Search found 131 matches

by joe81
Jan 13, 2018 3:06 pm
Forum: E-Bike Technical
Topic: 19" Motorcycle Wheels vs 26" Bicycle Wheels (rim and tires)
Replies: 2003
Views: 190959

Re: 19" Motorcycle Wheels vs 26" Bicycle Wheels (rim and tires)

200Amps for 10k? :twisted: What is the weight of your bike?
by joe81
Jan 13, 2018 5:20 am
Forum: E-Bike Technical
Topic: 19" Motorcycle Wheels vs 26" Bicycle Wheels (rim and tires)
Replies: 2003
Views: 190959

Re: 19" Motorcycle Wheels vs 26" Bicycle Wheels (rim and tires)

Yep, the QS really as a lot of "unsprung" mass... :roll:
I think I give the bike a try as it is on 19" front and rear and later maybe have it re-laced to 24"DH and 18"MX here in Germany.
Possibly downgrading to a lighter motor.
by joe81
Jan 12, 2018 9:34 am
Forum: E-Bike Technical
Topic: 19" Motorcycle Wheels vs 26" Bicycle Wheels (rim and tires)
Replies: 2003
Views: 190959

Re: 19" Motorcycle Wheels vs 26" Bicycle Wheels (rim and tires)

I tried in vain with CNebikes and evelbike.
they said they cannot offer the big motors with cross patterns. I also tried pushing them to do 3x or 4x on their front wheel... nope. seems I am the only one asking them
by joe81
Jan 12, 2018 9:23 am
Forum: Items for Sale - New
Topic: Electric Enduro Frame with QS 273 4000W-16KW
Replies: 21
Views: 2129

Re: Electric Enduro Frame with QS 273 4000W-16KW

Hey there,

I'm just curious how the QS273, the Enduro Frame and the radial lacing is holding up in the long run at 16kW?
Some experience here? :mrgreen:
by joe81
Jan 12, 2018 9:08 am
Forum: E-Bike Technical
Topic: 19" Motorcycle Wheels vs 26" Bicycle Wheels (rim and tires)
Replies: 2003
Views: 190959

Re: 19" Motorcycle Wheels vs 26" Bicycle Wheels (rim and tires)

I am looking for something that can take some beating offroad and fits the Enduro Ebike frame. The 17" looks nice and probably is a good choice on the road, but a cast wheel is not what I am after for this bike.

Thank you for your input I am more positive to try the radially laced option now.
by joe81
Jan 11, 2018 5:01 pm
Forum: E-Bike Technical
Topic: 19" Motorcycle Wheels vs 26" Bicycle Wheels (rim and tires)
Replies: 2003
Views: 190959

Re: 19" Motorcycle Wheels vs 26" Bicycle Wheels (rim and tires)

it is a 273 in 19" wheel.
i guess there is no other way to lace it (or they could't find the right length spokes? :| )..
actually, i looks like they bent the spokes to force them in radial position.. :roll:
by joe81
Jan 11, 2018 3:06 pm
Forum: E-Bike Technical
Topic: 19" Motorcycle Wheels vs 26" Bicycle Wheels (rim and tires)
Replies: 2003
Views: 190959

Re: 19" Motorcycle Wheels vs 26" Bicycle Wheels (rim and tires)

for me as a mechanical engineer it feels a very bad idea. at heavy loading, jumping, or cornering.. i do not see a real issue, but a spoke is made and basically can only bear a force along its axis. and in the rear there are torques in two directions (braking and accelleration) that must be transfer...
by joe81
Jan 11, 2018 3:18 am
Forum: E-Bike Technical
Topic: 19" Motorcycle Wheels vs 26" Bicycle Wheels (rim and tires)
Replies: 2003
Views: 190959

Re: 19" Motorcycle Wheels vs 26" Bicycle Wheels (rim and tires)

Guys, please let me know your opinions - based on experience. What can I expect from a radially laced rear wheel at 16kW of power?
by joe81
Jun 17, 2017 2:08 am
Forum: E-Bike Technical
Topic: Coast -> throttle apply -> dead. KT72SVPRK + KT-LCD3
Replies: 7
Views: 286

Re: Coast -> throttle apply -> dead. KT72SVPRK + KT-LCD3

it only happens sporadically when in the transition from coast. so it's still spinnng forward but i think it's braking a bit.

battery seems okay. the next seonds i can accellerate strongly (stronger than the request when the issue happened).
by joe81
Jun 17, 2017 12:49 am
Forum: E-Bike Technical
Topic: Coast -> throttle apply -> dead. KT72SVPRK + KT-LCD3
Replies: 7
Views: 286

Re: Coast -> throttle apply -> dead. KT72SVPRK + KT-LCD3

good info!
next time i will try what happens when i disconnect the display.
battey voltage (SOC) is good. it only happens when i apply the throttle bit. the motor delivers negative torque then.
maybe some setting is so off that i pull down battery voltage below what the display can handle. :shock:
by joe81
Jun 16, 2017 8:32 am
Forum: E-Bike Technical
Topic: Coast -> throttle apply -> dead. KT72SVPRK + KT-LCD3
Replies: 7
Views: 286

