Search found 771 matches

by Ohbse
Apr 16 2019 7:34pm
Forum: Motor Technology
Topic: Choosing the right controller for QS205
Replies: 4
Views: 112

Re: Choosing the right controller for QS205

Build sounds good, you'll definitely have fun :thumb: What size wheels are you intending on? Here's the summary of most of the existing options: Kelly - Junk performance, Junk reliability Adaptto - Inconsistent performance, hate QS v3 hubs, junk reliability, literally can't buy them if you wanted to...
by Ohbse
Apr 12 2019 10:19pm
Forum: E-Bike Technical
Topic: Recommended Soldering Iron for 5AWG?
Replies: 11
Views: 320

Re: Recommended Soldering Iron for 5AWG?

Best soldering iron for wiring that size is no soldering iron, it's just not the right technique for connections at that scale.

Best option is to invest in a hydraulic crimper - they can be had pretty cheaply from ebay etc. I love mine.
by Ohbse
Apr 09 2019 6:29pm
Forum: E-Bike General Discussion
Topic: 21kw+ QS273 won't outrun a 250cc?
Replies: 38
Views: 1143

Re: 21kw+ QS273 won't outrun a 250cc?

mobipus 72200, asi bac8000 controllers i suspect will give better results(just from trawling,not personal experience yet) me i like smaller light bikes with good power/weight ratio over big heavy tanks...going over 100 on highway gets boring fast anyway. id be maybe ditching the kelly, changing bat...
by Ohbse
Apr 09 2019 5:18pm
Forum: Stand-up E-scooters and E-skateboards
Topic: I fear no man. But that ...thing. it scares me.( Thunder dual motor).
Replies: 10
Views: 552

Re: I fear no man. But that ...thing. it scares me.( Thunder dual motor).

I rode one of these a couple of weeks ago - I know what you mean with regards to throttle response, it's pretty wild/non-linear. This thing would be SO much better with decent quality controllers with proper torque throttle. Dual Nucular 12fet would be ideal. My other observation was that with the d...
by Ohbse
Apr 01 2019 11:01pm
Forum: Stand-up E-scooters and E-skateboards
Topic: Scratch built 33" Kicktail Monocoque longboard
Replies: 11
Views: 491

Re: Scratch built 33" Kicktail Monocoque longboard

Wow that looks good with the glossy varnish finish. Nicely done! I like the idea of having your cover held on by magnets, so convenient. And because its so convenient, completely removes the need for externally mounted power button, charge port, ect. Could always install some kind of retaining brac...
by Ohbse
Mar 31 2019 6:02pm
Forum: Stand-up E-scooters and E-skateboards
Topic: Scratch built 33" Kicktail Monocoque longboard
Replies: 11
Views: 491

Re: Scratch built 33" Kicktail Monocoque longboard

So with the exception of the motor wiring that penetrates the deck right at the rear edge of the battery enclosure, there are zero holes or external controls at all. It has no power button, no external charge connector - the flipsky vesc powers itself on after the wheels move only a few inches and t...
by Ohbse
Mar 31 2019 5:30pm
Forum: Stand-up E-scooters and E-skateboards
Topic: Scratch built 33" Kicktail Monocoque longboard
Replies: 11
Views: 491

Re: Scratch built 33" Kicktail Monocoque longboard

Woops didn't spot I had a reply :) CAD/CNC is a hobby for me but a business for my wife - I built the router myself, most of the mechanical stuff is kit from CNCrouterparts, but I ended up doing all the motion control/wiring etc from scratch. Day job I run datacenters in various places round the wor...
by Ohbse
Mar 24 2019 11:20pm
Forum: Battery Technology
Topic: DIY HI POWERED PACK: First time, General questions
Replies: 60
Views: 1501

Re: DIY HI POWERED PACK: First time, General questions

Jonathan1981 wrote:
Mar 23 2019 1:52pm
anyone have experience with these?
Good, but not quite as good as the 30q
by Ohbse
Mar 21 2019 6:59pm
Forum: Battery Technology
Topic: DIY HI POWERED PACK: First time, General questions
Replies: 60
Views: 1501

