1500W E-Bike. You’re nicked.
Discussion
yonex said:
The Bosch motors are easily unlocked. I’d love to try one. I’ve been told they are good for 20-25mph and would hold up for 60-90mins without the assist restrictions. Obviously, that’s breaking the law, which is very bad indeed so don’t anyone do that.
They also log the current discharge. So when, not if the cells go down you’re on your own.
I hear from a friend who has one, the Bosch motors are no longer so easy to / possible to unlock. Bosch are making a big thing about stopping tuning right now: https://www.bosch-ebike.com/en/service/ebike-tunin...They also log the current discharge. So when, not if the cells go down you’re on your own.
Solocle said:
skwdenyer said:
10 degrees is hardly a mountain 
17.6% gradient. Hardknott Pass is a "mere" 18 degrees.
The point is this: right now motor power is being used as a proxy for other things, and is scuppering the great advantage of ebikes. If you want limits (which I don't, but I understand the argument in favour of them) by all means limit top speed (20 mph seems reasonable to me) and acceleration if you like. But limiting power merely limits utility for no possible benefit.
skwdenyer said:
A mere 18 degrees that I have indeed cycled over in my youth.
The point is this: right now motor power is being used as a proxy for other things, and is scuppering the great advantage of ebikes. If you want limits (which I don't, but I understand the argument in favour of them) by all means limit top speed (20 mph seems reasonable to me) and acceleration if you like. But limiting power merely limits utility for no possible benefit.
Yeah, 20 mph seems reasonable, and acceleration is the big issue I'd consider. Would be interesting to see how that's implemented, though, as I expect it would be fairly easy to trick a speed limiter, and acceleration necessarily is tied to wheel speed (otherwise, gradient is indistinguishable).The point is this: right now motor power is being used as a proxy for other things, and is scuppering the great advantage of ebikes. If you want limits (which I don't, but I understand the argument in favour of them) by all means limit top speed (20 mph seems reasonable to me) and acceleration if you like. But limiting power merely limits utility for no possible benefit.
Solocle said:
skwdenyer said:
A mere 18 degrees that I have indeed cycled over in my youth.
The point is this: right now motor power is being used as a proxy for other things, and is scuppering the great advantage of ebikes. If you want limits (which I don't, but I understand the argument in favour of them) by all means limit top speed (20 mph seems reasonable to me) and acceleration if you like. But limiting power merely limits utility for no possible benefit.
Yeah, 20 mph seems reasonable, and acceleration is the big issue I'd consider. Would be interesting to see how that's implemented, though, as I expect it would be fairly easy to trick a speed limiter, and acceleration necessarily is tied to wheel speed (otherwise, gradient is indistinguishable).The point is this: right now motor power is being used as a proxy for other things, and is scuppering the great advantage of ebikes. If you want limits (which I don't, but I understand the argument in favour of them) by all means limit top speed (20 mph seems reasonable to me) and acceleration if you like. But limiting power merely limits utility for no possible benefit.
skwdenyer said:
I hear from a friend who has one, the Bosch motors are no longer so easy to / possible to unlock. Bosch are making a big thing about stopping tuning right now: https://www.bosch-ebike.com/en/service/ebike-tunin...
Ah, it's just software. It'll be easy enough.skwdenyer said:
The Bosch solution is to sell a mid-drive that has to be fitted into a frame. A frame only supports a certain size of wheel. So it is fairly easy to set a maximum speed.
One wonders what would happen if one installed a franken-cassette (put the small sprockets on at the back and the big ones at the front)Legacywr said:
On a pushbike, speed is your biggest danger!
15 mph, funnily enough, is a maximum speed that I came up with for myself a long time ago, after an accident I had.
Not saying I always stick to it...
Eh? 15 mph is the average speed I'm aiming for on the road, including climbing hills. Any slower and I'd be considering giving up cycling to be honest.15 mph, funnily enough, is a maximum speed that I came up with for myself a long time ago, after an accident I had.
Not saying I always stick to it...
I never cease to wonder at what goes through some PHers minds. If a car driver is "making progress" and "using all of his car's performance" to do so, he's a credit to petrolheads everywhere. But the moment a cyclist does the same (remembering that the driver and cyclist could well be the very same person
) he's a dangerous mentalist with a death wish. Makes no sense, especially when the absolute speeds involved and the potential for damage and destruction are skewed so heavily in favour of the car being the dangerous one. But then irrational dislikes are always going to be, well... irrational.
