|
View previous topic :: View next topic
|
| Author |
Message |
showka
Joined: 04 Dec 2006
|
 Posted: Fri Sep 14, 2007 9:07 pm Post subject: Super fast electric motor cycle crashes into van super fast |
  |
|
First off nobody died so this is hilarious.
This guy has created a electric motorcycle. Because its impossible for anyone to make an electric vehicle in this day and age without promising the device can go from 0 to 300 mph in three nanoseconds, this vehicle can go from 0 to 60 in under a single second.
While showing it off to the press (scroll the video to 3:15) the guy unexpectedly takes off and crashes into a van.
He is later shown alive. Apparently he flipped off the vehicle and onto his back, landing on the pavement. He was then taken to a hospital. |
|
| Filter / Back to top |
|
 |
GcDiaz
Joined: 04 Dec 2006
Location: Clinton, MA
|
| Posted: Fri Sep 14, 2007 10:25 pm |
|
|
He's lucky he didn't hit anyone. That thing lived up to its hype, and no pedestrian would've seen it coming. Burnouts are usually done under controlled conditions, not on public streets. Idiot.
_________________
Steam/PSN/Xbawks: GcDiaz
Let's bring sexy back!
 |
|
| Filter / Back to top |
|
|
Panoptic
Joined: 05 Dec 2006
|
| Posted: Fri Sep 14, 2007 10:51 pm |
|
|
Man, that thing launched like a motherfucker. I take it the thing doesn't have a clutch. Either way, he should have been wearing safety gear.
On a side note, is it just me, or should electric cars with those fancy-pants constantly variable transmissions be a no-brainer? |
|
| Filter / Back to top |
|
|
exodus
Joined: 05 Dec 2006
Location: OAK
|
| Posted: Fri Sep 14, 2007 10:51 pm |
|
|
the beard made him do it.
_________________
 |
|
| Filter / Back to top |
|
|
alice
not nana komatsu
Joined: 05 Dec 2006
|
| Posted: Sat Sep 15, 2007 3:02 am |
|
|
| he roundhouse kicked himself to safety no doubt. |
|
| Filter / Back to top |
|
|
IIOIOOIOO
double banned
Joined: 08 Dec 2006
|
| Posted: Sat Sep 15, 2007 3:21 am |
|
|
Great foreshadowing:
"Normally, I don't drive this beast." |
|
| Filter / Back to top |
|
|
slipstream
hates LOTR films
Joined: 05 Dec 2006
|
| Posted: Sat Sep 15, 2007 3:49 am |
|
|
Bikes like that should be left to gangs of rebellious youth fighting for supremacy on the streets of neo-Tokyo.
_________________
 |
|
| Filter / Back to top |
|
|
Harveyjames
Joined: 11 Dec 2006
|
| Posted: Sat Sep 15, 2007 4:09 am |
|
|
| That was too funny! I love how it just cut to a shot of him sprawling flat out on the ground with no-one doing anything or saying anything. |
|
| Filter / Back to top |
|
|
Toptube
Anti-cabbage Party Candidate
Joined: 23 Apr 2007
|
| Posted: Sat Sep 15, 2007 11:29 am |
|
|
| that van seemed suprisingly under-damaged. |
|
| Filter / Back to top |
|
|
Panoptic
Joined: 05 Dec 2006
|
| Posted: Sat Sep 15, 2007 7:13 pm |
|
|
| Apparently (according to /. posters) he managed to get it slowed down to 20mph before striking the vehicle. Apparently he couldn't fully engage the brake because of his hand position on the throttle. Again, should have had a clutch (or at least a killswitch where the clutch would have been). |
|
| Filter / Back to top |
|
|
DaleNixon
Joined: 04 Dec 2006
Location: dirty dirty south
|
| Posted: Sat Sep 15, 2007 8:16 pm |
|
|
| Bill Dube wrote: |
I wasn't wearing a helment, because we did not intend the bike to even move!
