Search found 29 matches

by 81style
Jan 11 2019 3:32pm
Forum: E-Bike Technical
Topic: Waterproof wire nuts vs soldering connections
Replies: 10
Views: 476

Re: Waterproof wire nuts vs soldering connections

neptronix wrote:
Jan 11 2019 3:30pm
On the phase wires, double up the heat shrink as well.
Good tip. Thanks!
by 81style
Jan 11 2019 3:16pm
Forum: E-Bike Technical
Topic: Waterproof wire nuts vs soldering connections
Replies: 10
Views: 476

Waterproof wire nuts vs soldering connections

Looking for a sanity check here.... For electrical connections tucked away inside my EEB frame, would waterproof wire nuts suffice (as opposed to solder + heat shrink)? Using wire nuts may be a easy way to expedite my build without sacrificing functionality, durability, and safety. However, I do rea...
by 81style
Dec 27 2018 7:22pm
Forum: E-Bike Technical
Topic: Bent rim walls ok to ride?
Replies: 2
Views: 212

Bent rim walls ok to ride?

Friends- Today while mounting some new tires I managed to bend my rim walls. Because the rims are still perfectly circular and true, is this simply an aesthetic mishap, or are there safety/performance impacts that I should consider before riding? These rims are on a 3kw EEB. Sanity check please. Tha...
by 81style
Nov 13 2018 1:38pm
Forum: E-Bike Technical
Topic: Elegant solution for 72v main power switch
Replies: 15
Views: 1204

Re: Elegant solution for 72v main power switch

Dumsterdave wrote:
Nov 13 2018 1:31pm
81style wrote:
Nov 13 2018 12:05pm
Dumsterdave wrote:
Nov 12 2018 8:21am
I'm using one of these with my phaseruner at 72v and it had been working fine for about 6 months.
What happened after 6 months?
Nothing, it's still working
Gotcha. The "had been" threw me.
by 81style
Nov 13 2018 12:05pm
Forum: E-Bike Technical
Topic: Elegant solution for 72v main power switch
Replies: 15
Views: 1204

Re: Elegant solution for 72v main power switch

Dumsterdave wrote:
Nov 12 2018 8:21am
I'm using one of these with my phaseruner at 72v and it had been working fine for about 6 months.
What happened after 6 months?
by 81style
Nov 09 2018 12:30pm
Forum: E-Bike Technical
Topic: Elegant solution for 72v main power switch
Replies: 15
Views: 1204

Re: Elegant solution for 72v main power switch

Elimination of unnecessary components is always the most elegant solution to me. I definitely see the appeal of this approach. Even my 20-30kw builds don't have or need main power switches 20-30kw? Wow, that's serious power! What voltages are these builds operating at? I'm using a Phaserunner on my...
by 81style
Nov 02 2018 1:15pm
Forum: E-Bike General Discussion
Topic: Remote On/Off Switch for Phaserunner V2
Replies: 17
Views: 1842

Re: Remote On/Off Switch for Phaserunner V2

Wow. Lots to think about here. Second could I use a switch that is rated at 12v DC (and probably much more amps than I'm dealing with) for switching the 52vDC here? Something like: https://www.amazon.com/dp/B0171G7BKC?th=1 Regarding the OP's original question, would stepping down the voltage with a ...
by 81style
Oct 30 2018 5:30pm
Forum: E-Bike Technical
Topic: Elegant solution for 72v main power switch
Replies: 15
Views: 1204

Elegant solution for 72v main power switch

Friends Can anyone suggest an good solution for a main power switch for my 72v build? I was thinking of adding a DC circuit breaker between the battery and controller, but perhaps there is a more elegant solution? The really slick options such as solid state push button switches seem to be for 52v a...
by 81style
Oct 28 2018 11:12am
Forum: E-Bike Technical
Topic: Hub motor selection guidance: 3kw unbranded vs 5kw QS
Replies: 32
Views: 2565

