Yazz
MOgang Member
You forgot to factor in "the wind resistance of a barn door," whose effect increase in conjunction with the velocity of said vehicle. :shemademe_smilie:
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top speed
- Thread starter lilwill
- Start date
You forgot to factor in "the wind resistance of a barn door," whose effect increase in conjunction with the velocity of said vehicle. :shemademe_smilie:
Bob Denman
New member
I was only referring to what might be possible... If the laws of physics suddenly quit working! :roflblack:
CMA/IBA_rider
New member
Was the mustang on a chevrolet rollback? It's not how fast you can go is how long you can stay in the saddle.
Wildrice
New member
OK Bob--run that calculation at 7500 rpm & bs me with the mph numbernojoke... 6500 rpm would be approx 128 mph & that's optimistic mph.
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Bob Denman
New member
You'd never see the 7500 limiter in action, if the bike is in gear...
But it would work out to a touch over 147 mph.
But it would work out to a touch over 147 mph.
jaherbst
New member
Bob Denman
New member
Docdoru ran about 129 at Bonneville: a World record for a liter-class bike. :firstplace:
...On a turbocharged GS!
...On a turbocharged GS!
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Yazz
MOgang Member
To DocDuru... :firstplace:
Bob Denman
New member
:shocked: Has anybody heard from his recently? :dontknow:
He hasn't been in here for over two years...
He hasn't been in here for over two years...
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Bootie
New member
F3 Top Speed
The theoretical top speed of any Spyder is easily calculated without endangering yourself or anyone else. Unless you have a slipping clutch the ratio of engine rpm to speed is fixed. So all you need to do is note the rpm at a lower speed, say, 60mph. If the rpm at that speed is 3500rpm then divide your red line (7500) by that number 7500/3500 = 2.143 then multiply your speed (60mph) by that number 2.143 x 60 = 128.57mph.
The other way to do this would be to note your speed (in mph) at 1/2 of the red line rpm (3750) and multiple that speed by 2.
These methods would give you the theoretical top speed. Whether you can attain that speed depends on many factors including wind, terrain, drag, etc...:lecturef_smilie:
The theoretical top speed of any Spyder is easily calculated without endangering yourself or anyone else. Unless you have a slipping clutch the ratio of engine rpm to speed is fixed. So all you need to do is note the rpm at a lower speed, say, 60mph. If the rpm at that speed is 3500rpm then divide your red line (7500) by that number 7500/3500 = 2.143 then multiply your speed (60mph) by that number 2.143 x 60 = 128.57mph.
The other way to do this would be to note your speed (in mph) at 1/2 of the red line rpm (3750) and multiple that speed by 2.
These methods would give you the theoretical top speed. Whether you can attain that speed depends on many factors including wind, terrain, drag, etc...:lecturef_smilie:
Wildrice
New member
Who actually care's!
Jack
Jack--My wife cares-- & she cares a lot--because she's riding along with me on the back seat---don't make me send my wife over to straighten you out Jack. She's not afraid of giving you a bust in your face--maybe twice--UR not so tough anymore--huh Jack
Waikiki June 2015--doing an Alaska cruise this 2016--Janet may need a new wardrobe..
Yazz
MOgang Member
Think he's into the GG Taurus now. Zoom zoom!
Bootie
New member
F3 Top Speed
Max Engine RPM is 7500
Rear Tire Diameter is 23 inches (+/- 1/4in)
Gear Speed(mph)
1st 45.38
2nd 59.47
3rd 73.56
4th 88.20
5th 104.48
6th 123.52
These are the maximum speeds attainable in each gear.
There is some measurement uncertainty in the diameter of the rear tire which will affect the speed numbers slightly.
This assumes you can get up to 7500rpm in 6th gear and you probably can't due to wind and drag.:lecturef_smilie:
Here are the Numbers Regarding Top Speed of the F3S. These are the theoretical numbers based on the gear ratios given in the service manual.
Max Engine RPM is 7500
Rear Tire Diameter is 23 inches (+/- 1/4in)
Gear Speed(mph)
1st 45.38
2nd 59.47
3rd 73.56
4th 88.20
5th 104.48
6th 123.52
These are the maximum speeds attainable in each gear.
There is some measurement uncertainty in the diameter of the rear tire which will affect the speed numbers slightly.
This assumes you can get up to 7500rpm in 6th gear and you probably can't due to wind and drag.:lecturef_smilie:
Bootie
New member
F3 Top Speed
If you are willing to push it over Red-Line to 8000rpm, these are the speeds you can achieve...
Gear Speed(mph)
1st 48.41
2nd 63.43
3rd 78.46
4th 94.07
5th 111.44
6th 131.75
Any faster and you are begging for trouble (Not from the Cops but from the PHYSICS/MECHANICS)
If you are willing to push it over Red-Line to 8000rpm, these are the speeds you can achieve...
Gear Speed(mph)
1st 48.41
2nd 63.43
3rd 78.46
4th 94.07
5th 111.44
6th 131.75
Any faster and you are begging for trouble (Not from the Cops but from the PHYSICS/MECHANICS)
Wildrice
New member
I have hit an honest 110 mph in 5th on the speedo somewhere in the upper 7000 rpm range---maybe 7700-7800---ran out of room & didn't have a gps to show accuracy. (thumb shift auto) Does the auto shift & manual shift have the same sprockets??
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Bob Denman
New member
Yes; they do! :thumbup:
IdahoMtnSpyder
Active member
I don't think Nanny will let you run it over red line. At least my 2013 RT would not. Keep in mind engine speed is controlled by the ECM. All the throttle does is tell the ECM how fast you want it to go, and it tells you yea or nay.
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