Search found 2086 matches

by voicecoils
Dec 31 2015 1:59am
Forum: E-Scooter and Motorcycle General Discussion
Topic: jonescg's NEW electric racebike BUILD thread!
Replies: 1248
Views: 174747

Re: jonescg's NEW electric racebike BUILD thread!

Sweet! I can see it will be a great aesthetic match as well as meeting your goals of wider tyre & allowing more tyre choices.

That Samco is one expensive Buell :lol:
by voicecoils
Dec 28 2015 2:47am
Forum: E-Scooter and Motorcycle General Discussion
Topic: jonescg's NEW electric racebike BUILD thread!
Replies: 1248
Views: 174747

Re: jonescg's NEW electric racebike BUILD thread!

Very nice!

Is there a swingarm design & material chosen yet?
by voicecoils
Dec 09 2015 8:21am
Forum: E-Bike Build Threads / Photos & Video
Topic: Welcome to the Electric Horsemen
Replies: 84
Views: 9941

Re: Welcome to the Electric Horsemen

Congratulations, amazing work!
by voicecoils
Nov 22 2015 7:10am
Forum: EV Business World
Topic: High end motors - priced out of existence?
Replies: 45
Views: 7164

Re: High end motors - priced out of existence?

Surely you can build a motor yourself for these sorts of prices and pay yourself for the trouble... I despair :cry: Maybe it's time to do just that 8) Even if it ends up being a few % less efficient and/or ~10% heavier than a highly refined design, it would be nice to have control over the costs an...
by voicecoils
Oct 26 2015 9:57pm
Forum: E-Scooter and Motorcycle General Discussion
Topic: jonescg's NEW electric racebike BUILD thread!
Replies: 1248
Views: 174747

Re: jonescg's NEW electric racebike BUILD thread!

Great weekend report, thanks for the writeup. The fact that Chris can hand over the keys to a 700 Volt racebike for the rider to charge and operate solo is a real testament to the good design and construction! I'm stoked to hear racing is getting tight and close with swapping leads, this really adds...
by voicecoils
Oct 24 2015 10:21pm
Forum: E-Bike Build Threads / Photos & Video
Topic: E-S Stealth Electric Bike Owners
Replies: 16055
Views: 1416153

Re: E-S Stealth Electric Bike Owners

Anyway, I shared this because if save someone else 16 hours of trouble by checking the brake lever plunger screw, its worth it, even at the price of me looking like a tard. :roll: Ouch that is a touch lesson. Yep, backing out the lever adjust all the way is a necessary pre-bleed step, otherwise you...
by voicecoils
Oct 24 2015 10:04pm
Forum: E-Bike Technical
Topic: Magura MT5e (Hydraulic Brakes) for E-Bikes and Pedelecs
Replies: 7
Views: 2077

Re: Magura MT5e (Hydraulic Brakes) for E-Bikes and Pedelecs

Magura has been making ebrake hydro's for several years. Typically they are done in production runs for OEMs only and not sold through retail channels cause the demand just hasn't been there yet. Looks like that's changing which is cool to see. I've been running the MT5 front and MT2 rear for a few ...
by voicecoils
Oct 24 2015 9:50pm
Forum: E-Bike Non-hub Motor Drives
Topic: bosch classic ebike plastic gear
Replies: 24
Views: 5118

Re: bosch classic ebike plastic gear

I admire the perseverance, hope it pays off and works!
by voicecoils
Oct 21 2015 3:22pm
Forum: E-Bike Technical
Topic: The wheel-building spoke-lacing thread, post your tips
Replies: 231
Views: 33301

Re: The wheel-building spoke-lacing thread, post your tips

The newer Golden Motor MP5 wheels have a modified radial type spoking pattern to reduce the angle where the spokes enter the rim. The spokes look to have a similar angle to a regular bicycle wheel but they do not cross at all. I'm not crazy about the look, but is this pattern considered to be as st...
by voicecoils
Oct 21 2015 5:12am
Forum: E-Bike Technical
Topic: The wheel-building spoke-lacing thread, post your tips
Replies: 231
Views: 33301

Re: The wheel-building spoke-lacing thread, post your tips

No, 1 cross is plenty with a large diameter hub. 2 or more cross would likely cause more problems than provide benefit.

I'm assuming your hub is 200mm in diameter or larger. If so, than the bracing angles of 1 cross with that rim and hub will be similar to 3 cross in a normal bike wheel.
by voicecoils
Oct 20 2015 3:16pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Welcome to the Electric Horsemen
Replies: 84
Views: 9941

Re: Welcome to the Electric Horsemen

Beautiful, I think you've executed your vision superbly on this build.

p.s. I like how you casually have that NYX frame in the background...just another spare Ebike part in willows workshop 8)
by voicecoils
Oct 20 2015 3:08pm
Forum: E-Bike Technical
Topic: Tack weld BMC/MAC Clutch
Replies: 6
Views: 779

Re: Tack weld BMC/MAC Clutch

snowranger wrote:Thanks. I'm not running excessive power. My daughter just likes to jam on the throttle.
No worries, just keep in mind the motor will always be spinning afterward the mod so the extra drag from it will cause you to drain the battery a bit faster.
by voicecoils
Oct 20 2015 5:23am
Forum: E-Bike Technical
Topic: The wheel-building spoke-lacing thread, post your tips
Replies: 231
Views: 33301

Re: The wheel-building spoke-lacing thread, post your tips

Flange spoke hole diameter: ~3mm Eyelet hole diameter:~3.3mm Pretty hard to measure these accurately because the calliper doesn't neatly go into the hole. Will try a bit harder when I get home, just a bit hard at work. Unsure on spoke lace pattern. Spoke calculations so far have been based on 1X, g...
by voicecoils
Oct 19 2015 3:58pm
Forum: E-Bike Technical
Topic: Tack weld BMC/MAC Clutch
Replies: 6
Views: 779

Re: Tack weld BMC/MAC Clutch

I've seen it done and work reliably for some several thousand km.

