Worst Crashes/Accidents/Failures etc on E-bike: Bring pics

Talk about anything and everything here within reason.
hodgie
100 W
100 W
Posts: 102
Joined: Apr 05, 2012 8:59 pm

Re: Worst Crashes/Accidents/Failures etc on E-bike: Bring pi

Post by hodgie » Mar 01, 2015 1:23 pm

Thx DrkAngel: Good tips and clever. Also, like your philosphical quotes. Best.
Own 36V and 24V Ioccoca EVG's with original Heinzemanns. Want to replace auto transport as much as possible. Eventually looking to upgrade 24V EVG to a 48V+ rig with a direct drive motor. Figuring out the battery technology right now to get my 36V EVG usable. BMS is still a bit (a lot) of a mystery.

User avatar
DrkAngel
10 GW
10 GW
Posts: 4584
Joined: Dec 15, 2010 11:14 am
Location: Upstate-Western-Southern Tier NY. USA

Simple ... "USA legal" 30mph eBike

Post by DrkAngel » Mar 02, 2015 10:11 am

DrkAngel wrote:Recently adopted by Currie eBike offerings, the application of specific gearing and severe current regulation, allows a 20mph motor only speed but with substantial assist actually increasing right till near 30mph. This comes near to legally allowing my personal safety mode of blending with in-town traffic.
I just choose a vehicle that I can see over and hop in behind it and use it as a traffic, and wind, blocker - not too close!
Simple ... "USA legal" 30mph eBike
TAG = 20mph (10A controller mode)
PAS = 30mph (20A controller mode)

Image
See - Currie Revolution
A little learning is a dangerous thing;
Drink deep, or taste not the Pierian spring:
There, shallow draughts intoxicate the brain,
And drinking largely, sobers us again.

I enjoy enlightening ... and enlivening the spirit of the innovators.

New & Improved - Acronym Definitions

Index - Homemade Battery Packs - Updated - November 2015

EBike Toolbox - Bargains! $

Endless Sphere Wiki

User avatar
cal3thousand
10 GW
10 GW
Posts: 4069
Joined: Mar 26, 2012 4:47 pm
Location: California

Re: Worst Crashes/Accidents/Failures etc on E-bike: Bring pi

Post by cal3thousand » Mar 02, 2015 4:53 pm

Forum member just posted on the Facebook side of his accident cleaning his bike under throttle. Rag got stuck in the chain and pulled in his hand. Stitches and a broken finger:


DON'T TRY THIS AT HOME!!



Image

Image


#bananascale
Image
Get a Cycle Analyst and a Multimeter, you're still a noob if you don't have at least one of each.

Planning on posting questions or buying anything on this site? Put up your country (at minimum) on your profile. This is a worldwide forum and we haven't reached clairvoyance.

User avatar
granolaboy
1 kW
1 kW
Posts: 317
Joined: Nov 09, 2011 5:02 pm
Location: Skidegate, BC, Canada

Re: Worst Crashes/Accidents/Failures etc on E-bike: Bring pi

Post by granolaboy » Mar 02, 2015 8:41 pm

oh wow...after reading this thread I'm sure glad I live in Canada.

It costs a lot to get injured down there!! :shock:
2010 EVT 168 @ 69v

User avatar
cal3thousand
10 GW
10 GW
Posts: 4069
Joined: Mar 26, 2012 4:47 pm
Location: California

Re: Worst Crashes/Accidents/Failures etc on E-bike: Bring pi

Post by cal3thousand » Mar 16, 2015 8:43 pm

Well... its my turn.

I was riding home after work. About 430pm, almost home when I decided to take another path around the neighborhood. Made a quick turn and went through a narrow pass between a telephone pole and a supporting wire. Misjudged it and clipped the pole with my left toe and then pedal. This made me get my right foot stuck in the rear tire and swingarm which stopped me from 15mph in under 4 feet. And I somehow managed to come to a stop on one foot and two wheels. After prying my right foot out, it felt really twisted but it's actually better than my left now. I got lucky and learned a lesson at slow speeds. I'll be back to riding after I replace this bent crank arm.
Get a Cycle Analyst and a Multimeter, you're still a noob if you don't have at least one of each.

Planning on posting questions or buying anything on this site? Put up your country (at minimum) on your profile. This is a worldwide forum and we haven't reached clairvoyance.

