Search found 7140 matches

by MadRhino
Feb 27 2021 4:14pm
Forum: EBike General Discussion
Topic: Boxxbike Valkyrie : 12kw crank concentric mid drive with left hand motor drive
Replies: 44
Views: 3649

Re: Boxxbike Valkyrie : 12kw crank concentric mid drive with left hand motor drive

The method of reading the power applied to the crank is not an issue. There are many reliable, instant power monitoring devices today. The difference is in the controller software, because it is not where the info is coming from, but how it is treated and transformed into an intuitive result by the ...
by MadRhino
Feb 27 2021 11:02am
Forum: General Discussion
Topic: What defines a high end high quality e-bike frame?
Replies: 8
Views: 277

Re: What defines a high end high quality e-bike frame?

There are no high end ebike frames available yet. You can buy them only as fully built ebikes. Some of them will come available on the market sooner or later, but ask yourself if you will be willing to pay the price that major bike manufacturers are asking for their high end frames, that would range...
by MadRhino
Feb 24 2021 1:30pm
Forum: EBike General Discussion
Topic: White Smelly Goop
Replies: 6
Views: 176

Re: White Smelly Goop

They use that paste because it is cheap and never dries. They don’t care about the smell, when the paste that smells better is 4 times the cost. Silicon is not a good heat transfer material, can’t be applied as easily, and does smell even worse when it is applied.
by MadRhino
Feb 23 2021 3:50pm
Forum: EBike General Discussion
Topic: Sabvoton controller in a Surron stock
Replies: 1
Views: 81

Re: Sabvoton controller in a Surron stock

It is a very common 3 phase motor, thus can be driven with almost any ebike controllers out there, including very cheap ones. The only problem is the display/control functions communication with the controller. So yes, you can do it but the simple way might be to replace the display with one matchin...
by MadRhino
Feb 21 2021 3:11pm
Forum: EBike General Discussion
Topic: Help with an e-bike for my courier job
Replies: 20
Views: 524

Re: Help with an e-bike for my courier job

The mileage that courriers are doing would require charging during the day, if you want some speed. I would build a PAS ebike using high C rate RC lipo that can charge in 15 minutes. The combination of efficiency and fast charging should make it good for the task.
by MadRhino
Feb 20 2021 12:13pm
Forum: EBike General Discussion
Topic: Newbie rear hub drive Q's- how not to fry my motor
Replies: 14
Views: 363

Re: Newbie rear hub drive Q's- how not to fry my motor

You will do it twice as fast with the motor assistance, without any risk of overheating. Do it on motor power alone, it won’t be at risk as long as there is no trafic lights in the steepest section to make you stop and go.
by MadRhino
Feb 19 2021 5:12pm
Forum: EBike General Discussion
Topic: Newbie rear hub drive Q's- how not to fry my motor
Replies: 14
Views: 363

Re: Newbie rear hub drive Q's- how not to fry my motor

If the bike has disc brake, you could lace the motor in a smaller wheel to make a better climber. Geared hub motors can stand 130°C temp safely and will melt before 180°C. Motor temp, not casing temp. DD hubs can give a pretty good idea of temperature by checking the casing, but geared hubs can’t be...
by MadRhino
Feb 18 2021 12:39pm
Forum: EBike General Discussion
Topic: Newbie rear hub drive Q's- how not to fry my motor
Replies: 14
Views: 363

Re: Newbie rear hub drive Q's- how not to fry my motor

Paved roads are rarely very steep. The overheating danger is coming mostly from stop and go while climbing. A continuous climbing for half a mile is nothing dangerous, but low power would make some crank work necessary.
by MadRhino
Feb 15 2021 11:51pm
Forum: EBike General Discussion
Topic: Muxus 3,000 v3 3t rim brake 26in.
Replies: 4
Views: 180

Re: Muxus 3,000 v3 3t rim brake 26in.

Your post is a bit confusing. Motors today have disc mounts but nothing forces you to use it. So, motor brand and size are irrelevant. Fat bikes rim brakes are very uncommon. When fat bikes came up on the market, there was a large variety of disc brakes available already, some just as cheap as the c...
by MadRhino
Feb 15 2021 7:24pm
Forum: EBike General Discussion
Topic: 1000w throttled ebike that also pedals and looks stealthy?
Replies: 4
Views: 265

Re: 1000w throttled ebike that also pedals and looks stealthy?

The more power and range that an ebike has, the less it does look like a bicycle. I guess that if I would want a stealthy ebike with high capacity battery, I would hide them in panniers and/or backpack. Or, maybe I would build a long frame cargo bike, because it does make it easier to hide ebike com...
by MadRhino
Feb 15 2021 1:55pm
Forum: EBike General Discussion
Topic: Best material for battery impact shock absorption?
Replies: 31
Views: 2463

Re: Best material for battery impact shock absorption?

I use carbon fiber wafer sheets as inserts in battery bags lining.
by MadRhino
Feb 14 2021 1:37pm
Forum: EBike General Discussion
Topic: Need nice seat for e-MTB. Suggestions?
Replies: 10
Views: 280

Re: Need nice seat for e-MTB. Suggestions?

