Unconventional places to stick the batteries

[yaemes]

Where are some crazy unconventional places to stick the batteries?

My best idea would be: As the bike is getting manufactured, cylindrical cells are inserted into the frame. The frame is the ground, and the power wire goes out the seatpost. Good stuff there, but impossible for the average person to do!

What are some other ideas?

 

[LI-ghtcycle]

Have you seen where Timma2500 has both the batteries and the motor of his custom frame Specialized FSR with cyclone?
http://endless-sphere.com/forums/viewtopic.php?f=28&t=23409&start=15

I'm on a friend's borrowed Lap-top atm, and it's got this new google OS, so not sure how to post a pic here, but go on that link and you will see one of if not the most elegant IMHO E-Bike frame designs made. It's really amazing how well it goes together form and function!

I like your concept of using the frame as part of the grounding, the only thing I see wrong however, is in the even of an accident greater possibilities of a short.

 

[yaemes]

Props to the man for serious technical skills, but that is not stealth! I'm talking cylindrical cells throughout the entire frame, then you'd never know they're there!

 

[Drunkskunk]

I can think of some unconventional places to stick your battery. NSFW.



Someone on here a few years ago did that with a chopper style fork for part of his battery.
A2B hides it's battery in the frame.
Old Tidal Force hid their battery in the front wheel hub

 

[dogman dan]

I don't have the link, but the guy that mounted batteries to the bottom of his front forks takes the prize for me. Looked like he was going to scoop up cats and chihuahuas as he rode.

He swore it handled great. Riiiiiiight. :lol:

 

[jimw1960]

A guy named knuckles hid the batteries inside the fork tubes of his Nirve Chopper a few years back. Here is the link.

http://endless-sphere.com/forums/viewtopic.php?f=6&t=4160

I never heard how reliable the setup was, though. There was no room for a BMS, so he had to remove the batteries for occasional balancing.

 

[John in CR]

Until I found out that the pouch cells need compression, I often thought of taking them packs apart and overlap them like shingles using fiberglass impregnated with epoxy to bond them into sheets and build a fairing out of the cells themselves.

At some point some smaller format lipo bricks are going to get cheap enough to do overlapping bricks wrapped in fiberglass to become the structure frame members of a bike to take the place of much of the tubing. Smaller format packs so they stack in a few layers of overlap to create square or near square tubing, with the cells themselves used for much of the strength. I'll call it the BattBike. 8)

 

[John in CR]

One of my earliest E-projects was to convert a motorcycle. I cut the bottom out of the gas tank and a 12v75ah deep cycle lead acid battery fit almost entirely inside the gas tank. What a slow pig waste of time that motorcycle was. I tried an ebike next and never thought of looking back, since every single ebike has been a better performer.

 

[neptronix]

hehe, i thought about putting them in a backpack.. but my girlfriend rules that one out by saying i'd look like a terrorist

 

[neptronix]

At some point some smaller format lipo bricks are going to get cheap enough to do overlapping bricks wrapped in fiberglass to become the structure frame members of a bike to take the place of much of the tubing. Smaller format packs so they stack in a few layers of overlap to create square or near square tubing, with the cells themselves used for much of the strength. I'll call it the BattBike. 8)

This is all well and fine until the batteries need replacing.

Disposable eBike?

 

[John in CR]

At some point some smaller format lipo bricks are going to get cheap enough to do overlapping bricks wrapped in fiberglass to become the structure frame members of a bike to take the place of much of the tubing. Smaller format packs so they stack in a few layers of overlap to create square or near square tubing, with the cells themselves used for much of the strength. I'll call it the BattBike. 8)

This is all well and fine until the batteries need replacing.

Disposable eBike?

Just disconnect that parallel group and glass/epoxy a new one in to replace it. Once the pack is dead, remove the bike components and send that battery frame for recycling and glue another set of batteries together. If done with RC type packs, I'd change the block configuration to parallel instead of series. A battery bike is probably better to be made of Lifepo4 cells, so that battery frame has a much longer life. Then if you plan it out well in nice blocks, you can just cut out a bad group, wire in a new group, and epoxy/glass repair with a result just like new.

The idea is that instead of just adding batteries to a bike, the batteries themselves can serve dual purpose and be part of the integral structure of the bike. Why let the strength of all that aluminum go to waste? That's the kind of thing I'd really like to do for the ebike challenge racing with the 70lb weight limit, so I can cut frame weight out for more batteries.

 

[neptronix]

Ya know, your idea doesn't sound any less crazy.. :lol:

 

[amberwolf]

I can't remember whose bike it is, but somewhere on ES is a bike with the batteries in tubular fenders.

 

[John in CR]

Ya know, your idea doesn't sound any less crazy.. :lol:

"Crazy" and "unconventional" can be synonyms. 8)

Someone fit batteries in a thermos and attached it at the water bottle mounts.
Another fit batteries in 2 cylinders and mounted them like booster rockets on each side of the rear wheel.

I prefer the Apollo 13 Method....Wrap the batteries in duct tape, and then use that same space age material that helped men get back from outer space after metal parts failed to secure the pack to the bike. Not only does it offer electrical insulation, but it also provides water resistance and vibration damping. Duct tape is much maligned, but there is no better material for mounting ebike batteries. We just need it to be available in rolls up to 2ft wide for a smooth finish, and a wide variety colors to permit more artistry.

John

 

[chrisvw]

Well, Duct tape certainly comes in a wide variety of colors today, but I haven't seen the 2 foot wide version. It might be fun pulling that off the roll!

 

[Lock]

Well, Duct tape certainly comes in a wide variety of colors today, but I haven't seen the 2 foot wide version. It might be fun pulling that off the roll!

Getting there, but ya still have to double up w/the 1'-version:
http://www.findtape.com/product432/Nashua-Big-Fix-Duct-Tape-Patch.aspx?idx=1&tid=2&info=dtp

:lol:
10cK