electrifying a cannondale bad boy 700

[e-cannon]

that's a good idea. you have to work very precisely and cover the spokes with tape or something so the epoxy will not get into them I think. and maybe if you want to open a triangle form you probably have to split the zippers in two parts other than going around a curve while at the third side you could laminate in a fabric functioning as a hinge. I am not sure if you can use zippers other than straight (seen from "top view" of course). but I'm not sure about that.
also I would make sure that the epoxy can leak trough the fabric of the zipper eihter through the fabric net itself (if i's rough enough) or otherwise manually make some wholes in it. that way the epoxy will make a connection to the other side and the border area will be stronger.

[e-cannon]

zipper.jpg (18.71 KiB) Viewed 791 times

[Whiplash]

Soo, you could just make a buck of the shape you want, glass it over, then cut it in half and then laminate the zipper in place right? Sounds a LOT easier than I am sure it is, but I like it!! I think I might have to try it!

[hillzofvalp]

Yeah. I thought of this when I was thinking about my Spain trip this summer and getting all the suitcases out. Using a zipper would eliminate the need for a keyed entry. The zipper end could just be hidden, and a piece of tape can go over the zipper joint along the whole perimeter for a seemless enclosure. Then, if you wanted, you could paint over that (if you use A123 batteries or ones with high cycle life) and break it open every few years for a battery refresh and then repaint.

I would leave little trenches in the mold for extra space for the fabric. Maybe an 1/8 of inch. I would drill little holes.

Can someone get me started on laminating and tool/supply gathering? Did I miss a tutorial on here?

[hillzofvalp]

Anyone?

And if you used a zipper, you would have to make sure you put enough battery pack padding in so that it is snug in there and not bouncing around.

zippers.
http://cgi.ebay.com/US-HEAVY-DUTY-SLEEPING-BAG-REPLACEMENT-ZIPPER-E1349-/370085487611?pt=LH_DefaultDomain_0&hash=item562ad063fb#ht_500wt_922

http://www.rochfordsupply.com/shop/Zippers/Fixed_Length_Zippers-Separating/index.html

There are some #20s (18mm) out there, but I'm not sure if you'd get that much benefit from using them. THey will probably protrude a little more from the enclosure as well.

[hillzofvalp]

has anyone made progress on zipper?

[Trackman417]

All I can say is... WOW!
Great JOB E-cannon! This build has had me seriously thinking about using fiber glass on the inside of my bike. Just a couple questions that I did not catch in the thread.
How did you finish up the fiber glass to look Nice and clean? Fine sand paper and primer?
Another question. Did you use one large sheet of fiber glass? And work it into the foam?
Great work once again! I'm sorry I did not find this build thread earlier.

[pguk]

Seriously considering doing this for my next build. I hope the op is able to give some feedback about how it the enclosure copes with frame flex? I run a steel frame trek mtb and a see loads of flex going on between my knees as a motor along. With the rigid mounting method this is all transferred to the enclosure- how has it faired over time? Have any cracks appeared?

[e-cannon]

Seriously considering doing this for my next build. I hope the op is able to give some feedback about how it the enclosure copes with frame flex? I run a steel frame trek mtb and a see loads of flex going on between my knees as a motor along. With the rigid mounting method this is all transferred to the enclosure- how has it faired over time? Have any cracks appeared?

Sorry my late answer.
No cracks have appeared. The bicycle endured a couple of falls/crashes but on low velocity which I believe were stronger stress tests of the construction than a potential bending of the frame.
I believe also that you can't call the mounting completely rigid, as the holes I drilled through the enclosure are granting some clearance around the screws. I also installed some rubbery spacers on the inside of the enclosure, the spacer tubes between frame and enclosure are some sort of hard plastic.
Actually I can't really imagine a deformation of the frame which could harm the enclosure if you (idealized) look at it as a triangle. the bending then must happen in tube direction and can probably be neglected. But maybe I am totally wrong here.
Then I have to say also I use this bicycle nearly every day but not on a rough terrain (city).
Hope this helps a little.
Cheers