Search found 6873 matches

by MadRhino
Dec 16 2011 8:34pm
Forum: E-Bike General Discussion
Topic: Is my bike frame disk brake compatible?
Replies: 31
Views: 2391

Re: Is my bike frame disk brake compatible?

...I should know b/c I flipped over the handlebars on more than one occasion as I was stupidly holding something in my right hand and only engaged the left lever. Or maybe you mean that both still need to be used: rear first, then followed by using the front brake? As a DH rider, I can tell you tha...
by MadRhino
Dec 15 2011 11:00pm
Forum: E-Bike Technical
Topic: controller to motor wiring problem
Replies: 7
Views: 878

Re: controller to motor wiring problem

More likely to be short inside the axle.
Unless the mod have been done already, this motor has this problem very often.
by MadRhino
Dec 15 2011 7:58pm
Forum: E-Bike Technical
Topic: *WANTED* technical support 4 design production EU Citybike!
Replies: 68
Views: 9029

Re: *WANTED* PARTICIPANTS for design new production E-bike!

Out of topic but...

Since Jochem was the name of a famous friesian horse, and I have many horses of the friesian breed here.
May I ask: Are you a horseman?

If it is just your real name, sorry for the association to a horse, wasn't meant to be rude. :wink:
by MadRhino
Dec 15 2011 7:40pm
Forum: E-Bike General Discussion
Topic: To build or not to build
Replies: 12
Views: 990

Re: To build or not to build

Drunkskunk wrote:...
You'll have better luck with a Trek 800 or 810 off craigslist. They are aluminum, but much stronger.
Personally, building a Trek I'd go for the Session 88 DH 2009. Price for a 2009 used frame should be good this winter, and this one is a very good ride. :twisted:
by MadRhino
Dec 15 2011 7:22pm
Forum: E-Bike General Discussion
Topic: Ebike reliability. How often do you break down?
Replies: 31
Views: 2497

Re: Ebike reliability. How often do you break down?

I had many failures at first: Dropouts, controllers, connectors, throttle... Now I can finally build a reliable system, proven by a few thousand Km of dirt riding and surviving many crashes in the mountain. I am back to (almost) normal DH racing bike maintenance and components wear, that is alot alr...
by MadRhino
Dec 15 2011 7:07pm
Forum: E-Bike General Discussion
Topic: Crystalyte HS 3540 72v
Replies: 57
Views: 6705

Re: Crystalyte 5304 72v

boppinbob wrote:I got the motor and parts from electricrider.com ...
Not likely to be a 5304 IMO, I think that you bought the H series Clyte.
by MadRhino
Dec 15 2011 4:57pm
Forum: E-Bike Technical
Topic: Regen sticks -SOLVED - Magura e-brake not for DOT4 oil
Replies: 26
Views: 2149

Re: Regen sticks -SOLVED - Magura e-brake not for DOT4 oil

I'll take it, I have Magura Gustav M on the rear for all my bikes. I have modded my hydro brake levers with switches so far, but I've been thinking about ordering those inline switches for a while. Your problems make for a good occasion to try one. Just check how much to ship to Montreal, Canada. If...
by MadRhino
Dec 15 2011 10:09am
Forum: E-Bike Technical
Topic: Regen sticks -SOLVED - Magura e-brake not for DOT4 oil
Replies: 26
Views: 2149

Re: Regen sticks sometimes / defective Magura e-brake switch

Anyone confirm that DOT4 oil can damage a system designed for mineral oil ? Yep, DOT4 brake fluid is corrosive. Braking systems that use mineral oil, were invented to prevent corrosion damage resulting from fluid spill. All Magura brakes use mineral oil. Different brake fluids are not interchangeab...
by MadRhino
Dec 15 2011 3:45am
Forum: E-Bike General Discussion
Topic: To build or not to build
Replies: 12
Views: 990

Re: To build or not to build

Alu dropouts will not stand the torque of a hub motor, you need to make torque plates. Those dropouts on your bike are easy to fit a bolt on torque plate, that you can cut from 1/4" steel with a grinder. Fit one on each side and ride with confidence.
by MadRhino
Dec 15 2011 3:31am
Forum: E-Bike General Discussion
Topic: Power Supply Warning
Replies: 12
Views: 776

Re: Power Supply Warning

Yep, I have 6 genuine Meanwell PSU here, and all of them are perfectly reliable.
by MadRhino
Dec 15 2011 3:11am
Forum: E-Bike General Discussion
Topic: Is my bike frame disk brake compatible?
Replies: 31
Views: 2391

Re: Is my bike frame disk brake compatible?

I heard from an earlier thread that mechanical disc is not that much better than v brakes, I have Avid BB5 mechanical and I don't think it stops that much better. Jerry Well, they are not so much more powerfull, but they brake in all weather conditions, and that is a big step up already. A good set...
by MadRhino
Dec 15 2011 1:16am
Forum: E-Bike General Discussion
Topic: Hub motor axle mounted in Downhill fork?
Replies: 22
Views: 3909

Re: Hub motor axle mounted in Downhill fork?

You can make steel plate dropouts that are clamped on the Fork lowers and bolted on the through axle holes with a bushing. So yes, it can be done, but the fork will never work fine with the weight and torque of a motor. My recommendation is to sell the fork and buy a helmet, if you want to have a mo...
by MadRhino
Dec 14 2011 3:44pm
Forum: E-Bike General Discussion
Topic: Is my bike frame disk brake compatible?
Replies: 31
Views: 2391

Re: Is my bike frame disk brake compatible?

