qeeeme

thanx a lot flecc i tried for months to get such informations, now you are giving me this in minutes. i remember now having been in a bike shop and reading a kalkhoff agattu notice and there there was a curve on power given by the biker and the panasonic unit with something like power of the unit increasing linearly between 0 and 15 km/h and then decreasing from 15 to 25 km/h . now, knowing that there are differnt level of power internally i understand it better.

thanx again for this forum and the lot of informations in it. it helped me a lot. I read too that it is very difficult to find information on the flyers maybe because the company is not giving so much on internet. so i am happy to hear that because without you it was almost impossible for me to find informations except advertising or speaking with sellers trying only to trigger my buying of their products i still try to understand better the motors in the middle the panasonic motor is assisting me because it is rotating a sprocket which is connected with my chain. it is like a tandem ideal would be that the sprocket is rotating as i want. but this is not the case. it is rotating as the cpu is driving it. because it is programmed in a certain way will we some day be able to program such units as we want? maybe but it is a long way to this future maybe so what i am trying to understand today is how more or less this is programmed 1. beside of panasonic who is offering such system today? - are they many panasonic motors? what are the differences? - for example i see with flyer:"sport" motor for 85 cadence, apart of this one all other are similar? and for kalkhoff or raleigh it is the same motor? all with battery 26 V? 2. apparently the cpu gets the information on speed: through the hall sensor which is getting the chain speed now this is a chain speed , how do they deduce the bike speed? putting a maximum of ratio knowing which gear system is mounted? or chain speed is enough? 3. in the flyer advertising they speak about a torque sensor. so anyhow this information is guiven to the cpu okay then it is like that: - the cpu gets the information: - speed of the bike (how? or speed of the chain enough?) - cadence (?) because the cpu is programmed to cut at 70 or 85 (motor sport), or no cadence information? the cut at 70 or 85 cadence is maybe just the result of something else. of what then? - torque applied then the cpu is so programmed that at s, c, T given a certain current is given to the motor and then it produces a certain speed and torque why are this limitations in assistance at 85 cadence? but maybe i think too much, maybe i will never reach such cadence so it is far enough for me this questions are due to the information read about someone not happy with flyer T8HS due to "too much torque given and then pain on knees". in this case this bike is not interesting for me because i try to see what is healthy. as far as i understand, when cycling when i want to go faster there are 2 options, either improve the cadence or improve the torque and maybe panasonic is so designed that only one direction is possible

someone offers here in germany a used pedelec for 1000 euros but he is ready to go down and negotiate the price (which is maybe far too expensive?) i have seen the bike it is written yamaha pas x 099 and it has 4 gears (i think shimano). the battery is NiCd and i think 22 or 20 or 24 volts i have been on the bike and it seems to be like the panasonic unit on flyer etc do you have any suggestion about this product? i think if he is ready to go down with the price it could start to be interesting for me to make experience with motor in the middle and panasonic. of course the battery i must see for a new one and include those costs in the price i can think about

pedelecs - s = pedelec i have been searching for long time for a pedelec forum and didnt find you. maybe i was typing in google "pedelec forum" and not pedelecs forum. so maybe you could do so that someone searching with "pedelec" and not "pedelecs" find the forum

how does a panasonic motor works? (or where is it explained in the forum, sorry i didnt find it yet) this panasonic motor is to be found on flyer and raleigh and kalkhof in flyer they spek about frequency (cadence) of 70 or 85 (sport motor) so i can imagine that somehow my frequency of pedalling is registered and than is registered too the torque i apply and then i have to choose the mode between 3 modes (low, middle , maximum) but those will be similar, only difference on how much assistance is given - so lets imagine i put my mode on maximum and i start on a flat land. - i start on a flat land, with mode maximum and with gear 4 (as an example gear 4 from 8) and let say i put my weight on the pedal (or the corresponding torque). the panasonic unit detects that and will give a certain motor power and it will help me drive the chain and i feel it and the bike starts. then what happens? let say i stay on the gear 4 (to understand) and on a flat road. if i apply a highest torque to accelerate than the motor register it and helps, provides assistance. if i improve the "cadence" (or frequency? what is the right english word?) on pedalling than the motor is less and less assisting until i reach the maximum "cadence" of 70 or 85 where the motor doesnt assist more? - depending on the gear i choose and on the road i have i apply a certain "cadence" and a certain torque. how does panasonic reacts to that? how can one imagine the unit function? - i think of several images of driving : 1. i have a constant speed, torque and cadence on a flat road. is panasonic assisting? with a hub motor i choose the assistance with the throttle. 2. i apply a highest torque because i am starting or going on a hill or changing the gear, then panasonic assists. until when? when my cadence reach the limit there is no more assistance