Re: DIY HI POWERED PACK: First time, General questions

it would be awesome to find a cheap mold-able material the could do that. I was thinking something like mixing aluminum powder into a soft two part epoxy and molding a thin layer around each cell?..... thoughts, links etc???? just trying to think of a cost effective DIY cooling solution for such a ...
by Ohbse
Mar 18 2019 7:41pm
Forum: E-Bike Non-hub Motor Drives
Topic: Sur-Ron - New Mid drive Bike
Replies: 3451
Views: 225198

Re: Sur-Ron - New Mid drive Bike

Now is this 4000 the controller that motomoto was working with ASI to tune or is this another controller version. It seems like they realized themselves, the 8000 is just stupidity. There is simply not enough space in the frame to power it reliably. You will need ultra short lived lipo to power it ...
by Ohbse
Mar 18 2019 5:06pm
Forum: E-Vehicles General Discussion
Topic: Wind and Solar vs Coal, Gasoline, Nuclear
Replies: 3744
Views: 135487

Re: Wind and Solar vs Coal, Gasoline, Nuclear

The majority of NZ is rolling green hills with sheep and cows grazing. An enormous quantity of this could have very large turbines installed on the higher hills and have zero appreciable impact to the primary function of feeding agriculture. Quibbling over power density is utterly pointless when the...
by Ohbse
Mar 17 2019 6:06pm
Forum: Battery Technology
Topic: DIY HI POWERED PACK: First time, General questions
Replies: 60
Views: 1501

Re: DIY HI POWERED PACK: First time, General questions

your personal experience is not valid for this use case. this is a motorbike, not a scooter or ebike. 17km is done in less then 9 minutes with a motorbike on a highway. the >average< load for a motorbike is around 5kW. with your battery that would mean 70A continous (5.8A per cell). well into the r...
by Ohbse
Mar 11 2019 10:08pm
Forum: Battery Technology
Topic: DIY HI POWERED PACK: First time, General questions
Replies: 60
Views: 1501

Re: DIY HI POWERED PACK: First time, General questions

29e vs 30q is hardly a competition, the 30q is the correct cell for your defined requirements. I have built many packs with 30q - the one on my daily bike is 20s12p, I hit discharges of 160 amps every day. Peak pack temperature is <30c at conclusion of my journey of ~17km. This pack has done >18,000...
by Ohbse
Mar 02 2019 9:25pm
Forum: E-Bike General Discussion
Topic: Best controller to use with qs 205?
Replies: 58
Views: 1577

Re: Best controller to use with qs 205?

Yes I am, Samd from Ballarat ebikes is great to deal with, I purchased mine through him and he can assist with product queries. Yes, the Mobipus supports flux weakening, massively extending the speed range. I run with it disabled as my motor is quite a fast wind anyway being 3.5T. I have run this up...
by Ohbse
Feb 27 2019 10:07pm
Forum: E-Bike General Discussion
Topic: Best controller to use with qs 205?
Replies: 58
Views: 1577

Re: Best controller to use with qs 205?

I run a qs205 on a Mobipus 72200 for over two years now with absolute satisfaction. About 16,000KM of near daily high power commuting use. I've exploded most of the other controllers mentioned previously, with the exception of the Nucular and ASI, both of which look fantastic. Mobipus DO sell direct...
by Ohbse
Feb 07 2019 3:49pm
Forum: Items for Sale - New
Topic: Nucular electronics - complete kit for ev! [beta]
Replies: 440
Views: 36576

Re: Nucular electronics - complete kit for ev! [beta]

Keen for a 24 Fet and BMS! Love your work so far.
by Ohbse
Feb 06 2019 4:52pm
Forum: E-Vehicles General Discussion
Topic: Wind and Solar vs Coal, Gasoline, Nuclear
Replies: 3744
Views: 135487

