Search found 797 matches

by Ohbse
Jan 18 2020 7:09pm
Forum: General Discussion
Topic: What's with this censoring nonsense happening on the forum?
Replies: 73
Views: 3467

Re: What's with this censoring nonsense happening on the forum?

Whether or not any particular poster feels that a certain thread is in the middle of a flame-war usually depends on who's thread it is. Any loosening of the customary actions used to slow down and hopefully avoid a flame-war will certainly spread in all directions. Members have often been asked to ...
by Ohbse
Jan 14 2020 1:17pm
Forum: Motor Technology
Topic: Roman Kostrygin - Sur-Ron 16kw outrunner
Replies: 24
Views: 3537

Re: Sur-Ron 16kw outrunner

With phase to phase resistance, no load current at two voltage levels, KV and motor weight the motor can be characterised and performance accurately predicted at virtually any input conditions. Extensive batteries of tests aren't strictly needed, but feel free to do then anyway Easiest way to measur...
by Ohbse
Jan 13 2020 11:59pm
Forum: E-Scooter and Motorcycle Photos & Videos
Topic: Suzuki GSX-R e899 K2
Replies: 390
Views: 56119

Re: Suzuki GSX-R e899 K2

Well I think Tesla’s are already in deep 10 seconds, maybe high 9 seconds. Their Problem is The Big braking system! They need 19“ rims and there is existing no good drag Tyre for this dimension. Well I also hope to get into the 9 seconds range. I think the system power should be good enough for it....
by Ohbse
Jan 13 2020 9:18pm
Forum: E-Scooter and Motorcycle Photos & Videos
Topic: Suzuki GSX-R e899 K2
Replies: 390
Views: 56119

Re: Suzuki GSX-R e899 K2

You must be aiming for sub 10's on the strip? I just love how you keep upping the game. For sure your old strip record will be crushed by the new beast. Tesla's are low 11's, right? Bet you can smoke a tesla this fall. With this power and torque potential, end state would be a lot, lot quicker than...
by Ohbse
Jan 13 2020 9:11pm
Forum: E-Vehicles General Discussion
Topic: Wind and Solar vs Coal, Gasoline, Nuclear
Replies: 5477
Views: 267604

Re: Wind and Solar vs Coal, Gasoline, Nuclear

...Things have been a little “hot” around here lately ! I have been dodging bushfires, no power , no internet, no phones, no roads out ! ... one hell of a Xmas and new year ! :shock: Now we have a bunch of F..wit Politicians and instant climate experts claiming that climate change ( increase in CO2...
by Ohbse
Jan 13 2020 9:00pm
Forum: E-Bike Technical
Topic: Qs205 + controller question!
Replies: 4
Views: 158

Re: Qs205 + controller question!

You would be better served by sticking to a 20s/84v maximum voltage and running a Nucular 24f controller with a fast wind. This is the current 'sweet spot' for highly reliable, high performance and feature rich controllers at an affordable price (given all of the functionality). Higher KV motor resu...
by Ohbse
Jan 13 2020 8:29pm
Forum: General Discussion
Topic: What's with this censoring nonsense happening on the forum?
Replies: 73
Views: 3467

Re: What's with this censoring nonsense happening on the forum?

Let me throw in my complete agreement with the sentiment from John, larsb and others. I've attempted to not let this get under my skin, but as another example of a good thread gone bad - My Mobipus controller discussion completely turned to crap and was unceremoniously locked without comment over a ...
by Ohbse
Jan 05 2020 5:21pm
Forum: E-Scooter and Motorcycle General Discussion
Topic: High voltage controller
Replies: 6
Views: 303

Re: High voltage controller

What weight/power is this bike designed to? If it's a lightweight 'bicycle' type build, then voltage >100v is unneccessary and undesirable, as more than enough performance is possible with ~80v than is possible to keep on the ground. If you're referring to a full size motorcycle build, then addition...
by Ohbse
Jan 05 2020 5:04pm
Forum: Items for Sale - New
Topic: Nucular electronics - complete kit for ev! [beta]
Replies: 1067
Views: 101319