Because it is so wide the world of pedelecs, i will try to test them and find out which is the best for my money + needs + fitness goals etc. But now i have following ideas: - i can take an old bike and put a suzhou Bafang Motor on it. Any experience with this? - As i owned a cheap bike with suzhou Bafang (gave it back, too much problems for 500 euros for me), i still have spare parts of it (service gave me this parts but it didnt help): i have: - a 36 V led battery + charger - a controller for the suzhou Bafang Motor - a "gas throttle(?)" i hope it is the right endlisch word for what is in your hand to give more speed well the bike was with 26 tires -Now where to buy the Suzhou Bafang Motor? - Do you know where i can buy it? i will then need a hall sensor for the bike (or for the input on the controller) + a brake at the end i will have a cheap solution and understand more about this pedelec world?

maybe i am not using well the "quote buttons"

Yes, it was the Rex 36 Volts. My problem was: 3 gears = not enough, too heavy or too easy so it was not possible to use it really, some parts of the bike broke easily but the worst was that sometime the motor just didnt function in the middle of nowhere (and then being there with a heavy bike) and then suddenly it functionned again. thermical problems? i was putting too much on the throttle? anyway rex had a service and they visited me but they were mainly mechanic people understanding little of pedelec, so they changed me battery or controller but this gave nothing really. so i gave it back. yes it was a suzhou bafang motor

there are 50 km total, 25 there and 25 km back with my race bike i did it once fats in about 1 hour (without tachometer) actually, winter, cold not so well , thinking about pedelecs, i do it with an average of 18 km/h i think steepest hill: 50 m high and lowest point 0 m.

Hello, i am glad to have found your forum. Here in germany i found no similar forum on pedelecs. I am 42 and i have a distance 0f 25 km (15,5 miles). i have to go back and forth. i do it with a "race"bicycle . but sometime it is just too much so i take train + busses but it is expensive and not so flexible (few busses) and i think about "save the earth, dont use gas" and i think about "cheap cheap electric bicycles are cheap in electrical consumption" so i am a potential buyer of pedelec so welcome to the jungle EVERY buyer tells me that his product is appropriated for me because of "bla bla bla theory" then i have bought a german bike (rex ebike) + china motor (suzhou bafang) + led battery. it was cheap somehow, 500 euros. but after 6 months i gave it back (thanks God it was possible). The bike had only 3 gears, it was not possible to work with my muscles (too heavy or too light) and many cheap parts of the bioike went broken and sometime the motor didnt work (overheat, bad quality?) So now what? i am standins in front of more than 20 companies and bikes and no really possibility to test and to give back what is not good for me so maybe your theoretical and experience information will help me 1st question: - comparing with a "racebike" how good, bad, better, worst is a pedelec for the "sport" effect. Imean, with the race bike i still have to grow in relationship to bicycle and health, how i can do what for my fitness. When i have time and i am fit i will cycle with my racebike and invest the money there, until i understand better bike+fitness. And what happens with your pedelecs? which effect has it on health? of course you are everytime "outside" "fresh air" + you are "cycling with your muscles if you want". but thast is the point. Is it not possible to have a triathlon position with motor in front? (too heavy for motor and front wheel), if the motor is in the middle you cannot really use your muscles because to drive this middle motor you have to give torque there and this is unhealthy? (for health, better a easy gear and the heart is working and the frequency is higher?) 2nd question: -i am tending to the S-Flyer from Biketech switzerland. i dont see it yet in this forum (sorry i should seek mor i know). Are some users here? is it worth the 3500 euros? am i then really quick? and good for health or too much torque needed? 3rd questiion: where is the fronteer between: i dont need a pedelec, for this short distance and my normal health for 42 years any bike is okay and 15 miles are too much today i want to make the trip without being tired after and not pyaing/waiting for busses. so what is your experience between: now i take my bike and make sport or now i take my pedelec because i want to not be tired (and i even make sport with it?) thanky for your patience, next time i will try to ask more specifivc questions ramo