Search found 117 matches

by WhatcomRider
Apr 26 2017 12:45am
Forum: EBike General Discussion
Topic: Torque-Sensor Motor w/ Sine-Wave Controller Build
Replies: 120
Views: 42246

Re: Torque-Sensor Motor w/ Sine-Wave Controller Build

The sine-wave controller is rated at 10-20 amps and is running in sensored mode. It is able to hold a steady speed as low as 3 rpm and smoothly ramps up to no-load speed. It is interesting that there is an audible change at around 130 rpm where it seems that the commutation shifts into a different ...
by WhatcomRider
Sep 26 2015 9:17pm
Forum: Items for Sale - New
Topic: Compact Field Oriented Controller, ASI + Grin, limited run
Replies: 1271
Views: 274078

Re: Compact Field Oriented Controller, ASI + Grin, limited r

As I'm new to FOC controller, I'm impressed by silence and smoothness already in full sensored but don't know what to expect from sensored start+sensorless run mode. cycborg wrote sensorless run is way to go to take full advantage of FOC, but why ? I'm keen to know this too. Can anyone please help ...
by WhatcomRider
Sep 26 2015 7:02pm
Forum: Items for Sale - New
Topic: Compact Field Oriented Controller, ASI + Grin, limited run
Replies: 1271
Views: 274078

Re: Compact Field Oriented Controller, ASI + Grin, limited r

jk1 wrote:Just wondering if this uses more or less power on a full throttle no load test vs a trapezoidal controller ?

Also for the same power can this maintain the same speed with more or less power ?
You will find your answers starting on page 3 of this thread.
by WhatcomRider
Jul 20 2015 2:06pm
Forum: EBike Reviews & Testing
Topic: Cirrus Cycles BodyFloat Suspension Seatpost
Replies: 28
Views: 11911

Re: Cirrus Cycles BodyFloat Suspension Seatpost

Hertzelz wrote:I boght my Bodyfloat few months ago and I use it with Serfas FSCR saddle on my ebike, fantastic seatpost!
Glad you like it! That looks like a comfy setup.
by WhatcomRider
Jul 20 2015 2:02pm
Forum: EBike Reviews & Testing
Topic: Cirrus Cycles BodyFloat Suspension Seatpost
Replies: 28
Views: 11911

Re: Cirrus Cycles BodyFloat Suspension Seatpost

TheBeastie wrote:So you still happy with your bodyfloat?
Yes, I have had no recurring back issues since I installed my BodyFloat.
I would definitely recommend you get one if your budget allows.
by WhatcomRider
Jul 17 2015 1:09pm
Forum: EBike Reviews & Testing
Topic: Cirrus Cycles BodyFloat Suspension Seatpost
Replies: 28
Views: 11911

Re: Cirrus Cycles BodyFloat Suspension Seatpost

Does the new BodyFloat set your seating back further? By the photos, it sure looks like it, but I've seen no mention of that. Though doesn't seem as bad setback as ThudBuster (setback mentioned a lot in reviews). The setback of the BodyFloat is minimal compared to that of a regular seatpost. In fac...
by WhatcomRider
Jul 08 2015 3:03am
Forum: Items for Sale - New
Topic: Compact Field Oriented Controller, ASI + Grin, limited run
Replies: 1271
Views: 274078

Re: Compact Field Oriented Controller, ASI + Grin, limited r

Cycle Activator

Definition of activator:
- thing that activates (switches on, energizes, sets in motion)
- impurity in a mineral that causes luminescence (cool light emission)

Glow-in-the-dark controllers would be awesome. 8)
by WhatcomRider
Oct 14 2014 2:07am
Forum: EBike Technical
Topic: 2WD (Two-Wheel Drive) FAQ
Replies: 218
Views: 55382

Re: 2WD (Two-Wheel Drive) FAQ

Teklektik's analysis is spot on. If you enter CdA = 0.29 (half the mountain bike frontal area) and Cr = 0.008 (same as mountain bike rolling resistance) and custom weight = 52kg (half the mass) you will get exactly what the graph above shows for max speed. So now that I have revealed the magic numbe...
by WhatcomRider
Jul 16 2014 2:44pm
Forum: EBike Technical
Topic: E-Bike trailer
Replies: 21
Views: 2385

