change my pinion

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change my pinion

Inläggav Jojo » 06 nov 2005, 12:15

yesterday i change my front pinion and the rear pinion wheel.
front now 16 teeth and rear 46 teeth ( front 1 less, rear 2 more),

Bild

and additionally i have install the speedohealer.
So i driven at the highway and the result was very good, more speed from the beginning.
I was tested the speedometer with my Garmin.
before change:
50 km/h at the speedometer = 42 by Garmin
100 = 89 by Garmin
200 = 189 by Garmin
highspeed 315km/h by speedometer = 278 by Garmin

now:
50 = 50
100 = 100
150 = 150
250 = 249

i think its very good.
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Jojo
 
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Blev medlem: 18 sep 2005, 21:32
Ort: Germany, Guntersblum

Inläggav Hasse » 13 nov 2005, 18:45

Thanks for the info. How much difference did it make on the RPM:s at a certain speed? For example at 100 Km/h what is the RPM?
Medlem i Superblackbird club of sweden
VFR 1200F '12
CB 125K5 '73
Monark M75 '50



"I've never seen a sight that didn't look better lookin' back"
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Hasse
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Inläggav Anders H » 14 nov 2005, 00:05

Hasse Johansson skrev:Thanks for the info. How much difference did it make on the RPM:s at a certain speed? For example at 100 Km/h what is the RPM?

Acording to the file (omdrev1.xls) you can download from our downloadingsite it should be about 300rpms moore, or am i wrong Jojo?

http://www.superblackbird.se/Download.html

Best regards Anders H
Anders H
Svart -07:a, Akra-system!
Svart BMW R75/6 lätt modifierad.
Medlem nummer #2
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Anders H
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Inläggav Hasse » 14 nov 2005, 11:40

Shuold have seen that one coming....... :D
Medlem i Superblackbird club of sweden
VFR 1200F '12
CB 125K5 '73
Monark M75 '50



"I've never seen a sight that didn't look better lookin' back"
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Hasse
Sekreterare
 
Inlägg: 6624
Blev medlem: 18 sep 2005, 19:22
Ort: Motala

Inläggav R1000 » 07 feb 2007, 02:15

Hasse skrev:Thanks for the info. How much difference did it make on the RPM:s at a certain speed? For example at 100 Km/h what is the RPM?


The difference will be 11% (17/16=6,25% plus 46/44=4,5%)

I guess that this could be quite fine since the Bird is low-reving stock. And 10% rear wheel torque on all gears will for sure be noticed by the arse dyno :-)
R1000
 


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