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

What is the achievable stall current (at zero rpm, locked motor / standstill) with the Nucular 12 and 24fet? I am asking since this really is a key performance factor for the hotrodding people. I'm pretty sure you can play around with the settings related to the "clutch" function to achieve launche...
by Ohbse
Jan 04 2020 10:55pm
Forum: Items for Sale - New
Topic: Nucular electronics - complete kit for ev! [beta]
Replies: 1067
Views: 101319

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

Ohbse, did you order your 24Fet controller specifically to fit inside Sur-Ron controller? Was there any issues with gutting the Sur-ron stock controller? What do you mean trimming back the plastic pieces? Would you be able to put back your sur-ron original controller in the sur-ron housing if you n...
by Ohbse
Jan 04 2020 6:39pm
Forum: Items for Sale - New
Topic: Nucular electronics - complete kit for ev! [beta]
Replies: 1067
Views: 101319

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

Keep things civil please. That's what I would prefer too. There's zero point in deliberately undermining people. No point in it at all...giant waste of everyone's time. IMHO...it's completely unproductive in every way. And yet there is a point - you were mistaken, it was explained why you were mist...
by Ohbse
Dec 22 2019 4:47am
Forum: Items for Sale - New
Topic: Nucular electronics - complete kit for ev! [beta]
Replies: 1067
Views: 101319

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

Vasili is currently developing a bms 24s so I think that Nuculars electronics controllers are ready to accept this voltage. Maybe you will need to update the firmware. The 24s is for other chemistries with lower voltage such as lifepo4. Definitely would not recommend going above 20 or 21s, as EG sa...
by Ohbse
Dec 16 2019 2:25am
Forum: E-Bike Non-hub Motor Drives
Topic: SURRON LB: RESEARCH & DEVELOPEMENT
Replies: 206
Views: 23048

Re: SURRON LB: RESEARCH & DEVELOPEMENT

Agreed the rating on that pack is extremely dubious. I've built a lot of 30q packs and would never specify a 10p pack as 200a continuous. With that topology and density I suspect it would get pretty toasty at half that. 20a single cell discharge in free air gets to 80c before it's done. In other new...
by Ohbse
Dec 16 2019 1:08am
Forum: E-Scooter and Motorcycle General Discussion
Topic: Sur ron Road Version Max Speed
Replies: 8
Views: 1245

Re: Sur ron Road Version Max Speed

Not relevant to your original question - but the speedo calibration on the road legal surron is highly optimistic. You can actually alter the speedo ratio on the display and correct the speed by powering on the bike while holding one of the buttons on the display. I've changed mine from 1.0:1 to 1.1...
by Ohbse
Dec 14 2019 10:02pm
Forum: E-Scooter and Motorcycle Photos & Videos
Topic: Mid-mount Hubmonster Madass
Replies: 80
Views: 18885

Re: Mid-mount Hubmonster Madass

Nope - because I still haven't progressed this project any further than my last post.

Instead I bought a Surron l1e and got it road legal, now I'm modifying that instead.

I still want to do the Madass - but that's going to have to wait until I've built a new workshop.
by Ohbse
Sep 23 2019 1:30pm
Forum: EV Business World
Topic: Tesla Model 3
Replies: 1144
Views: 88849

Re: Tesla Model 3

? Are you suggesting they never ran a full lap ? But they just spent several days there running laps with the stated intention of setting a time. So why no time posted ? Not even an “unofficial” time ? They were happy to post a time for Laguna At least they qualified for the “Bongard” club. ! No ti...
by Ohbse
Sep 19 2019 4:44pm
Forum: E-Vehicles General Discussion
Topic: Taycan video with some useful information
Replies: 40
Views: 3428

