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by neptronix
Aug 14 2019 7:48pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Lightweight efficiency oriented BikeE conversion
Replies: 39
Views: 1529

Re: Lightweight efficiency oriented BikeE conversion

What about offsetting the pack to the left to clear the chain? If it will still clear your legs and cranks, it won't change the handling significantly, and the change it does make you'll easily and quickly get used to. I thought about doing exactly that, and putting the controller ( likely my phase...
by neptronix
Aug 14 2019 7:40pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Lightweight efficiency oriented BikeE conversion
Replies: 39
Views: 1529

Re: Lightweight efficiency oriented BikeE conversion

So anyway, I think you should seriously consider an internal battery cause it would solve all your issues...and also cause I want to see someone else try it. :) Interesting. I thought maybe yours was a bit wider and it was easier to play with. I've never built a battery before and am a bit hesitant...
by neptronix
Aug 14 2019 7:39pm
Forum: E-Bike Build Threads / Photos & Video
Topic: High performance & durability Cannondale Semi Recumbent
Replies: 260
Views: 11203

Re: High performance & durability Cannondale Semi Recumbent

I suppose the KMX trikes breaking is no surprise. A weak design that's meant to twist around corners and is made out of aluminum.... i bet they fail on pedal power too. Occasionally bike makers do put out weak designs. Some of those treks snap behind the headtube on their own... certain years.. :con...
by neptronix
Aug 14 2019 5:52pm
Forum: Battery Technology
Topic: Nishi 18650 pack building kit
Replies: 35
Views: 1741

Re: Nishi 18650 pack building kit

Agnuism has just released the 21700 compatible NESE modules.

viewtopic.php?f=31&t=88051
by neptronix
Aug 14 2019 5:23pm
Forum: E-Bike General Discussion
Topic: Front suspension forks question
Replies: 43
Views: 1159

Re: Front suspension forks question

Not many thru axle mount motors out there. 14mm shaft is plenty strong with torque arms, unless you're pushing tons of power, which i wouldn't be doing in the first place with a front fork at all.
by neptronix
Aug 14 2019 4:16pm
Forum: E-Vehicles General Discussion
Topic: Wind and Solar vs Coal, Gasoline, Nuclear
Replies: 5106
Views: 200484

Re: Wind and Solar vs Coal, Gasoline, Nuclear

by neptronix » Aug 12 2019 5:28pm It got me thinking about how the difficulties we have with energy today are mostly a problem of scale. An average car on America's roads is 4000lbs and designed to seat 5 people, yet 90% of what cars are used for is getting back and forth to work, getting groceries...
by neptronix
Aug 14 2019 3:44pm
Forum: E-Bike General Discussion
Topic: Front suspension forks question
Replies: 43
Views: 1159

Re: Front suspension forks question

john61ct wrote:
Aug 14 2019 2:19pm
Solid front fork it is then.

Where can one obtain these?
Are you sure?
What kind of power will you be pushing and what speeds do you want to go?
by neptronix
Aug 14 2019 1:57pm
Forum: E-Bike General Discussion
Topic: Front suspension forks question
Replies: 43
Views: 1159

Re: Front suspension forks question

What is the best fork / dropout configuration for a powerful front hub motor? Are suspension forks stronger or weaker for that purpose than most steel-frame non-suspension forks? Suspension forks are weaker because of the materials they're made from. I wouldn't run a motor over 250w on one. dropout...
by neptronix
Aug 14 2019 1:54pm
Forum: E-Bike Build Threads / Photos & Video
Topic: High performance & durability Cannondale Semi Recumbent
Replies: 260
Views: 11203

Re: High performance & durability Cannondale Semi Recumbent

Yeah. I emailed a couple 22 inch rim makers about the depth of their rims and mentioned i wanted to fit it moto tires on and use them for an ebike and i got the same sort of responses too, except they were even less helpful. Couldn't even give me measurements about the rim depth. It makes me not wan...
by neptronix
Aug 14 2019 11:17am
Forum: E-Bike Build Threads / Photos & Video
Topic: Lightweight efficiency oriented BikeE conversion
Replies: 39
Views: 1529

Re: Lightweight efficiency oriented BikeE conversion

"battery mounting should be easy" - famous last words, said before i test fitted a hailong 'shark pack' in various locations. battery-mounting.jpg There is no happy ending here. The case adds a lot of width. I'd guess there's an extra 10-20mm of width added on to the 18650 cell's width. I noticed th...
by neptronix
Aug 13 2019 8:39pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Lightweight efficiency oriented BikeE conversion
Replies: 39
Views: 1529

Re: Lightweight efficiency oriented BikeE conversion

Ah yeah i'd already been there, and meant to say thanks for the link anyway ;) You are right about front wheelies. :( i got them to happen under pedal power and i'm a bit distraught over it. But i can prevent it from getting worse. Here are the things affecting the front rear balance: - i had the se...
by neptronix
Aug 13 2019 3:33pm
Forum: E-Bike Build Threads / Photos & Video
Topic: High performance & durability Cannondale Semi Recumbent
Replies: 260
Views: 11203

Re: High performance & durability Cannondale Semi Recumbent

I called Cannondale. In their opinion, any modification to the bike is unsafe, including a stiff front 20" that retains the same trail and fork height. Dude kept emphasizing that. I replied each time with.. 'okay, now that the lawyers are happy, what about x..' :lol: They say they never made 20" hea...
by neptronix
Aug 13 2019 3:05pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Lightweight efficiency oriented BikeE conversion
Replies: 39
Views: 1529

