Asus Bike Booster
asus.com
asus.com
They generally:
* Wear tires surprisingly quickly
* Absolutely suck in any form of weather or terrain condition (dirt, rain, etc.)
* Have ~20% less efficiency than any other drive form.
But, they are easy, and they do work.
That being said, having driven electric bikes for a while, here in France they're ridiculously limited in speed and power. 25km/h limit on flat land usually makes sense (except on long straight lines), but when you get climbing even slightly you get down to ~10km/h and have to provide more effort. I guess that's where the 750/1250W 70Nm unrestrained motor comes in handy, and if you live in a place with lots of small hills the choice is either that kind of motor or a car, not the 1000€-total Decathlon/Carrefour electric bike.
However bimotal is not that nice - adding a motor to rear triangle alters weight distribution and adds unsprung weight. Also unlike actual nice MTB e-bikes it cannot use chain/casssete for gearing, so gearing is fixed at the factory. If you’re used to nice bikes you will want your ebike to be dialed in just right.
One place where it makes sense is as an alternative to shuttling on forest roads / lifts for downhill-focused riding. F you’re going strictly downhill you can move the motor to the backpack after finishing the climb to reduce unsprung weight. This opens up a large number of trails where forest roads are blocked to car traffic. It also allows dh riding on trail where motor bikes are prohibited.
How nice should one's bike be that you'd rather turn it into a mediocre ebike for the price of buying a good ebike?
A proper e-bike needs to be designed as an e-bike from the beginning.
Expensive as f though. Also the gear-thingy looks proprietary (=expensive).
It was so bad that the rear wheel ended up getting bigger at the end of the race, as it picked up rubber deposited by the front wheel!
Keep it mind it was custom bikes though, the front tire just had to finish the race, they used a roller made of hard materials and knurled. I don't remember the reason, but it probably had to do with the fact their engines were quite a bit more powerful than traditional ones despite having the same displacement.
* you cannot install them on bikes with a rear rack. Here most city bikes have them.
Which makes me wonder about the cleaning after it rained..
Bikes are sold without mudguards, and the aftermarket ones are flimsy and don't fit very well. (The steel ones that came with my 1983 Schwinn frame being the exception).
"Who this is for" is the great un-answered question in American cycling. The reason is that our biggest untapped market is people who don't ride at all. The marketing looks like lifestyle marketing: Here's what's wrong with cycling and how we solve it. Here's what you will look like.
They will even steal a helmet off a parked bike and that's way cheaper. Just look how many helmets are left on bikes in different parts of different towns (because there is literally no advantage to take your helmet anywhere other than for theft protection)
*At the very least, you have to worry about Jackie Chan "borrowing" your wheels for a wacky chase scene. Based on my knowledge of Hong Kong cinema, this must happen at least once per week. Dude is a menace and a fiend.
A Skarper system [0] that drives through an adapted brake rotor sounds [1] like it is the way to go if really want [2] a well thought close to non-permanent conversion solution.
[1] https://road.cc/ebiketips/review_v2/skarper-ebike-drive-syst... .
[2] Compared to other conversion options they are currently expensive https://road.cc/ebiketips/content/advice/buyers-guide/best-e...
I recall a wheel-mounted rotor system from a few years back that did address theft, tire-wear, and weather, but it suffered from far too little torque and very limited battery life.
When i was young all bicycles came with mud guard (then called "fenders") front and rear. Now they seem to be anathema.
Every bike I rode w/o fenders put a stripe of mud up my back!
I'm not in the market for this, but I am in the market for making my cargo bike electric. Having to slow down at a traffic light and then start from zero absolutely sucks. It goes very slow, it is rough, and you won't have time. I'd use it just for that specific use-case.
It has three wheels. Two smaller ones at front, one back. As such, I'd prefer to install the motor on the back. We do have that speed limit of 26 km/hour (my current e-bike has it as well), but since more force is required, the kit would need to know this as well.
I got it second hand, same as my e-bike. Otherwise, these aren't affordable for me. 6k EUR for a cargo e-bike is just insane IMO.
[1] https://www.babboe.nl/media/akeneo_connector/media_files/b/a...
It says on the website it will fit hardtails but not full sus, and that it isn't recommended on knobby tyres due to performance which isn't ideal either.
