Power in Flux

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EVcycle replied to the thread The Juiced Drag bike progress post.
" Just in case you wanted to see the battery/controller supports. They will get installed tomorrow
and then all the major components will be in the bike.

Attachment 7648 "

49 Minutes Ago

Nicman clicked Likes for this post: Leaf pack by Warren

4 Hours Ago

Ted Dillard replied to the thread Greetings from Ohio.
"
Quote Originally Posted by nedfunnell View Post
2. ZEV. I met the owner and got to see some of his scooters a few years back at the Vetter Challenge. He makes some stupendous claims about his products that aren't true. Doesn't mean they don't work, and really, if they work half as well as claimed, that's still decent- but his claims are just so outrageous that they defy possibility. Both scooters he brought failed to finish the course, and I personally measured the input power to his chargers as part of the competition, and the power factorwas garbage, like .64 or something. His products are in inexpensive imported stuff. Again, they may work great- but know that you need to apply Chinese Manufacturer Derating (-50%) to any performance claims.
Thanks SO MUCH for validating what I've been saying all along. At one point I wanted to meet the guy, just to see if he was as full of crap as I'd come to the conclusion he was, but to go to see him from Boston just to prove a point seemed a waste of time. The horse has been beat to death, but you're the first person who's posted who has actually met the guy. "

1 Day Ago

Stevo clicked Likes for this post: Greetings from Ohio by nedfunnell

1 Day Ago

Richard230 replied to the thread Electric motorcycle racing article.
" Here is an article about another electric racer that you can add to the ones mentioned in the previous article: https://electricmotorcycles.news/ele...ric-superbike/ "

1 Day Ago

nedfunnell replied to the thread Greetings from Ohio.
" I'll chime in here with a opinion real quick.

1. Building your own is great, but if you can find what you want already done (or ready for a rework), you'd spend a lot fewer hours driving to get it than you would building your own, even if it is across the country! If there are any Vectrix scooters to be found anywhere, it'd be a lot simpler and quicker than a DIY job! Now, if DIY is more fun for you, then go for it.

2. ZEV. I met the owner and got to see some of his scooters a few years back at the Vetter Challenge. He makes some stupendous claims about his products that aren't true. Doesn't mean they don't work, and really, if they work half as well as claimed, that's still decent- but his claims are just so outrageous that they defy possibility. Both scooters he brought failed to finish the course, and I personally measured the input power to his chargers as part of the competition, and the power factorwas garbage, like .64 or something. His products are in inexpensive imported stuff. Again, they may work great- but know that you need to apply Chinese Manufacturer Derating (-50%) to any performance claims. "

1 Day Ago

Stevo replied to the thread Greetings from Ohio.
"
Quote Originally Posted by Spoonman View Post
Mega jealous at the easy access to 18650 cells - they pack a mean punch.
Lot of work putting them together, and you'll have to keep a good mind to heat shedding, but absolutely the most energy and power dense way to go right now.
I can't wrap my head around the thought of monitoring and balancing all of those little flashlight batteries wired in parallel. I think THAT is a the most difficult part to using 18650's, IMHO. "

2 Days Ago

Stevo clicked Likes for this post: Greetings from Ohio by Spoonman

2 Days Ago

Spoonman replied to the thread Greetings from Ohio.
" Mega jealous at the easy access to 18650 cells - they pack a mean punch.
Lot of work putting them together, and you'll have to keep a good mind to heat shedding, but absolutely the most energy and power dense way to go right now. "

2 Days Ago

Spoonman clicked Likes for this post: Electric motorcycle racing article by Richard230

2 Days Ago

Stevo clicked Likes for this post: Electric motorcycle racing article by Richard230

3 Days Ago

Richard230 created the thread Electric motorcycle racing article.
" Motorcycle.com has penned an article about electric motorcycle racing which includes a neat video showing the Mugen being raced around the IOM.
http://www.motorcycle.com/mini-featu...big-thing.html "

4 Days Ago

EVcycle clicked Likes for this post: The Juiced Drag bike progress post by Stevo

4 Days Ago

Stevo replied to the thread The Juiced Drag bike progress post.
"
Quote Originally Posted by EVcycle View Post
I will let you know once we get it to the track.

Short power wires......
^^^^ Nice tip. I've been thinking of this as I design my batt box.

It's coming along nicely! "

4 Days Ago

EVcycle replied to the thread The Juiced Drag bike progress post.
" I will let you know once we get it to the track.

I will need to play with the programming. I gather yours will be more of a street application?

Short power wires...... "

5 Days Ago

aggrc replied to the thread The Juiced Drag bike progress post.
" Sounds like you are moving right along! My project (another EX500) is using the same motor and controller. Id be interested in any tips and tricks you develop to get the most power out of it. "

5 Days Ago

pyromancy5 replied to the thread Greetings from Ohio.
" Welcome. I'm also new to this, and in the Columbus area. I'm project planning at the moment. My plan is to build packs from 18650 cells that I'm harvesting from medical packs. I'm in the research stage, looking at BMS options at the moment, and still trying to decide on if I want to convert my nicely running ICE bike, or if I'm going to pick up a donor frame to build on. A scooter build is appealing as well. Can't wait to hear more about your project. Alex "

5 Days Ago

nedfunnell created the thread Stuttering with PMDC bike.
" Hey y'all, I am experiencing an issue with my bike that I want to see if anyone might know about. I have very rough power delivery when applying throttle. It previously was very smooth and linear, but now it's very choppy.

My setup:
ME0709 (updated brushes)
Alltrax AXE7234
Domino throttle
22s Leaf cells

I experience it more at partial throttle, under 55mph- but it may just be smoothing out with greater intertia at that point, or when the controller is at 100% duty cycle. I plan to get into it later this week and see if there is anything obvious like loose connections, but I would appreciate any tips on things to look for.

I am slightly suspicious of the Domino throttle since I laid it down on that side and the throttle may not have liked the shock. I am going to try and find an old analog multimeter so I can see how smooth the resistance sweep is from 0-100%. "

6 Days Ago

EVcycle replied to the thread The Juiced Drag bike progress post.
" Weekly update,

Front brake mount designed,built and installed, Front brake lines ordered, Rear brake assembly ordered.

Battery mounts designed, welded up and installed. Body design determined ( we will do a wrap for this project)

It looks like we will have to shorten the motor wires. Good thing we kept the heavy duty crimper from the last project.

The batteries and controller in the photo are just in the bike for layout purposes. We will do a finally install after it is all wired up.


Attachment 7646 "

6 Days Ago

Nicman clicked Likes for this post: Chevy Bolt cell specs? by Ted Dillard

6 Days Ago