Your plastic/composite gears and key on the shaft will be the next weakest links.

Just take it to someone with a beefy welder, 3min job
by voicecoils
Oct 13 2015 8:23am
Forum: General Discussion
Topic: UAV pilot travels with lipo in commercial jet, catches fire
Replies: 19
Views: 1140

Re: UAV pilot travels with lipo in commercial jet, catches f

Just be aware, even if I/we know better and refrain from carry-on RC Lipo, there’s more and more amateur photographers and FPV hobbyists flying with significant volume of this stuff. Thats a good point and the user base is really rising fast. Endless-Sphere readers are probably some of the best edu...
by voicecoils
Oct 13 2015 5:07am
Forum: General Discussion
Topic: UAV pilot travels with lipo in commercial jet, catches fire
Replies: 19
Views: 1140

Re: UAV pilot travels with lipo in commercial jet, catches f

Never in checked luggage…. I often fly with good condition RC Lipo in carry on bags. What might you do with the carry on bag if it starts smoking? I really wish people wouldn't. The quality of RC lipo is just too inconsistent - in other words, untrustworthy. I know this from my own experience buyin...
by voicecoils
Oct 13 2015 4:52am
Forum: E-Bike Build Threads / Photos & Video
Topic: Welcome to the Electric Horsemen
Replies: 84
Views: 9941

Re: Welcome to the Electric Horsemen

A Moped is allowed pedals. The other componentry you mentioned has not been questioned by the engineer - but are more than suited to the application. Handlebars needed to be a min. width to pass. Nice, I'm getting really excited for you! If your engineer doesn't question those items, I'd be keen to...
by voicecoils
Oct 13 2015 3:28am
Forum: E-Bike Technical
Topic: The wheel-building spoke-lacing thread, post your tips
Replies: 231
Views: 33301

Re: The wheel-building spoke-lacing thread, post your tips

How does one know what thickness spoke to use? I am trying to choose spokes for a 1500w Leafmotor DD with Sun Ringle MTX 33 rim? are these suitable? http://www.chainreactioncycles.com/au/en/dt-swiss-champion-pg-black-spokes-18-pack/rp-prod91854 The relevant measurements to answer your question are:...
by voicecoils
Oct 10 2015 4:31am
Forum: E-Bike Build Threads / Photos & Video
Topic: Welcome to the Electric Horsemen
Replies: 84
Views: 9941

Re: Welcome to the Electric Horsemen

Looking good!

Things I spot are:
*Road legal tyres, rims, horn, switchgear, lights & indicators.
*HV in orange conduit
*Isolated LV system
*S-pedalec brake levers & maybe self retracting kickstand?

Any thoughts on how handlebar/stem/forks/cranks/pedals will get treated for getting the bike plated?
by voicecoils
Oct 10 2015 1:22am
Forum: E-Bike Non-hub Motor Drives
Topic: bosch classic ebike plastic gear
Replies: 24
Views: 5118

Re: bosch classic ebike plastic gear

Bosch supply only complete drive units (DU) to bike shops via their service partners, not internals so I do not think you will find an original Bosch reduction gear on its own easily.

Interesting to see an aftermarket gear maker.
by voicecoils
Oct 10 2015 12:04am
Forum: General Discussion
Topic: UAV pilot travels with lipo in commercial jet, catches fire
Replies: 19
Views: 1140

UAV pilot travels with lipo in commercial jet, catches fire

Please don't travel by air with your hobby lipo or other haphazardly constructed battery packs! http://www.flightsafetyaustralia.com/2014/09/lithium-battery-fire-sparks-mayday/ After the fire, the passenger, who was a certified remotely piloted aircraft (RPA) operator in Australia, was located and a...
by voicecoils
Oct 08 2015 6:58am
Forum: E-Bike Non-hub Motor Drives
Topic: bosch classic ebike plastic gear
Replies: 24
Views: 5118

Re: bosch classic ebike plastic gear

Miles wrote:Call the hotline: +1 844.723.2453 :wink:
Exactly! Forget about making your own gears until trying the service centre / hotline first.
by voicecoils
Sep 25 2015 6:01am
Forum: General Discussion
Topic: Discussions aren't the same quality without Chalo
Replies: 45
Views: 2446

Re: Discussions aren't the same quality without Chalo

Welcome back Chalo!

Discussions on the merits of rim brakes and ridged frames with balloons tires had gone a bit stagnet in your absence :D
by voicecoils
Sep 25 2015 5:52am
Forum: E-Bike Reviews & Testing
Topic: Why I'm pulling my Bafang BBS02
Replies: 67
Views: 12905

Re: Why I'm pulling my Bafang BBS02

Sounds like a dedicated ebike (rather than a conversion) might suit you better, or a front hub motor kit which can be installed/removed with minimal disruption to the bike.
by voicecoils
Sep 24 2015 6:21am
Forum: E-Bike Technical
Topic: pre stressing spokes
Replies: 21
Views: 1075

Re: pre stressing spokes

Wonderful But there's 22 different article's. I will need some time. Thanks voilcoils. The one on stress relieving is only 8 paragraphs long. Here's the key section from it: A good example (thanks, Jobst) is the grappling hook used by an industrial crane or derrick. Such a hook is expected to carry...