Get all your technical information about electric bikes here.
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recumpence 100 GW

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by recumpence » Jul 11 2008 9:23pm
Wow, that is just weird!
Matt
1% of the world's population can think "Outside the box". The rest are firmly stuck within the box. Where are you?
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TylerDurden 100 GW

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by TylerDurden » Jul 11 2008 9:32pm
Bob McCree has one... (no tailbox tho). I figger, why not?

Have a Nice Day,
TD

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docnjoj 100 GW

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by docnjoj » Jul 12 2008 9:32am
I've been eyeing Cruzbike conversion kit for years! Brilliant engineering! I may be too old to go back to 2 wheels, after 5 years on my trike! Aero idea looks real slick, and covers packages.
otherDoc
E-bike stable at our house
Steintrike Mad Max full suspension trike rear Cute 100H going on: Whoops, Cute wheel broke but I fixed it.
Sun USX delta trike EbikeKit small geared front wheel sort of front suspension for wife
Agniusm/A123 AMP 20 36 volts on the Steini has been taken off.
2x16000 Multisport from HK now gone as they died after 2 years
New Luna 10S bottle battery 13.6AH now on mine
Relatively New 10S4Px2 for wife's bike giving 20ah @ 40 volts home made Panasonic from Tumich. BMS's rule.
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TylerDurden 100 GW

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by TylerDurden » Jul 12 2008 1:34pm
Testing flow illustrator:
Have a Nice Day,
TD

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michaelplogue 10 kW

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by michaelplogue » Jul 12 2008 5:18pm
Cool little tool you've found there! Thanks for the link. TD - it looks like one would be better off having the tail cowling come to a point rather than being rounded off.
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Ben 100 W

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by Ben » Jul 13 2008 1:48am
Doesn't really matter, you've got an extra dimension to play with in real life. Just make the fairing come to a knife's edge vertically and it'll be fine.
You could try chucking the top view in the illustrator and see how it looks.
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truckerzero 100 W

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by truckerzero » Jul 16 2008 1:07am
old saying :thers no substittute for cubic inches
new saying:thers no substittute for watts !!!
just kidding watts plus cda = top speed
ford explorer 12 mpg
pontiac sunfire 30 mpg
883 harley sportster 55 mpg
raze rc nitro buggy 196 mpg on 5% nitro methanol fuel
stryker electric rc plane 3.3 watts per mile@80 mph(too bad i cant ride on that thing)!!!
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MidniteTweeker 100 W

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by MidniteTweeker » Jul 17 2008 1:40pm
Evolution of aerodynamics?
MT
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- ascentofman1.jpg (21.02 KiB) Viewed 2510 times
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jnuts 1 mW

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by jnuts » Jul 17 2008 8:15pm
TylerDurden wrote:Testing flow illustrator:
How did you get it to work? I keep getting 0 kb movies sent to me when I try to create one with a standard airfoil that is included in the web page.
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TylerDurden 100 GW

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by TylerDurden » Jul 18 2008 12:12am
jnuts wrote:How did you get it to work? I keep getting 0 kb movies sent to me when I try to create one with a standard airfoil that is included in the web page.
I never used the test stuff, just uploaded a bitmap.
Check the controls for how many seconds you want the movie... IIRC, I made mine ~15sec.
It does spit back an AVI, so filesize will be big.

Have a Nice Day,
TD

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Ben 100 W

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by Ben » Jul 18 2008 1:55am
jnuts wrote:How did you get it to work? I keep getting 0 kb movies sent to me when I try to create one with a standard airfoil that is included in the web page.
Yeah I get the same thing with anything I try (settings or object type).
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paultrafalgar 10 kW

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by paultrafalgar » Jul 18 2008 2:44am
MidniteTweeker wrote:Evolution of aerodynamics?
MT
Nice try MidniteTweeker, but you left out a stage:

- ascentofman3.jpg (27.13 KiB) Viewed 2352 times
If we knew what it was we were doing, it would not be called research, would it? Albert Einstein
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jnuts 1 mW

