Search found 33 matches

by serious_sam
Oct 19 2019 3:53am
Forum: E-Bike Technical
Topic: ENDURO EEB: Help me get rid of high speed wobble
Replies: 5
Views: 174

Re: ENDURO EEB: Help me get rid of high speed wobble

Sounds like you need more suspension tuning tips from flat tyre. The last lot of advice you took from him sounds like it's working out great. :lol:

viewtopic.php?f=2&t=102244&p=1495481#p1495300
by serious_sam
Oct 17 2019 2:47am
Forum: Items for Sale - New
Topic: Nucular electronics - complete kit for ev! [beta]
Replies: 796
Views: 67197

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

Deleted because I should know better than get involved in online arguments. Peace out.
by serious_sam
Oct 06 2019 4:21am
Forum: E-Bike General Discussion
Topic: MTB for EBIKE Conversion
Replies: 7
Views: 328

Re: MTB for EBIKE Conversion

Rsmk4turbo wrote:
Oct 04 2019 5:23am
the wheel has started slipping out of the drop outs with torque arms fitted both sides.
Can you post a picture of the installation?

Horizontal/forwards torque arms with vertical axle slot is perfect geometry to lever the axle out of the drop-outs. It's possible that's what's happening here.
by serious_sam
Sep 18 2019 4:12am
Forum: E-Bike Technical
Topic: Battery Design Feedback for 20s10p
Replies: 8
Views: 233

Re: Battery Design Feedback for 20s10p

If you're going to run 2 packs/BMSs in parallel, you may want to consider the failure mode of one pack suddenly disconnecting . ie. If the BMSs have LVC capability, and one disconnects its pack during a peak current draw condition, the second pack suddenly experiences double the peak current. Is thi...
by serious_sam
Sep 17 2019 4:38am
Forum: E-Bike Technical
Topic: Battery Design Feedback for 20s10p
Replies: 8
Views: 233

Re: Battery Design Feedback for 20s10p

That's 40S5P (and it's missing the parallel connection and balance point between every second set of series connections).
by serious_sam
Sep 08 2019 4:02am
Forum: E-Bike Technical
Topic: High powered Ebikes high speed suspension setup
Replies: 17
Views: 510

Re: High powered Ebikes high speed suspension setup

blah blah blah Another silly person who doesn't know suspension. Even his lighter spring won't be bottoming out on the street. But streets are bumpy and there are kerbs. If you have travel, you should try to use it. People ALWAYS go too stiff with suspension. Best advice I have received on endless-...
by serious_sam
Sep 07 2019 9:05pm
Forum: E-Bike Technical
Topic: High powered Ebikes high speed suspension setup
Replies: 17
Views: 510

Re: High powered Ebikes high speed suspension setup

On the street you shouldn't be going through maximum travel. Likewise higher rebound and possibly compression will have handling benefits compared to offroad. Bingo. Start by installing the lighter spring. With all due respect, that is not correct. Consider what is the fundamental purpose of suspen...
by serious_sam
Sep 04 2019 6:18am
Forum: E-Bike General Discussion
Topic: Where to buy MXUS in EU?
Replies: 13
Views: 578

Re: Where to buy MXUS in EU?

I just bought an MXUS 3k 4T direct from MXUS in China. https://ebikemotor.en.alibaba.com/productgrouplist-804538057/Most_Powerful_3K_5K_motor_kit.html Payment was by PayPal. Their Paypal account is mgspc@hotmail.com (sounds dodgy, but is actually legit). Total cost with shipping to Australia was ab...
by serious_sam
Aug 28 2019 6:37am
Forum: E-Bike General Discussion
Topic: Help me develop the perfect throttle
Replies: 73
Views: 2253

Re: Help me develop the perfect throttle

Reading through this thread makes me think of this:
Homer's Car.jpg
Homer's Car.jpg (60.64 KiB) Viewed 303 times
by serious_sam
Aug 06 2019 5:26am
Forum: E-Bike General Discussion
Topic: Where to buy MXUS in EU?
Replies: 13
Views: 578

Re: Where to buy MXUS in EU?