Re: Wind and Solar vs Coal, Gasoline, Nuclear

Capture.JPG Ahhhhh, peace at last. I'm all for healthy debate and varied opinions, but as Chris said earlier - I think we're done here. On topic - the real driver for change (as in, the majority of capacity) is always going to be economic. It's incredible what passionate people in small but vocal n...
by Ohbse
Feb 05 2019 6:11pm
Forum: Stand-up E-scooters and E-skateboards
Topic: Scratch built 33" Kicktail Monocoque longboard
Replies: 11
Views: 491

Re: Scratch built 33" Kicktail Monocoque longboard

Oh, re Bluetooth - I ordered the module, but flipsky never delivered it with the controller - I need to hit them up about that. Today I've got a set of the Enertion R-spec hubs and focbox unity set up on the mock-up deck for testing. First impressions: this stuff is serious! Motors are much larger t...
by Ohbse
Feb 05 2019 6:06pm
Forum: Stand-up E-scooters and E-skateboards
Topic: Scratch built 33" Kicktail Monocoque longboard
Replies: 11
Views: 491

Re: Scratch built 33" Kicktail Monocoque longboard

Haha cheers man, the write up does make it seem easier than reality. Like anything I start off with saying 'how hard can it be?' and just learning as I go. If there's any interest I can make more of these, they're not going to be cheap though between the material cost (3x a normal deck!) and then ma...
by Ohbse
Feb 03 2019 12:56am
Forum: Stand-up E-scooters and E-skateboards
Topic: 10kW stand-up scooter with air suspension
Replies: 148
Views: 8326

Re: 5200W stand-up scooter with air suspension

Love everything about this, very impressive machining and design!
by Ohbse
Feb 03 2019 12:12am
Forum: Stand-up E-scooters and E-skateboards
Topic: Scratch built 33" Kicktail Monocoque longboard
Replies: 11
Views: 491

Re: Scratch built 33" Kicktail Monocoque longboard

After riding around the prototype for a while, I had a bit of a wish list Slightly more wheel clearance, the relief for wheel clearance was one of the coolest parts - carving through the layers of the board Slightly more wheel base Carve away more material, in particular improve the appearance of th...
by Ohbse
Feb 02 2019 9:35pm
Forum: Stand-up E-scooters and E-skateboards
Topic: Scratch built 33" Kicktail Monocoque longboard
Replies: 11
Views: 491

Re: Scratch built 33" Kicktail Monocoque longboard

So I started with CAD on the deck design. Because I wanted the battery and controller internally mounted I knew I was going to end up with quite a substantial thickness. I wanted to slim down everything outside of the battery area rather than leave the entire deck as a gigantic slab. Here's a shot o...
by Ohbse
Feb 02 2019 5:07pm
Forum: Stand-up E-scooters and E-skateboards
Topic: Scratch built 33" Kicktail Monocoque longboard
Replies: 11
Views: 491

Scratch built 33" Kicktail Monocoque longboard

A few people expressed an interest in what I've been cooking - so I thought I should keep a log and maybe inspire some others to jump in. I've long wanted to build an electric skateboard, mostly for fun and to make for the occasional short trip around the CBD or to and from the train station. Unlike...
by Ohbse
Jan 20 2019 4:10pm
Forum: E-Bike Technical
Topic: Adaptto Mini-E/Max-E Owner's Thread
Replies: 5057
Views: 498316

Re: Adaptto Mini-E/Max-E Owner's Thread

Offroader wrote:
Jan 20 2019 4:08pm
Does anyone know if its normal to get a !BMS! error when for about 1 second when turning on the max-e? It seems to do it every time but goes away in a second and everything seems normal?
All of mine did exactly the same thing. It's just establishing comms to the BMS.
by Ohbse
Jan 18 2019 4:20am
Forum: Motor Technology
Topic: SiliXcon FOC Controllers, small, powerful and many features
Replies: 17
Views: 1228

Re: SiliXcon FOC Controllers, small, powerful and many features

Anybody got pricing on any of the models? Certainly looks great, even the ''big'' version is tiny.