Endless Sphere

I have to agree, they are a level above everyone else especially from China. A level of service that is not that far from Tangent-Dave actually. They are smart enough to understand in a market as small as this they can't afford to make enemies. Rather take a loss on something for possibility of mak...

Trials cranks. I have jitsie 140mm

Yea, the emoto people use the qs 3kw motor on 20-30kw dirt bike conversions. Even the qs mid drive 1kw is good for more power than a cyclone 3k.

DingusMcGee wrote: ↑

Jan 08 2021 10:56pm

Tommm,

Here is a comparison between the Cyclone 3K motor and the 3K QS motor.

IMG_0432.JPG

3 days later:

IMG_0674.JPG

IMG_0675.jpg

The QS 3K motor is a bit faster than the Cy 3K.

What sprocket are you using on the motor and the crank?

The motor and china battery will struggle to handle 35mph continous comfortably. Motor would handle it except in hot weather.
Drop it to 30mph and you're good.

Room left over for some additional strengthening of the pivot point..20210102_140123.jpg20210102_132914.jpg If you are using an axle hole interface for the pivot it is better to weld some bushing holder instead of frame to axle action. Otherwise even if greased the pivot hole will be a half inch up...

Room left over for some additional strengthening of the pivot point..20210102_140123.jpg20210102_132914.jpg If you are using an axle hole interface for the pivot it is better to weld some bushing holder instead of frame to axle action. Otherwise even if greased the pivot hole will be a half inch up...

bike4life wrote: ↑

Dec 27 2020 4:21pm

hello... I bought a 48v / 72 volt controller from china... link to controller http://ebay.to/2Jl7HS4

Damn, can you make a side profile pic for that bike?

A quick update on my experience. The vendor for one of the packs sent me a replacement. This was the pack that started sparking up and burning a hole through its bag. I've been riding with it for only 20 days and already, it just started to not get a full charge. It stops charging at 53v, whereas i...

When I load it too much it feels like the motor throws itself in reverse and then forwards again, really fast. I had the exact issue, a motor magnet was cracked. Ask cyc for a replacement motor core. Also if the inside of the motor surface is uneven, it might crack your new magnets too, so sand any...

I have simple freewheel rear (16t) and 42t cog front, it is alright to 38-40. For higher speed 44t or 46t front would be better.

Anyone having problems pushing more than ~50A (battery) to their CYC? I have a first gen and running it sensorless with a castle creations talon 120 and a cycle analyst. This setup, using pass-thru throttle is damn near perfect and would easily replace my dead Tangent drive - if it was just able to...

I am afraid I don't know exactly which torque sensor I have...it is just the standard one that came with my gen 2 kit. I am trying to fix a new "interesting" problem I had at the weekend...the bike went full power and stuck on full power when i was trying to pass walkers in the woods...fa...

matt912836 wrote: ↑

Dec 20 2020 7:47am

it turns out I was after the 6k motor after all and not the 4k motor. Paco offered me a motor core alone to swap onto my 4k gearbox at a discount but I opted to buy a full motor instead, so he sold me one with free overnight shipping straight from china.

Can you shoot some comparison pics?

The axle bends for many people, but typically they have 100mm or 120mm version. I don't think the cogs have a lot to do with it though.

I am looking to buy a secondhand ASI BAC 4000 controller but the seller tells me this controller has been set up for a surron battery (60v nominal)('Rated system voltage'=60v). My battery is 20s li-ion (72v nominal) and I was wondering how to change this setting, if it is possible, how difficult it...

Reversing and regen... Fixed clutch is at least an option, if not standard. This is terrible on terrain but may be just an option. It has to do more with the rear clutch more anyway. Although a belt is a bad bet on terrain too, not enough tension with a rear suspension bike. All in all looks like a ...

Tommm' For example a lot of dirt bike conversions use the 3kw and 4kw QS mid motors, and they use them at 30kw and 40kw peak, without overheating or damage. So the controller that puts out the 40Kw for these dirt bikes might operate at 400amp @100 volt? Or 300 volts at 100amp for the 30Kw. Could yo...

Grantmac, Do you research anything you post on this site? http://www.qs-motor.com/product/qs-motor-138-4000w-90h-pmsm-mid-drive-motor/ From the above link I see the QS 4000W mid Drive motor weighs 12.8 kg See Cyclone site https://www.cyclone-tw.com/product/1/data/15 From the Cyclone 6 kw motor site...

Kuberg sell the motor complete just under a grand and I got a baby on the way, I'm gonna scrap it all along with 2020 change my hobby to walking up in the night instead had a shit full be honest this is just the icing on the cake my car broke down, then my phone kept restarting and now this at a ti...

Could hear clicking past few rides so I've stripped it down and the motor has chucked a magnet and most of them seem lose in the rotor so its met the end if the road for me I've spent load to much got all new brakes charger just under £1000 and this happens I'm fuked off with electric bikes if anyo...

Consider yourself lucky you didn't blow up your bike frame and possibly lose an eye from this "testing".

Not possible to comfortably cruise that fast with that much weight without a rear suspension. Then it becomes difficult to find a suitable rear rack for a rear suspension bike.

Aligning chainline: Front = Longer chainring bolts and washers to space chainrings.Rear = Cassette spacers and remove unneeded cogs.

Tangent is still awesome to drive. I also own a LMX-64 but the Tangent is more power al the way. The main problems are keeping the chain in one piece. :wink: WhatsApp Image 2020-04-10 at 21.26.04(1).jpeg A matter of trading torque for rpm. Then use a big rear cog to multiply it back up to the same ...