Search found 7276 matches

by MadRhino
May 01 2021 5:38pm
Forum: EBike General Discussion
Topic: Where can I get the type of xt60 connectors that don't melt (fake/real?)
Replies: 8
Views: 312

Re: Where can I get the type of xt60 connectors that don't melt (fake/real?)

What size of bullet connectors & PP do you use? Those from Hobbyking are genuine, the XT90 that I have purchased at least. But still, I don’t like them. I prefer the big gold bullets to assemble lipo bricks, and big Andersons for power and phase connections. The smallest I ever use are 5.5mm go...
by MadRhino
May 01 2021 1:58pm
Forum: EBike General Discussion
Topic: Advice on Donor bike for rear hub conversion - Downhill Full Susp
Replies: 11
Views: 347

Re: Advice on Donor bike for rear hub conversion - Downhill Full Susp

Another, more expansive solution, is to cut and weld the alu in order to make a mount for through axle dropout plates. This kind: DB86DF90-AE35-4F77-95DC-83CFFE8D9C68.jpeg 637A5B59-5B10-4ED2-9996-F9EC4F7F0148.jpeg With the contours of the frame the OP is using, it looks like the cut and weld would ...
by MadRhino
May 01 2021 11:31am
Forum: EBike General Discussion
Topic: Advice on Donor bike for rear hub conversion - Downhill Full Susp
Replies: 11
Views: 347

Re: Advice on Donor bike for rear hub conversion - Downhill Full Susp

Powerful ebikes require custom dropouts anyway. We couldn’t care less about through axle since we need to cut them, or use them as part of the mount for custom dropout plates. It looks a bit challenging with this frame, as far as easy ways to mount the plates, but if not, it would be nice to see ho...
by MadRhino
Apr 30 2021 11:59pm
Forum: EBike General Discussion
Topic: Where can I get the type of xt60 connectors that don't melt (fake/real?)
Replies: 8
Views: 312

Re: Where can I get the type of xt60 connectors that don't melt (fake/real?)

Those from Hobbyking are genuine, the XT90 that I have purchased at least. But still, I don’t like them. I prefer the big gold bullets to assemble lipo bricks, and big Andersons for power and phase connections.
by MadRhino
Apr 30 2021 10:28pm
Forum: EBike General Discussion
Topic: Advice on Donor bike for rear hub conversion - Downhill Full Susp
Replies: 11
Views: 347

Re: Advice on Donor bike for rear hub conversion - Downhill Full Susp

The thru axle design won't work with a hub motor. Just every bike that I have built in the last 12 years were through axle, all of them built with big DD hub motors fed high power. Through axle is a standard in DH bikes for a long time. Powerful ebikes require custom dropouts anyway. We couldn’t ca...
by MadRhino
Apr 30 2021 7:54am
Forum: EBike General Discussion
Topic: Best place to buy Ebike frame in EU?
Replies: 2
Views: 183

Re: Best place to buy Ebike frame in EU?

Chinese Enduro frame, or other Chinese box frames, are not expansive. Their average price is closer to 400$ than 4k. They are not commonly available in Europe or America because there is no interesting profit to make by stocking them. Some are western made, more expansive of course, and usually bett...
by MadRhino
Apr 30 2021 7:36am
Forum: Vendor Relations Corner
Topic: EM3ev WARNING - abysmal customer support.
Replies: 50
Views: 1633

Re: EM3ev - Not what I expected. Help needed.

No matter how reliable that sellers use to be, nobody can be sure that everything is going to be fine when you buy online from a foreign country. When you buy in China, it is normal to receive documentation in Chinese, or none at all. It is common to experience shipping delays and sometimes, transpo...
by MadRhino
Apr 26 2021 7:27pm
Forum: EBike General Discussion
Topic: Just license it as a motorcycle?
Replies: 15
Views: 528

Re: Just license it as a motorcycle?

