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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...

Support news: Old broken QR-E PRO will be send back to Qiroll warehouse in China for inspection/repair. Good news! Manage to get reply from Jason (Qiroll support). He ask me to send back the old broken QR-E Pro for their engineer to inspect and hopefully they can get it fixed.

Yes impressive services it give since its been 2 years on daily all weather use but for me 2 years its quite short of a lifespan. I'm still waiting for Jason reply on how to solve it. I might want to open to see whats inside that caused the problem. But i'll wait for his email first...

Video on problematic QR-E PRO (old model) Crackling electric sound inside the unit after plugin the battery. I did some test ride outside but the unit was blinking green then white. Suddenly as i get close i can hear some crackling sound like electric like spark sound. I immediately remove...

Latest: Problem with old version QR-E PRO Has anyone have solution to this? Yesterday morning i ride to office the QR-E PRO motor suddenly felt like hitting a re-gen brake and slowing down, then a few seconds it throttle back to normal. It does that 4x through 21km length of my ride. Then in...

Yay!!! Received new improve 320W QIROLL QR-E PRO (looks different) Just received today for my second bike built. It looks very different from my first QR-E PRO in term of appearances and features. The package i bought is is QR-E PRO motor/friction roller unit only without battery (backend...

Yes, i apply tape without removing the motor. Just de-clutch it from tire contact. Its just 3 minutes work to put the tape. I don't have the link because my next door office sell this industrial floor tape so i don't have to order online. hehehe!

Yes, you need to press the motor hard to the tires, don't let it loose else it worn the tape in an instant. Not sure about normal MUTE motor but my PRO motor even at high press on the clutch it still running fast without load. My tire and roller still exposed to grit and mud but doesn't wear...

Yes, as seen over 2 years of conversation in this forum i've using that floor grip tape with zero problem. 100% success over various weather including rainy days. Regardless it won't wear your tires. Even yesterday my local bike shop looked at my rear tire says it looks like new even have been...