- Joined
- Mar 19, 2005
- Messages
- 696
Relating somewhat to the thread, "How fast is a Norton"....
Amazing to see some of the power and speed readings from some of you guys! I did drag mine once out the other side of Prag but I only got something over 12 in the quarter...interesting experience though.
Back when I got this bike and it was almost new...it used to scare the living daylights out of me....it was ungodly fast and the adreneline rush after midnight, fueled by a nice bowl ....of bringing it up through the gears between towns was worth getting out of bed for at two so the cops would stand less of a chance of catching me. It would do 105 in third gear...forth gear I rarely even bothered to shift into....shut it back down....I'd had my rush. Once was enough. Worked like magic every time, too. One run...and I could go back to sleep like a baby.
I remember back then, the speedo read 50 at 3000, 60 at 3,500, 70 at 4,000...etc. Every 500 rpms, it picked up 10 mph. You didn't really need a speedo to tell your ground speed.
My question.
Can the speedo or tach, change readings over the years? Mine has gradually begun to read 60 at over 4,000 and doing 70 will get it up towards 5000. The bike used to do 90 at 5000 rpms. The gearing hasn't been changed...still a 21 sprocket, still the same speedo gearbox. What's the story? Am I risking getting pulled over for speeding because the speedo reads too little...or...much to my disbelief, can a tacho start to read HIGHER over the years. Neither instrument has been opened, or played with. I know I can check ground speed by sweet-talking someone into driving thier car at a set speed and seeing what the bike is doing at the same speed and the tach can be checked by an electronic tach...but what interests me is if these changes are possible...if these instruments can really change readings over time. Or are my memories just a bit foggy? :lol: :lol: :lol:
Open to any ideas...thanks!
Amazing to see some of the power and speed readings from some of you guys! I did drag mine once out the other side of Prag but I only got something over 12 in the quarter...interesting experience though.
Back when I got this bike and it was almost new...it used to scare the living daylights out of me....it was ungodly fast and the adreneline rush after midnight, fueled by a nice bowl ....of bringing it up through the gears between towns was worth getting out of bed for at two so the cops would stand less of a chance of catching me. It would do 105 in third gear...forth gear I rarely even bothered to shift into....shut it back down....I'd had my rush. Once was enough. Worked like magic every time, too. One run...and I could go back to sleep like a baby.
I remember back then, the speedo read 50 at 3000, 60 at 3,500, 70 at 4,000...etc. Every 500 rpms, it picked up 10 mph. You didn't really need a speedo to tell your ground speed.
My question.
Can the speedo or tach, change readings over the years? Mine has gradually begun to read 60 at over 4,000 and doing 70 will get it up towards 5000. The bike used to do 90 at 5000 rpms. The gearing hasn't been changed...still a 21 sprocket, still the same speedo gearbox. What's the story? Am I risking getting pulled over for speeding because the speedo reads too little...or...much to my disbelief, can a tacho start to read HIGHER over the years. Neither instrument has been opened, or played with. I know I can check ground speed by sweet-talking someone into driving thier car at a set speed and seeing what the bike is doing at the same speed and the tach can be checked by an electronic tach...but what interests me is if these changes are possible...if these instruments can really change readings over time. Or are my memories just a bit foggy? :lol: :lol: :lol:
Open to any ideas...thanks!