I believe you’d have a hard time licencing a DIY ebike almost anywhere. It would make it easy if it was built on a moped frame that is licenced already. Anyway, what matters most is how you ride, not the power it has. The police are targeting those who behave illegally.
by MadRhino
Apr 26 2021 10:18am
Forum: EBike General Discussion
Topic: Rear shock question
Replies: 4
Views: 236

Re: Rear shock question

Compression need to be set to sag 40% with rider on the bike. This means that an 8 inch travel suspension has to go down about 3 inches when you are in riding position on the bike with all the equipment and luggage that you will be riding with. Rebound control need to keep the wheel on the ground wh...
by MadRhino
Apr 25 2021 1:02pm
Forum: EBike General Discussion
Topic: 27.5” front 26” rear - Wheelbuilding
Replies: 111
Views: 3237

Re: 27.5” front 26” rear - Wheelbuilding

... I mainly do urban riding so that’s why I went with a slick-ish tire. I’m actually quite surprised how well these tires grip on mountain bike trails, well dry conditions only. On dry hard pack, slicks are fast and fun. But, some trail sections are taking longer to dry, wood bridges notably, and ...
by MadRhino
Apr 23 2021 2:24pm
Forum: EBike General Discussion
Topic: 36V battery less than a month old looks charged but no power?
Replies: 2
Views: 145

Re: 36V battery less than a month old looks charged but no power?

Yep. You need a multimeter, and ideally but not mandatory, an ebike tester. First you need to know if there is proper voltage at controller input, then if there is output on the 5v circuit. Those are the minimal conditions, after which you can test controls (switch, throttle, ebrakes), halls and pha...
by MadRhino
Apr 10 2021 5:05pm
Forum: EBike General Discussion
Topic: Last Piece of the Puzzle
Replies: 5
Views: 268

Re: Last Piece of the Puzzle

Pulling out a stucked seat post is not much of a problem. Use a slide hammer puller. You can make your own, or rent one. If the frame is steel you can heat it, but don’t if it is alu. Use Gunk penetrating oil, pour a few ounces into the seat post then rest the bike upside down overnight. The hammer ...
by MadRhino
Apr 06 2021 11:44am
Forum: EBike General Discussion
Topic: Dual Motor Build for an Ice Adventure Trike
Replies: 20
Views: 848

Re: Dual Motor Build for an Ice Adventure Trike

... I hadn't considered a hub in the back with the IGH mounted mid. I didn't realize that was possible Well, that sprung to mind first to me when thinking a tadpole trike. Keeping the front lightweight and to have the freedom to deal with balance by batteries placement. Huge power on the rear, I’d ...
by MadRhino
Apr 06 2021 10:07am
Forum: EBike General Discussion
Topic: Dual Motor Build for an Ice Adventure Trike
Replies: 20
Views: 848

Re: Dual Motor Build for an Ice Adventure Trike

I would power it with one big motor on the rear. The IGH mounted mid frame and a single freewheel on the motor. Just my own view of performance and handling.
by MadRhino
Apr 05 2021 5:04pm
Forum: EBike General Discussion
Topic: Are footpegs superior if you don't pedal?
Replies: 36
Views: 5626

Re: Are footpegs superior if you don't pedal?

Fitting foot pegs on crank arms is kind of weird. Platform pedals are much more comfortable. Using the BB shell to fit pegs is logical but very unlikely to place them at the ideal spot if it is a simple straight mount. My guess for most frames would be to fit them 4’’ lower than the BB shell, and it...
by MadRhino
Apr 05 2021 4:50pm
Forum: EBike General Discussion
Topic: Mechanical (non spoke) adapters
Replies: 3
Views: 227

Re: Mechanical (non spoke) adapters

No such adapter available. You’d have to make it. There are some adapters for non flanged motors though, hard to find but they exist. Still, you’d have to cut off the spoke flange and shave the rotor external size to exact dimension. I would lace it. I mean, not an easy lacing job but it can be done...
by MadRhino
Apr 05 2021 1:22pm
Forum: EBike General Discussion
Topic: Segway vs. Sur-ron?
Replies: 11
Views: 4826

Re: Segway vs. Sur-ron?

