Search found 54 matches

by MorbidlyObeseKoala
Dec 28 2020 1:44pm
Forum: E-Scooter and Motorcycle Photos & Videos
Topic: Electric Roadster Motorbike
Replies: 50
Views: 2486

Re: Electric Roadster Motorbike

Really taking shape, jealous off your workshop too. My first thought on the NaOH on the fork was make it a thick slurry and paint it on with a brush and wipe off after 5-10 minutes. Ideally less mess and more control over where it touches. I'd get some elbow length gloves before doing it though, aci...
by MorbidlyObeseKoala
Dec 15 2020 5:00pm
Forum: E-Scooter and Motorcycle General Discussion
Topic: Upgrading a Nitro ECO Tiger 1300W 48V
Replies: 9
Views: 294

Re: Upgrading a Nitro ECO Tiger 1300W 48V

Haven't seen anyone try to upgrade this type of dirt bike yet, but I am very interested since it looks like that is available in several countries and has better components than Razor or some of the other toys. First impressions about putting more voltage through the system is you will blow your con...
by MorbidlyObeseKoala
Dec 03 2020 1:18pm
Forum: Stand-up E-scooters and E-skateboards
Topic: Need some input on this controller for turnigy lipo/80100
Replies: 1
Views: 161

Re: Need some input on this controller for turnigy lipo/80100

I don't think your picture attached, can't see it. Broad advice for lipo is the same around here usually: Keep the cells as closely balanced as you can, keep them protected from puncture. If you aren't using them for some period of time (several weeks or months) don't store them fully charged. Your ...
by MorbidlyObeseKoala
Nov 09 2020 4:52pm
Forum: E-Scooter and Motorcycle General Discussion
Topic: Mini Moto Build
Replies: 16
Views: 1547

Re: Mini Moto Build

Awesome work. Can you post some final specs for the group so we can point the next people that want to make a pitbike at this thread?

Top speed? Cost? Run time or range?
by MorbidlyObeseKoala
Oct 27 2020 11:01am
Forum: E-Scooter and Motorcycle General Discussion
Topic: Electric Minibike Conversion
Replies: 10
Views: 426

Re: Electric Minibike Conversion

I think the chain and the MY1020 motor keeps that classic look and they come with a mounting bracket already welded on. The chain might be a bit noisier than hubs but I think it would be a touch cheaper too. I mean is the goal a fun toy or a legit vehicle you need to be as comfortable and reliable a...
by MorbidlyObeseKoala
Oct 26 2020 9:04am
Forum: E-Bike Technical
Topic: CA3 throttle output voltage not changing
Replies: 3
Views: 238

Re: CA3 throttle output voltage not changing

Throttle is most definitely in pass thru mode. Have not been successful in getting a response through the CA from the throttle to the controller. Throttle will spin the motor when directly connected to the controller and the signal voltage goes up and down with it. Is there another setting that migh...
by MorbidlyObeseKoala
Oct 24 2020 3:28pm
Forum: E-Bike Technical
Topic: CA3 throttle output voltage not changing
Replies: 3
Views: 238

CA3 throttle output voltage not changing

I have changed the min throttle output voltage and the max. The screen shows the throttle changing position so I know that is working. But when probing the signal and ground on the CA throttle out, the voltage isn't changing. I have a stand alone shunt that I am using. The throttle seems to be in pa...
by MorbidlyObeseKoala
Oct 08 2020 11:14am
Forum: Items for Sale - Used
Topic: SOLD - 72V ebike build in Northern California
Replies: 7
Views: 923

Re: 72V ebike build in Northern California

Very clean looking. What is the throttle? Did that come from Grin or somewhere else?
by MorbidlyObeseKoala
Oct 06 2020 10:12am
Forum: E-Scooter and Motorcycle General Discussion
Topic: QSmotor 8kw, how big battery needed?
Replies: 7
Views: 620

Re: QSmotor 8kw, how big battery needed?

Short answer: yeah maybe 70Ah would be a good start, probably wouldn't get you 100 miles on a full sized motorcycle because they are heavy. Here's a DIY build to show some of the work involved with a smaller motorcycle https://endless-sphere.com/forums/viewtopic.php?t=105659#p1546035 Longer answer: ...
by MorbidlyObeseKoala
Sep 25 2020 9:17am
Forum: E-Bike General Discussion
Topic: Any of you use T12 tips for soldering connectors? Which tips do you use?
Replies: 2
Views: 154

Re: Any of you use T12 tips for soldering connectors? Which tips do you use?

I ended up getting a C4 tip and that helped me a lot with the larger gauge wire and xt90 ends. Larger surface area for contacting all that metal. I'll have to see if I can find the series but I found a training video from a company that showed how to perfectly set those cups in xt60 and xt90 with so...
by MorbidlyObeseKoala
Aug 06 2020 4:03pm
Forum: E-Scooter and Motorcycle General Discussion
Topic: Mini Moto Build
Replies: 16
Views: 1547

Re: Mini Moto Build

Wow, that is a ton of photos. Good work, did you test your set up before everything was mounted and connected on the bike? Certainly don't have to but sure makes troubleshooting a lot easier when all the wires are laid out in front of you.