We were spinning the tire in soapy water. The tire unexpectantly gripped, (water ran out?) and launched the bike. I couldn't get it shut down as quickly as I would have liked. I had to release the front brake to fully untwist the throttle. I then managed to slow it down to about 20 mph.
The positive message here is that when we crunched the battery pack, NOTHING happened. No smoke. No flames. Not even sparks. Not only are these cells more powerful, they are are the safest possible for automobiles.
Also, there was NO ONE in front of the bike or in the possible trajectory of the bike.
Bill Dube |
He really should have worn a helment.
_________________
 |
|
| Filter / Back to top |
|
|
Gironika
Joined: 05 Dec 2006
Location: Dragon Range
|
| Posted: Mon Sep 17, 2007 6:01 pm |
|
|
now imagine someone trying to have a light-weight electric-racecar duke it out with petrol-cars.
I wonder why no one except PLM with it's Tesla are trying to do anything in that direction...
_________________
 |
|
| Filter / Back to top |
|
|
XORDYH
Joined: 01 Jun 2007
|
| Posted: Tue Sep 18, 2007 2:40 am |
|
|
| Gironika wrote: |
now imagine someone trying to have a light-weight electric-racecar duke it out with petrol-cars.
I wonder why no one except PLM with it's Tesla are trying to do anything in that direction... |
Umm, he states in the video that the bike is about 100 lbs heavier than a standard pro-stock bike. Probably due to the batteries. |
|
| Filter / Back to top |
|
|
Panoptic
Joined: 05 Dec 2006
|
| Posted: Tue Sep 18, 2007 5:34 am |
|
|
| Outside of drag racing, I think the problem would be getting enough top-end output while being able to slow it down and bring it back up without releasing enormous amounts of energy as heat. Electric motors are all torque, and typically worthless beyond a few hundred RPM's, so they'd need an awful lot of gears, too (or really tall gears, which would hurt "throttle" response). |
|
| Filter / Back to top |
|
|
Agent Orange
Joined: 05 Dec 2006
|
| Posted: Tue Sep 18, 2007 6:26 am |
|
|
| Panoptic wrote: |
| Electric motors are all torque, and typically worthless beyond a few hundred RPM's, so they'd need an awful lot of gears, too (or really tall gears, which would hurt "throttle" response). |
I'm not so sure if that's true.
http://en.wikipedia.org/wiki/Induction_motor |
|
| Filter / Back to top |
|
|
Panoptic
Joined: 05 Dec 2006
|
| Posted: Tue Sep 18, 2007 6:47 am |
|
|
| Whoops - I was only referring to DC motors when I said that, since the source is DC; it can be converted, sure, however there is still the problem of varying the voltage to an AC motor for varying torque levels. Still going to waste a lot of energy, and you're still going to generate a lot of heat. Either way, I still don't think electric cars will be competitive (with liquid fuel-powered cars) on race tracks any time soon. |
|
| Filter / Back to top |
|
|
DonMarco
graphics fucker
Joined: 06 Dec 2006
|
| Posted: Tue Sep 18, 2007 4:24 pm |
|
|
| Panoptic wrote: |
| Electric motors are all torque, and typically worthless beyond a few hundred RPM's, so they'd need an awful lot of gears, too (or really tall gears, which would hurt "throttle" response). |
Strip off the gears and transmission of a combustion engine and you have the same problem. Also not the only heat generated by an electric motor is due to friction, and can easily be isolated and controled.
DC motors, like the newer and more efficient brushless variety, are prefered in homemade electric bikes and electric model airplanes. Also! Harddrive motors, CD player motors, PC cooling fans, Segways, and electric motors found in hybrid cars.
Furthermore! The advantages of electric vehicles is that electricity is readily available in any home, it can also be generated through onboard combustion engines, and even captured while braking the vehicle.
_________________
Still alive. |
|
| Filter / Back to top |
|
|
Axelay 2
Joined: 23 Apr 2007
|
| Posted: Tue Sep 18, 2007 4:38 pm |
|
|
| slipstream wrote: |
| Bikes like that should be left to gangs of rebellious youth fighting for supremacy on the streets of neo-Tokyo. |
Somebody needs to take the video and dub in the Akira soundtrack.