DrChopper8
10 W
10 W
Posts: 93
Joined: Dec 04, 2014 2:10 am
Location: Phila. PA

Re: Worst Crashes/Accidents/Failures etc on E-bike: Bring pi

Post by DrChopper8 » Mar 20, 2015 11:21 pm

Kyle was guaranteed his money back. Back 2 months ago.
Attachments
kylekeefer1.jpeg
(128.85 KiB) Downloaded 5 times
kylekeefer2.jpeg
(121.37 KiB) Downloaded 5 times
Last edited by DrChopper8 on Aug 18, 2015 1:42 am, edited 1 time in total.
MKWeefer has a vagina

DrChopper8
10 W
10 W
Posts: 93
Joined: Dec 04, 2014 2:10 am
Location: Phila. PA

Re: Worst Crashes/Accidents/Failures etc on E-bike: Bring pi

Post by DrChopper8 » Mar 21, 2015 8:10 am

MWKeefer E.S. reputable Battery tech. As I was told.
Attachments
aretkeefr.jpeg
aretkeefr.jpeg (33.49 KiB) Viewed 1293 times
Last edited by DrChopper8 on Aug 18, 2015 1:41 am, edited 2 times in total.
MKWeefer has a vagina

User avatar
Ghost (bike)rider
10 mW
10 mW
Posts: 24
Joined: Aug 08, 2013 11:01 pm
Location: Perth, Australia

Post by Ghost (bike)rider » Mar 23, 2015 11:30 am

split my rim.jpg
So my original 1987 Raleigh Ozark rims decided to suffer from fatigue due to the torque of the motor. If you look, there is a hairline crack all the way around the rim joining the eyelets!

This happened at 50kph as follows:
1. Rim separated at the centre and cause the rim width to expand
2. The rim hit the brakes and locked the wheel, snaking to a halt
3. during the snaking, the spokes poked through the eyelets and make the sound of a shotgun as it popped the inner tube
4. Pretend this is all normal in front of the commuters waiting at the nearby train station who are staring.

User avatar
striker54
1 kW
1 kW
Posts: 321
Joined: Jun 25, 2013 6:27 am
Location: Portugal

Re:

Post by striker54 » Mar 23, 2015 11:58 am

Ghost (bike)rider wrote: 4. Pretend this is all normal in front of the commuters waiting at the nearby train station who are staring.
:lol: :lol: :lol:

User avatar
Chalo
100 GW
100 GW
Posts: 6667
Joined: Apr 29, 2009 11:29 pm
Location: Austin, Texas

Re:

Post by Chalo » Mar 23, 2015 12:09 pm

Ghost (bike)rider wrote:
split my rim.jpg
So my original 1987 Raleigh Ozark rims decided to suffer from fatigue due to the torque of the motor.
If you analyze the effect of motor torque (or pedal torque) at the spokes, it's not much. It gets divided up a lot of ways.

Your rim failure is characteristic of tire overinflation on single-walled rims.
This is to express my gratitude to Justin of Grin Technologies for his extraordinary measures to save this forum for the benefit of all.

User avatar
gogo
100 MW
100 MW
Posts: 2615
Joined: Mar 17, 2008 2:20 pm
Location: Iowa USA

Re: Worst Crashes/Accidents/Failures etc on E-bike: Bring pi

Post by gogo » Mar 23, 2015 12:33 pm

Ghost (bike)rider wrote:4. Pretend this is all normal in front of the commuters waiting at the nearby train station who are staring.
+1 for style
Chalo wrote:Your rim failure is characteristic of tire overinflation on single-walled rims.
So, maybe something that can be prevented by proper inflation and regular inspection? Its a failure mode I had never contemplated.
"A conclusion is the place where you got tired of thinking." -Steven Wright

User avatar
Chalo
100 GW
100 GW
Posts: 6667
Joined: Apr 29, 2009 11:29 pm
Location: Austin, Texas

Re: Worst Crashes/Accidents/Failures etc on E-bike: Bring pi

Post by Chalo » Mar 24, 2015 1:38 am

gogo wrote:
Chalo wrote:Your rim failure is characteristic of tire overinflation on single-walled rims.
So, maybe something that can be prevented by proper inflation and regular inspection?
Double-walled rims are the best prevention. And they pay dividends in structural integrity. Look no farther than Alex DM24 if you want the best rim for the money in 20", 24", 26". In 700c, the best bang per buck must be Sun Rhyno Lite.

