shows in 1st gear but in second
Road Master
Joined: Apr 2017
Posts: 858
Likes: 286
From: nw Ark
for you numbers guys, I am not sure you are dividing by zero or not. but the answer is either zero or infinity
depending on which number is the numerator or denominator. does not matter. display should be blank or zero.
ratio of wheel speed to engine speed is the whole algorithm. just arithmetic.
I have no inside information on this subject, just read it in the owners manual.
Numbers are our friend. Now stop thinking and ride.
depending on which number is the numerator or denominator. does not matter. display should be blank or zero.
ratio of wheel speed to engine speed is the whole algorithm. just arithmetic.
I have no inside information on this subject, just read it in the owners manual.
Numbers are our friend. Now stop thinking and ride.
Grand HDF Member
Joined: May 2008
Posts: 4,585
Likes: 673
From: Rolla
the gear indicator does not look into the gearbox and see what gear is engaged.
Only two numbers determine what is displayed. engine rpm and wheel speed.
think like a computer, not a mechanical device.
when you come to a stop, you are dividing by zero and the answer is meaningless. perhaps zero should be displayed.
when you pull in the clutch lever, you are destroying the logic behind the calculation. engine rpm now is meaningless for this application.
if you want to fiddle with starting a and stopping in high gears, slipping the clutch, yeah, you can confuse the calculations but get a life.
in gear, moving, hands off the clutch lever, stock gearing, it works as designed.
Only two numbers determine what is displayed. engine rpm and wheel speed.
think like a computer, not a mechanical device.
when you come to a stop, you are dividing by zero and the answer is meaningless. perhaps zero should be displayed.
when you pull in the clutch lever, you are destroying the logic behind the calculation. engine rpm now is meaningless for this application.
if you want to fiddle with starting a and stopping in high gears, slipping the clutch, yeah, you can confuse the calculations but get a life.
in gear, moving, hands off the clutch lever, stock gearing, it works as designed.
Very good explanation, and exactly how it works.
Clutch lever either all the way pulled in, or all the way out. Anything else, and you can get unpredictable results on the gear display.
This is also why even with the clutch lever all the way out, a slipping clutch can show the same results.
Seasoned HDF Member
Joined: Jan 2005
Posts: 5,856
Likes: 2,503
From: Lake Orion, MI
kickstatfan -thanks for sharing.
So, if I put my bike in first gear, run the rpms up and continue in first gear to say 45mps, are you saying the gear indicator would show something like 3rd gear (even though I am actually in first?
Our son has a Suzuki Blvd Boss. Your start in first gear. Pull off and when the engine whines go to second. Keep going and you would think that 3rd gear would come soon. However, that bike is a little different. At 45 mph, you'd better still be in 3rd gear - otherwise it lugs. 4th gear takes you up to somewhere around 60 or so.
I hear what you are saying - but, since I don't seem to have the issue that the OP has, I am not tinkering to find out.
So, if I put my bike in first gear, run the rpms up and continue in first gear to say 45mps, are you saying the gear indicator would show something like 3rd gear (even though I am actually in first?
Our son has a Suzuki Blvd Boss. Your start in first gear. Pull off and when the engine whines go to second. Keep going and you would think that 3rd gear would come soon. However, that bike is a little different. At 45 mph, you'd better still be in 3rd gear - otherwise it lugs. 4th gear takes you up to somewhere around 60 or so.
I hear what you are saying - but, since I don't seem to have the issue that the OP has, I am not tinkering to find out.
Grand HDF Member
Joined: May 2008
Posts: 4,585
Likes: 673
From: Rolla
For any given engine RPM vs wheel speed, there a very predictable speed that ratio will produce. A computer can do this instantly, and displays the calculated gear based the math it sees.
What kickstartfan explained, is that if you "slip" the clutch any (lever not all the way in or all the way out), you are messing those calculations up, and may not get accurate results.
Road Master
Joined: Apr 2017
Posts: 858
Likes: 286
From: nw Ark
as long you keep your hand off the clutch lever, the gear indicator will read 1st gear from idle to red line. \
I keep saying clutch lever not pulled in because "clutch engaged" or "clutch not engaged" can be misunderstood.
Last edited by kickstartfan; Aug 19, 2018 at 10:20 AM.
Road Master
Joined: Apr 2017
Posts: 858
Likes: 286
From: nw Ark
my point here is there is no fix to be had.
a mechanical device that looked into the gearbox and checked which gear is engaged would not be as confusing.
this is the 21st century and we done gone digital. get used to it.
a mechanical device that looked into the gearbox and checked which gear is engaged would not be as confusing.
this is the 21st century and we done gone digital. get used to it.
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