Search found 6381 matches

by MadRhino
Jun 02 2020 6:59am
Forum: E-Bike General Discussion
Topic: Flux weakening and a qs205
Replies: 23
Views: 289

Re: Flux weakening and a qs205

DogDipstick wrote:
Jun 02 2020 1:17am
...
24s should be easy for me. I can fit it. I want a nice 50 mph +.
50 mph is an easy target. A top speed of 50 on 24s is a slow winding. But, a nice 50 mph is not so easy. It is the speed from which a bicycle need to be very well built and tuned to be a nice, safe ride.
by MadRhino
Jun 01 2020 6:42pm
Forum: E-Bike General Discussion
Topic: 1500w.. Minimum ah?
Replies: 18
Views: 286

Re: 1500w.. Minimum ah?

The seller did recommend a bigger battery, because he knows your choice of wheel (size and power) does require it to run good. Don’t try cutting/saving on battery size unless you buy it made with better cells and know for sure they will supply the current required.
by MadRhino
Jun 01 2020 6:26pm
Forum: E-Bike General Discussion
Topic: Flux weakening and a qs205
Replies: 23
Views: 289

Re: Flux weakening and a qs205

I ride the the h50v3 11.39kv in 24’’ wheel with 3’’ tire. Feed it 25+ kw acceleration bursts with 24s RC lipo. 86 lbs bike, 165 lbs rider, 70+ mph top speed. 2 years daily riding hard and fast, never did bust the 150c temp. No cooling means but air flow. You can’t feed it 10 kw continuous. First, yo...
by MadRhino
May 30 2020 5:16pm
Forum: E-Bike General Discussion
Topic: Cable disc brakes: Road vs MTB
Replies: 5
Views: 100

Re: Cable disc brakes: Road vs MTB

Mounts are standard of 2 types: post mount and IS mount. Adapters are common from IS to post. Most frames and forks are IS brake mount. Mechanical disc brakes are low braking power, and require more frequent maintenance because of cable stretching or breaking. Hydro brakes can be operated with one f...
by MadRhino
May 29 2020 11:36pm
Forum: E-Bike General Discussion
Topic: Quiet motor advice for low top speed but high torque
Replies: 24
Views: 2859

Re: Quiet motor advice for low top speed but high torque

...one of the best low power kits out there. Check this thread: https://endless-sphere.com/forums/viewtopic.php?f=3&t=58490&hilit=xongda Well, it is a long thread to read, but if you do... You will notice that many have had problems with it, and lots of them are using another motor today. For this,...
by MadRhino
May 29 2020 6:48pm
Forum: E-Bike General Discussion
Topic: Stealth Bomber type electric enduro purchase
Replies: 28
Views: 754

Re: Stealth Bomber type electric enduro purchase

‘’ The dnm’s can’t be all that bad if they are standard on $10,000 b-52 that everyone seems to love... what do you think? ‘’ What I think? Sure you want to know? That is where they make the profit. Why would they sell you a bike with a 650$ shock if you can’t tell the difference with a 119$ Chinese ...
by MadRhino
May 29 2020 5:40pm
Forum: E-Bike General Discussion
Topic: Favourite high power hub motor?
Replies: 52
Views: 4904

Re: Favourite high power hub motor?

Nice and thanks....IMO some people forget that you need more battery when you go to a more powerful motor, well if you want to ride for very long anyway :lol: . The more power, the faster you ride, the better and bigger battery you need. Not only the battery, but just every component on your bike n...
by MadRhino
May 29 2020 12:16pm
Forum: E-Bike General Discussion
Topic: Favourite high power hub motor?
Replies: 52
Views: 4904

Re: Favourite high power hub motor?

I am using Turnigy Graphene RC lipo. How I mount them on the DH frames was described many times before, so I just copy: « I like frame bags, but not the triangle bags for they don’t fit on DH frames. I use top and down tube bags from Willier, small saddle bags from China, seat post bags and front ba...
by MadRhino
May 29 2020 12:07pm
Forum: E-Bike General Discussion
Topic: 1500w.. Minimum ah?
Replies: 18
Views: 286

Re: 1500w.. Minimum ah?

Higher voltage will make faster speed, and will not change Amp unless it is set lower in the controller program. So you would have more speed and more power, because 40 A at 52 v does make more watts. If the controller is programmable, you could set lower Amps and limit the current, what you could d...
by MadRhino
May 29 2020 9:04am
Forum: E-Bike General Discussion
Topic: 1500w.. Minimum ah?
Replies: 18
Views: 286

Re: 1500w.. Minimum ah?

This is about battery c rate. High C-rate batteries can discharge high Amps even when they are low capacity. For a battery that has a discharge c rate of 1, it does have to be 40 A/h capacity to supply 40 A discharge. If its c rate is 10, then it could be only 4 A/h capacity and supply 40 A. Then, y...
by MadRhino
May 28 2020 11:16pm
Forum: E-Bike General Discussion
Topic: Lime Bike battery fire
Replies: 54
Views: 3768

Re: Lime Bike battery fire

In Montréal they were called Jump. From UBER that had a licence to rent them in the city. This springtime they had not reappeared. In the news today: Someone have seen hundreds of them in a scrapyard 30km from Montreal. The scrapyard operator said he couldn't sell any of them because he had a contra...
by MadRhino
May 28 2020 9:59pm
Forum: E-Bike General Discussion
Topic: Want to build something comfortable, but issues with local bike path 'style'
Replies: 26
Views: 399

Re: Want to build something comfortable, but issues with local bike path 'style'