Single-walled rims are slightly easier to change tires on, but the reason they exist is because they are cheaper to make than double-walled rims.
This is to express my gratitude to Justin of Grin Technologies for his extraordinary measures to save this forum for the benefit of all.

User avatar
cal3thousand
10 GW
10 GW
Posts: 4069
Joined: Mar 26, 2012 4:47 pm
Location: California

Re: Worst Crashes/Accidents/Failures etc on E-bike: Bring pi

Post by cal3thousand » Apr 21, 2015 3:20 pm

Ricky_nz just reported that he had a bad crash while stunting in front of his nephews. :(

He's shared the images in his thread: https://endless-sphere.com/forums/viewto ... =1&t=68791
Get a Cycle Analyst and a Multimeter, you're still a noob if you don't have at least one of each.

Planning on posting questions or buying anything on this site? Put up your country (at minimum) on your profile. This is a worldwide forum and we haven't reached clairvoyance.

User avatar
mechanerd
1 mW
1 mW
Posts: 13
Joined: Apr 08, 2013 12:46 pm

Re: Worst Crashes/Accidents/Failures etc on E-bike: Bring pi

Post by mechanerd » Apr 26, 2015 10:03 am

www.recumbents.com wrote:In 2007 I was out for a nice ride to test my first ebike and the motor kept shutting off. Why I did not know. Reached behind seat to see if motor was warm and brushed something.

This was before I knew that BMSs shut off the battery whenever they feel like it.

This bikes name is FingerEater.
ev_electrodrive.jpg
Fortunately missing the first joint of my ring finger is not very noticeable.
-Warren.
Yes, seen this done "first hand"(sorry, bad pun) in a motorcycle shop and at a sawmill factory. :{. There is a huge amount on concentrated energy stored in a moving chain.
Always put a guard around the chain to prevent pant legs and body parts from being snipped off. The portable sawmill guy lost an entire hand and pulled his arm out of the socket just brushing the side of the chain. Even a few pieces of recycled HPDE from milk carton goes for a low weight solution to cover the chain travel area. Besides, it keeps the oil from the chain slopping all over, and keeps out debris from flying into the works and possibly stopping the rotation.

I repaired one engine case on an ATV when the chain came apart from a tree branch drug into the path. The chain slapped the case and cracked it with a hole. The plastic guard did its job and stopped the user from losing an ankle by deflecting the flying chain towards the engine case. I put a rubber tire knob plug with JB weld in the hole to continue riding that weekend. Replaced the case cover and not some bones.

I myself would consider sheet metal and proper brackets when working with chain drives of more than a couple of HP equivalent.
Why not put a thermal cutoff fuse on the drive supply wires? Much like the bimetallic thermostats used on hot water heaters. Use one for each phase wire, and they make reset-able ones that will close the circuit once cooled off. Cheap at Digikey.com.

User avatar
The fingers
100 GW
100 GW
Posts: 6073
Joined: Mar 11, 2012 11:22 pm
Location: Desert Pacific Cali USA

Re: Worst Crashes/Accidents/Failures etc on E-bike: Bring pi

Post by The fingers » Apr 26, 2015 11:52 am

"This bikes name is FingerEater": recumbents.com

:shock:
Black Schwinn High Sierra
Blue Schwinn Cruiser 5
Blue Schwinn High Plains
Black Fiore Cruzer 5: Amped Warp Drive 26" Front DD/SLA kit
http://ghostbikes.org/
http://www.rideofsilence.org/main.php
Hebrews 9:27

User avatar
Gloop
10 W
10 W
Posts: 72
Joined: May 20, 2015 10:24 pm
Location: Victoria BC

Re: Worst Crashes/Accidents/Failures etc on E-bike: Bring pi

Post by Gloop » May 24, 2015 4:16 am

Just two weeks ago hit a car. Was going straight down the road when the car going the opposite way turned in front of me. Closing speed 45 kmh.

No serious injuries, but smashed his windshield, smashed my computer, bent wheel, bent front fork, and bent frame. Hope the motor is okay.

User avatar
DrkAngel
10 GW
10 GW
Posts: 4584
Joined: Dec 15, 2010 11:14 am
Location: Upstate-Western-Southern Tier NY. USA

Re: Worst Crashes/Accidents/Failures etc on E-bike: Bring pi

Post by DrkAngel » May 24, 2015 10:12 am

Gloop wrote:Just two weeks ago hit a car. Was going straight down the road when the car going the opposite way turned in front of me. Closing speed 45 kmh.