Coast -> throttle apply -> dead. KT72SVPRK + KT-LCD3

Hey there, I have a strange phenomenon with my Kunteng sine wave controller KT72SVPRKD-LCD + KT-LCD3 running on 72V and would be interested to hear your opinions. Very sporadically when I reapply throttle from coast condition there is no power and the display goes blank. It feels like a short or the...
by joe81
Jun 09, 2017 7:03 pm
Forum: E-Bike General Discussion
Topic: Solar camping trailer to recharge ebike while overlanding
Replies: 87
Views: 4793

Re: Solar camping trailer to recharge ebike while overlandin

i think this one is not ideal for solar, because of the way it folds over. so alot of the time the panel would stand upright.
by joe81
May 25, 2017 3:00 am
Forum: E-Bike Technical
Topic: ENDUROEBIKE.COM
Replies: 219
Views: 19484

Re: ENDUROEBIKE.COM

Another great vid Andy. If you're gonna be riding off-road you definitely need to get some knobbies on there. My bike is coming with the Evelbike Grizzly on the front which I believe to be the Duro Wildlife Leopard (I'm getting the 24" front wheel) and I'll be installing the Duro DM1155 (19") on th...
by joe81
May 24, 2017 9:53 am
Forum: E-Bike Photos & Video
Topic: 72 vott e-bike
Replies: 40
Views: 4698

Re: 72 vott e-bike

nice. doesn't look so much bigger!
by joe81
May 20, 2017 12:17 am
Forum: E-Scooter and Motorcycle Photos & Videos
Topic: My Chinese Ebay Build
Replies: 132
Views: 9580

Re: My Chinese Ebay Build

slightly wider rear would actually be beneficial for cornering characteristics.
smaller diameter like 17" or 18" could make sense though if you don't need the clearance.
by joe81
May 18, 2017 2:20 am
Forum: E-Scooter and Motorcycle Photos & Videos
Topic: My Chinese Ebay Build
Replies: 132
Views: 9580

Re: My Chinese Ebay Build

I'd guess the charger cuts back on the current at around 90%
by joe81
May 16, 2017 9:03 pm
Forum: E-Bike General Discussion
Topic: Enduro ebike swing arm dropout problem
Replies: 21
Views: 1024

Re: Enduro ebike swing arm dropout problem

wow. that sounds like some major modifications! :twisted:
by joe81
May 16, 2017 10:39 am
Forum: E-Bike General Discussion
Topic: Enduro ebike swing arm dropout problem
Replies: 21
Views: 1024

Re: Enduro ebike swing arm dropout problem

what was wrong and where did you source the frame?
here in china it's a rule that the front and rear wheel of everything cheap with two wheels must be comically misaligned.. :lol:
by joe81
May 15, 2017 7:08 pm
Forum: E-Bike General Discussion
Topic: Enduro ebike swing arm dropout problem
Replies: 21
Views: 1024

Re: Enduro ebike swing arm dropout problem

no I didn't have this problem you should ask for new ones ( did have other problems ) like the drop out is not centred but it is made for a 48v motor 7 speed cassette/free wheel if you find a company with a keyway machine they can sort that out I did this with my frame as I have a motor with 12mm a...
by joe81
May 08, 2017 12:33 am
Forum: E-Scooter and Motorcycle Photos & Videos
Topic: My Chinese Ebay Build
Replies: 132
Views: 9580

Re: My Chinese Ebay Build

thank you.
that sounds like a special width. so it's similar to the leili frame in that respect. probably the room is necessary between the cranks to accommodate the wide frame and the batteries inside of it.
..no use for all the cranks that i have sitting around.. :roll:
by joe81
May 07, 2017 9:48 pm
Forum: E-Scooter and Motorcycle Photos & Videos
Topic: My Chinese Ebay Build
Replies: 132
Views: 9580

Re: My Chinese Ebay Build

looks very nice!
does this frame have a standard bottom bracket width (like 68mm?)?
i had too many bad experiences with the taper square type and would want to change it.
by joe81
May 07, 2017 7:09 pm
Forum: Battery Technology
Topic: Ageing and wear mechanisms in Li-Ion
Replies: 4
Views: 247

Re: Ageing and wear mechanisms in Li-Ion

otherwise it's only the pages of batteryuniversity.com
..but that's general stuff. not answering my questions, such as how the battery's characteristics change after capacity is reduced due to the different wear mechanisms.
by joe81
May 07, 2017 6:55 pm
Forum: E-Bike General Discussion
Topic: Low cost Down Hill Triple Crown Fork
Replies: 34
Views: 8743

Re: Low cost Down Hill Triple Crown Fork

any more real experience with cheap taiwanese/chinese forks here?
my bomber z1 is losing oil and i think it's time to upgrade to DC with simple coil and oil sump (no cartridge!).
by joe81
May 07, 2017 8:04 am
Forum: Battery Technology
Topic: Ageing and wear mechanisms in Li-Ion
Replies: 4
Views: 247

Re: Ageing and wear mechanisms in Li-Ion

thanks. found that already. I agree, it's good stuff!