I could be wrong on all of this but those are just the concerns coming to mind as another mountain biker.
I think the tyres would limit the power output most. Probably quite annoying to have no rear mudguard in anything but the driest conditions. You’d be spraying a lot of crap up at the motor (and probably your back).
Attaching and detaching it looks relatively simple, though - removing it for downhills doesn’t look arduous. You could probably 3d print a clip for the frame.
Given the likely reduced power, and that the spec seems to be saying ‘500w peak, but 250w is sensible’ - probably up to the user’s needs whether the hassle is worth the extra watts per kilo. For those without mobility issues or longterm injuries, it’s usually best to optimise the rider rather than the bike for that.
I feel like off-road climbing would necessitate really wide, sensitive speed variance that this motor is likely not great at supporting. It strikes me that you’d want more direct pedal feedback.
Really fun bike design problem.
That plus “already has a bike” is a massive market.
> That plus “already has a bike” is a massive market.
I imagine people who are elderly or differently abled would benefit more from an e-bike which is competitively priced to a bike + this device which will likely cost more than $1,000.
It’s a relatively big city geographically, and it’s really nice to be able to do 5 - 10 miles in jeans and a long-sleeved shirt and not arrive at a social event in a sweat. The tube is really hot (high 30s!) in the summer and generally quite unpleasant (fleas in the upholstery!). So cruising around in the sun is a really big urban niche for rentals. Those that do lots of miles per day seem more likely to own e-bikes - delivery guys who probably average 50+ miles/day will absolutely feel the difference in their legs, and need to control their tiredness for their safety.
There’s also the fact that many people have bike racks that are fine for traditional bikes but not the additional requirements necessary for some (most?) e-bikes such as weight and strength.
—-
Just because it doesn’t work for you and your specific worldview doesn’t mean others wouldn’t see value in it.
I ride an all-original 1970s steel-frame road bike, which seems like a prime candidate for this sort of product. I'm certain no sprocket-based design would fit it. I'd buy one of these if there was any way to lock it up.
Bicycles without fenders are typically used for specific recreational activities and those sure as heck do not want this clumsy thing attached.. If they want any form of electrical assistance they would want it a lot more sleek and efficient.
Other than that, it reminds me of the Spartamet, a Dutch piece of tech from 1985 which added a small combustion engine to an otherwise regular city bike.
I'm guessing you are European? Bicycles in the US almost never have fenders except for old timey / retro style models. Fenders fell out of style in the 1980s and never really returned. People who do have them usually install them themselves as an upgrade.
Speaking as an American who owns a basic beach cruiser bicycle and
- puts less than 50 miles on it per year
- has zero desire nor space for a full electric bike
- would never use their bike in any kind of inclement weather
- would never use their bike for anything other than leisure
I think it might be aimed towards my demographic specifically?
Like this thing seems pretty neat, just strap it to my bike and go? Sign me up.
Counterpoint: Portland OR, where I live — enormous bike city (in some rankings, the highest in the country) — and most have fenders due to the rainy climate much of the year.
The only reason most Americans outside NYC and Chicago ride a bike is leisure. Well, that or too many DUIs if we're being honest.
Ideally though if I had something like this it would encourage me to use my bicycle more.
Find a bicycle without mudguards and ride very slowly, or just ride on clean roads on a sunny days.
Obviously I'm talking about good electric bikes, with mid-mounted engines that detect pedaling strength. These feel great, unlike electric motors strapped to bikes, which feel like, well, electric motors strapped to bikes.
I am not sure if this is enough argument for having this instead of having a decent electric bike plus a normal bike, but it is an argument I guess.
There are cases one may not want to use an electric bike, eg when going out for a coffee, a drink etc and you may not want to carry the battery or risk theft, in contrast eg to biking for 40 minutes every day for work each way.
Or put a different way: I use electric Lime rental bikes all the time, it’s super fast and convenient. But I’m keenly aware they don’t give me any exercise, so I do want to go back to unpowered bikes as much as possible.
So they say there's a button on the thing itself which is not so much more practical. If they insist on wireless controls, the cost of a waterproof battery-powered button to stick on the handlebars sounds worth it.
The web page tells that the app can be used to switch between eco/normal mode but that seems to be the extent of it.
