPH. (as in heatbeats)
The fact that you can not re-gear the Vulcan means that for any given rpm , EVERYONE should be going the same freaking speed. Do try and remember that the speedometer on your bike may read diffrent from someone elses, as no two gauges are the same to begin with, and stuff like tire size and tire pressure would effect the reading.
The tach itself is of course another gauge, so each of these could be a bit diffrent too. The bottom line here to me is , why does anyone need to read others figures on this, the only thing that matters is what your bike tells you, and one can point out that these are in effect just meaningless numbers anyway. Keep your engine running BELOW redline, and be aware that the speedometer may not be telling you your true speed, and go out , ride and have fun..............
|12-22-2007 04:53 PM|
|johnrwilco||Have followed this thread, so, took a ride today. 60mph @4200, touched 80mph @5700 as I recall. 100/90-19...150/90-15...dino...iridiums. How would a windscreen effect these numbers, I wonder?|
|12-20-2007 07:06 PM|
4200 rpm @ 62 mph
with stock rear tire about 4500 miles, and 110 front tire. avwraging rpm vs. speed from 30 to 70 mph. the multiplier is 67.5. to find my rpm for any speed multiply by speed . i realise it works out to way more than ican confirm, but it is true till 70 mph. some things i will never know.
|12-12-2007 02:28 AM|
Originally Posted by cegodsey View Post
|12-11-2007 10:25 PM|
|cegodsey||Ok. I see your point. When my clutch wears out, I will be replacing the springs as well. About how long before the clutch goes out?|
|12-11-2007 08:36 PM|
Originally Posted by cegodsey View Post
I found that my Vulcan had a problem with some clutch slipping, usually only when I was attempting high speed passing..(NOT a good thing) so I installed a Kevlar kit with stronger springs..problem solved. (I ran Rottella -non synthetic in it BTW)
The line about wind effecting the bike was a just a joke... as if the only way you would go faster is if you had a tail wind that clocked faster than you were going...(which would of course effect the engine speed also)
Just seems odd that this thread is so old and had so many replies.............
|12-11-2007 08:34 PM|
Straight up 3,000 rpm at 60 mph. (the extra 750cc helps!)
|12-11-2007 07:07 PM|
Knifemaker, that's what I thought too, until I went back to dino oil (to stop the coffee grinder). It makes sense IF the clutch is fully disengaged. The problem appears to be that in my bike, the synthetic I was using was allowing some slippage. Brand was probably either Castrol or Mobil, unknown what heat range.
and in reality, unless you've got tire slippage, wind and direction shouldn't change rpms vs speed.
This thread is so old that I was on it prior to leaving.
|12-11-2007 05:20 PM|
Holy crap, how old is this thread?
And who thinks diffrent oil effects the diffrence in engine speed to actual speed?...The only thing effecting this is wind speed and direction.
If the engine is turning 5000 rpms, it is turning everything else connected to it (the clutch-transmission/final drive) so depending what gear you are in, the bike will be going a specific speed (in mph or kph) not matter what oil you use.
Diffrent sized tires...and diffrent air pressures will of course change the reading of the speedometer, but a bike won't go slower or faster without the engine speed changing too. Oil type ...or fuel ... has nothing to do with it.
|12-11-2007 08:51 AM|
|Simon||For a stock bike 5000 revs is 75 mph. I didn't know about the 6th gear but I have noticed quite a few times that I've gone straight down into 4th, so maybe I've engaged it without realising. I guess its really only useful as an overdrive or something.|
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