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If they build it right this tiny motor can actually performed superbly well for various type of rider and will last longer based on my observation daily commute on two PRO unit. Some how its all about Quality Control (QC) problem that wrecks it. FYI, i wreck a lot of hub wheel bearings because...

[Evening commute return home] - New QR-E PRO V2 performance stats (human + machine). This is today evening performance chart as i ride back from office. Its seem each day the new QR-E PRO V2 seems to improve lot better after many cycles. Now its easier to accelerate at peak 45km/h~48km/h in...

New problem with QR-E PRO (Version 2)....crackling roller/bearing sound. I think the roller on the new model is not as durable as the old ones, the bearing started to make loud crackling sound. Its sound like bearing have no grease or something. Remember its new and few week old into its...

[Morning commute] - New QR-E PRO V2 performance stats (human + machine). Did some performance measurement on new QR-E PRO (version 2) and how my body handles throughout pedaling commute to work today (with some stops at traffic lights and few slow down at traffic). It seem the new unit perform...

Beautiful place!!! Where you live is heaven right there! You're blessed to have scenic place to roam about. As a mountain biker my mid drive 750W Bafang would appreciate traveling this glorious hills and valleys and take some nice shots. I have photography as a hobby. How did you ended up...

Btw my new QRE PRO (V2) on my 2nd bike started to show its true color today. I'm very happy and proud it perform as good as the old PRO. I have some video on twitter showing how fast it could go with the traffic flow and pacing without motorist...or maybe i drank to much sugary drinks...

Any knee problem when riding/pedalling the bike? You need the QRE Pro for steep trails in the future. ;) I'm gonna contact Jason soon about the battery health things, but i'm curious how to open up the battery canister so i can check if all the lion battery well balanced or if its BMS board...

Looks cleaner and well sealed. Any feel of extra motor performance with thicker gauge wires? Btw have you measured the battery voltage health after prolonged used? Wish Qiroll added Digital LCD display to show actual voltage level like Bafang does instead of LED bars.

When i opened the Qiroll unit the cavity area inside the plastic case where the roller pivot attached i think you can make mini size spring hinge insert into it for more cleaner looks. But takes lots of craft works to compress the spring inside. Just think of the same spring that recoils rear...

Glad your sander friction tape holding up. I'm having wet rainy weather this month, thankfully mines also holding up with perfect torque going up the hills. Your Qiroll behind seat stay above is ideal to keep the dirt and grimes away from road surfaces. All my small short frame doesn't have...

No news yet from Qi-roll support. Not sure when i can revive my white stallion.

Latest updates on the old QR-E Support: Will receive another PRO unit replacement. So i received reply from the Jason the Qiroll support; the engineer says that the spot that looked like a burned hole on PCB circuit board was actually a window epoxy point, its a place or hole where they start...

Hi kenz, If this was your first PRO then nothing wrong with the assist performance. Its still very powerful for something lightweight at 320W. I still love my new PRO on my 2nd build its very silent and still fast. Its just that i have so much attachment for the older PRO version for being...

The burned part probably some MOSFET (ESC) or related. Morning before the QR-E PRO (old V1) breaks down; i ride to work i felt like the bike was 20% accelerate faster than usual and when ever i pedal it seem lighter and easier than before...felt no friction, that felt good!! Then evening when...

Troubleshooting old QR-E PRO (V1) Hey guys, i manage to dismantle the old QR-E PRO and access to the main board. Found out the possible reason why it has a problem; looks like there's a hole burned in the middle of the PCB board. Looks like the whole unit controlled from one single board hard...

Looking good! Any videos of mechanism in action?

Updates: Not able to send the parcel out due to delivery small parcel bureaucracy (damn local post office) so i decided to keep the old QR-E PRO and try to fix it my self. Probably i'll buy new ones again for my white Merida.

Impressive work on the clutch function. Love how you mount dual side by side battery.

Video: First day performance on QR-E PRO version 2. Woohooo!! fresh new build, silent and fast!! Love it! Yes still using the old H-70 battery. Video: https://x.com/SupermotoXL/status/1795052695717400985

Monday commute with E-bike number 3: New Qiroll QR-E PRO Version 2. Finally took out the bike for wet morning commute to the office. Hit lots water and puddles without problem slipping because i use floor grip tape. Felt like new E-bike again. Very silent and still as fast as my old Pro unit...