Re: Hub motor selection guidance: 3kw unbranded vs 5kw QS

Even if I end up with the 5kw QS, I'd probably limit it to 3kw max via CycleAnalyst since that's currently the upper limit of my comfort zone. If you're using a throttle/controller based around torque control vs speed control, you probably won't need to do that. Excellent thought. I'll be using a P...
by 81style
Oct 26 2018 10:29pm
Forum: E-Bike Technical
Topic: Hub motor selection guidance: 3kw unbranded vs 5kw QS
Replies: 32
Views: 2565

Re: Hub motor selection guidance: 3kw unbranded vs 5kw QS

Time for me to do some caliper measurements on my EEB frame. Took measurements this evening and turns out that the 17" rims will fit much better than 19" rims in terms of both width and diameter, even with the wider tires. So there we have it: 17" wheel set with QS motor prevails! Thanks everyone f...
by 81style
Oct 26 2018 2:28pm
Forum: E-Bike Technical
Topic: Hub motor selection guidance: 3kw unbranded vs 5kw QS
Replies: 32
Views: 2565

Re: Hub motor selection guidance: 3kw unbranded vs 5kw QS

With a 17" you can run a 3.25" or 3.50" rear tire but with a 19" the widest you can fit is a 3.00". Say you run the 17" with a fat 3.50" rear, that rim + tire + tube combo might weigh 2-3lbs more than a 19" with 2.75 or a 3.00. There's quite a bit more than the torque vs speed tradeoffs to consider...
by 81style
Oct 26 2018 12:31pm
Forum: E-Bike Technical
Topic: Hub motor selection guidance: 3kw unbranded vs 5kw QS
Replies: 32
Views: 2565

Re: Hub motor selection guidance: 3kw unbranded vs 5kw QS

2WheelsMovesTheSoul wrote:
Oct 26 2018 11:33am
There's quite a bit more than the torque vs speed tradeoffs to consider.
Indeed, which is exactly why value the ES community's input on these matters.
by 81style
Oct 26 2018 12:25pm
Forum: E-Bike Technical
Topic: Hub motor selection guidance: 3kw unbranded vs 5kw QS
Replies: 32
Views: 2565

Re: Hub motor selection guidance: 3kw unbranded vs 5kw QS

Nah, if a QS 273 can fit, this 205 should be fine. https://endless-sphere.com/forums/viewtopic.php?t=83797 The example you reference is on 18" rims and radially laced. Because I'm considering cross-lacing on a 17" rim, this may be an apples and oranges comparison. Thanks tho. Are inner tubes easier...
by 81style
Oct 26 2018 10:49am
Forum: E-Bike Technical
Topic: Hub motor selection guidance: 3kw unbranded vs 5kw QS
Replies: 32
Views: 2565

Re: Hub motor selection guidance: 3kw unbranded vs 5kw QS

Thanks for the input everybody- really helps frame my thinking. As for EM3EV's 3k motor - I had one a couple of years ago - nice motor . obviously not a patch on a QS205. I don't think anyone bought and built up an EEB frame to save weight. Even at 150lbs, the bike feels nimble and very easy to ride...
by 81style
Oct 24 2018 6:05pm
Forum: E-Bike Technical
Topic: Hub motor selection guidance: 3kw unbranded vs 5kw QS
Replies: 32
Views: 2565

Re: Hub motor selection guidance: 3kw unbranded vs 5kw QS

Nice to see some activity on this thread. Thought it may have fizzled. Only thing I'm hesitant on is the fact that you can only use the single speed freewheel on it. Single speed is the only way I go because there's enough stuff crowding my limited handlebar space that I don't need to add a shifter ...
by 81style
Oct 19 2018 1:02pm
Forum: E-Bike Technical
Topic: Hub motor selection guidance: 3kw unbranded vs 5kw QS
Replies: 32
Views: 2565

Re: Hub motor selection guidance: 3kw unbranded vs 5kw QS

neptronix wrote:
Oct 19 2018 12:04pm
10lbs more is alot when the bike is already 70lbs.
I actually anticipate that my final build will weigh in at over 100 lbs since I'm using an EEB frame and looking to incorporate the largest battery that will physically fit (upwards of 20s10p).
by 81style
Oct 19 2018 11:27am
Forum: E-Bike Technical
Topic: Hub motor selection guidance: 3kw unbranded vs 5kw QS
Replies: 32
Views: 2565

