Search found 343 matches

by EBJ
Jan 27 2018 4:29pm
Forum: Electric Watercraft
Topic: Mini Boat
Replies: 4
Views: 1066

Re: Mini Boat

That's awesome!! I'm getting ready to build a jet boat from the bottom half of a jet ski hull Thanks. I imagine a jet ski hull is an excellent starting point for a mini jet-boat. I've seen a few other mini jet boats made from Aluminum, which is much better for dragging across rocks than fiberglass....
by EBJ
Jan 26 2018 6:30pm
Forum: Electric Watercraft
Topic: Mini Boat
Replies: 4
Views: 1066

Mini Boat

http://rapidwhale.com/images/mini-boat.jpg It's been a while since I've had an EV project, but I just completed my electric mini boat and thought I'd share it here. Story: I'd always been interested in mini boats ever since I had seen Paul Elkin's. His boat stuck with me for a few years, and then a...
by EBJ
Nov 15 2013 3:38am
Forum: Battery Technology
Topic: black friday
Replies: 10
Views: 857

Re: black friday

I don't know where you live, but where I live that term usually means there has been a bloody big bush fire and people have been killed and many homes burnt down..... what Friday are you referring too??? and where?? interesting. Learning something new every day. - Thanks for posting to the both of ...
by EBJ
Oct 24 2013 10:21pm
Forum: Stand-up E-scooters and E-skateboards
Topic: Kickr - west coast meetup 12/24 - 1/02
Replies: 41
Views: 6586

Re: kickr - friction drive skateboard

Thanks.. actually 65 kits! 10 completes. We are pretty excited to get the ball rolling with this concept. I may point people to a new thread on ES on Kickr development/support. It could act as a sort of blog/technical reference area. Awesome. Good luck guys, I threw a few bucks your way. looking fo...
by EBJ
Sep 25 2013 2:35pm
Forum: E-Vehicles General Discussion
Topic: Chevy Spark EV
Replies: 50
Views: 4567

Re: Chevy Spark EV

I almost purchased the Spark (non-electric), but ended up going w/ a Prius C hybrid. Since I have nowhere to charge, a Spark EV wasn't a great option for me. (If Chevy made a hybrid Spark, it would have been a harder decision) Anyhow, Very excited about the Chevy Spark EV. ... just wish I had a conv...
by EBJ
Sep 18 2013 4:22pm
Forum: E-Vehicles General Discussion
Topic: Lifetime $ costs: Tacoma vs Prius C vs Leaf vs Model S
Replies: 0
Views: 766

Lifetime $ costs: Tacoma vs Prius C vs Leaf vs Model S

I just spent a good deal of time putting together this e-mail and thought I'd post it here for anyone else to look at. This was an e-mail response to: "My Tacoma is cheaper to operate (daily and over it’s lifetime) will go (and has gone) more places than most Teslas. It’s been up and down the BAJA p...
by EBJ
Sep 18 2013 11:26am
Forum: EV Business World
Topic: Ecotality, Maker of BLINK Chargers Files Bankruptcy
Replies: 1
Views: 1086

Ecotality, Maker of BLINK Chargers Files Bankruptcy

http://www.blogcdn.com/green.autoblog.com/media/2010/07/blink-commercial-charger---630.jpg "Ecotality Inc. (ECTY:US), a maker of charging stations for electric cars, filed for bankruptcy with plans to sell itself at a court-supervised auction to pay off debt. A unit of the company, Electric Transpo...
by EBJ
Sep 11 2013 5:25pm
Forum: Stand-up E-scooters and E-skateboards
Topic: TLT - 3 wheeler with tilting wheels, gas/electric
Replies: 8
Views: 2250

Re: TLAT - 3 wheeler with tilting wheels, gas/electric

loving this thing.
Very cool.

