Why the two wheels!? One's enough, surely? Also, those saddles are for softies, eh? And the handlebars, yes.
Cugel
PS And do cyclist really need clothes if they're trying hard, even if it is snowing?
Why the two wheels!? One's enough, surely? Also, those saddles are for softies, eh? And the handlebars, yes.
Yes woosh do use 17 - 20a controllers but that isn't there true rating but th max rating, as I mentioned most ebike controllers are rated typically 7a for a lot of 250w systems but will operate at double, hence why I said woosh use 9/10a models as they will operate at about double. My kt's are 12a but one can push 25a as the this is stated on them +/- 1a.
Absolutely.mattsccm wrote: ↑30 May 2022, 9:05pm It needs enough power to get the rider to the top at the speed of a normal, not especially fit non ebike equiped rider. So, as in my case yesterday, on the local 25% hill, about 4mph.
We are talking bikes with a bit of boost for the less fit here, not a new form of motorised transport.
Rear dropout is 130mm on this little Dahon and all the rear hubs i have found seem to be 135mmstodd wrote: ↑31 May 2022, 9:06amAbsolutely.mattsccm wrote: ↑30 May 2022, 9:05pm It needs enough power to get the rider to the top at the speed of a normal, not especially fit non ebike equiped rider. So, as in my case yesterday, on the local 25% hill, about 4mph.
We are talking bikes with a bit of boost for the less fit here, not a new form of motorised transport.
As a matter of interest, do you have a hub drive or a crank drive motor? Most hub drives are getting really inefficient by the time you slow to 4mph. eg our XF07 is down to just over 40% efficient at 6mph and only just over 40% at 4mph.
https://ebikes.ca/tools/simulator.html? ... h&grade=13
Now that is a highly relevant statistic! It suggests that a mid-motor drive through the gears is going to remain much more efficient (assuming you have low enough gears) at very slow or just-rideable speeds. For some, that would be a primary consideration when deciding on which type of motor system to go for.stodd wrote: ↑31 May 2022, 9:06amAbsolutely.mattsccm wrote: ↑30 May 2022, 9:05pm It needs enough power to get the rider to the top at the speed of a normal, not especially fit non ebike equiped rider. So, as in my case yesterday, on the local 25% hill, about 4mph.
We are talking bikes with a bit of boost for the less fit here, not a new form of motorised transport.
As a matter of interest, do you have a hub drive or a crank drive motor? Most hub drives are getting really inefficient by the time you slow to 4mph. eg our XF07 is down to just over 40% efficient at 6mph and only just over 40% at 4mph.
https://ebikes.ca/tools/simulator.html? ... h&grade=13
I disagree, ebikes are not just for those with health/fitness issues, and they are indeed a new form of transport. A lot of people are using them for commuting, because for example they aren't sweaty, but still getting some exercise - it just gives people another option.
Just so.the snail wrote: ↑2 Jun 2022, 9:26pmI disagree, ebikes are not just for those with health/fitness issues, and they are indeed a new form of transport. A lot of people are using them for commuting, because for example they aren't sweaty, but still getting some exercise - it just gives people another option.
the snail wrote: ↑2 Jun 2022, 9:26pmI disagree, ebikes are not just for those with health/fitness issues, and they are indeed a new form of transport. A lot of people are using them for commuting, because for example they aren't sweaty, but still getting some exercise - it just gives people another option.
Carlton, such machines exist and they are called "Speed Pedelecs". Essentially they are ebikes that are unrestricted for road use and as such they require Tax, insurance, registration an M.O.T where apropriate and a licenced rider. Moped driving licence. Essentially they are mopeds as such and to the best of my knowledge are only marketed comerciallly in the UK by CUBE at present, but there may be others.Carlton green wrote: ↑3 Jun 2022, 6:36pmthe snail wrote: ↑2 Jun 2022, 9:26pmI disagree, ebikes are not just for those with health/fitness issues, and they are indeed a new form of transport. A lot of people are using them for commuting, because for example they aren't sweaty, but still getting some exercise - it just gives people another option.
If ebikes give someone another option then isn’t that another form of transport, and as a motor is involved then it follows that that is a new form of motorised form of transport. That’s not to say that I’m against low powered ebikes, a bit of a boost for the less fit is very welcome. On the other hand faster and higher powered ebikes confuse; I suggest that they need to be recognised as mopeds and distinct from bicycles or else there will be cries demanding all types of restrictions on cyclists.
Thanks for that clarification. I worry about the grey area in between clear mopeds and those trying to get away with having a fast bike that escapes the moped category. With ebikes a bit of help up the hill and maybe into a strong head wind is, to my rough judgement, enough to enable someone to remain cycling and no more than that. What counts as a bit of help? Well to my mind a constant limit of 300 watt of electrical power from the battery would be a good start point with motor gearing sufficiently low to stop speed falling much below say 10 kph. So peak mechanical power of say 250 watt is delivered at quite a low road speed and there isn’t much power difference between the boost given by the motor and what a reasonably fit ‘normal’ person would likely produce; the effect of the electrical boost being to assisted the old rider with the equivalent of some younger legs so he or she doesn’t have to either give up cycling or walk most hills.saudidave wrote: ↑3 Jun 2022, 8:52pmCarlton, such machines exist and they are called "Speed Pedelecs". Essentially they are ebikes that are unrestricted for road use and as such they require Tax, insurance, registration an M.O.T where apropriate and a licenced rider. Moped driving licence. Essentially they are mopeds as such and to the best of my knowledge are only marketed comerciallly in the UK by CUBE at present, but there may be others.Carlton green wrote: ↑3 Jun 2022, 6:36pmthe snail wrote: ↑2 Jun 2022, 9:26pm
I disagree, ebikes are not just for those with health/fitness issues, and they are indeed a new form of transport. A lot of people are using them for commuting, because for example they aren't sweaty, but still getting some exercise - it just gives people another option.
If ebikes give someone another option then isn’t that another form of transport, and as a motor is involved then it follows that that is a new form of motorised form of transport. That’s not to say that I’m against low powered ebikes, a bit of a boost for the less fit is very welcome. On the other hand faster and higher powered ebikes confuse; I suggest that they need to be recognised as mopeds and distinct from bicycles or else there will be cries demanding all types of restrictions on cyclists.
They're not unrestricted, they have different restrictions, I think the top speed is 45kph. And yes, there are others marketing them, see my earlier post in this thread for an example.saudidave wrote: ↑3 Jun 2022, 8:52pm Carlton, such machines exist and they are called "Speed Pedelecs". Essentially they are ebikes that are unrestricted for road use and as such they require Tax, insurance, registration an M.O.T where apropriate and a licenced rider. Moped driving licence. Essentially they are mopeds as such and to the best of my knowledge are only marketed comerciallly in the UK by CUBE at present, but there may be others.