The brake caliper never fit with the logos, you you need spaces on motor to space disc out The disc mounting surface is approx 14mm out from the side cover. My caliper (Zee) extends to approximately 16.5mm inboard from the disc mounting face. So I think I will have approx 2.5mm (plus the height of ...
by serious_sam
Jul 31 2019 4:51am
Forum: E-Bike Technical
Topic: DIY 0-5k throttle
Replies: 25
Views: 1240

Re: DIY 0-5k throttle

Any update on the remote throttle pot? The combination of this AliExpress throttle + new AE96600 controller is a dream: I can feather the throttle and ride the bike as slow as 1mph without any twitchiness. However, I cannot tell you what portion of this welcome behavior is due to the throttle and w...
by serious_sam
Jul 31 2019 4:38am
Forum: E-Bike General Discussion
Topic: Where to buy MXUS in EU?
Replies: 13
Views: 578

Re: Where to buy MXUS in EU?

I just bought an MXUS 3k 4T direct from MXUS in China. https://ebikemotor.en.alibaba.com/productgrouplist-804538057/Most_Powerful_3K_5K_motor_kit.html Payment was by PayPal. Their Paypal account is mgspc@hotmail.com (sounds dodgy, but is actually legit). Total cost with shipping to Australia was abo...
by serious_sam
Jul 30 2019 6:26am
Forum: Items for Sale - New
Topic: Nucular electronics - complete kit for ev! [beta]
Replies: 796
Views: 67197

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

I'd like to know the answer to this question too. I don't understand the purpose of charging through the motor/controller. Is it so an unregulated power supply can be regulated via the motor inductance and the controller FETs to charge the battery? i.e. The charge rate and cut-off point is controll...
by serious_sam
Jul 29 2019 5:16am
Forum: E-Bike Technical
Topic: DIY 0-5k throttle
Replies: 25
Views: 1240

Re: DIY 0-5k throttle

MJSfoto1956 wrote:
Jul 03 2019 7:15pm
Yeah, it seems pretty sweet and the price is right. So far the "feel" is exactly what I was looking for. In the next week I hope to be able to report as to whether or not the "twitchiness" is reduced or not.

M
Any update on the remote throttle pot?
by serious_sam
Jul 29 2019 4:25am
Forum: Items for Sale - New
Topic: Nucular electronics - complete kit for ev! [beta]
Replies: 796
Views: 67197

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

Are many people charging through the controller or straight through the BMS, Is there any benefit charging through controller if you have BMS Fitted. Cheers I'd like to know the answer to this question too. I don't understand the purpose of charging through the motor/controller. Is it so an unregul...
by serious_sam
Jul 27 2019 9:31pm
Forum: Items for Sale - New
Topic: Nucular electronics - complete kit for ev! [beta]
Replies: 796
Views: 67197

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

Thanks Vasily and ElectricGod. ElectricGod, just for my understanding, I calculate 1kOhm into 1000uF (my estimated capacitance of the controller) , gives a time constant T of 1 second. So 99% charge will be reached at 5T = 5 seconds. You advise that it will take only 1 second to charge, so is there ...
by serious_sam
Jul 27 2019 6:20am
Forum: Items for Sale - New
Topic: Nucular electronics - complete kit for ev! [beta]
Replies: 796
Views: 67197

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

I'm building a new bike and I have a Nucular 12F on order. If I use an external precharge circuit that charges up the 12F caps over say 1 second (to 84V), will it cause any problems (for example, unpredictable start-up for the microcontroller) ? Thanks.
by serious_sam
May 14 2019 1:38am
Forum: E-Bike General Discussion
Topic: Advice on MXUS Turbo build
Replies: 43
Views: 1570