Looks like it will be a blast to ride once it is complete.
by MorbidlyObeseKoala
Jul 29 2020 12:57pm
Forum: Stand-up E-scooters and E-skateboards
Topic: Uberscoot/Mototec Electric Scooter Modifications
Replies: 5
Views: 1888

Re: Uberscoot/Mototec Electric Scooter Modifications

The dimensions are listed in mm on that specification sheet below the description. Had not heard of this company before, interested to hear your opinion when you get the battery
by MorbidlyObeseKoala
Jul 29 2020 12:38pm
Forum: E-Scooter and Motorcycle General Discussion
Topic: Mini Moto Build
Replies: 16
Views: 1547

Re: Mini Moto Build

That is a bit busy. You might have to reach out to the vendor for some advice. On my cheap chinese controller, the wire labelled "electric door lock" needed to see the full voltage from the battery to turn on. I spliced a small gauge wire from the main battery line into it and that woke it...
by MorbidlyObeseKoala
Jul 07 2020 3:57pm
Forum: Items for Sale - New
Topic: Tool battery (Makita) mounts for ebikes
Replies: 25
Views: 2044

Re: Tool battery (Makita) mounts for ebikes

I like how it looks simple and compact. I personally am a fan of powertool or module options. A little less initial cost for trying out this hobby or swapping between vehicles. Also, great idea making them mountable to the bottle cage mounts on most frames. Initial reaction is your price seems just ...
by MorbidlyObeseKoala
Jun 16 2020 9:21am
Forum: Battery Technology
Topic: 40T, neodymium magnets, plasti dip cycle test
Replies: 110
Views: 6177

Re: 40T, neodymium magnets, plasti dip cycle test

I am pretty interested in this concept. I know there is a majority here that say just get a spot welder but this offers more flexibility in swapping out a bad cell and doesn't need specialized tools to assemble. Additionally, if you were to change the shape of the battery for another application or ...
by MorbidlyObeseKoala
May 15 2020 12:34pm
Forum: Stand-up E-scooters and E-skateboards
Topic: The don of Razor e300's dual 6374 + vesc 6.6
Replies: 82
Views: 8244

Re: The don of Razor e300's dual 6374 + vesc 6.6

Here's a little calculator to help with power and gear selection. I think you'll have to put a fudge factor on there for efficiency losses, maybe something like 80% of the listed numbers. 18mph seems a bit low for the power and wattage, seems like you would be closer to 30. https://electricscooterpa...
by MorbidlyObeseKoala
May 12 2020 1:49pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Milwaukee M18 conversions
Replies: 14
Views: 3207

Re: Milwaukee M18 conversions

Have you continued to use old/broken tools for the metal tabs that slot into the battery? Very clean applications by the way, look very professional. I am always jealous of people's CNC routers and their creations
by MorbidlyObeseKoala
Apr 16 2020 10:51am
Forum: Vendor Relations Corner
Topic: Battery Clearing House
Replies: 11
Views: 957

Battery Clearing House

Found a new wholesaler for used lithium. Wondering if anyone had purchased cells from Batteryclearinghouse.com

Their prices seem pretty reasonable although most descriptions state the cells are estimated at ~80% capacity.
by MorbidlyObeseKoala
Apr 14 2020 10:56am
Forum: E-Scooter and Motorcycle General Discussion
Topic: Kawasaki KXF 250 QS 138 90H SEVCON conversion
Replies: 26
Views: 4846

Re: Kawasaki KXF 250 QS 138 70H conversion

Clean looking. Maybe this was answered elsewhere, what made you decide for a belt driven reduction? Why not run the sprocket off the motor?
by MorbidlyObeseKoala
Apr 07 2020 9:51am
Forum: Battery Technology
Topic: A123 NMC question
Replies: 12
Views: 409

Re: A123 NMC question

How much would you budget for say a 72V 16AH pack made from these cells?
by MorbidlyObeseKoala
Mar 31 2020 9:36am
Forum: E-Scooter and Motorcycle Photos & Videos
Topic: 2̶5̶k̶W̶ 5kW Electric Pitbike / Small Motorcycle
Replies: 19
Views: 1946

Re: 25kW Electric Pitbike / Small Motorcycle

What throttle did you use? Does the throttle feel pretty durable? The cheap scooter ones from ebay dont feel like they can take much abuse or bumps, not something you want to feel on a homemade contraption
by MorbidlyObeseKoala
Feb 21 2020 11:22am
Forum: E-Scooter and Motorcycle Photos & Videos
Topic: Ninja 250 "Clone" Made in China
Replies: 73
Views: 21883

Re: Ninja 250 "Clone" Made in China

Insulate with aerogel sheets? Where do you find those? I had seen a video about a smaller company that started making and tweaking the final composition so I assumed it was getting a little more affordable but not to the point where you could put it in a motorcycle. I'd love to put it in my walls at...
by MorbidlyObeseKoala
Feb 12 2020 5:25pm
Forum: Battery Technology
Topic: Homemade Battery Packs
Replies: 1681
Views: 517316

Re: Homemade Battery Packs

Curious if anyone else would recommend tinkering with those 40V ryobi packs to make a larger storage pack. I'm kind of torn between the power tool hot swap convenience versus an enclosed, well weather proofed system. I would be putting this in what is essentially a toy (mx650) so not loads of real e...
by MorbidlyObeseKoala
Jan 21 2020 1:31pm
Forum: Motor Technology
Topic: My1020 / Kunray / YaLU 1000 - 2000W motor ?
Replies: 75
Views: 10902

Re: My1020 / Kunray / YaLU 1000 - 2000W motor ?

Did you order that battery or make it yourself?
by MorbidlyObeseKoala
Jan 15 2020 1:07pm
Forum: E-Bike Technical
Topic: Looks like this is my next project: Razor RSF650
Replies: 75
Views: 11810

Re: Looks like this is my next project: Razor RSF650

Awesome work. Would love to see a top speed run. :bigthumb: Which wheel bearings did you use? Also would love to know alternatives for hydraulic brakes if you were to go down that road. I have a feeling some MTB hydraulics would do it, but would probably need a custom bracket. Either that or weld th...