Nice find Sk8
by EBJ
Aug 26 2013 4:47pm
Forum: Stand-up E-scooters and E-skateboards
Topic: Kickr - west coast meetup 12/24 - 1/02
Replies: 41
Views: 6586

Re: kickr - friction drive skateboard

I really like the idea of kick to the desired speed, then maintain. To slow down you could use the same thinking and say if the person takes a foot off and touches the ground it will slow down the set point and then maintain again. This would be a natural way to get rid of those pesky wireless cont...
by EBJ
Aug 22 2013 2:49pm
Forum: Stand-up E-scooters and E-skateboards
Topic: Kickr - west coast meetup 12/24 - 1/02
Replies: 41
Views: 6586

Re: kickr - friction drive skateboard

Pretty neat concept. I couldn't tell how speed was controlled, but i think it would be ideal if it acted as a "cruise-control" for longboards. Kick to desired speed. Motor holds that speed. But then I would also like to see: - some sort of brake implemented. - a way to "cock" the drive-wheel mechani...
by EBJ
Aug 16 2013 11:45pm
Forum: Battery Technology
Topic: HobbyKing battery horrible RMA process
Replies: 26
Views: 1622

Re: HobbyKing battery horrible RMA process

Luckily I'm close enough where if I'm going to be making a large enough order, I'd drive to Lakewood to checkout the merchandise given their overall failure rate in my recent experience. Well then my advice to you: Don't pick up anything with a cell voltage difference of greater than .020V. Sift th...
by EBJ
Aug 16 2013 7:59pm
Forum: Battery Technology
Topic: HobbyKing battery horrible RMA process
Replies: 26
Views: 1622

Re: HobbyKing battery horrible RMA process

I figured I'd chime in. A while back I ordered about 110 of the Turnigy LiPo batteries from HK. Of those, I tested and returned about 40 of them . That's a 36.4% defect-rate . I cycle-tested each pack 3 times. I had 8 hyperion-chargers running at the same time and it was still a huge time-sink (I wa...
by EBJ
Aug 05 2013 2:40pm
Forum: E-Vehicles General Discussion
Topic: Prius C - 51.6 MPG
Replies: 6
Views: 1405

Re: Prius C - 51.6 MPG

CleverMonkey wrote:A quick search on Google turned up this plugin kit:
1.7KW DIY kit for $3,400.

http://www.pluginsupply.com/pricing/
I'm going to need to need a good deal of convincing before I start modding this 20K dollar vehicle... and mods aren't likely to happen until after the warranty period.
by EBJ
Aug 05 2013 2:38pm
Forum: E-Vehicles General Discussion
Topic: Prius C - 51.6 MPG
Replies: 6
Views: 1405

Re: Prius C - 51.6 MPG

Cool ^_^ What's your driving pattern? mostly city, mostly highway, some combination of both? and what's your highway cruising speed? mostly city. (with the exception of my latest road-trip to Yosemite) I cruise on the freeways at 65 mph. So far, I've been seeing about 54 mpg in the city , and 48 mp...
by EBJ
Jul 29 2013 7:15pm
Forum: E-Vehicles General Discussion
Topic: Prius C - 51.6 MPG
Replies: 6
Views: 1405

Prius C - 51.6 MPG

My wife and I purchased a 2013 Prius C - level II. We just filled-up for the first time since purchasing, and did: 411 miles ( Approx 75% city-miles, 25% highway-miles ) w/ 7.968 gallons = 51.6 MPG . We would have gone for a Nissan Leaf, but have no means of plugging it in at home. Anyhow, we are to...
by EBJ
May 10 2013 5:25pm
Forum: Stand-up E-scooters and E-skateboards
Topic: What happened to the Dirtsurfer? Alternatives?
Replies: 26
Views: 6868

Re: What happened to the Dirtsurfer? Alternatives?