Re: Lightweight efficiency oriented BikeE conversion

OK... with a 16 x 2.125 tire on the front OE rim, i have about 5mm left on each side. So i ordered up a BMX oriented 16 x 2.25", and if i need to put a tiny divot in the fork to get the thing to fit, so be it. Going from a 1.5" to a 1.95" gave me a significant comfort increase, so i think adding ano...
by neptronix
Aug 13 2019 2:18pm
Forum: E-Bike Build Threads / Photos & Video
Topic: High performance & durability Cannondale Semi Recumbent
Replies: 260
Views: 11203

Re: High performance & durability Cannondale Semi Recumbent

It looks like i may have made a pretty big mistake in ordering a suspension fork. I did not account for something important. https://www.plunk.org/eben/Albums/BikeE/Thumbnails/4.jpg On the cannondale, the pedals also cross the path of the fork. But it's too soon to say if this will be an issue; the ...
by neptronix
Aug 13 2019 10:49am
Forum: E-Bike Build Threads / Photos & Video
Topic: Lightweight efficiency oriented BikeE conversion
Replies: 39
Views: 1529

Re: Lightweight efficiency oriented BikeE conversion

If i'm understanding you correctly, i need to make sure the trail doesn't grow or change too much. This makes me think that a BMX fork with a super short offset would maintain the original trail... hm? https://p.vitalbmx.com/photos/forums/2018/01/05/57141/s1200_9126059.jpg I think that even if the s...
by neptronix
Aug 12 2019 11:58pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Lightweight efficiency oriented BikeE conversion
Replies: 39
Views: 1529

Re: Lightweight efficiency oriented BikeE conversion

Holy shit guys, the Bike E is a riot to ride! bike-e-adjusted.jpg I've got some aero oriented handlebars on it, and attached the original rear bag. Although, the bag has sort of a strange fit on the bike. However, the bag has the carrying capacity of a small toolbox, so that's pretty rad. bikee-bag....
by neptronix
Aug 12 2019 11:41pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Lightweight efficiency oriented BikeE conversion
Replies: 39
Views: 1529

Re: Lightweight efficiency oriented BikeE conversion

That looks like a fun project. Way back in the day, I had a sketch of a recumbent based on an Ebike design. It looked like that, only with a longer rear swing arm and the tail of the frame clipped. OK, so also I wanted to fit a new-at-the-time 36" Unicycle wheel to the rear, and keep the 16" front....
by neptronix
Aug 12 2019 7:44pm
Forum: E-Bike Technical
Topic: Should the motor winding be shorted to motor axle?
Replies: 6
Views: 236

Re: Should the motor winding be shorted to motor axle?

I wouldn't bother rewinding it because new magic pies have 0.35mm laminations and the performance and efficiency will be significantly better. A 30mm wide DD ( MXUS, 9C, leafmotor, etc ) would actually have as much continuous power as your magic pie did ( because thin lams ), so you can either gain ...
by neptronix
Aug 12 2019 7:28pm
Forum: Motor Technology
Topic: APL's DIY axial-flux motor
Replies: 582
Views: 27726

Re: APL's DIY axial-flux motor

A MAC motor does the same thing on the bench at no-load. It just takes longer. And that's a pretty decent motor, efficiency wise.
Some high efficiency motors do that.

Just FYI. :)
by neptronix
Aug 12 2019 7:22pm
Forum: Battery Technology
Topic: Nishi 18650 pack building kit
Replies: 35
Views: 1741

Re: Nishi 18650 pack building kit

The goal of solderless / no-weld connections is too important to allow negativity to discourage innovative experimentation. I agree. :thumb: these things should be explored. Making 18650/21700 packs easier to build is a holy grail for us builders these days. I don't have any confidence in this appr...
by neptronix
Aug 12 2019 6:33pm
Forum: E-Bike Build Threads / Photos & Video
Topic: High performance & durability Cannondale Semi Recumbent
Replies: 260
Views: 11203

Re: High performance & durability Cannondale Semi Recumbent

Clever, and i'm sure it would actually work on a bike like mine, since so little weight rests on the front tube.
On the cannondale though, the fork's tube is of an oddball size. About 1.55 inches..
cannondale-headset.jpg
cannondale-headset.jpg (139.06 KiB) Viewed 424 times
Not quite 1 5/8 inches. Not quite 1 1/2 inches. :roll:
by neptronix
Aug 12 2019 6:19pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Bacchetta Giro | BBSHD | 14s7p 35E | 500w PAS
Replies: 8
Views: 642

Re: Bacchetta Giro | BBSHD | 14s7p 35E | 500w PAS

I also had to get rid of the 26 x 1.25 tires at 90 psi, which work great at human power speeds. A 26 x 1.8 at 60 psi made all the difference. All things considered, this is the most advanced user bike ever. It has a vary sharp learning curve, especially if your electric and clipped in. It requires ...
by neptronix
Aug 12 2019 5:28pm
Forum: E-Vehicles General Discussion
Topic: Wind and Solar vs Coal, Gasoline, Nuclear
Replies: 5106
Views: 200484

Re: Wind and Solar vs Coal, Gasoline, Nuclear

At a local google STEM PR event, i was talking shop to a guy running a solar panel company's booth. Of course the conversation turned to electric cars and electric bikes. After showing some pictures of what i'd built, he decided to hand me one of these solar car toy thingies as a thanks for showing ...
by neptronix
Aug 12 2019 4:15pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Bacchetta Giro | BBSHD | 14s7p 35E | 500w PAS
Replies: 8
Views: 642

Re: Bacchetta Giro | BBSHD | 14s7p 35E | 500w PAS

Cool ride. Being able to hit 40mph, with your gearing being the limit, on a BBSHD is pretty rad. But maybe a bit excessive considering the capabilities of the frame itself, no?