Re: E-Bike trailer

That's a work of art. Thanks for sharing.
by WhatcomRider
Jun 30 2014 2:50am
Forum: EBike Reviews & Testing
Topic: Cirrus Cycles BodyFloat Suspension Seatpost
Replies: 28
Views: 11911

Re: Cirrus Cycles BodyFloat Suspension Seatpost

Another view of the internals taken during reassembly. The longer cap screw goes on the end and the shorter one goes in the middle.
IMG_0646.jpg
IMG_0646.jpg (210.8 KiB) Viewed 10536 times
To protect my investment I use a uniquely keyed seatpost lock with collar ($35) from http://www.pinheadlocks.com.
IMG_0624.jpg
IMG_0624.jpg (229.31 KiB) Viewed 10536 times
by WhatcomRider
Jun 30 2014 2:35am
Forum: EBike Reviews & Testing
Topic: Cirrus Cycles BodyFloat Suspension Seatpost
Replies: 28
Views: 11911

Re: Cirrus Cycles BodyFloat Suspension Seatpost

Removing the cap screw on the lower right side plate allows both side plates to be pulled off of the bearing pins. IMG_0613.jpg Notice that the bottom spring is longer than the top spring. When ordering replacement springs you have a choice of colors and whether you need a top or bottom spring. IMG_...
by WhatcomRider
Jun 30 2014 2:04am
Forum: EBike Reviews & Testing
Topic: Cirrus Cycles BodyFloat Suspension Seatpost
Replies: 28
Views: 11911

Re: Cirrus Cycles BodyFloat Suspension Seatpost

iperov wrote:I was try to buy from their site,
paid full cost and no item after 4 months
Sorry to hear that. I sent you a PM.
by WhatcomRider
Jun 30 2014 1:33am
Forum: EBike Reviews & Testing
Topic: Cirrus Cycles BodyFloat Suspension Seatpost
Replies: 28
Views: 11911

Re: Cirrus Cycles BodyFloat Suspension Seatpost

BodyFloats are adjusted for rider weight up to 260 lbs. through the use of 4 different spring thicknesses in 7 combinations. Replacement springs are color-coded white, purple, black, and orange in order of increasing stiffness. BF_CARD_BACK.jpg The bottom spring is freed by loosening the pre-load bo...
by WhatcomRider
Jun 30 2014 1:03am
Forum: EBike Reviews & Testing
Topic: Cirrus Cycles BodyFloat Suspension Seatpost
Replies: 28
Views: 11911

Re: Cirrus Cycles BodyFloat Suspension Seatpost

The 27.2mm post is carbon fiber with very clear height adjustment markers. BodyFloats are available in 330mm and 380mm lengths (carbon) and 450mm (titanium) with weights of 428g, 465g, and 548g respectively. IMG_0602.jpg Another view of the bottom spring with the pre-load adjustment bolt. (That's a ...
by WhatcomRider
Jun 30 2014 12:35am
Forum: EBike Reviews & Testing
Topic: Cirrus Cycles BodyFloat Suspension Seatpost
Replies: 28
Views: 11911

Re: Cirrus Cycles BodyFloat Suspension Seatpost

The pre-load adjusting bolt on the right allows for a range of 1/4" to 1-1/4" of up-and-down travel to suit the riders preference. The arrow and dots act as preload indicators, but I think newer models will use numbers rather than dots. The red cyclinders are end-of-travel elastomers. IMG_...
by WhatcomRider
Jun 30 2014 12:15am
Forum: EBike Reviews & Testing
Topic: Cirrus Cycles BodyFloat Suspension Seatpost
Replies: 28
Views: 11911

Cirrus Cycles BodyFloat Suspension Seatpost

I was fortunate to be able to purchase a Cirrus Cycles BodyFloat suspension seatpost directly from the makers. I have been riding with it on my Kona Minute cargo bike for about 4 months now. Prior to the BodyFloat my lower back would get sore after every ride through town. Now I rarely notice any di...
by WhatcomRider
May 15 2014 9:46pm
Forum: EBike General Discussion
Topic: Torque-Sensor Motor w/ Sine-Wave Controller Build
Replies: 120
Views: 42246

Re: Torque-Sensor Motor w/ Sine-Wave Controller Build

SolarRay wrote:What is the thickness of the lamination steel?
0.5mm or 0.35mm?
Hi SolarRay, I took my burned out XOFO torque-sensor motor apart today and can confirm that the laminations are 0.5mm thick.
by WhatcomRider
May 04 2014 8:20pm
Forum: EBike General Discussion
Topic: Has anyone got an Ursus Jumbo centre stand?
Replies: 23
Views: 5637

Re: Has anyone got an Ursus Jumbo centre stand?

