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My quest to make motorcycle riding that tad bit safer

gill.net.in

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Re: My quest to make motorcycle riding that tad bit safer

#51

Post by Reason077 »

krisoft wrote: post #34
imglorp wrote: post #19

Earlier quoted context omitted.

EV's with regen braking and manual transmission vehicles are in the same boat: unless they light up when slowing, following drivers will be surprised. The bare standard IMO for all vehicles should not be to light up when brakes are applied but instead any time the vehicle begins decelerating. Adding flashing for a strong stop ~~ >0.75g would be a bonus. Given all the sensors and compute hardware on vehicles -- even b…

> Adding flashing for a strong stop ~~ >0.75g would be a bonus. Is that a good idea? A flashing brake light could appear as if the brake was let go, which is the exact opposite of the message you would want to send in that case. Or maybe we are talking about flashing between two different illuminated states?

It’s a common (mandatory?) feature in Europe. Brake lights flash under very hard / emergency brake conditions. The flashing is very rapid, definitely gets your attention, and couldn’t be confused for “letting go” of the brake.

Re: My quest to make motorcycle riding that tad bit safer

#52

Post by sidewndr46 »

sgt wrote: post #36
cj wrote: post #25

Earlier quoted context omitted.

What is the general consensus on ABS braking in motorcycles? Really curious to hear from anyone who has rode a bike equipped with it. For some reason the idea of a bike interfering with brake controls seems like it could feel unsafe if the system isn't designed really well. Extremely low margin for error when it comes to braking on a 2 wheel vehicle especially in suboptimal conditions. I could see ABS braking being f…

Most, if not all, modern motorcycles already come with ABS braking. For many motorcycles it's also adjustable, for example switching off ABS in the rear while retaining it in the front, for those riding offroad and dirt. Many bikes also come with cornering ABS, meaning that if the motorcycle is at an angle, the ABS comes in gradually. Overall ABS is pretty much a "solved" problem right now, on motorcycles 2012+ at th…

If you're in Australia where it is mandated, sure. In most of the world, no motorcycles have ABS

Re: My quest to make motorcycle riding that tad bit safer

#53

Post by sidewndr46 »

cj wrote: post #25
HPsquared wrote: post #20

Earlier quoted context omitted.

You'd only see it on newer bikes with ABS, they seem likely to have more sensors and "electronics" in the brake system. In that kind of system the deceleration could be inferred from existing speed signals. I wouldn't be surprised if ABS systems already estimate the engine braking torque directly.

What is the general consensus on ABS braking in motorcycles? Really curious to hear from anyone who has rode a bike equipped with it. For some reason the idea of a bike interfering with brake controls seems like it could feel unsafe if the system isn't designed really well. Extremely low margin for error when it comes to braking on a 2 wheel vehicle especially in suboptimal conditions. I could see ABS braking being f…

ABS on a motorcycle is pretty great on the roadways. The issue I've heard from people is that it can't be disabled off road on many motorcycles. Most owners just unplugged the sensors entirely as a result, causing the system to indicate failure.

Re: My quest to make motorcycle riding that tad bit safer

#54

Post by tstrimple »

HPsquared wrote: post #28
cj wrote: post #25

Earlier quoted context omitted.

What is the general consensus on ABS braking in motorcycles? Really curious to hear from anyone who has rode a bike equipped with it. For some reason the idea of a bike interfering with brake controls seems like it could feel unsafe if the system isn't designed really well. Extremely low margin for error when it comes to braking on a 2 wheel vehicle especially in suboptimal conditions. I could see ABS braking being f…

Front brake is where it's most beneficial as the front wheel is what keeps the bike upright. If you lock the front wheel, especially in a turn, the bike falls over almost instantly. edit: Rear wheel locking gives a bit more time to react. Personally the main safety benefit is for emergency braking in wet conditions. ABS also allows to use full brakes in the wet without worrying so much about falling over. That's the…

> ABS also allows to use full brakes in the wet without worrying so much about falling over. That's the real benefit, real-world it shortens your stopping distance because of that increased confidence in using the brake.

I think this point is worth emphasizing. You'll hear from a lot of folks on motorcycle forums that ABS will increase stopping distance. Which is true for great drivers performing threshold braking. How many motorcycle riders actually practice front braking on their non ABS bike until they lock up the front wheel to really learn the limits of themselves and their bike? For most people, you'll be able to use more brakes and stop in a shorter distance in more conditions with ABS while maintaining control of the vehicle.