Re: Taycan video with some useful information

Based on my experience and research on battery thermal management, Tesla has done a very good job with the system they are working with, but it is by no means the best. It has been optimised for the task (driving a 2 ton saloon car down the road a long way) and it does that very well. But more supe...
by Ohbse
Sep 19 2019 5:09am
Forum: E-Vehicles General Discussion
Topic: Taycan video with some useful information
Replies: 40
Views: 3428

Re: Taycan video with some useful information

But we know the “S”has always had an issue with thermal build up in their pack (and the motor.) Those issues are magnified at higher power levels (amps !) Induction motors are capable of huge burst power but have inherent thermal limitations with rotor cooling, the model S is a well optimised syste...
by Ohbse
Sep 19 2019 3:37am
Forum: E-Vehicles General Discussion
Topic: Taycan video with some useful information
Replies: 40
Views: 3428

Re: Taycan video with some useful information

It's possible there are thermal advantages from the higher voltage relative to other inverter tech available to Porsche but it can't be assumed.. generally higher voltage capable silicon has a proportional increase in resistance. There are 'sweet spots' where system efficiency peaks and perhaps 800v...
by Ohbse
Sep 18 2019 4:40pm
Forum: E-Vehicles General Discussion
Topic: Taycan video with some useful information
Replies: 40
Views: 3428

Re: Taycan video with some useful information

A great article with some very interesting details. Standout for me is the large number of additional components when compared to the Tesla drivetrain. In particular comparing Taycan to the construction of the Model 3 there's a lot of additional complexity. The transmission, multi plate clutch, actu...
by Ohbse
Aug 25 2019 11:17pm
Forum: E-Vehicles General Discussion
Topic: Battery dilemma - Voltage
Replies: 7
Views: 944

Re: Battery dilemma - Voltage

Unless you have a controller with >100v rating, then moving to 24s will most likely end in disappointment with a fried controller. There are many tales of people getting away with it for a period of time in the pursuit of peak performance, but that's not really relevant any more in this age of more ...
by Ohbse
Aug 19 2019 10:58pm
Forum: E-Bike Technical
Topic: Oil cooling your hub- NOT snake oil!
Replies: 608
Views: 110912

Re: Oil cooling your hub- NOT snake oil!

It's been 2.5 years since i posted that little blurb on sealing your hub.. for anybody new to this now, much has changed - just go buy some statorade and enjoy the same result with no mess!
by Ohbse
Aug 13 2019 8:27pm
Forum: Motor Technology
Topic: Legit electric motor technology breakthrough?
Replies: 19
Views: 2089

Re: Legit electric motor technology breakthrough?

Pretty obvious from their videos and marketing materials that their initial market will be "upscale" -- i.e. military, industrial, aeronautics, and certain construction technologies where there would be a premium for fail-safe operation. I can't see them moving downscale anytime soon. First product...
by Ohbse
May 29 2019 9:28pm
Forum: E-Scooter and Motorcycle General Discussion
Topic: Lightweight Retro Electric Motorcycle Design
Replies: 5
Views: 904

Re: Lightweight Retro Electric Motorcycle Design

My long term around town average energy consumption is about 52wh/mile over the past 20,000km. That's rapid acceleration, 35-40 mph cruise, bike weight of 42kg, QA v3 in 17" rim, 18650 pack, 20s 36ah from Samsung 30q cells. Top speed is >70mph. Power peak is around 12kw in daily ridden form. I weigh...
by Ohbse
May 02 2019 5:18pm
Forum: E-Scooter and Motorcycle General Discussion
Topic: I blew up ANOTHER controller
Replies: 7
Views: 693

Re: I blew up ANOTHER controller

Root cause is Kelly are rubbish, I feel like we need a sticky at the top of the board with a PSA about their issues. Random detonations are par for the course unfortunately... People luck out and get one that won't explode and post positively about the experience, but unfortunately there are a lot m...