Search found 209 matches

by PaulD
Nov 03 2014 1:57pm
Forum: E-Bike Non-hub Motor Drives
Topic: LightningRods mid drive kit
Replies: 4955
Views: 526967

Re: LightningRods mid drive kit

Cool. The Atoms and all the fancy manufacturing equipment that went along with them were before my time. I think an electric Atom would be a blast.
by PaulD
Nov 03 2014 12:01pm
Forum: E-Bike Non-hub Motor Drives
Topic: LightningRods mid drive kit
Replies: 4955
Views: 526967

Re: LightningRods mid drive kit

Thanks guys. LR, I have about 1" of adjustment of the belt tension, and yes, the nominal C-C distance is 4.625" or so. You can see how it pivots in the RHS view. I can't get that pic to show up inline with the post for some reason, so you have to click it. I don't think Brammo would ever do ebikes, ...
by PaulD
Nov 03 2014 10:20am
Forum: E-Bike Non-hub Motor Drives
Topic: LightningRods mid drive kit
Replies: 4955
Views: 526967

Re: LightningRods mid drive kit

I received a motor and pulleys from LR last week while I wait for my kit, so I decided to throw together some mounting ideas that I think would make for a sturdy, easy to adjust kit. I wanted to shorten the secondary chain quite a bit and make everything a lot more compact to make it stiffer and lig...
by PaulD
Oct 07 2014 7:33pm
Forum: Items for Sale - New
Topic: ES Shirts Are In! Order Today! 3 for $15
Replies: 82
Views: 8480

Re: ES Shirts. Not Vaporware.. Its going down.

I'm in for a small too.
by PaulD
Aug 29 2014 2:48pm
Forum: E-Bike Build Threads / Photos & Video
Topic: ML DH Comp Cromotor Max-e Build
Replies: 30
Views: 6981

Re: ML DH Comp Cromotor Max-e Build

It was great to meet you and your classmates! And thanks for bringing your bike. Too bad I couldn't make it to the ride. I heard you guys had car trouble, hope you made it home alright!
Great dyno vid, by the way.
by PaulD
Aug 20 2014 6:27pm
Forum: Battery Technology
Topic: Do cells on final connection before controller work harder ?
Replies: 58
Views: 4088

Re: Do cells on final connection before controller work hard

OK, the quick sketch I've put togther is attached. To keep things simple, let's first discuss a 1P pack--no parallel cells to complicate things. Interesting idea, but I can't really see why the end cells would see more abuse besides additional heating from a high impedance connection to a busbar. T...
by PaulD
Jul 10 2014 6:36pm
Forum: E-Bike Non-hub Motor Drives
Topic: New Bafang Crank-Drives
Replies: 4435
Views: 666989

Re: New Bafang Crank-drives

Are the units loosening the first (two lock rings) or latest design (lock ring and threaded cap)? I have the old design... I didn't realize there was a new one, but I found a pic here: https://lh5.googleusercontent.com/-5XmVivdk4tA/U5QfQnJ5opI/AAAAAAAALw0/BEewHLTQYBw/w1030-h774-no/P1010374.JPG Look...
by PaulD
Jul 10 2014 5:31pm
Forum: E-Bike Non-hub Motor Drives
Topic: New Bafang Crank-Drives
Replies: 4435
Views: 666989

Re: New Bafang Crank-drives

Is anyone using threadlocker on the bottom bracket main lock nut. Mine has come loose twice now so i'm thinking to lock it but I'm worried if I have to remove it for any reason. Mine slowly works its way loose as well and starts creaking. I plan on trying locktite. I think the way that the kit fits...
by PaulD
Jul 08 2014 2:11pm
Forum: Battery Technology
Topic: My try on no solder/no weld 18650
Replies: 27
Views: 2979