Legacywr said:
I’ll clarify, at 15mph, you and the bike are stopping for an emergency, much more than that, only the bike is stopping, you’re not though.
Try it?
I've tried it.Try it?
Luckily I have arms.
They act as a brace against the handlebars and prevent me from being catapulted skywards/ becoming a crumpled mess on the Queens Highway..
If you haven't got arms though you're stuffed.
Legacywr said:
On a pushbike, speed is your biggest danger!
15 mph, funnily enough, is a maximum speed that I came up with for myself a long time ago, after an accident I had.
Not saying I always stick to it...
I completely disagree. On my ride earlier, I used an urban dual carriageway (30 mph limit). I was maintaining 30 mph when possible, and, at one point, accelerated to 35, moved to L2, and overtook a lorry.15 mph, funnily enough, is a maximum speed that I came up with for myself a long time ago, after an accident I had.
Not saying I always stick to it...
Riding at 15 mph on such a busy road would have been more dangerous than doing 30. As it was, I was matching vehicular speeds, which gets you far more respect from motorists. It so happens that there is a cycle path which would accommodate 15 mph, but 30 mph on that would be silly. Some roads don't offer that choice.
Legacywr said:
I’ll clarify, at 15mph, you and the bike are stopping for an emergency, much more than that, only the bike is stopping, you’re not though.
Try it?
Please stick to buses or taxis . You clearly don't have the skill to operate any sort of vehicle if you can't cope with 15mph on a pushbike.Try it?
yonex said:
Legacywr said:
On a pushbike, speed is your biggest danger!
15 mph, funnily enough, is a maximum speed that I came up with for myself a long time ago, after an accident I had.
Not saying I always stick to it...
15mph. Most deaths are crush episodes, sub 5mph.15 mph, funnily enough, is a maximum speed that I came up with for myself a long time ago, after an accident I had.
Not saying I always stick to it...
Most injuries ( on the road ) occur at junctions.
Same as motor vehicles.
Red 4 said:
yonex said:
Legacywr said:
On a pushbike, speed is your biggest danger!
15 mph, funnily enough, is a maximum speed that I came up with for myself a long time ago, after an accident I had.
Not saying I always stick to it...
15mph. Most deaths are crush episodes, sub 5mph.15 mph, funnily enough, is a maximum speed that I came up with for myself a long time ago, after an accident I had.
Not saying I always stick to it...
Most injuries ( on the road ) occur at junctions.
Same as motor vehicles.
Legacywr said:
I’ll clarify, at 15mph, you and the bike are stopping for an emergency, much more than that, only the bike is stopping, you’re not though.
Try it?
Been doing it most of my life as part of mountain biking when a hazard suddenly appears. Often over 15mph as well.Try it?
It's all about weight distribution.
I have a Haibike sDuro Cross 6.0 with the Yamaha PW-SE motor. 70nm of torque and cadence support up to 110rpm.
Luckily my friend has the exact model but with a Badass box fitted. What a coincidence.
I would never want to open the motor up, so the Badass box is a better alternative, just fitting over the speed sensor and doubling the speed limit to around 32mph. Removable in seconds.
As a relatively fit cyclist the 15.5mph limit is annoying. In many circumstances I'm cutting in and out of assistance. If the limit was increased to around 22mph, it would be perfect.
With the Badass box fitted it's an absolute beast. Even though the PW-SE is meant to be the touring version (compared to the PW-X and Bosch Performance Line), it still eats 15% climbs.
Luckily my friend has the exact model but with a Badass box fitted. What a coincidence.
I would never want to open the motor up, so the Badass box is a better alternative, just fitting over the speed sensor and doubling the speed limit to around 32mph. Removable in seconds.
As a relatively fit cyclist the 15.5mph limit is annoying. In many circumstances I'm cutting in and out of assistance. If the limit was increased to around 22mph, it would be perfect.
With the Badass box fitted it's an absolute beast. Even though the PW-SE is meant to be the touring version (compared to the PW-X and Bosch Performance Line), it still eats 15% climbs.
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