Depending on the hardness and evenness of the surfaces that you typically park on, I would say anywhere from 1 to 3 inches of front tire clearance is good. From our measurements it looks like you would get about an inch. If you need more clearance than that you can always add a metal shim between th...
by WhatcomRider
May 03 2014 7:00pm
Forum: EBike General Discussion
Topic: Has anyone got an Ursus Jumbo centre stand?
Replies: 23
Views: 5637

Re: Has anyone got an Ursus Jumbo centre stand?

I recently installed one on my cargo bike to replace the weak and broken OEM one. I am very pleased with its stability, and how it folds back out of the way, yet clears my 2.35" tires. The only disadvantage I see is that with the legs down the cranks won't clear, which makes it a bit less conve...
by WhatcomRider
Apr 07 2014 1:44am
Forum: EBike General Discussion
Topic: 2 Speed Xiongda hubmotor
Replies: 1662
Views: 224460

Re: 2 Speed Motor

friendly1uk wrote: ---
I wonder if the $108 includes the special controller. The chap who quoted that price didn't seem to know there is one.
It's another $16 (USD) for the controller for this motor. I see now that the special controller is required to take advantage of the two speeds.
by WhatcomRider
Apr 05 2014 11:29pm
Forum: EBike General Discussion
Topic: 2 Speed Xiongda hubmotor
Replies: 1662
Views: 224460

Re: 2 Speed Motor

Here are the external dimensions of the 135mm and 145mm dropout versions of the Xiongda rear motors.
Xiongda2speed135mm.jpg
Xiongda2speed135mm.jpg (88.14 KiB) Viewed 34177 times
Xiongda2speed145mm.jpg
Xiongda2speed145mm.jpg (92.46 KiB) Viewed 34177 times
by WhatcomRider
Apr 04 2014 6:20pm
Forum: EBike General Discussion
Topic: 2 Speed Xiongda hubmotor
Replies: 1662
Views: 224460

Re: 2 Speed Motor

Cool. Who sells them and how much do they cost? The manufacturer's website is: http://www.xiongdamotor.cn/en/index.html. For sales information contact bonnie@xiongdamotor.com.cn. Back in September 2013 Bonnie quoted me $108 for the double-speed motor. I have not purchased one yet but may in the fut...
by WhatcomRider
Apr 03 2014 1:15am
Forum: EBike Technical
Topic: KT36ZWP controller And Tongsheng DG73626 hubmotor
Replies: 1
Views: 1790

Re: KT36ZWP controller And Tongsheng DG73626 hubmotor

Lopine, welcome to Endless Sphere. Have you tried contacting Tongsheng Bicycle Co: http://www.tsbicycle.net? The controller was most likely manufactured by Suzhou Kunteng Electronics Co: http://www.szktdz.com/index.php. (Google Translate works quite well when viewing this Chinese site.) You could tr...
by WhatcomRider
Mar 25 2014 3:46pm
Forum: EBike General Discussion
Topic: XOFO making 250W geared hubs in cast 20-inch wheels
Replies: 10
Views: 2976

Re: XOFO making 250W geared hubs in cast 20-inch wheels

spinningmagnets wrote:
My solution for the steep hills was to build a dual Mac motor system
Do you have a build-thread, or pics?
Not yet Ron, it is on my list of things to do...
by WhatcomRider
Mar 25 2014 1:26pm
Forum: EBike General Discussion
Topic: XOFO making 250W geared hubs in cast 20-inch wheels
Replies: 10
Views: 2976

Re: XOFO making 250W geared hubs in cast 20-inch wheels

That was me with the burned-up XOFO torque sensor motor. My best guess is that the hall sensor wire insulation melted into the phase wires and screwed up the controller timing which in turn fried the motor windings. I told the vendor about this problem and he said it was fixed, but I have no proof o...