I was fine, but surprised he so carelessly and thoughtlessly sneaked up on me and tried to pass when I was already going fast downhill off of a bridge over a canal, on my legal eBike with 25 kph maximum assist.
Pedaling makes you pay attention and gives you direct control over the speed, and the assist drops out once you're going >25 kph. The asshole who hit me from behind probably didn't have time to find the throttle with his hand, and was never really in control of his bike or paying much attention up to when he freaked out and hit me.
What to do about fatbikes endangering our safety?
https://www.reddit.com/r/Netherlands/comments/1knza1c/what_t...
Fatbikes in the Netherlands 2026: What You Actually Need to Know
And if we want to limit cars - you know, the number one thing that actually kills a lot of people directly - then I don't think it helps artificially limiting alternatives like E-Bikes.
The only difference is with enforcing the rules, but there are solutions for that. Police on E-Bikes doing patrolling, mandatory number plates, E-Bike driving licence, .. not that I want all those things, but I much rather have that and not crippled bikes so cars stay the norm.
Feels like an overgeneralization. I have a perfectly slow Ride1Up Roadster V3. It's a PA bike with a throttle, but it's not a hot rod. Max speed with my weight is around 20MPH. I use the throttle to just get moving on inclines or at stops when I forgot to downshift.
That said, there are plenty of idiots around on bikes and cars.
Although in my experience when your bike/cargo is heavily loaded, a throttle is nice to get running, especially when stopped at a red light going uphill. Borrowed one like this and it was really useful. But i agree with your sentiment i see many people with throttled bikes going really fast and careless.
Is this what investors sell to the board about how they are using AI for greater efficiency? Just to waste consumers time even more?
I gave the answer a thumbs up, of course.
“Easy installation” with two screws seems like a benefit to customers except when they come back to their parked bike only to find their expensive mod also had a hidden feature: “easy uninstallation”.
You won't be able to remove the cassette and crankset with a multitool but a full campagolo super record EPS groupset MSRP is above $4000.
https://www.pitlock.de/en/set-sichert-2-innensechskantschrau...
From a cyclist’s perspective, this is fundamentally a stopgap product for “curious” customers dipping their toes into e-bikes. I don’t say that necessarily to criticize it. There’s a place for a product that someone can put on any old bike and see if they want to buy a more expensive long-term solution. But that doesn’t make it a product I’d recommend.
The tire wear problem is significant enough that there are heat resistant tires specifically for this type of drum application (designed for old-style indoor trainers, not for use on the road), because use on a drum will cause premature wear for normal road tires.
> ...rated IPX4 for water resistance ...suitable for use in light rain, but it should not be exposed to heavy rain or submerged in water.
A bike part you can't use in more than light rain seems like a pretty big drawback to me.
From experience I can say that it seems like a lot more common sense to simply replace the front wheel of your bike with a wheel containing an electric motor, rather than attaching whatever Asus is selling to your bike.
Is it the very first? I have no idea. But it's the first that I've run across, and I'm ecstatic that it exists.
Proprietary power bricks for anything are stone-age and should be shunned by the market. Maybe the ebike market will start doing so.
Only the 2021 spec for usb pd supports 36v (common bike battery voltage) and more than 100W delivery. My bosch ebike charges at 36v 4A.
I also think that a small usb c connector could easily break when used in an ebike. But this should not prevent standardizing a “bigger usb c” to be used in ebikes.
I can't even look at this device without cheering myself on for buying the complete package, rather than messing around with gizmos.
To elaborate a bit, friends of mine have had bikes with both cadence and torque sensors. And I've tried their bikes out. Agreeing with one friend, the bike with the cadence sensor seems to decide how fast it wants to go.
The bike with the torque sensor behaves a lot more like what you're used to from riding a conventional bike. After all, the control input to a conventional bike is torque.
I agree, but would like to point out that sometimes this might not be what you want. I had a bike with a front motor and a cadence sensor that I used for my commute for a few years, and was very happy with the motor just pulling me along while I lazily pushed the pedals with ~zero torque, barely enough to let the bike know I'm there. Basically like pressing a throttle. If all you want is to get from A to B comfortably, I've found this to be superior to a torque sensor, and it was also dirt cheap.