You said it yourself: The front does dive. This happens because when braking, the weight is transfered to the front. The weight being in the front, it is the front brake that does most of the work, more than 80% usually, and nearly 100% when you are braking very hard. With the rear, you can only bra...
by MadRhino
Dec 14 2011 2:18am
Forum: E-Bike General Discussion
Topic: Is my bike frame disk brake compatible?
Replies: 31
Views: 2391

Re: Is my bike frame disk brake compatible?

No need for torque arms. The hub is in the rear and my frame is full steel. It's also a fairly weak motor. Not nearly as hardcore as the rest of you guys' rides. I would not count on that, those dropouts look smallish. Since your frame is steel, it would be possible to solder some reinforcements, t...
by MadRhino
Dec 13 2011 10:09pm
Forum: E-Bike Technical
Topic: Regen sticks -SOLVED - Magura e-brake not for DOT4 oil
Replies: 26
Views: 2149

Re: Regen sticks sometimes / defective Magura e-brake switch

Proper bleeding done?

Switches that operate by oil pressure, need only an air bubble to fail.
by MadRhino
Dec 13 2011 1:22am
Forum: E-Bike Technical
Topic: Wires on E-Bike motor
Replies: 11
Views: 1053

Re: Wires on E-Bike motor

You bought a brushless, 3 phase motor with hall sensors. You will need a new controller, for your new motor can't be powered by the one that was powering your old motor.
by MadRhino
Dec 10 2011 12:53pm
Forum: E-Bike General Discussion
Topic: Quietest bike tires?
Replies: 9
Views: 735

Re: Quietest bike tires?

Lesser thread, softer gum = quiet
by MadRhino
Dec 10 2011 12:29am
Forum: E-Bike Technical
Topic: 93% peak efficiency hubmotor is in!
Replies: 86
Views: 10326

Re: 93% peak efficiency hubmotor is in!

Yep, nice shiny drum brake. Yet, lots of work ahead, before it is laced in a rim and fitted with a disc brake.
by MadRhino
Dec 09 2011 7:34pm
Forum: E-Bike General Discussion
Topic: nine continents vs new crystalite comparisons
Replies: 10
Views: 1525

Re: nine continents vs new crystalite comparisons

I believe the H series Clyte beat the 9C by far, for acceleration, but not for reliability. I run mines with 24s Lipo, they have seen bursts of power close to 10,000w, but needed serious mod from the start.
by MadRhino
Dec 09 2011 11:04am
Forum: E-Bike Technical
Topic: What is wrong with this picture?
Replies: 17
Views: 2256

Re: What is wrong with this picture?

miuan wrote:...just get a white edition Schwalbe Fat Frank in 2.35 size and be happy, keeping this tyre as a backup for the other wheel.
That is how to do it.
Messing with tape and tubeless to make it fit, isn't worth the the hassle IMO, unless you value your time very cheap.
by MadRhino
Dec 08 2011 11:45pm
Forum: E-Bike Technical
Topic: 93% peak efficiency hubmotor is in!
Replies: 86
Views: 10326

Re: 93% peak efficiency hubmotor is in!

johnrobholmes wrote:...This is moped size stuff, bicycle frames are better off with a 9c or Puma.
Most of my DH bikes have 150mm dropout width, and they handle speed much better than a moped. :D
by MadRhino
Dec 08 2011 11:33pm
Forum: E-Bike Technical
Topic: What is wrong with this picture?
Replies: 17
Views: 2256

Re: What is wrong with this picture?

You just discovered that rims, and tires, are not born equal. Some pairs don't like each other, not that they aren't good, they are just different. This is more frequent in 700C size, that is easily confused with 27, 28 in. Since a rim and wheelbuild cost much more than a tire, your easy solution is...
by MadRhino
Dec 08 2011 7:35pm
Forum: E-Bike Technical
Topic: 93% peak efficiency hubmotor is in!
Replies: 86
Views: 10326

Re: 93% peak efficiency hubmotor is in!

Subscibed I can't wait to see your next build. Those motor specs sure look good, and the weight light enough to suit a dirt bike build. I have motors to play with this winter, now I know that next year has the potential to be even better. May the electric bike revolution bring us never ending perfor...
by MadRhino
Dec 08 2011 7:17pm
Forum: E-Bike Technical
Topic: how lightweight do you need your bike to be?
Replies: 35
Views: 2312

Re: how lightweight do you need your bike to be?

If you are on a tight budget, stay away from performance. Riding hard daily in a mountain that has many steep trails and crash traps, I can testify that one must be ready to spend alot on build and maintenance. Dogman is right, saying that 20 degree is about the most that is reasonable to ride. 40 d...
by MadRhino
Dec 08 2011 3:50pm
Forum: E-Bike Technical
Topic: how lightweight do you need your bike to be?
Replies: 35
Views: 2312

Re: how lightweight do you need your bike to be?

dont mean to stir a hornets nest but stair climbing is comfortably in the capabilities of a gas trials bike with a skilled rider, guess those bikes are 10+ hp or 7500w minimum though and pretty light My Gas Gas TXT Pro trial bike weighted 150 pounds with a 250cc, 2 stroke single piston engine. Stai...