Tetsuooooooooooooooo! |
|
| Filter / Back to top |
|
|
Panoptic
Joined: 05 Dec 2006
|
| Posted: Tue Sep 18, 2007 5:55 pm |
|
|
| DonMarco wrote: |
Strip off the gears and transmission of a combustion engine and you have the same problem. Also not the only heat generated by an electric motor is due to friction, and can easily be isolated and controled.
DC motors, like the newer and more efficient brushless variety, are prefered in homemade electric bikes and electric model airplanes. Also! Harddrive motors, CD player motors, PC cooling fans, Segways, and electric motors found in hybrid cars.
Furthermore! The advantages of electric vehicles is that electricity is readily available in any home, it can also be generated through onboard combustion engines, and even captured while braking the vehicle. |
The problem there would be figuring out what to do with all the current that'll just be wasted as you're varying the input into the motor. Winding the motor up and down from near-idle to full speed under load over and over again is going to spend huge amount of engergy (and likewise, the components controlling this are going to get up to fire-starting temperatures without some clever ductwork to air cool everything). You could try a variable transmission, but I don't think that'd be competitive with the sequential gearboxes typically used in racing.
Then, there's the entire aspect of what to do when you run out of juice - you can't just put more in at a pit stop. Gotta replace the pack, and that shit is going to be heavy. Granted, I'm sure someone could devise a clever quick disconnect and haul out the pack with a cart of some sort. Maybe a bunch of smaller drop-in battery packs would do the trick...
[edit] - A thought... I could see something like Volkswagen's DSG transmission system working with an electric motor; program automatic shift points so the motor never rises or drops out of a certain range at speed. Would need a bunch short gears to keep RPM's up at the hairpins though.
Last edited by Panoptic on Tue Sep 18, 2007 9:17 pm; edited 1 time in total |
|
| Filter / Back to top |
|
|
shnozlak
Joined: 05 Dec 2006
Location: pushing crates in the sewer level
|
| Posted: Tue Sep 18, 2007 8:35 pm |
|
|
The bike can hit 60 in about 1 second from a full stop. He launched forward with the motor already revved up, soo he may have reached even greater velocities before he was able to get his head around the situation and react. Combine the high speed and braking distance of a bike that weighs 650lbs riderless and being able to slow to only 20mph as he hit the van isn't unreasonable.
http://www.killacycle.com/about/
looks like its single speed
batteries weigh 180
he can make 7 runs (quarter miles) on a charge
recharge takes 5 minutes
_________________
Mixtapes galore ~ VG MUSIC
ᕦ(ò_óˇ)ᕤ http://phantom-photon.tumblr.com/ |
|
| Filter / Back to top |
|
|
DaleNixon
Joined: 04 Dec 2006
Location: dirty dirty south
|
| Posted: Wed Sep 19, 2007 2:16 am |
|
|
Quarter mile: 8.168s @ 155MPH!?!
I'd say this guy's really lucky to be alive.
_________________
|
|
| Filter / Back to top |
|
|
Gironika
Joined: 05 Dec 2006
Location: Dragon Range
|
| Posted: Thu Sep 20, 2007 1:43 pm |
|
|
| Panoptic wrote: |
| The problem there would be figuring out what to do with all the current that'll just be wasted as you're varying the input into the motor. Winding the motor up and down from near-idle to full speed under load over and over again is going to spend huge amount of engergy (and likewise, the components controlling this are going to get up to fire-starting temperatures without some clever ductwork to air cool everything). You could try a variable transmission, but I don't think that'd be competitive with the sequential gearboxes typically used in racing. |
If we're talking about cars, the basic layout of the drivetrain as we know it today would be, well, superfluous. Hub motors would cause different problems (layout of the suspension, intelligent distribution of power etc.) though would get rid of gearboxes and the engine we know that way.
_________________
|
|
| Filter / Back to top |
|
|
|
FAQ
Search
Memberlist
Usergroups
Register
Profile
Log in to check your private messages
Log in