Well yes, because there’s no other input. It’s an on/off switch, the bike just knows that you’re pedaling. Usually there are multiple power levels you can switch between with a button, and those decide roughly how much of a push you get from the motor, but the power curves are all “hardcoded”. It doesn’t feel great for active riding, but it’s adequate for commuter bikes. Torque sensors are actually kind of expensive on their own.
But in any case wet tyres would have a negative impact on the ability of this device to efficiently drive the tyre.
The worst part was filing down the metal brake assembly so it didn't rub the hub motor on the rear wheel. I assume that was a very unique compatibility issue. Besides that, it was no more difficult than assembling a computer, just a bit of screwing and wrenching which any bike owner would be able to do (add in some spitting and cursing if you've never worked on a bike before, as I hadn't). Done in a weekend.
The second hardest part was figuring out what to buy. The most straightforward option is a full hub motor conversion kit, which should work for any commuter application. Trying to individually buy parts (likely from aliexpress) is cheaper but a hassle to coordinate, since there's no standard for ebike part compatibility. Then there's also the choice between PAS and torque-sensing, throttle, etc.
I ended up buying the minimal throttle conversion kit from Grintech (~$1200 total) and installing it on a used hardtail mountain bike I got for $200. The bike goes ~26mph on a 48V battery, 30mi range, works like a charm.
ASUS employee: "maybe not, but I hear that electric bikes are hot"
Summers ending, watch your bike dealers for deep discounts!
RAM prices.
Unfortunately ASUS brand is not getting better with these actions.
https://onlinebicyclemuseum.co.uk/tour/cyclemotors-motorcycl...
What about wireless shifting systems like Di2?
Is it really wireless?
The SRAM one is.
Where is it ebikes don't have a good reputation?
Where I'm living, they have a very good reputation, and very many have them.
The motor shuts off at 26km/h.
"Bikes" with 20-30mph speed are awesome, much healthier than gas vespas, and much cheaper and more sustainable than cars.
Many commuters on e-bikes are people who otherwise would be driving a car, so e-bikes that help people commute to work in a timely manner are critical. At the end of the day people are going to do the thing that is competitive on time and if we want to reduce the crush of car traffic around the country then we need the people who can bike to go out and do it.
The design doesn't work if you have a mud guard or pannier rack. Also unclear how easily it is detached. Do I have to take it off everytime to prevent casual thievery? How do I take it off to charge inside? Does it have anti-theft bricking?
I'm struggling to understand who the target market is.
It has a removable battery so it seems the mechanism is designed to be left on the bike.
[0]: https://www.digitaltrends.com/outdoors/asus-made-an-e-bike-c...
https://www.tcmit.org/english/research/car/car01
This is the last century version of the item that Asus is presenting here... but with a Gasoline engine.
The Engine is fixed on its own wheel and attached on the side of the bicycle.
This was apparently was a thing. It was used to motorize Japan at its industrialization debut.
On century later, electrification is now a thing and the same device is back with a battery. The loop is done.
PS: I do recommend the museum for anybody interested in industries and industrial processes.
*“VéloSoleX is a moped, or motorised bicycle, usually just referred to as 'Solex', […] originally created during World War II and mass-produced between 1946 and 1988, came in various iterations, while keeping the same concept of a motor with a roller resting on the front wheel of a bicycle”*
This powers the back wheel, though. I think that’s better for propulsion but it seems you’re giving up carrying stuff or a child on the back of the bicycle. Can’t even have a rack there with this contraption.
https://www.frandroid.com/marques/asus/3158393_meme-asus-se-...
* cadence sensor, looks like an optical sensor that has wireless connection to the main unit and/or app * app to adjust the mode * USB-C PD 100W - (improvement would be to allow for 2 inputs, charge at twice the speed, like new Anker Prime power bank) * removable/swappable batteries, love this * built in brake light, very nice
Does anyone know if that’s true and if that applies to conversions like this one?
About 5% more weight you need to slow down (80kg rider + 10kg bike + 4kg motor + battery)
Also that’s going to be more applicable with a mid drive or a hub motor than something like this.
3.7 kg (including battery)
This product takes advantage of advancements in lithium-ion battery technology driven by phones and cars, benefiting from improvements in both performance and cost at scale without requiring extensive additional research. Looking forward to trying it.
