Can electrifying a bike be this easy?
- Thread starter mifletz
- Start date
Can't see it working too well with knobbly tyres. Bit gimmicky imao.
They'll be reinventing the Currie Electro-Drive next lol
They'll be reinventing the Currie Electro-Drive next lol
**** me, there's an instant pedelec business, you should try crowdfunding really, could be a threat to kalkhoff etc, very stealth too (apart from the screams from the cheap, nasty brushed motor as one plough up that hill at 5 mph..)
Nope - I've seen at least 2 others:Is the add-e the only way of electrifying a bike with the ability to totally disengage the motor from the wheel ie to cause zero cogging and drag if one wants to have the ability to pedal normally?
this one is probably illegal in the UK as the motor doesn't cut out when the brakes are squeezed and it's not on the bike:
http://ridekick.com/
(but I do love the concept!)
This was started buy a kickstarter campaign about a year ago and looks very simple - but probably somewhat lacking in power (works along the same design as the picture above)
http://www.rubbee.co.uk/
D
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The Q-series motors and the Xiongda have their clutches on the hub, so only the hub turns when freewheling, just like a normal bike.
Can you confirm that.
I was told by someone who has such a Bafang CD kit that although it can freewheel, it still drags considerably when pedalling when the power is switched off
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They do drag very slightly when pedaling, due to the fact that you are turning the large cog and smaller cog when doing so.Can you confirm that. I was told that although CD kits like this Bafang can freewheel, they still drag when pedalling when the power is switched off
You don't end up turning the motor though, as it has a one way clutch/bearing at the other end of the small cog, where a nylon cog connects to the motor drive spindle.
Both CD bikes I’ve owned have minimal motor drag. The Kalkhoff I have now can be pedalled past the cut out on the flat with little more effort than my non powered bike. The extra effort being the weight rather than drag.Can you confirm that.
I was told by someone who has such a Bafang CD kit that although it can freewheel, it still drags considerably when pedalling when the power is switched off
Someone else wrote:
I have the bafang bbs02 and when powered off there is considerable drag making pedal riding difficult. I try not to run out of power before getting home because unless I'm less than 1/2 mile away I'll end up walking.
This new friction drive disengages when you stop pedaling or when powered off. There is a 50kph model available but it's a kickstater with scheduled delivery next month, or so they say. https://www.youtube.com/watch?v=5We8eqUGya8
I have the bbs02 and can't say that i have noticed any drag at all with the motor off. I think it can be really easy to think there is drag on any pedelec as you get lulled by the ease of peddling with the motor and then have the stark reality of peddling what is a considerably heavier bike than an unpowered bike.
I used to think there was a tiny bit of drag on my Bosch bikes.
But after further unpowered trials, I've decided there is none.
As John says, you will always feel the 20kg+ weight of the bike.
My thought as well (upto 70% of eachof my rides can be unpowered) that was untill last week.
During a long conversation with Jack,my new favorite contact at leasure lakes,
( there E-bike specialist ) we discussd drag. Apparently a un powered Bosch motor saps 16% of the riders power just turning the motors gears Yamaha on the other hand has no motor related losses
But after further unpowered trials, I've decided there is none.
As John says, you will always feel the 20kg+ weight of the bike.
My thought as well (upto 70% of eachof my rides can be unpowered) that was untill last week.
During a long conversation with Jack,my new favorite contact at leasure lakes,
( there E-bike specialist ) we discussd drag. Apparently a un powered Bosch motor saps 16% of the riders power just turning the motors gears Yamaha on the other hand has no motor related losses
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So what you are saying is that by riding your Bosch unpowered. You are riding a resistance machine and getting even fitter! Well done!I used to think there was a tiny bit of drag on my Bosch bikes.
But after further unpowered trials, I've decided there is none.
As John says, you will always feel the 20kg+ weight of the bike.
My thought as well (upto 70% of eachof my rides can be unpowered) that was untill last week.
During a long conversation with Jack,my new favorite contact at leasure lakes,
I think the specialist at Leisure Lakes needs to do a bit more research.I used to think there was a tiny bit of drag on my Bosch bikes.
But after further unpowered trials, I've decided there is none.
As John says, you will always feel the 20kg+ weight of the bike.
My thought as well (upto 70% of eachof my rides can be unpowered) that was untill last week.
During a long conversation with Jack,my new favorite contact at leasure lakes,
Although he does demonstrate the average bike shop employee's ignorance of ebikes.
If there is any motor drag on a Bosch bike, and I'm not convinced there is, it is nowhere near 16 per cent of pedalling effort.
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