Few ebike riders like a leather saddle. Some do, mostly among those using PAS because pedalists like hard saddles. Then, one can’t try and judge the comfort of leather saddles, because they need many months to shape to the rider. This ‘breaking’ period can be shortened if you are willing to ride a w...
by MadRhino
Feb 14 2021 12:51pm
Forum: EBike General Discussion
Topic: YADEA YS500 Ebike - 25 km/hr speed limit
Replies: 1
Views: 106

Re: YADEA YS500 Ebike - 25 km/hr speed limit

Off the shelf 500w ebikes are made for 25 mph. Their controller and display are set for legal limits. Those that can be unlocked usually have an advanced parameters menu that requires a password from the manufacturer or dealer. Those that don’t have this option need to be tricked, most of the time r...
by MadRhino
Feb 13 2021 3:18pm
Forum: EBike General Discussion
Topic: Help with funky noise from the motor..video link attached
Replies: 7
Views: 199

Re: Help with funky noise from the motor..video link attached

Vibrations might have to do with the rotation speed required for the fault to happen. It is not impossible that your throttle can be the cause though, but only if it is set to regen on release. I mean, a throttle eventually can have some dead spots, and if the controller is set to regen on throttle ...
by MadRhino
Feb 13 2021 3:09pm
Forum: EBike General Discussion
Topic: Need nice seat for e-MTB. Suggestions?
Replies: 10
Views: 280

Re: Need nice seat for e-MTB. Suggestions?

Whatever is comfortable for you dude, kind of an individual thing... I suppose I could order up a couple of dozen different seats and ID that special "individual thing". ;-) But being that I dont have the cash or time, I though it prudent to ask around first to narrow things down a bit. S...
by MadRhino
Feb 13 2021 9:15am
Forum: EBike General Discussion
Topic: Help with funky noise from the motor..video link attached
Replies: 7
Views: 199

Re: Help with funky noise from the motor..video link attached

I can’t tell by hearing of course, but a hall wire intermittent failure was my first impression. But, it could be an intermittent short or connection failure on one of the phases and that, could fry your controller.
by MadRhino
Feb 13 2021 5:39am
Forum: EBike General Discussion
Topic: Help with funky noise from the motor..video link attached
Replies: 7
Views: 199

Re: Help with funky noise from the motor..video link attached

Check your wiring and connectors carefully, before you fry the controller. This motor has double hall set, try the other set. Check the wiring at axle exit (s). Check wire insulation integrity, rubs, kinks or cuts. Take off each connector from the housings to inspect. My guess is that you have an in...
by MadRhino
Feb 13 2021 5:19am
Forum: EBike General Discussion
Topic: ideal front fork for street: Speedway style leading axle?
Replies: 18
Views: 358

Re: ideal front fork for street: Speedway style leading axle?

Does not survive one crash. Getting loose and noisy in the linkage joints after one winter. It is a springer type, primitive suspension that is effectively working good for small bumps but can't stand any hits without damage and require constant maintenance to keep stiff and quiet. Sorry, that is my...
by MadRhino
Feb 13 2021 5:02am
Forum: EBike General Discussion
Topic: minimizing required maintenance - tips with or alternatives to mountain bike suspension systems?
Replies: 6
Views: 224

Re: minimizing required maintenance - tips with or alternatives to mountain bike suspension systems?

Plus, we put more use and abuse on ebikes than standard mountain bike parts are designed for. Sorry, can't let that go unchallenged. So you are saying street riding an Ebike is harder on suspension pieces than what serious MXB riders do?? Do you do 6 ft drop-offs on the street I had the impression ...
by MadRhino
Feb 12 2021 6:02pm
Forum: EBike General Discussion
Topic: Rear hub motor only spins when it's upside down
Replies: 4
Views: 202

Re: Rear hub motor only spins when it's upside down

Sensorless controllers are sometimes a bit tricky. Some are pedal first, meaning the wheel has to start moving before you apply throttle. Some have a learning mode, and need to be set by slowly moving the wheel forward while the learning mode is active. Then you remove the learning mode and it does ...
by MadRhino
Feb 12 2021 5:39pm
Forum: EBike General Discussion
Topic: ideal front fork for street: Speedway style leading axle?
Replies: 18
Views: 358

Re: ideal front fork for street: Speedway style leading axle?

Stiction does not affect how deep the suspension goes under weight, only how fast. Then, we adjust a suspension damper valve slower than its open state, because that is how it does reduce vibration and rebound effect. So, on all forks but the cheapest crap, the stiction is only a factor of stanchion...
by MadRhino
Feb 12 2021 2:52pm
Forum: EBike General Discussion
Topic: ideal front fork for street: Speedway style leading axle?
Replies: 18
Views: 358

Re: ideal front fork for street: Speedway style leading axle?

I have 11 lbs of RC lipo in a bag mounted on the top crown of my 6 lbs racing fork. It is an air cartridge fork, that didn’t need any mod and working/tuning perfect with that weight on. With any other type of fork, I’d have to change the spring weight. Some would require some mod. The rest of my bat...
by MadRhino
Feb 12 2021 1:21pm
Forum: EBike General Discussion
Topic: minimizing required maintenance - tips with or alternatives to mountain bike suspension systems?
Replies: 6
Views: 224

Re: minimizing required maintenance - tips with or alternatives to mountain bike suspension systems?

There is no magic in this world. And, don’t believe racing spec maintenance schedule, because they are for optimal racing requirements and very few riders are expecting such. But, cleaning suspension is everyday routine. Replace your bomber with a monster T and you have a fork for a lifetime with on...