Cyclepath
09-09-03, 11:47 PM
The frames on these look way overbuilt. I'm wondering to what extent they could be drilled out & still retain structural integrity (i weigh 175). How would you determine size of holes & spacing?
Recumbent - Drilling Out an EBike Frame?
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sch
09-10-03, 02:19 PM
Are you referring to the bike that looks like a moped with an electric motor?
I doubt that a significant change in weight would come from drilling out the frame. Why not switch to lithium cells to save weight? Steve
I doubt that a significant change in weight would come from drilling out the frame. Why not switch to lithium cells to save weight? Steve
Cyclepath
09-10-03, 06:04 PM
Hi Steve. This is the recumbent (human-powered) with the simple box beam frame. It's fairly massive. Of course this may be a crazy or silly idea - i certainly wouldn't consider it with a conventional bike frame, but i'm a tinkerer by nature.:->
meb
09-13-03, 01:07 AM
I think he has misplaced his E.
BikeE (bankrupt recumbent) vs. ebike (Lee Iacocca's 24V & 36V electrics-uprights and folders).
BikeE (bankrupt recumbent) vs. ebike (Lee Iacocca's 24V & 36V electrics-uprights and folders).
meb
09-13-03, 04:12 PM
ebike already went to Lithium ion batteries on their folder, but they still use lead acid on their other models. NiMH is lighter.
I believe Ford's Th!nk Bike had lithium batteries as well before they pulled the plug on that program.
I believe Ford's Th!nk Bike had lithium batteries as well before they pulled the plug on that program.
Enginerd1959
10-08-03, 03:00 PM
You might not save as much weight as you think. Aluminum weighs .11 lbs per cubic inch. Lets say you cut 20 holes, 1.5" dia. in a 1/8" wall square tube. All that work and you only save .48 lbs.
Gary D.
11-02-03, 08:47 PM
You won't save enough weight to notice it. A better option is to not supersize those fries. ;^)
meb
02-09-04, 11:39 PM
I think these hilarious pics should remove that notion that the BikeE frame is overbuilt.
Note the frame bent rather than the chain snapping.
http://joesacher.com/cycling/motorbikee.php
Note the frame bent rather than the chain snapping.
http://joesacher.com/cycling/motorbikee.php
sscyco
02-10-04, 08:14 AM
However, if you do put the holes in your frame you can brag about how you transformed the bike frame material from aluminium to Drilleium .
madpogue
02-10-04, 11:01 AM
Now that's getting sillium!