No serious injuries, but smashed his windshield, smashed my computer, bent wheel, bent front fork, and bent frame. Hope the motor is okay.
Highly recommend a headlight with strobe function for daylight use.

Gets way more attention than a brighter normal light,
gives a better indication of movement-speed,
is not mistaken for sunlight reflection,
etc. ... great safety improvement!

I used a wide\narrow zoom light for many years with great success, noted by lack of driver reaction when I forgot to turn it on.
Recently, for daylight travel, I have experimented by removing the focusing lens and replacing with a semi-clear pop bottle twist cap,
Rather than a somewhat narrow forward beam, strobe is a larger area 180º + forward environment safety device!
Easier to confirm operational also.
I swap to normal light for near dark use.
A little learning is a dangerous thing;
Drink deep, or taste not the Pierian spring:
There, shallow draughts intoxicate the brain,
And drinking largely, sobers us again.

I enjoy enlightening ... and enlivening the spirit of the innovators.

New & Improved - Acronym Definitions

Index - Homemade Battery Packs - Updated - November 2015

EBike Toolbox - Bargains! $

Endless Sphere Wiki

User avatar
Gloop
10 W
10 W
Posts: 72
Joined: May 20, 2015 10:24 pm
Location: Victoria BC

Re: Worst Crashes/Accidents/Failures etc on E-bike: Bring pi

Post by Gloop » May 24, 2015 7:42 pm

Glad you're "ok", and thanks for posting. Were you covering the brakes with your fingers? Were you able to use any braking before impact or choose an impact angle?

You don't have to reply to me, but feel free to quote me in a thread response if you wish. Many of us like to learn from others' experience.
The accident happened at night, I had my 2 Watt headlight on, but not on strobe. In hindsight, I should have had strobe on, but it was very dark where I was.
I was originally going about 50k and had begun slowing down for the stop sign so I was braking, at the time of impact I was doing about 35 k and the driver was doing 10.

It all happened so fast. The drive didn't signal. Usually when I see a car signalling a turn I slow doing because I don't trust cars.
In this case I have no time to do anything. I couldn't veer out of the way nor brake any harder. Somehow I protected my head.
There are only two things I could have done differently. Wear more lighting on strobe, or go a whole lot slower.

My worst injuries are a knee that hurts when i walk, a pulled tendon in my leg, and chest pains esp when I cough or sneeze.
I'm surprized my steel fork and frame are so damaged. I don't know if the motor axle would be damaged too, but the tire is seized so I can't test it out.
I have to send the wheel back to Grin Cyclery in Vancouver for repairs, so I will ask them to test it for me.

I plan to get a second helmet light, http://www.mec.ca/product/5029-832/4sev ... lashlight/ so that I have two front strobes.

User avatar
amberwolf
100 GW
100 GW
Posts: 25068
Joined: Aug 17, 2009 6:43 am
Location: Phoenix, AZ, USA, Earth, Sol, Local Bubble, Orion Arm, Milky Way, Local Group
Contact:

Re: Worst Crashes/Accidents/Failures etc on E-bike: Bring pi

Post by amberwolf » May 24, 2015 9:08 pm

Gloop wrote: The drive didn't signal. Usually when I see a car signalling a turn I slow doing because I don't trust cars.
In this case I have no time to do anything. I couldn't veer out of the way nor brake any harder. Somehow I protected my head.There are only two things I could have done differently. Wear more lighting on strobe, or go a whole lot slower.
Honestly, in my experience, in situations like that, it's just as likely that they would still have done what they did, either because they don't believe you're going as fast as you are, or because they simply aren't looking *at all* and wouldnt' have seen on oncoming semi truck either. ;)

Sometimes a super-loud horn, or a car or truck horn, can startle someone into hesitating before they do whatever stupid thing they were about to do, and make them look, but I wouldn't bet my life on that either. :/ (I do have a car horn on CrazyBike2, and I've used it a few times with success, but I still don't depend on it as my only "defense" action).


But really, the most important to me, the third thing you could've done...part of the "don't trust cars" for me: If there is a possibility of a car doing a turn in front of me like that, I assume they will and do what I need to to ensure that I won't be able to collide with them if they do.

Sometimes that means coming to a complete stop until they've passed because I just can't tell, and there's nowhere I could go if they did.

Sometimes it means moving leftward in my lane *towards them*, away from the right edge of the road or out of the bike lane, so I have soemwhere to go when they do their thing, even if that is into their lane (if there's no one else but us in that stretch).


