REVIEW: QR-E 250W ELECTRIC BOOSTER BICYCLE MOTOR AND B60i AND B70 BATTERY

[3dxl]

The Yamaha is 36v 250w nominal with up to 650w peak (I think). The trail I rode yesterday is mild railroad grade that I rode mostly level 1 or 2 with level 3 (of 4 levels) on a short steeper section because I don't want to stress my knee. I checked the bike display from yesterday's ride which was 44.2 miles with 68% battery capacity remaining in a 500wh battery. It was an out and back ride with probably less than 1000ft of climbing. I'm sure your Bafang is much more powerful but the Yamaha does pretty well. Post up your new Qiroll builds when you do them.

Where i live 250~650w still not enough to leverage my daily commute and that hill stuff i have to deal with, i need more power to match the flow of traffic. However for chill and relaxing scenic ride like yours that is good enough. 44.2miles with 500wh is really good mileage including under 1000ft climbing that power consumption equivalent complete touring mileage where i live around perimeter district. Btw 750w saved me from angry dog chase, lol!..but still i hate my heavy bafang.

 

[3dxl]

Updates: Wow! Received complete new replacement!
Finally i received the replacement unit to replace my old QR-E PRO (V1). They sent me a new V2 unit, a complete kit! Now that's an awesome product support for customer right there Thanks to Qiroll and Mr. Jason for keeping their customer happy even after products have been purchased 2 years ago. My fast white stallion (Merida 901) road bike is back in action.....yes it the fastest steed that killed V1. Hopefully V2 can handle it. Will post video how i install, test and stuff!

Photos:

 

[3dxl]

Yay! My white stallion is back on the road! Zooommmm away!
The PRO (V2) seem to perform well like the V1 on the first day today. Need a week to run-in/break-in the motor before i can see some optimal performance. Still, today was a fun exhilarating ride! Thank Qiroll for the replacement unit.

Video:

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https://twitter.com/i/web/status/1817909080264241562

 

[EMGX]

Sooner or later someone was bound to try this, so it might as well be me. Seems to work well although on clearly suboptimal tires.

 

[kevinmccune]

Where i live 250~650w still not enough to leverage my daily commute and that hill stuff i have to deal with, i need more power to match the flow of traffic. However for chill and relaxing scenic ride like yours that is good enough. 44.2miles with 500wh is really good mileage including under 1000ft climbing that power consumption equivalent complete touring mileage where i live around perimeter district. Btw 750w saved me from angry dog chase, lol!..but still i hate my heavy bafang.

can of 20 ft hornet spray should deter dogs(or bear spray)

 

[3dxl]

Sooner or later someone was bound to try this, so it might as well be me. Seems to work well although on clearly suboptimal tires.

Front wheel drive provide good off-road traction and stability, surprise you have huge amount of front for clearance to fit rear the fork.

can of 20 ft hornet spray should deter dogs(or bear spray)

I can't comment that, but i won't able to have leverage of time to stop and spray some dogs. Speed is my safe option.

Btw encountering rabid dog, mouth looks foamy:

Video:

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https://twitter.com/i/web/status/1818623875229638848

 

[3dxl]

QIROLL 320W QR-E PRO SETUP VIDEO.
Just published video how i setup my 320W QIROLL QR-E PRO, test and rides. Enjoy!

Video:

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[kevinmccune]

QIROLL 320W QR-E PRO SETUP VIDEO.
Just published video how i setup my 320W QIROLL QR-E PRO, test and rides. Enjoy!

Video:

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you did a double setup?like the mags

 

[EMGX]

Excellent videos 3dxl.
Qiroll needs to do a better job of sealing the drive unit from water/dust ingress, you shouldn't have to do that yourself. IMO USB-C jack would be better than their choice of USB micro.
I went for a ~10 mile fairly flat dusty gravel ride with the Qiroll on the front wheel. I didn't notice any difference in performance or handling vs installation on the rear wheel but unsurprisingly it did slip on the Schwalbe Billy Bonkers tire (I didn't buy them for use with Qiroll) in any setting other than auto clutch mode which still gives decent assist on the flats. I love the light weight but for my riding Qiroll isn't a good solution. I might list it for local sale to someone who has a more appropriate purpose for it such as yours. Sadly back to the Yamaha or maybe install my Tongsheng again on a bike even though such heavy bikes take away much of the fun of riding.

 

[3dxl]

you did a double setup?like the mags

Its a single aluminum attachment on the motor from the plate, not magnesium material i think.

Excellent videos 3dxl.
Qiroll needs to do a better job of sealing the drive unit from water/dust ingress, you shouldn't have to do that yourself. IMO USB-C jack would be better than their choice of USB micro.
I went for a ~10 mile fairly flat dusty gravel ride with the Qiroll on the front wheel. I didn't notice any difference in performance or handling vs installation on the rear wheel but unsurprisingly it did slip on the Schwalbe Billy Bonkers tire (I didn't buy them for use with Qiroll) in any setting other than auto clutch mode which still gives decent assist on the flats. I love the light weight but for my riding Qiroll isn't a good solution. I might list it for local sale to someone who has a more appropriate purpose for it such as yours. Sadly back to the Yamaha or maybe install my Tongsheng again on a bike even though such heavy bikes take away much of the fun of riding.

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Then definitely mid drive for you where you live, i think instead of selling off the Qiroll you can try do creative stuff like using it on skateboard or push scooter modification into electric. I'm still looking into folding bike project for Qiroll mods...still browsing second hand bike on local market.

 

[3dxl]

Review article: QIROLL Q-RE PRO - 320W E-bike
Finally published a written review about my experience with QR-E PRO.
For those who wants to read in details can visit my webpage here:

Tech review: QIROLL Q-RE PRO - 320W E-bike Kit - SupermotoXL Designs - Life, Designs, Hobbies

Welcome!. This website showcases several of my 3D design works, creation of 3D printed models, DIY advance aerial technologies, UAV, FPV, drones and R/C models.

www.supermotoxl.com

Enjoy reading.

 

[3dxl]

Enjoying daily chase!

Video:

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https://twitter.com/i/web/status/1821711837735612904

 

[3dxl]

Extra grip power!
I realized another advantages of friction roller; it helps warm up the tires and allow good grip and traction on the road. Via FLIR thermal imaging i can see the temperature increase around the radial. The same method where i warm up my RC car tyre to prep up for racing around the track. No wonder i felt more confident when doing sharp cornering and banking around the streets at high speed.

Photos:

 

[Somo]

Amazing information and reviews. I use a Batec Manual Front drive handbike, Batec wont sell parts to upgrade to an ebike, any comments if this system could work - it looks like it should? The Pro with the 300Wh battery Is perfect as I am allowed to fly with 300wh battery as a medical device. Looking forward to hearing your thoughts. Thanks