Re: My try on no solder/no weld 18650

our production blocks will be compression molded (can't 3d print the thermal plastic as it only comes in pellets and requires high pressure to achieve good thermal conductivity ~ 5 W/mK). the cell holder acts as a heat sink which is essential when using some of the newer 30A discharge cells. Nice w...
by PaulD
Jul 01 2014 12:41pm
Forum: Battery Technology
Topic: The Cycle Satiator, universal charger for the enthusiasts
Replies: 713
Views: 106638

Re: The Cycle Satiator, universal charger for the enthusiast

Mine came in the mail yesterday and I immediately made a custom 4.15V/cell 8A profile to top up my 36V bike. Works great, the interface is nice and intuitive. Will do a full charge soon to see how hot it gets. As others have mentioned, it feels really solid and build quality looks good. I'm contempl...
by PaulD
Jun 19 2014 3:40pm
Forum: E-Scooter and Motorcycle General Discussion
Topic: Electric Harley.
Replies: 98
Views: 10609

Re: Electric Harley.

spinningmagnets wrote:If it was Brammo, PaulD needs to post up and clue us in with the details!
The rumor is that it is a Mission Motors drivetrain. Not sure about the battery.
by PaulD
Jun 04 2014 6:24pm
Forum: E-Bike Non-hub Motor Drives
Topic: LightningRods mid drive kit
Replies: 4955
Views: 526967

Re: LightningRods mid drive kit

I found that I need a rotary table for my mill to finish the motors. I ordered one Saturday. I called today to see if it had shipped. They were just getting around to ordering it today and it would be at their location (Florida, the opposite corner of the US from me) NEXT TUESDAY. And then 5 days U...
by PaulD
May 26 2014 7:59pm
Forum: Battery Technology
Topic: The Cycle Satiator, universal charger for the enthusiasts
Replies: 713
Views: 106638

Re: The Cycle Satiator, universal charger for the enthusiast

Awesome work, Justin. It's really impressive to get something like this in production with all of the approvals with a small team. Bravo!
I have a few low voltage bikes, so this will be perfect for my needs.
by PaulD
May 26 2014 2:34pm
Forum: General Discussion
Topic: Ebikes at Maker Faire Bay Area 2014
Replies: 4
Views: 420

Re: Ebikes at Maker Faire Bay Area 2014

It is indeed possible. :-) I might ride up with no power assist just to make it more challenging. ;-) The headwinds if you are traveling north along the oregon coast will be challenging enough! Sounds like a fun trip. Let me know if you give it a go, and maybe i'll join you for part of the trip! Be...
by PaulD
May 16 2014 7:21pm
Forum: E-Bike Non-hub Motor Drives
Topic: LightningRods mid drive kit
Replies: 4955
Views: 526967

Re: LightningRods mid drive kit

I'm completely willing to try another shop. My current shop does great work but they definitely act like they are doing me a huge favor by doing my $1,000- $2,000 jobs. Thanks for the referral! Other local shops I would try are LCSI (http://www.lasercuttingservices.com) who usually have a one week ...
by PaulD
May 16 2014 9:36am
Forum: E-Bike Non-hub Motor Drives
Topic: NAHBS 2014 mid-drive build
Replies: 39
Views: 5278

Re: NAHBS 2014 mid-drive build

Paul, you (well, your bike did) made the centerfold in the June Issue of Electric Bike Action Magazine! Congratulations! Thanks Larry! I was super pumped to see that. Too bad the caption had so many errors, but hey, I can't complain! Also, I realized I had promised CAD images a month ago. I posted ...
by PaulD
Apr 05 2014 10:17pm
Forum: E-Bike Non-hub Motor Drives
Topic: NAHBS 2014 mid-drive build
Replies: 39
Views: 5278

Re: NAHBS 2014 mid-drive build

So how about some more detail? It would be great to see this in cad form to better understand just how everything is working. Is it only a one off or is green pea bikes part of a bigger plan? What about using an open source business model like that of Local Motors, makers of the Rally Fighter kit c...
by PaulD
Mar 29 2014 12:15pm
Forum: E-Bike Non-hub Motor Drives
Topic: NAHBS 2014 mid-drive build
Replies: 39
Views: 5278