Re: Hub motor selection guidance: 3kw unbranded vs 5kw QS

spinningmagnets wrote:
Oct 18 2018 5:16pm
I have manipulated a 5-kW hubmotor bike, and the weight was astonishing.
Do you think a 10 lb reduction in weight would make a significant difference in your experience?
by 81style
Oct 18 2018 3:36pm
Forum: E-Bike Technical
Topic: Hub motor selection guidance: 3kw unbranded vs 5kw QS
Replies: 32
Views: 2565

Hub motor selection guidance: 3kw unbranded vs 5kw QS

Friends... I'd like some guidance selecting between the following two hub motors (both offered from em3ev): 3KW Rear Direct Drive Hub Motor 5KW QS V3 Rear Direct Drive Hub Motor I'm shooting for a 3kw build, so the 3kw option above seems logical, but it's an unbranded motor which makes me a little u...
by 81style
Sep 26 2018 1:19pm
Forum: E-Bike General Discussion
Topic: Remote On/Off Switch for Phaserunner V2
Replies: 17
Views: 1842

Re: Remote On/Off Switch for Phaserunner V2

Another option would be to use a simple snap-in rocker switch with a small electronics project box that your mount somewhere on your rig. The tricky part here is that most rocker switches are rated for vac, but I did find a handy conversion matrix for dc applications that is easy to understand.
by 81style
Sep 17 2018 11:26pm
Forum: E-Bike Technical
Topic: Properly paring motor and battery voltage
Replies: 1
Views: 240

Properly paring motor and battery voltage

Friends The original idea for the project I'm currently planning out included a Phaserunner, 3000w QS hub motor, and a beefy 72v/34Ah battery pack. The plan was to govern the output to 3000 watts max via Cycle Analyst to give myself the peace of mind that no matter how hard and long I run the bike, ...
by 81style
Sep 14 2018 8:27pm
Forum: E-Bike Technical
Topic: Powering lights with Cycle Analyst / Phaserunner
Replies: 2
Views: 360

Re: Powering lights with Cycle Analyst / Phaserunner

Thanks for the clarification. Looks like I'd be well within the 1A threshold. I don't know what 'confuse the power consumption' means I read in another post that the point at which you tap the battery main will affect how the CA displays power consumption. That member was using a shunt with a non-Gr...
by 81style
Sep 14 2018 6:42pm
Forum: E-Bike Technical
Topic: Powering lights with Cycle Analyst / Phaserunner
Replies: 2
Views: 360

Powering lights with Cycle Analyst / Phaserunner

Friends- I'm sketching out a new 72v build and am currently investigating lighting solutions. I'm looking at the Supernova m99 line of headlights and tail lights. Specs as follows... M99 MINI PURE-45 headlight: 7.5w/12v M99 TAIL LIGHT-45: 0.4w/12v Ideally I'd like to power both lights from the Cycle...
by 81style
Jun 04 2018 6:14pm
Forum: E-Bike Build Threads / Photos & Video
Topic: My ebike build with PowerVelocity.com
Replies: 6
Views: 1699

Re: My ebike build with PowerVelocity.com

That, my friend, is a work of art. Well done.
by 81style
May 09 2018 12:19pm
Forum: E-Bike General Discussion
Topic: A2B Octave / Metro modification sanity check
Replies: 2
Views: 303

Re: A2B Octave / Metro modification sanity check

I ran a 3KW+ hub on a cheapo frame for months. And as long as the torque arms are adequate you'll be fine. That is reassuring; thanks. I'm still concerned about loading so much weight on the rear rack though. A 16s8p battery plus controller weighs in at 10kg total. That amount of mass so high up an...
by 81style
May 08 2018 10:54am
Forum: E-Bike General Discussion
Topic: A2B Octave / Metro modification sanity check
Replies: 2
Views: 303

A2B Octave / Metro modification sanity check

Friends- I've been contemplating doing some modifications to my 2017 A2B Octave and I would love your input. I'm willing to swap out the motor, controller, battery, and wheels, but I am not interested in making any changes to the frame, swingarm, or torque arms. My original though was to outfit the ...