Re: My quest to make motorcycle riding that tad bit safer

#56

Post by foobarian »

bell-cot wrote: post #37
cosmicgadget wrote: post #21

Earlier quoted context omitted.

I guess those situations where you are engine braking and a non-tailgating driver doesn't realize he's closing to an unsafe distance. Then one of a couple of things could cause a collision from this preventably-dangerous situation. Def not a daily event but not unheard of.

If you drive a manual in a hilly area, or a city with poorly-coordinated traffic lights, it can be an extremely frequent event. Not that trying to shed tailgaters or trigger-happy brake lights are foolproof. A couple decades ago, my car was totaled by a rear-end collision. I was stopped and stuck in the traffic at a red light. The at-fault driver popped over a little hill with her nose stuck in a map - failing to not…

Tbh I find my manual gearbox car not able to slow very hard at all with engine braking. However it's admittedly not a Diesel engine.

Re: My quest to make motorcycle riding that tad bit safer

#57

Post by martin_a »

imglorp wrote: post #19
Workaccount2 wrote: post #13

The author did a great job actually building the project, doing a layout and custom design rather than just stitching together off the shelf modules. Good work. That being said, in 20 years of riding motorcycles and being an ATGATT (all the gear, all the time) kind of rider, I'm mixed on the need for this. It's something I have thought about doing with a direct hardwire to the throttle, but I can't come up with a sit…

EV's with regen braking and manual transmission vehicles are in the same boat: unless they light up when slowing, following drivers will be surprised. The bare standard IMO for all vehicles should not be to light up when brakes are applied but instead any time the vehicle begins decelerating. Adding flashing for a strong stop ~~ >0.75g would be a bonus. Given all the sensors and compute hardware on vehicles -- even b…

Regarding EVs: That's already implemented that way. Once EVs start braking more than "expected from roll resistance" the braking lights come on.

I think there were also bugs on some Hyundais where they wouldn't stop or start or whatever, but I think that was sorted. With my Skoda I can see the braking lights go on when I change a higher regeneration step.

Re: My quest to make motorcycle riding that tad bit safer

#58

Post by K0balt »

0_____0 wrote: post #32
mygnu wrote: post #14

Earlier quoted context omitted.

I am considering adding a watchdog logic in the microcontroller that holds a mosfet gate, if there is any signs of failure in logic it would pass through the normal light signal.

I have a second concern re: posi-tap as a connection method. Personally, I would not use a insulation displacement connector like that in a high-vibration environment, at least not without many many hours of accelerated lifetime testing under high vibration load. It's possible they're fine, but at the end of the day you're driving a couple of knives partway through a wire in a way that's non-inspectable. For field in…

Genie soldering is not preferred for high vibration environments. Crimping is considered more reliable. Proper strain relief and anti corrosion treatment is key.

Re: My quest to make motorcycle riding that tad bit safer

#59

Post by whalesalad »

I actually think it is lame when engine braking activates the brake light. There are two distinct behaviors: slowing down gently, with engine braking, and slowing down intensely with physical brake application. When I am engine braking like going down a long hill I do not want to flag the drivers behind me that I am braking ... I just want to use the compression of the engine to regulate my speed. Anyone who lives in a mountainous area will tell you this. Seeing solid brake lights going down the hill is a red flag / skill issue. Some manufacturers have begun to add artificial brake lights during engine braking though and I find it disingenuous.

Re: My quest to make motorcycle riding that tad bit safer

#60

Post by Reason077 »

sidewndr46 wrote: post #52
sgt wrote: post #36

Earlier quoted context omitted.

Most, if not all, modern motorcycles already come with ABS braking. For many motorcycles it's also adjustable, for example switching off ABS in the rear while retaining it in the front, for those riding offroad and dirt. Many bikes also come with cornering ABS, meaning that if the motorcycle is at an angle, the ABS comes in gradually. Overall ABS is pretty much a "solved" problem right now, on motorcycles 2012+ at th…

If you're in Australia where it is mandated, sure. In most of the world, no motorcycles have ABS

It is mandatory in many countries, not just Australia. Europe, Japan, Brazil, etc, all require ABS on new motorcyles.
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