(I'm in the US and have been unimpressed with the kits available here. The Boost one looks compact and well designed).
https://wiki.lowtechlab.org/wiki/V%C3%A9lo_%C3%A0_assistance...
But less facetiously: there are large demographics that might ride bicycles more if it was slightly easier for them, including older people and people with mobility issues. I don’t have opinions particular to this product, but expanding the feasibility of cycling seems like a generally good thing to me.
there was another company named "bee" something that did these (gas as well 2 stroke)
and many early scooters, conversions, that all followed the friction style
I agree that rim brakes on an e-bike is extra bad.
Which made it seem neat and clean, but meant it had serious reliability issues, couldn't handle wet conditions[], wasn't really repairable, and was expensive compared to more reliable alternatives with better battery life, etc.
[] The manufacturer apparently stated that "[...bad bearings] can occur when the Wheel is repeatedly exposed to wet conditions. Due to the nature of the problem, this cannot be repaired": https://forums.electricbikereview.com/threads/known-issues-p...
Hub gears work quite well though don't they? In particular respect of being sealed and protected from the weather. Unclear why there's an opposite effect for this wheel.
People who don’t bicycle in North America won’t quite get it. It’s not exactly Taiwan. Theft is rampant and it’s societally sanctioned in most major cities.
The cycling guys won't buy it, they want the watts from their legs.
The commuters will just get an ebike eventually.
The getting started crowd will eventually become one of these 2 or stop riding a bike altogether. Since I didn't see how much this cost, if it cost as much as a commuter bike, I really don't know who would buy something like this.
This sounds like LLM-generated to me, but I find it difficult to point out why.
Seems like normal text to me, I don't think we need to scrutinize every sentence, now. Who cares if they used AI?
just replace the front wheel
I did that 20 years ago with a brushed motor and wow that thing had torque, could go up the steepest hills at speed no matter what I was carrying
The problem here is this device can be easily removed even from a locked bike, and it itself cannot be easily locked to the bike.
Come on, ASUS. You're a real company, not some kickstarter scam.
Me: when's the bike booster available to purchase?
ASUS AI: For the most accurate and up-to-date product release information, we recommend following our Facebook and Instagram channels. We share all our launch announcements there first, along with exciting product previews.
Hilarious advice given both Meta products are notorious for not showing everything from the accounts you follow.
If you want something like this, there are very similar items on Amazon, Alibaba, etc.[1]
[1] https://www.alibaba.com/product-detail/Mountain-City-Road-Bi...
A 4090's TDP!
- they have functional pedals (otherwise it's a motorcycle of some kind)
- they require pedal assist at all times and have some kind of power or speed limitation (anyone can use this, or at least it is least restricted)
- they have pedal assist available and have a different, higher power or speed limitation (usually reserved for 16+ or something similar)
- they have a power or speed limitation that makes them suitable for adults only but doesn't require a driver's license or inspection
There are efforts to regularize these, and also efforts to make things more chaotic. For example, New Jersey decided that all ebikes require a new ebike license and vehicle registration. Across the river in New York, no ebikes require a license or registration, and may be operated on any street which has a 30mph speed limit or less... but cities are allowed to make their own rules.
California's laws are mostly regarded by bicyclists as being sensible, at least in every discussion I've seen that didn't feature a twelve year old trying to convince his parents to buy him a 70mph electric motorcycle. See https://thecyclistchoice.com/resources/california-ebike-laws...
recent news: https://www.bbc.com/news/articles/c89nyk4pz74o
my costco has magnum melody
"Physical activity gains from active travel are similar in e-bikers and cyclists."
E-bikes make people who aren't fit enough to ride muscle powered bikes to start doing moderate exercise on local trips they would used cars for before.
Signed, former Cat 2 road racer
I suspect not. Even though ebikes are common now, I often hear this comment. Ebikes assist your pedaling; they don't pedal for you. (Well some can pedal for you but you learn quickly that if you let the motor do all the work you'll run the battery down and then you will have to do all the work pedaling a 65-lb bicycle home.)
Lots of people seem to think if a motor is present, then the motor is doing all the work. Ebikes are not motorcycles. What the motor actually does is make the hills less steep and less long. It's a lowpass filter for terrain.