Re: NAHBS 2014 mid-drive build

Hi Paul, In one of the photos you are machining what appears to be the motor shaft, with the magnets exposed. If I am right, is there any problem with swarf sticking to the magnets? I had assumed that it would be an issue to keep the magnets clean. Thanks, Dave R Yup, that is rather embarassing. :o...
by PaulD
Mar 28 2014 10:25am
Forum: E-Bike Non-hub Motor Drives
Topic: NAHBS 2014 mid-drive build
Replies: 39
Views: 5278

Re: NAHBS 2014 mid-drive build

yawstick wrote:Wish I had known about this event.... Charlotte is very close by... do they always have the event in Charlotte.
NAHBS is in a different city each year. Next year it's in Louisville... I was hoping it would come back to the west coast, maybe in 2016!
by PaulD
Mar 27 2014 2:39pm
Forum: E-Bike Non-hub Motor Drives
Topic: NAHBS 2014 mid-drive build
Replies: 39
Views: 5278

Re: NAHBS 2014 mid-drive build

That is a really tidy clean build! Awesome, well done! I spotted the tandem eccentric used as a chain tension adjuster, I have some identical ones here I have just bought for the same purpose! Did you use a bottom bracket as the jack shaft? Thanks! I bored out the bb threads so I could press in bea...
by PaulD
Mar 27 2014 12:28pm
Forum: E-Bike Non-hub Motor Drives
Topic: NAHBS 2014 mid-drive build
Replies: 39
Views: 5278

Re: NAHBS 2014 mid-drive build

One correction however, brazing (despite the name) uses BRONZE rod, not brass, as the filler material. Bronze is stronger and more corrosion resistant than brass. Hi Drum, The terminology of brazing alloys is rather confusing. I used C-04 brazing rod from http://www.gasflux.com/brazing.html. It is ...
by PaulD
Mar 27 2014 12:22pm
Forum: E-Bike Non-hub Motor Drives
Topic: NAHBS 2014 mid-drive build
Replies: 39
Views: 5278

Re: NAHBS 2014 mid-drive build

I am confused...no news there...how do you wire up 40 cells to get a "48" volt system? https://scontent-b-sea.xx.fbcdn.net/hphotos-ash3/l/t1.0-9/1148945_304823673004325_2135313330_n.jpg Good eye, Warren. That is the first prototype pack when I was running at 36V. I was so rushed I didn't take pictu...
by PaulD
Mar 27 2014 12:23am
Forum: E-Bike Non-hub Motor Drives
Topic: NAHBS 2014 mid-drive build
Replies: 39
Views: 5278

Re: NAHBS 2014 mid-drive build

Wow!! That's such a light bike for having a very useful amount of battery on board! Fantastic job as usual my friend! I love the picture of your Dog with the brazed frame, something is very artistic about it. You and your lady and dog are always welcome to visit again anytime you like. :-) Thanks b...
by PaulD
Mar 26 2014 8:05pm
Forum: E-Bike Non-hub Motor Drives
Topic: NAHBS 2014 mid-drive build
Replies: 39
Views: 5278

Re: NAHBS 2014 mid-drive build

Paul, An absolutely gorgeous bike. I saw the show when it was in Richmond, Virginia in 2010. Handbuilt craftmanship to make you cry. Glad to see more e-assist entries. Is 38 pounds with the battery pack installed? If so, how many Wh is the pack? Thanks Warren. There were some amazing bikes at the s...
by PaulD
Mar 26 2014 11:34am
Forum: E-Bike Non-hub Motor Drives
Topic: NAHBS 2014 mid-drive build
Replies: 39
Views: 5278

Re: NAHBS 2014 mid-drive build

Thanks guys. The true artist is the industrial designer, Michael Hritz. You can see some of his other work here: https://www.facebook.com/michaelhritzart I just took his art and made it into an ebike. Oh and that is my girlfriends dog, Molly. She's a sweet dog, and is far more photogenic than me. Lu...