Segway is selling the Surron under their name. There are many variations of the same bike, design and upgrade components. BUT, it is a kids bike size and it is not available larger. Build your own starting with an old DH racing bike of a proper size. It will make a much better ride and you can build...
by MadRhino
Apr 04 2021 4:42pm
Forum: EBike General Discussion
Topic: Need a 24-inch 36h rim that fits 24x3.0 tire.
Replies: 6
Views: 254

Re: Need a 24-inch 36h rim that fits 24x3.0 tire.

I like this one, that I ride on my city commuter. ERD 507, 57mm wide.

https://classic-cycle.com/all/1499/alu- ... atte?c=414
by MadRhino
Apr 03 2021 8:49am
Forum: EBike General Discussion
Topic: Rear derailleur cable attachment lever arm hits hub motor gears 3-6 on six speed freewheel.
Replies: 12
Views: 412

Re: Rear derailleur cable attachment lever arm hits hub motor gears 3-6 on six speed freewheel.

Different design derailleur would fix it. I never saw that one before here... The long cage derailer is for the extra large low gear cog, which IMO is totally useless with a motor. It is making a fragile shifting range with a big chain length difference that is hard to tune, and does detune quickly...
by MadRhino
Apr 02 2021 11:42pm
Forum: EBike General Discussion
Topic: Rear derailleur cable attachment lever arm hits hub motor gears 3-6 on six speed freewheel.
Replies: 12
Views: 412

Re: Rear derailleur cable attachment lever arm hits hub motor gears 3-6 on six speed freewheel.

I would solve the problem making a custom derailer hanger, if I would need all those gears. I really can’t see why you need the big ones.
by MadRhino
Apr 02 2021 6:03pm
Forum: EBike General Discussion
Topic: DIY handlebar shim ideas? Using 22.2mm Moto-x bars (same diameter as BMX) in my 31.8mm stem
Replies: 12
Views: 272

Re: DIY handlebar shim ideas? Using 22.2mm Moto-x bars (same diameter as BMX) in my 31.8mm stem

Stem/handlebar adapters are not expansive normally. For quite some time they were included with many stems and its is not uncommon to find some in junk boxes at bike shops. On Aliexpress they are 2$.
by MadRhino
Mar 31 2021 6:08pm
Forum: EBike General Discussion
Topic: Where to find brushed hub motors nowadays?
Replies: 12
Views: 484

Re: Where to find brushed hub motors nowadays?

Well, actually it would be pretty difficult to find brushed hub motors that are readily available today. Heinzmann still makes one, and a good one for what matters, but it is more expansive than brushless hubs and they won’t sell them by the units. I don’t know the minimal order but I suspect you'd ...
by MadRhino
Mar 31 2021 5:54pm
Forum: EBike General Discussion
Topic: Can you correct IGH chainline offset issues by dishing wheels differently?
Replies: 5
Views: 326

Re: Can you correct IGH chainline offset issues by dishing wheels differently?

This is only possible if the frame dropout width is wider than the hub. Then you can place the hub at the extreme drive side, space the other side with washers and dish the wheel to center it.
by MadRhino
Mar 31 2021 5:32pm
Forum: EBike General Discussion
Topic: 27.5” front 26” rear - Wheelbuilding
Replies: 111
Views: 3237

Re: 27.5” front 26” rear - Wheelbuilding

The simulator is not giving reality numbers in that particular case. In the mountain practical usage, the larger wheel won’t give better top speed unless you feed the motor much higher power. Using the same controller and battery, the larger wheel is likely to be a tad slower top speed in mountain t...
by MadRhino
Mar 31 2021 5:22pm
Forum: EBike General Discussion
Topic: First build and battery seems to die too quick.
Replies: 43
Views: 1462

Re: First build and battery seems to die too quick.

Bikes are not like cars. There is a very limited space and size available to build a good bike . That is why high density battery chemistries are normally preferred. Horses for courses .... It depends on what one wants in an E-Bike. I note that one of the bikes in you signature is capable of 50MPH ...