Re: Advice on MXUS Turbo build

Sure. Like I say, I'm not stating it as fact. It's a youtube video. Can't say how correct or not the methods are. I just found another video where the guy tests one of those cells and gets totally different results. First he gets 37mOhm, then he changes how the battery is clipped, and gets much lowe...
by serious_sam
May 13 2019 4:12pm
Forum: E-Bike General Discussion
Topic: Advice on MXUS Turbo build
Replies: 43
Views: 1570

Re: Advice on MXUS Turbo build

These look like something worth considering if you want to draw a lot of amps and not spend a ton of money. https://www.ebay.com/itm/20-SPIM08HP-3-7V-8AH-LITHIUM-POLYMER-BATTERIES-25C-200A-SUPER-CELLS-24V-36V-48V/173305036284?hash=item2859c8fdfc:g:QXIAAOSw8~5a72gx Just as another reference for peop...
by serious_sam
May 11 2019 10:03pm
Forum: E-Bike General Discussion
Topic: Advice on MXUS Turbo build
Replies: 43
Views: 1570

Re: Advice on MXUS Turbo build

These look like something worth considering if you want to draw a lot of amps and not spend a ton of money. https://www.ebay.com/itm/20-SPIM08HP-3-7V-8AH-LITHIUM-POLYMER-BATTERIES-25C-200A-SUPER-CELLS-24V-36V-48V/173305036284?hash=item2859c8fdfc:g:QXIAAOSw8~5a72gx That's $600AUD shipped to my door ...
by serious_sam
May 11 2019 4:40am
Forum: E-Bike General Discussion
Topic: Advice on MXUS Turbo build
Replies: 43
Views: 1570

Re: Advice on MXUS Turbo build

tolkaNo wrote:
May 11 2019 4:34am
Yeah or you can downsize the motor and controller to match the battery, which is personally what i would do
Ok, that's something to think about.

I guess the major advantage to the stealth bomber type bikes is packaging of a big battery pack.
by serious_sam
May 11 2019 4:33am
Forum: E-Bike General Discussion
Topic: Advice on MXUS Turbo build
Replies: 43
Views: 1570

Re: Advice on MXUS Turbo build

Yeah im happy with it, the 1500w leaf would be a way better choice motor wise but im gonna use this one until it melts :lol: Nice! Correct me if I'm wrong, but what I understand you to be saying is basically the battery is too small, and the motor and controller are overkill. Basically I just need ...
by serious_sam
May 11 2019 4:22am
Forum: E-Bike General Discussion
Topic: Advice on MXUS Turbo build
Replies: 43
Views: 1570

Re: Advice on MXUS Turbo build

tolkaNo wrote:
May 11 2019 4:12am
Cheapo ebay 1000w DD, 12 fet em3ev infineon, 18s5p samsung 30q
Sounds like the 30Q are good cells. Are you happy with that setup ?
by serious_sam
May 11 2019 4:06am
Forum: E-Bike General Discussion
Topic: Advice on MXUS Turbo build
Replies: 43
Views: 1570

Re: Advice on MXUS Turbo build

tolkaNo wrote:
May 11 2019 3:57am
You're looking at >12v of sag trying to pull 150a out of 5p vtc6, it's not gonna happen, you're massively over-estimating that tiny pack

There's chargers all over aliexpress for 50 bucks that can do 20s
Thanks. I'll have a look for the chargers.

What motor/controller/pack do you run ?
by serious_sam
May 11 2019 3:59am
Forum: E-Bike General Discussion
Topic: Advice on MXUS Turbo build
Replies: 43
Views: 1570

Re: Advice on MXUS Turbo build

Then adding heavier 3000w motor, heavy moto rims, moto tires, only to go 60kmh which is about 1800w? The whole thing doesn't work together Ultimately up to you though, if anything id stay with the mxus 3k but i think you could get away with the leaf, then 24" bicycle rims and a lighter cheaper cont...