108

[Rick G]

I returned from a short putt down old 66 , to the east. I spent part of the afternoon , trying to , improve my left front disc, and wanted to take a ride and see if it's any better.  I gave its head and it ran up to 108/110 , at 8000 rpm . That's on a slight up hill , with the bags on it.
It would be neat ,just once if I could get it to 9500 in 5th. Maybe on a  slight down hill some day.

[Walt_M.]

With my gearing and tires, 8K rpm is about 85mph.

[Rick G]

Walt , is yours a '82 or '83?

[Coil Coyle]

From the stock tire diameter and the Cycle World test these should be reasonably accurate way to verify the tach or speedometer of a Vision.

5295 RPM=60 MPH

1000 RPM=11.3314 MPH

8000 RPM=90.65 MPH

9000 RPM=101.98 MPH

9500 RPM=107.8 MPH

10000 RPM=113.31 MPH

$0.02
;)
Coil

[kwells]

11,500 = pick up pieces of motor on side of road

[Coil Coyle]

11,500 = pick up pieces of motor on side of road

Kwells,
           The motor stay together, but the valves hammer the piston tops!!
;D
Coil

[kwells]

gotta love valve float.  Some stronger springs could help out with that I suppose.  While we're at it..some lighter pistons and stronger connecting rods could get us up to 13,000.  what ya think?

[h2olawyer]

To heck with traditional valve springs, let's go pneumatic.  How do you think they get F1 V-8s to spin over 20K RPM?   8)

Actually, the rev limiter starts cutting the cylinder spark @ closer to 12K.  Pretty damn good, I'd say - for older technology.

H₂O

[Ron_McCoy]

Keep in mind that Rick has Euro gearing.

[Coil Coyle]

Keep in mind that Rick has Euro gearing.

One of you guys that have Euro gears need to do that arithmetic.
:)
Coil

[Rick G]

The tach will show 10,000 at the top of the the 3 lower gears and probably 4th too. When I installed the euro gears in '05 ,it never seemed to want to pull all the way to the top in 5th.I attributed that to elevation.
The speedo is a Canadian model  that I bought in '03, it has custom faces drawn on a computer program by Humber , a Visionary who doesn't come here any more, I have run

When I first bought it the stock exhaust was still on it and I was fascinated  with its ability t rev to 11,500 and survive , so I did it a little bit. When I installed the Macs it seemed to have more mid range, but stopped pulling at 10,000,. No more over reving for sport!
Just by seat of the pants , it was running over 100.
A friend in MN who had a R6 ,clocked me at 108 on the first one. No fairing , just tucked in. That was at 500 or 600 foot elevation.
It shows 6500 rpm at 80 mph,  and around 7100 at 90.
I've clocked it past KPD's radar display trailer, and at 50 mph indicated its spot on, haven't tried it any faster, for obvious reasons.