That MXB things looks awesome.
You may be hard-pressed to build something of a similar quality for 3K...actually it looks to be 2.7K on their website.
Might just wanna consider saving up for one of those.
by EBJ
Apr 26 2013 2:46pm
Forum: Stand-up E-scooters and E-skateboards
Topic: Weight Sensing Longboard with Inline Wheel Motors
Replies: 166
Views: 42851

Re: Weight Sensing Longboard with Inline Wheel Motors

sk8norcal wrote: i think when i test rode ur board,
wasn't it soft start?
u had it on beginner mode if i recall.
maybe i am mixing soft vs smooth
Yeah, you rode it. No soft-start and no beginner-mode.
Just clean and smooth (linear) acceleration.
by EBJ
Apr 26 2013 1:23pm
Forum: Stand-up E-scooters and E-skateboards
Topic: Weight Sensing Longboard with Inline Wheel Motors
Replies: 166
Views: 42851

Re: Weight Sensing Longboard with Inline Wheel Motors

Despite the cool-factor of a weight-sensing throttle, I think I'd prefer a tiny little remote hand-throttle like these Kickstarter folks use: I would agree with you on this one, but if anyone is going to make a "lean to accelerate" skateboard to change my mind, it's going to be Justin. Also having ...
by EBJ
Apr 24 2013 7:00pm
Forum: Stand-up E-scooters and E-skateboards
Topic: Weight Sensing Longboard with Inline Wheel Motors
Replies: 166
Views: 42851

Re: Weight Sensing Longboard with Inline Wheel Motors

Awesome Justin.
Would love to see some more of this thing.
Perhaps you will have it at the Bay Area Maker Faire?
by EBJ
Apr 10 2013 3:28pm
Forum: Battery Technology
Topic: Solid performing Lipos
Replies: 40
Views: 1864

Re: Solid performing Lipos

I'd be curious to know what the reject-rate is. (how many come with dud- (or slacker) cells). - Of the cells you purchased, how many were within a reasonable balance at the start? - Did you happen to plot any discharge/charge curves with the packs? - Do you have any slacker-cells in your current pac...
by EBJ
Apr 06 2013 4:17pm
Forum: Battery Technology
Topic: Hyperion 1420 charger Now declared officially Junk by me!
Replies: 101
Views: 4654

Re: Hyperion 1420 charger Now declared officially Junk by me

docnjoj wrote:ThanksEBJ but I do have 5.82 installed now and it was fussy!
I have 5.58 (the prior updated firmware). One step between what yours came with and what you now have.
by EBJ
Apr 06 2013 12:10pm
Forum: Battery Technology
Topic: Hyperion 1420 charger Now declared officially Junk by me!
Replies: 101
Views: 4654

Re: Hyperion 1420 charger Now declared officially Junk by me

Are you happy with the 1420? Yep. I've set up 14 of them for charging e-bike sized packs. Of those 14, I had 1 give V readings that were 0.020 off. That one was replaced without question by the supplier. All of the others were within 0.010V, which I deemed perfectly fine for my use. If you were try...
by EBJ
Apr 06 2013 11:50am
Forum: Battery Technology
Topic: Hyperion 1420 charger Now declared officially Junk by me!
Replies: 101
Views: 4654

Re: Hyperion 1420 charger Now declared officially Junk by me

The R/C folks were the first to notice these problems and there is a ton of information on their problems that are similar to mine. No solutions except speculation and the upgrade (or even downgrade) for the Firmware. Crazy! otherDoc I have firmware version 5.58 and it works great. I have updated 1...
by EBJ
Apr 04 2013 12:58pm
Forum: Battery Technology
Topic: Looking for a small, portable, non-balancing Charger.
Replies: 33
Views: 2056

Re: Looking for a small, portable, non-balancing Charger.

if you have the switch on the end, then leave it turned off when you plug the charger into the AC plug. turn it on before connecting the battery. The switch on the back starts the charging process. Turning it on before I plug it into my battery sounds like a bad idea. Thanks for the Thermistor offe...