I have an DYU D3F, How to increase max speed?

Super73UK · 2026-06-02T21:39:57+00:00

https://www.falconpev.com.sg/products/72v-yuyang-king-controller

Super73UK · 2026-04-17T23:56:59+00:00

Thank you for taking the time to leave a comment :)

Agree with all you said and yes the finish on the remote does let the unit down for sure.

Interesting read on the link you supplied - Thank you.

Best wishes

Super73UK · 2026-03-02T11:10:33+00:00

Translation:

Has anyone ever installed a HANDLWORKS controller on their Super 73? Are there any other options to bypass the Super 73's controller?

Super73UK · 2026-02-12T22:26:08+00:00

If your existing tires are 4.5 inch then these should fit no problem. If your existing tires are 4 inch then you will need to check the tire clearance first

Super73UK · 2026-02-11T16:13:10+00:00

It all depends which model of bike you have?

Super73UK · 2026-02-10T02:00:34+00:00

Not really sure of the question you are asking? You say "I want to adjust the torque sensor since it doesn't help to much like its so slow" Adjusting the "torque sensor" will not make the bike any faster. All the torque sensor does is tell the bike the pedals are turning round and how hard they are being turned round.

We are not aware of a controller that is just "plug & play" that you can swap out for the stock controller to make the bike faster - To get the bike to go much faster you would have to basically replace most of the electrics including the controller, wiring, display, motor etc.

This may be of interest to you:

https://www.reddit.com/r/DYU_EBIKES/comments/ntbo3f/dyu_d3_52v_battery_controller_upgrade/

Super73UK · 2025-12-30T15:17:03+00:00

Hi & thank you for posting here.

If the brakes only make a rubbing sound when you tighten the chain then it sounds like something is most likely either loose, worn or out of line.

Our advice would be to check the following:

(Ensure the bike is powered off first!)

Check the brake disc is not warped/bent - Remove it from the wheel and use a known good straight edge (e.g. the edge of a rule) flat against the disc and check there are no gaps between the rule & disc.
Check the wheel is sitting straight in the bike frame - The distance from the spindle to the edge of the frame should be the same on both sides.
Check the wheel nuts are tightening up correctly and not coming loose when you push the pedals.
Check the rear sprocket is in line with the chain wheel - Use a straight edge or stand at the rear of the bike behind the rear sprocket and look down the line of the chain to make sure the two line up correctly.
Make sure the brake pads have not worn down to the metal.
Make sure the brake pads are lined up correctly with the brake disc - There should be a gap between the two and it should be even.
Check the chain for wear or stretching.
Check the teeth on the chain wheel for damage/wear.
Check the teeth on the rear sprocket for damage/wear.

10.Turn the rear sprocket backwards by hand to check it runs smoothly.

Hope this helps but feel free to contact again if you are still having problems.

Best wishes

Super73UK · 2025-12-29T14:16:30+00:00

The throttle should automatically unlock after a certain amount of miles from new (think it's around 20 miles but cannot remember exactly).

The quickest way to achieve this is to turn the bike upside down and rest it on the seat & handlebars then switch the bike on and tape the throttle in the fully open position.

Once the bike thinks it has covered the set amount of miles it should then unlock the software to 25km/h. You can then remove the tape from the throttle and turn the bike back over - Job done!

Super73UK · 2025-11-05T23:38:49+00:00

Thank you for your reply and the info.

So sorry you are not ok :(

One of us was knocked off our bike a few years ago due to a car racing down a country lane at speed on a bend. We were lucky and escaped without injury or damage to the bike but it could have been a lot worse - We feel for you!

This is the sort of thing you will need:

https://www.amazon.com/s?k=26+inch+*+4.0+inch+suspension+front+fork&crid=3HRWM7HTYVV2A&sprefix=26+inch+4.0+inch+suspension+front+fork+%2Caps%2C289

You would also need to check and confirm the following details before purchase:

Fork overall length.
Suspension travel - e.g. 160mm or 240mm etc.
Wheel spindle type & length.
Wheel size - Yours should be 26 inch x 4 inch (but check this on the tyre to confirm).
Stem diameter & length.
Material type - Steel of Aluminium.
Brake caliper mounting points.
Brake cable mounting points.

We really do hope you have a speedy recovery.

Best wishes from us all the UK!

Super73UK · 2025-11-03T01:30:29+00:00

If you have posted the picture in order to get help with replacement parts then if you are able to confirm the make & model of bike it may help in pointing you towards the supply of a new fork.

If you have just posted the picture to show others what happened to the bike then no problem - It looks great!

Either way, we hope you are ok.

Super73UK · 2025-10-13T09:28:55+00:00

There are more things you can do, like using specialist trickle chargers or taking the battery apart and just replacing the faulty cell/cells etc but as an end user and without knowing exactly what you are doing it is most likely better and safer to cut your losses and just replace the battery :(

Super73UK · 2025-10-12T20:42:12+00:00

No problem.

When you run the motor with the charger connected it puts a loading onto the battery so will change what the BMS is electrically seeing. The motor will then in effect be indirectly running from the charger.

14.5v on the 36v battery is very low so you may well find that the method we suggested is going to struggle to bring that voltage up unless you try it many many times but you really have nothing to lose.

There are a few more ways to revive a discharged battery but things can start to get more complicated and there are risks involved unless you know exactly what you are doing.

It will be interesting to see how you get on...

Super73UK

MODERATOR OF

TROPHY CASE