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Hello my friend: I can't read Vietnamese so I'm not sure what brand or kind of tape this is: Is this green tape a vinyl or rubber tape. Is there a name for it for example is it grip tape? I'd like to find it's equivalent on Amazon.com If you see a comparable product on there please let me...

Thanks so much for sharing what's the link to amazon or 3m for that same exact grip tape you use. I think I'll order a roll. is it this one: 3M Safety-Walk Heavy Duty Tread, Black, 1-in by 60-ft Roll, 7731 https://www.amazon.com/3M-Safety-Walk-Heavy-1-Inch-60-Foot/dp/B000BQKA3A?th=1 Do you...

Wow! 600-1200 miles on one piece of grip tape. That's just amazing. And you say you've been using it for 2 years! I just might give it a try my friend! Although it does look like sandpaper. I have Marathon 20" Schwalbe's on my ebike so they're pretty sturdy. I like that your grip tape...

Hello: Do I understand you use fabric tape instead of the friction roller tape that Qiroll sells? For me, the friction tape has always been the weak point of this system as it can degrade and come off after awhile and depending on how much your ride and over what kind of terrain, you may end...

Hi, Kouzou: I'm glad the Qiroll system is working out for you. As for the motor's durability, I understand it's virtually indestructible and should last for years. I actually went over a curb and it hit the motor and left a dent in it and it's still working perfectly. It's about a year now...

The tire will engage with the motor as long as the roller is touching the tire and moving in high power mode. It will give you a slight boost. To achieve a constant full boost you must constantly depress the power button, which is no big deal as the button can be positioned conveniently...

The qiroll is VERY quiet...it isn't till the rubber friction tape begins to come off that it makes noise as it hits the motor when it revolves. The friction tape is rated to last anywhere from 300 miles and up to 400. That's the weak point of this system. I have no double the pro model is...

I didn't even know they came out with a 320W version. Thanks for telling me. Because of all the fires and cold weather I have not been riding as much. My review stands as it is and I stand by it. It's a wonderful power assist. If the 320w version is even more powerful I'm for it! Although...

Hi, Good question and the best person to ask that would be the one that sells the kits on ebay as he speaks Chinese and English and can give you an answer directly from the manufacturers of the motor. Search 'Qiroll electric bicycle kit' on ebay and contact the seller. BTW, is the purpose...

Hello, You're welcome. Around where I bike there are tons and tons of electric bikes. You know those big fat tire bike with the powerful electric engines that go 30-40mph. Those are just too fast! I don't want to go 30-40mph. In truth, I don't even want to go 20mph. 12-15mph is a good...

UPDATE... After 2 months of use, I have found the weakest point of this bicycle kit - the friction tape that comes into contact with the tire. The tape has an expected life of about 400 miles on road use. Since I also ride some bicycle trails that are paved but have occasional spots of...

Thanks...yes I am having fun with it. The pressure of the roller against the tire is important so that there is constant contact between tire and roller and hence the most power transfer. The throttle could be better designed with a light indicator that shows you what mode (eco/power/sleep)...

(By a bicyclist with a common man's (not an engineer's or bicycle tech's) POV regarding bicycles and motors used to assist bicycling. In other words: Press button - how fast can it go and for how long, and will it take me up that damn hill without too much effort on my part.) I was looking...

Hi, Harry: Thanks for replying. I've read a review of this Qiroll kit on Alieexpress and it appears to be pretty weak and when no pedal assistance, it might go 8-10mph. Maybe that's enough for my purposes to get up that hill, I have a moneyback guarantee so I might take a chance. Also...

Hi, I realize this is an old thread but I couldn't help but jump in. I am a senior and was looking for a small folding bicycle that would be light and yet ride like a full size bike and be easily collapsible to put in the trunk. (I have a Honda Civic and they have really small trunks!). I...

Hello Everyone: I have a folding 20" worksman bicycle, 7 speed internal shimano, and it's great for those under 7 mile rides. However there is a hill or 2 that make that a bit difficult. All I wanted was some assistance to tackle those hills. I didn't want a heavy front wheel hub motor kit...