Video Summary

Packaging and Design

• The packaging of the Isinwheel D4 e-bike is impressive, with every part of the bike well-protected. This is even better than what is seen with more expensive e-bikes.
• The bike comes with a bike pump, adding value to the overall package.
• The D4 is a fat tire folding e-bike, available in one size and one color.
• It weighs 66 pounds and has a payload capacity of 330 pounds.
• The ideal rider height is between five three and six three.

“The packaging of this bike when it came was amazing… every part of this bike was protected.”

Specifications and Performance

• The D4 is a Class 2 e-bike that can reach speeds of up to 20 miles per hour using a half twist throttle or pedal assist. It can also be unlocked to a Class 3 bike for higher speeds.
• The bike claims to have a range of 39 to 43 miles using only the throttle and up to 55 miles using pedal assist.
• It features a 48-volt 500 watt rear hub motor, with peak power of 750 watts and approximately 60 newton meters of torque.
• The transmission is a standard seven-speed Shimano system with a Shimano attorney derailleur and a derailer guard.
• Stopping power is provided by a mechanical brake system with 160 millimeter rotors on the front and rear.
• The battery is a 48 volt 15 amp 720 watt hour battery with UL certification and an intelligent charging system.
• The bike also comes with adjustable front suspension, puncture-resistant 20 by 4 inch fat tires, plastic fenders, a rear rack, and foldable pedals.

“This is a Class 2 e-bike which will take you up to 20 miles an hour via the half twist throttle or using pedal assist… The D4 will do 39 to 43 miles just using the throttle only or up to 55 miles using just pedal assist.”

Features and Controls

• The D4 features an adjustable front suspension with 89 millimeters of play.
• It has a black and white display that provides information on current speed, battery percentage, pedal assist levels, and more.
• The bike has five levels of pedal assist that can be adjusted using an up and down button.
• The right-hand side features a twist throttle, Shimano thumb shifter, and a rear brake lever.
• The bike also comes with a headlight, horn, brake lights, and a quick release seat post.
• Folding the bike is slightly different from other models, with the need to fold the stem and frame separately.

“The D4 features an adjustable front suspension… The bike has five levels of pedal assist… Folding this bike is a little bit different than some of the other ones that I’ve done.”

Road Test and Performance

• The padded seat provides extra cushioning, but it may feel wide when pedaling.
• The bike is easy to pedal without assistance, reaching a speed of around eight miles per hour.
• In throttle-only mode with pedal assist level one, the average speed is around eight miles per hour.
• Increasing the pedal assist level to two, the speed reaches 11.9 miles per hour.
• Pedal assist level three reaches 14 miles per hour, while level four achieves 17.3 miles per hour.
• Pedal assist level five is not mentioned.

“I have dropped the bike into zero pedal assist to see how easy it is to pedal without any assistance or help… The throttle test on pedal assist one takes us at an average of eight miles an hour… Pedal assist level two is taking us right under 12 miles an hour… Pedal assist level three is going to take you at 14 miles an hour… Pedal assist level four… 17.3 miles an hour.”

Performance Test

• The bike went from a class two to a class three.
• It reached a speed of 25 miles per hour in throttle-only mode.
• The pedal assist test showed speeds ranging from 9 to 22 miles per hour.

“We’re really getting the juice now.”

Sizing and Adjustability

• The seat and stem can be adjusted to accommodate riders of different heights.
• The seat post does not have markings, but it can be extended to the maximum height.
• The seat clamp may need to be tightened to prevent movement.

“The seat as low as it can possibly be… for your five foot three person… for your six foot three person… there it is for your six foot three person.”

Build and Durability

• The bike feels solid and well-built.
• No rattling or major issues during the test.
• The frame came unhooked at one point, but it may be a one-off issue.

“This bike is solid… it does feel like it’s built well.”

Hill Test and Power

• The bike had no issues going uphill in pedal assist level five.
• It provided enough power to handle different angles and heights of the hill.

“This budget bike will give you that kind of power… you will have no issue dealing with hills.”

Speedometer and Acceleration Test

• The speedometer on the bike display was slightly off.
• The bike reached a speed of 21 miles per hour while indicating 18.8.
• The bike’s acceleration was quick during the test.

“The speedometer is off… we’re really doing 21 miles an hour.”

Throttle vs. Pedal Assist Test

• The bike performed well in both throttle-only and pedal assist modes.
• The bike handled bumps and took off quickly in both tests.

“This bike has taken those bumps rather well… that was quick.”

Quick pickup and liking the bike

• The reviewer mentions that the bike has quick pickup and they are enjoying it.
• They are pleased with the performance of the bike so far.

“Got quick pickup, it really does. I’m liking that.”

Strava and mileage considerations

• The reviewer sets up Strava for tracking their ride.
• They mention that the bike’s battery meter is currently inaccurate, but they are not sure how much the actual mileage will affect the battery level.

“I’m gonna set my Strava which I’ve totally forgot to do. This bike didn’t have any miles on it, so I was like alright well whatever the mileage is is what it would be for this battery, but I don’t think that’s going to be the case. This says we’ve done six miles so far.”

