Visionary
Posts: 2118
Pitt Meadows, BC Canada | Well, not quite 'Nuff'. Since my first 750cc Virago in 1979 - no HD has EVER beaten me in a drag. Latest being this summer when 2 old friends who had both spent over $10,000 on engine mods on their HD's - neither could beat me in a Roll On - or 1st -to- 4th Drag. (with Co-Pilot on board - and them riding solo). I'm not saying my bike is faster.... I'm saying I'M faster. At age 67.
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Visionary
Posts: 1632
Jasper, MO | TRELL - 2011-10-26 4:18 PM
Will a stock vision out run on short or long runs The gl1800 wing,The harley classic,The bmw,The other bike are stock too. I have a GL1800 and a 2000 harley std. The wing i think maybe faster, the harley noway..What you say?
You asked about 100% stock bikes.
In a standing start drag race, the GW will beat the Vision by about 1/4 to 1/2 second, if the riders are of equal weight and ability. This is due to the lower gearing in first gear on the GW and its ability to rev higher than the Vision. Torque output of the two bikes is actually pretty close. The GW feels a lot quicker than the Vision in first gear because of the gearing differences. The GW has the advantage in 1st gear. The Vision has a slight advantage in 5th gear.
In a 5th gear roll-on contest from 40 to 100, it will be very close. The winner will be determined by the total weight of the respective bikes and riders. The Vision is electronically limited to 122 MPH. The GW is limited to 129. Unless you have a good tailwind and a downhill run, you won't see much over 125 on a GW (GPS verified. GW speedometers are typically about 4% optimistic, and will indicate 130+).
If you extend the roll-on contest between the GW from 40 to 120, the GW will start pulling ahead a little after about 105-110.
For all practical purposes, such as passing slow traffic on a two lane road, the GW and Vision are about equal in 5th gear.
It's easy, and not very expensive, to get GW beating performance out of the Vision. The GW typically has about 95 to 100 HP and 100 to 105 Torque at the rear wheel. The 100% stock Vision is typically around 85 to 90 HP and 100 to 105 Torque at the rear wheel. The stock ECU (and rev limiter, and cams) on the Vision hurts the HP. The power starts to drop off after about 4500 RPM. I don't know, or understand , why. Maybe to keep the EPA happy? There is a lot more potential in these motors. You can get 110 HP and 110 Torque at the wheel on a Vision without much effort or expense. Cams, intake plate, and a fuel controller are all that's needed to reach this level. Add Lloydz reprogrammed ECU to the mix, and you'll be at 115/115, and there isn't a stock Goldwing that will touch you in a drag race, in a roll-on contest, or on top end speed. Exhaust changes are optional and not needed to get this level of performance. With these upgrades, low end torque stays the same, or improves. The power just keeps building all the way to 5900-6000 RPM, instead of dropping off after 4500 RPM. There is no downside. It's how they should have come from the factory.
The power curve of the stock GW starts to drop off after 5500 RPM.
Both stock bikes are faster/quicker than stock Harleys.
Which BMW are you asking about? The K1200s run about equal to the GW. The K1600s are faster.
Ronnie
Edited by rdbudd 2011-10-30 8:49 PM
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preformance not bashing