Of course. Market law, is to sell as high as customers are willing to pay, and to try getting them to pay a little more everytime. Those profits of the bike industry had created some absurd developments, and some good too. Still, the price goes down dramatically when people stop buying. One month ag...
by MadRhino
May 28 2020 7:15pm
Forum: E-Bike General Discussion
Topic: Want to build something comfortable, but issues with local bike path 'style'
Replies: 26
Views: 399

Re: Want to build something comfortable, but issues with local bike path 'style'

a few more: Semi recumbent 6 Giant Revive comfort Ebike.JPG We had one exactly like this here, Giant Revive. I did ride it once. It does have rear suspension and adjustable steering angle and height. Easy to build since it has horizontal dropouts. Not a bad idea from the start, but the riding feel ...
by MadRhino
May 28 2020 7:03pm
Forum: E-Bike General Discussion
Topic: Would like to make an eTrike less prone to tipping over
Replies: 39
Views: 600

Re: Would like to make an eTrike less prone to tipping over

I have seen the best ´trike’ in the form of a velomobile. It was riding on 2 wheels, but had a third that would deploy when stopping and lift automatically from 5 mph.
by MadRhino
May 28 2020 6:57pm
Forum: E-Bike General Discussion
Topic: Favourite high power hub motor?
Replies: 52
Views: 4904

Re: Favourite high power hub motor?

Of course there is a market for a powerful, reliable geared hub. Those that are available yet are toys, even the best of them can’t be fed much power and strip in a week if you beat them.
by MadRhino
May 28 2020 6:46pm
Forum: E-Bike General Discussion
Topic: Mid drive DIY frames?
Replies: 9
Views: 253

Re: Mid drive DIY frames?

You can buy the 3 dolphin case sizes empty, and fill them with your own battery. I like frame bags, but not the triangle bags for they don’t fit on DH frames. I use top and down tube bags from Willier, small saddle bags from China, seat post bags and front bags (fork mount) from Axiom. Together, the...
by MadRhino
May 28 2020 3:19pm
Forum: E-Bike General Discussion
Topic: Would like to make an eTrike less prone to tipping over
Replies: 39
Views: 600

Re: Would like to make an eTrike less prone to tipping over

When they don’t trip, they drift. Geometry decides which, and if it will be from the rear or the front.
by MadRhino
May 28 2020 3:08pm
Forum: E-Bike General Discussion
Topic: best ebike for 3K
Replies: 8
Views: 301

Re: best ebike for 3K

I don’t like their frame, nor their suspension.
Same battery capacity as a basic Sur-ron. Same power, which is low for a hub build. About half the torque, for 50 lbs heavier...
Not even coming close.
by MadRhino
May 27 2020 10:43pm
Forum: E-Bike General Discussion
Topic: best ebike for 3K
Replies: 8
Views: 301

Re: best ebike for 3K

Well. I build myself, but if I was going to start with a bike ready to ride, I’d want a good base that is worth upgrading later. I spend about 8000$ to build my own, and that is with a lot of used components. My main concern is the frame, for it is the real limit of how hard and fast that a bike can...
by MadRhino
May 27 2020 9:45pm
Forum: E-Bike General Discussion
Topic: best ebike for 3K
Replies: 8
Views: 301

Re: best ebike for 3K

I believe you can still find a Sur-ron in the 3k price range. The basic model was exactly 3000$ and 40 mph, when it was first offered in America. Good frame, lots of options to upgrade or customize.
by MadRhino
May 27 2020 9:15pm
Forum: E-Bike General Discussion
Topic: Tire slipping
Replies: 18
Views: 622

Re: Tire slipping

Solutions: Build tubeless, with a bicycle tubeless kit for your tire size. Add a foam insert, to make it virtually flat proof. Use a bead lock. There are some small enough for 2.5 bicycle tires. Check for the small plastic ones on Amazon. Grip It, automotive belt dressing. Or dish soap if you are no...
by MadRhino
May 27 2020 9:00pm
Forum: E-Bike General Discussion
Topic: Stealth Bomber type electric enduro purchase
Replies: 28
Views: 754

Re: Stealth Bomber type electric enduro purchase

It does help to improve safety, because a fast bike built with cheap components is dangerous for those who are expecting it to be safe for the task. It does help to warn newbies that when it does seem to good to be true, it isn’t. It does help to grow this forum with conscious builders and riders. O...
by MadRhino
May 27 2020 2:42pm
Forum: E-Bike General Discussion
Topic: Stealth Bomber type electric enduro purchase
Replies: 28
Views: 754

Re: Stealth Bomber type electric enduro purchase

‘’for a total of $2210’’ That is cheap. I don’t want to add to negative comments, only making sure that you have realistic expectations. 2000$ to me, is the cost of a good fork, or a good battery. The motor can be reliable to ride 70 mph and accelerate most motorcycles on a start, but nothing of the...
by MadRhino
May 27 2020 2:30pm
Forum: E-Bike General Discussion
Topic: Anyone modded an arrow type bike?
Replies: 7
Views: 101

Re: Anyone modded an arrow type bike?

There are many ebikes that had been named arrow over the years. So, which one is it? Cargo? Touring? Scooter?

And, if it doesn’t suit you anyway, why bother?
by MadRhino
May 27 2020 2:24pm
Forum: E-Bike General Discussion
Topic: Want to build something comfortable, but issues with local bike path 'style'
Replies: 26
Views: 399

Re: Want to build something comfortable, but issues with local bike path 'style'

You can build comfortable on a bike frame. It doesn’t have to be a trike or a bent. Check for chopper or bobber style, that many had built. Yet, none of them are readily available with suspension. That would require serious mods because comfort does not rely only on geometry. Suspension is also an i...