Brake test and issues with brakes and seat

• The reviewer is conducting a brake test to see how quickly the bike stops.
• They mention that the mechanical brakes take some time to stop fully and can pulse if not fully engaged.
• The seat keeps moving and is causing discomfort, which they plan to address later.

“We are here for the brake test. Well, I’ve had a pedal says five, we’re gonna go as fast as we can. I know those speedometers off, so we’re just going to go as fast as we can and see how quick we can make it stop. And then the seat keeps moving on me, so I’ll deal with that after.”

Battery fluctuation and concerns about distance

• The reviewer mentions fluctuation issues with the battery percentage.
• They are unsure about the actual distance they can cover due to these fluctuations.
• The temperature in Chicago is notably high, impacting battery usage.

“The battery power dropped down as low as 35, then it went to 40, then it went back to 50, now it shows it’s just sitting here we’re at 61. I’m not really sure how far we’re going to be able to go on this trip because I’m gonna have a hard time figuring out this whole voltage fluctuation that’s going on. It is like 75 to 80 degrees here in Chicago today, so we are getting every bit of the full use out of this battery.”

Performance and issues on the ride

• The bike performs well and feels solid without any rattling.
• The bike absorbs rough roads effectively.
• The front brake pulsates, which the reviewer dislikes.
• The seat keeps lowering, causing inconvenience.

“This bike does a really good job of absorbing all the rough roads here in Chicago. Although the seat is not ideal for pedaling, it is doing a really good job of just like all this roughness right here, totally comfy. This front brake pulses and not a fan of that. A bike like this should definitely have hydraulic brakes. I think any bike that goes over 20 miles an hour should have hydraulics.”

Battery power depletion and finishing the ride

• The battery power is fluctuating, and it is unclear how much distance the reviewer can cover.
• They plan to push the bike a bit further and then do laps near their house to gauge battery performance.

“Depending on what second that I look down at the display, we either have 30 percent battery left or we have nine. Since I’m pedaling, I need to raise it again. We’re in pedal assist five, we have it in…”

Performance and Battery Life

• The rider is in gear seven and maintains a speed of 11 miles per hour.
• The pulse of power keeps going back and forth.
• The bike’s throttle has been used for the entire ride so far.
• The bike claims to have a throttle-only range of 39 to 43 miles.
• However, the bike has not made it to 30 miles yet.
• The wide seat makes pedaling a bit difficult.
• The seat keeps lowering during the ride.

“I mean I have basically done throttle the entire time but they say that this bike can do 39 to 43 miles with throttle only and we haven’t made it 30. if this seat wasn’t so wide this would be a little bit easier to pedal but between the wide seat and the seat keep lowering on me.”

Display and Battery Issues

• The display shows the lowest battery level as five percent.
• The battery is flashing and showing an E06 code.
• The reviewer is unsure what the E06 code means.
• This is the bike’s first real trip, although it has been tested before.

“so it looks like five percent is the lowest you’re gonna get on this display. as you can see we’ll make hopefully you can see that the battery is flashing it’s giving me the e06 code which I can’t remember what that is but we’ll have to look it up and this was just on it’s first real real trip although I have run it through the ringer but you know what I run all the bikes through this same testing.”

Final Thoughts

• The pulse of power has become less frequent and almost none at all.
• The reviewer will provide final thoughts at home.

“you feel the pulse of power every now and again so it became it went from more frequent to less frequent to now almost none at all all right we’ll see you guys at the house where I will give you my final thoughts.”

Post-Ride Stats and Fixes

• Strava shows a distance of 28.63 miles, while the bike’s display shows 28 miles.
• The reviewer assumes they have actually ridden more than that.
• Some suggested fixes for the bike include adjusting the seat with a shim or using a permanent clamp.
• The reviewer is not a fan of the mechanical brakes and suggests upgrading to hydraulic calipers.

“Strava says we’ve done 28.63 miles the display on the bike shows that we’ve also done 28 miles I’m not really sure how both of those matched up considering that this is off so I’m assuming that we’ve done more than that… some of the things that I would fix on this bike… this seat as you know kept coming down on me and what I would do is one of two things I would either try a shim or I would get like one of the permanent clamps instead of this quick release one I would get the permanent to where you use an allen wrench and tighten it down and then you have to use an allen wrench to change it again also the brakes not a fan I’m not a fan of these mechanical brakes so I would take forty dollars and get the hydraulic calipers and put them on this bike.”

Likes and Dislikes

• The bike feels solid and handles smoothly.
• It easily goes up hills despite being a 500 watt bike.
• The battery has a capacity of 720, which is larger compared to other bikes.
• The reviewer likes the overall appearance of the bike.

“it was solid like we were powering through stuff and you saw how easily it went up that hill now this bike is only a 500 watt with a 750 peak of what of wattage power for the rear but this bike handled as if it was a 26 inch bike with a 750 watt motor starting off I do like the fact that the battery is 720 instead of a smaller size um I do like how it looks.”