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[DonTom]

Sorry if I'm assuming your question incorrectly, but here's my take on it.

Regen without "brakes" are limited due to having too much braking force without a rear brake light being shown, increasing your chances of getting rear ended because drivers behind you don't realize you're braking. Once your brake light is triggered, the brake regen limit is increased and this is the extra regen you feel slowing you.

There is a very simple fix for that.

Teslas all show the brake light as they slow down, even if the brake pedal is NOT touched. Not only that, so does my helmet light--which has no connections to the bike. If you're going down a steep hill with a Tesla that seems to be braking a lot, the odds are the brake pedal was never even touched!

Same with the brake light on my helmet!


-Don-  Reno, NV

[caza]

Yeah there's really no reason why a modern bike shouldn't be showing the brake light during all deceleration instead of just when the brake lever is checked. The tech to do so is cheap and available.

Even without that, the controller should be able to activate the brake light if regen is activated.


This is the first I've been hearing about the SR/F having progressive regen. That's a huge bonus for me. The 100% on/off regen on the SR is a bummer compared to other EV's I've used with more nuanced control of regen. It's alittle jerky to switch from power to the wheels to 100% regen. Should be smooth like a proper squeeze of the front brake, but it isn't.

[stevenh]

Yeah there's really no reason why a modern bike shouldn't be showing the brake light during all deceleration instead of just when the brake lever is checked. The tech to do so is cheap and available.

Even without that, the controller should be able to activate the brake light if regen is activated.


This is the first I've been hearing about the SR/F having progressive regen. That's a huge bonus for me. The 100% on/off regen on the SR is a bummer compared to other EV's I've used with more nuanced control of regen. It's alittle jerky to switch from power to the wheels to 100% regen. Should be smooth like a proper squeeze of the front brake, but it isn't.

Just to be clear, it's progressive on throttle back-off from neutral, but not on the brake lever.  If you touch the brake, you still get 100% regen (kind of abrupt).  Also you can't set a lower brake regen than off throttle regen, so if you set off throttle to 100 to get progressive on the throttle, you are stuck with 100 on brake.

Steve

[gstrub]

I think I just need a simple explanation between what 0%, 50%, and 100% on both brake and neutral regen actually does. With the neutral regen set to zero I still feel the bike “braking” when I come off, although not as much as when set to 100%. I just want to know if it comes on at different throttle positions depending on the percent. And I want to know what the braking regen actually does, like when it comes on and force applied, depending on when the lever is depressed and how hard.

Also it would be nice to try and quantitate what I am getting back in terms of actual recharging but I know this is variable.

[stevenh]

I think I just need a simple explanation between what 0%, 50%, and 100% on both brake and neutral regen actually does. With the neutral regen set to zero I still feel the bike “braking” when I come off, although not as much as when set to 100%. I just want to know if it comes on at different throttle positions depending on the percent. And I want to know what the braking regen actually does, like when it comes on and force applied, depending on when the lever is depressed and how hard.

Also it would be nice to try and quantitate what I am getting back in terms of actual recharging but I know this is variable.

Based on my testing with my SR/F, brake regen is on or off, as soon as the brake light comes on.  The bike applies the requested % all at once as soon as any braking is detected.  As far as what 100% means, I don't know.  It does come on in steps based on throttle position when using off-throttle regen (not braking), not sure what the steps are, but it feels pretty smooth/good when riding (not too abrupt).  It seems they apply a minimum amount of regen if the value is set at zero, I've not worked to determine what that level is, but it feels like a bug to me.  My DSR really free-wheeled when set to zero, you can feel the difference on the SR/F (clearly some regen drag when set to zero).

Steve

[Richard230]

I think I just need a simple explanation between what 0%, 50%, and 100% on both brake and neutral regen actually does. With the neutral regen set to zero I still feel the bike “braking” when I come off, although not as much as when set to 100%. I just want to know if it comes on at different throttle positions depending on the percent. And I want to know what the braking regen actually does, like when it comes on and force applied, depending on when the lever is depressed and how hard.

Also it would be nice to try and quantitate what I am getting back in terms of actual recharging but I know this is variable.

Based on my testing with my SR/F, brake regen is on or off, as soon as the brake light comes on.  The bike applies the requested % all at once as soon as any braking is detected.  As far as what 100% means, I don't know.  It does come on in steps based on throttle position when using off-throttle regen (not braking), not sure what the steps are, but it feels pretty smooth/good when riding (not too abrupt).  It seems they apply a minimum amount of regen if the value is set at zero, I've not worked to determine what that level is, but it feels like a bug to me.  My DSR really free-wheeled when set to zero, you can feel the difference on the SR/F (clearly some regen drag when set to zero).

Steve

Years ago I read a magazine review of an earlier model of a Zero which claimed that the regen was set to produce 25% of the maximum power output of the motor. Which sounds about right to me.   

Right now I have my 2018S set at 0 regen with the throttle shut, so it will coast when not under power.  I note that there is enough drag from the power train to hold a steady speed down a 6% grade. If I was to turn on the regen, I would be turning the throttle on and off to stay at a steady downhill road speed of 40 mph on an expressway that I regularly ride (or in this case, coast) down.