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Here's my basic circuit concept:
View attachment 107025
What is the brake light bulb type and how many are there on your bike?
Can you do some tests to see how long it takes your bike to slow down say 10 or 20MPH when you back off the throttle under the conditions (speed and gear) that you want the brake light to come on?
(Just don't kill yourself in the process).
That will allow the calculation of the negative G forces involved and thus how much signal to expect.
Some.Does this help?
I'm looking for the braking effect of the motorcycle engine, not hard braking from the brakes.FWIW: Nationwide https://www.nationwide.com/smartride.jsp considers hard braking > 7.7 mph/s, so that's somewhat of order of magnitude limit/linear range.
Yes. If you measure the time it takes to slow 10MPH, the average g force can be calculated.Is that the kind of information you need? The range of "g" of the deceleration?
Try to measure for a 10MPH drop in speed, if you can.Okay, I'll make some test runs this weekend and get the data.
I'll do it at mid-speeds (40 to 20 mph) since this replicates city traffic, where accidents are more likely.
Engine RPM really is not a factor as when accelerating I roll off throttle to up shift.
Yup!Surely everyone does?.
Likewise, you 'blip' the throttle as you change down (to equalise engine and gear box speeds, particularly important with non-syncromesh gearboxes, but should really be done in cars as well).
I use engine braking quite a bit. Why not? Saves wear on components. Having the brake come on when I use engine braking is a benefit, and it's not such a bother to the guy behind me (I think).Bikes want and need bright attention getting brake light systems but also you don't want a brake light for every time you moderately decelerate.
Ron
I use engine braking quite a bit. Why not?
May save wear on your brakes but it puts added stress on the engine, clutch, gears, and chains.I use engine braking quite a bit. Why not? Saves wear on components.