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by jnuts » Jul 18 2008 10:55am
TylerDurden wrote:worked 4 me
Ack! I've tried it with IE and Firefox - both return 0 kb sized movies.
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TylerDurden 100 GW

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by TylerDurden » Jul 18 2008 11:32am
PM sent, but others may have the same issue, so I'm posting here...
Hi folks,
Couple of thoughts:
Your ISP or firewall may be blocking the files
The codec is IV50 wich got broken in some versions of WinXP and Vista, you may have to download again and reinstall IV50.
HTH
Have a Nice Day,
TD

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jnuts 1 mW

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by jnuts » Jul 18 2008 11:48am
TD - thanks for the PM. I'm lost as to why it's returning a null sized movie. I sent an email off to the author.
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michaelplogue 10 kW

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by michaelplogue » Jul 18 2008 2:27pm
I'm having the same problem. Just installed the codec mentioned above and am giving it another try.
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jnuts 1 mW

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by jnuts » Jul 18 2008 2:58pm
It doesn't matter if you have the mother of all codec packs installed - if the file size is null, zip, zero, zilch, nada.... there is nothing to play.

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Ben 100 W

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by Ben » Jul 18 2008 6:49pm
Gah! I can download your movie and play it, but I still get that darn 0kb file thing happening when I try to make my own or download one of their movies.
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jnuts 1 mW

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by jnuts » Jul 18 2008 6:55pm
Yep, plays fine here on media player classic.
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paultrafalgar 10 kW

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by paultrafalgar » Jul 19 2008 3:26am
Works fine on gxine on Debian Linux.
If we knew what it was we were doing, it would not be called research, would it? Albert Einstein
A paranoid is someone who has SOME idea of what's going on. Allen Ginsberg(?)
If the greatest pleasure is giving, be selfish - give pleasure.
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John in CR 100 GW

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by John in CR » Jul 29 2008 12:58pm
OK, I've had it with the wind slowing me down. My good road routes put me directly into a headwind to start every ride. While it's great for the return trip, it's time to get sleeker. In addition to a small front fairing and a tailbox, I want to do some little things that will hopefully add up.
Tires- These knobby off-road tires have got to go. I don't like them in the curves anyway, and they must be a real aero thief too. Whenever I lift the tire off the ground for a spin test it's like I'm turning on a powerful fan.
Front suspension- I forget the exact relationship, but something I learned in my sailboat design research is that a cylindrical form has the same aero drag as proper foil that is 3-4 times thicker. I want to build some AL or fiberglass sleeves to turn those front shock housings into air foils, along with something similar for any exposed tubular shapes.
John
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docnjoj 100 GW

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by docnjoj » Jul 29 2008 5:18pm
Thats a good idea, JohninCR! My tubing is square, and I have been thinking about airfoiling it with foam and fiberglas/epoxy. Nice little upside down wing like them Formula 1 cars! Im not sure I go fast enuff to get any real benefit, as most of my rides are under 25 mph!
otherDoc
E-bike stable at our house
Steintrike Mad Max full suspension trike rear Cute 100H going on: Whoops, Cute wheel broke but I fixed it.
Sun USX delta trike EbikeKit small geared front wheel sort of front suspension for wife
Agniusm/A123 AMP 20 36 volts on the Steini has been taken off.
2x16000 Multisport from HK now gone as they died after 2 years
New Luna 10S bottle battery 13.6AH now on mine
Relatively New 10S4Px2 for wife's bike giving 20ah @ 40 volts home made Panasonic from Tumich. BMS's rule.
-
recumpence 100 GW

- Posts: 5302
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by recumpence » Jul 29 2008 5:28pm
I am looking at making a tail box this winter. What I would love to do is make a complete seat and tailbox. The seat would be made of thin layers of plywood curved and laminated together, then the entire seat would be covered in carbon fiber or fiberglass.
The tail section would be made of a piano wire structure MIG welded together, then cloth stretched over and epoxied.
So many ideas, so little time!
Matt
1% of the world's population can think "Outside the box". The rest are firmly stuck within the box. Where are you?