FWIW, I'm also lit up like a motorcycle, car, and christmas tree, :lol: but I don't depend on that, either, even though it probably does more for cars/trucks paying attention to me than anything else I've done so far (partly because the bike is so different that they don't know what I am, and probably assume I'm going faster than I am because I look kinda like a motorcycle to them).


I used to try to depend on painting my bikes up in DayGlo colors, reflective stickers and vests, etc. But Iv'e found that doesn't really do enough (it does help a lot), and that's one reason I went for the lighting.



Buuuut: When i have built a pure bicycle-looking bike (the Fusin test bike) but still with all that same lighting on it, the very same drivers that give me full lanes and road respect when i ride CrazyBike2, instead they did what they do to most cyclists and zoom right past me as if I weren't there, or worse, as if I *shouldn't* be there.

Some places aren't so bad as that...but main roads usually are, here.

User avatar
Gloop
10 W
10 W
Posts: 72
Joined: May 20, 2015 10:24 pm
Location: Victoria BC

Re: Worst Crashes/Accidents/Failures etc on E-bike: Bring pi

Post by Gloop » May 26, 2015 4:14 am

amberwolf wrote: But really, the most important to me, the third thing you could've done...part of the "don't trust cars" for me: If there is a possibility of a car doing a turn in front of me like that, I assume they will and do what I need to to ensure that I won't be able to collide with them if they do.

Sometimes that means coming to a complete stop until they've passed because I just can't tell, and there's nowhere I could go if they did.
Yes. I now have a habit of slowing dramatically for all cars that are turning, but previously I did as well, just not as slow as I do now.
One complicating factor was that this happened about 30 m from a T intersection, and the car was turning into a relatively unlit Chevron ramp. So he turned onto my road and turned very quickly into the Chevron, without stopping or slowing much for the turn.

User avatar
DrkAngel
10 GW
10 GW
Posts: 4584
Joined: Dec 15, 2010 11:14 am
Location: Upstate-Western-Southern Tier NY. USA

Re: Worst Crashes/Accidents/Failures etc on E-bike: Bring pi

Post by DrkAngel » May 26, 2015 12:37 pm

Gloop wrote: I was originally going about 50k and had begun slowing down for the stop sign so I was braking, at the time of impact I was doing about 35 k and the driver was doing 10.
Accident happened in intersection ... with stop signs?
If not mistaken ... you could have avoided any problem by stopping at stop sign ... as legally required, and as driver had the reasonable expectation of. ... ?
Last edited by DrkAngel on May 27, 2015 6:51 am, edited 1 time in total.
A little learning is a dangerous thing;
Drink deep, or taste not the Pierian spring:
There, shallow draughts intoxicate the brain,
And drinking largely, sobers us again.

I enjoy enlightening ... and enlivening the spirit of the innovators.

New & Improved - Acronym Definitions

Index - Homemade Battery Packs - Updated - November 2015

EBike Toolbox - Bargains! $

Endless Sphere Wiki

pff7
100 W
100 W
Posts: 115
Joined: May 08, 2012 6:31 pm
Location: Illinois USA

Re: Worst Crashes/Accidents/Failures etc on E-bike: Bring pi

Post by pff7 » May 26, 2015 1:44 pm

Glad your OK

" My worst injuries are a knee that hurts when i walk, a pulled tendon in my leg, and chest pains esp when I cough or sneeze...."

Sounds like a busted and/or cracked rib to me....I've had the same(not from bike accident tho)...where it hurt when coughing and/or sneezing. Lasted a bit long time also.

User avatar
Gloop
10 W
10 W
Posts: 72
Joined: May 20, 2015 10:24 pm
Location: Victoria BC

Re: Worst Crashes/Accidents/Failures etc on E-bike: Bring pi

Post by Gloop » May 26, 2015 9:27 pm

DrkAngel wrote:
Gloop wrote: I was originally going about 50k and had begun slowing down for the stop sign so I was braking, at the time of impact I was doing about 35 k and the driver was doing 10.
If not mistaken ... you could have avoided any problem by stopping at stop sign ... as legally required, and as driver had the reasonable expectation of. ... ?
I never made it to the stop sign. Anyway the police found the driver at fault, and supposedly i'm getting compensated for my injuries and broken equipment.

User avatar
Ykick
100 GW
100 GW
Posts: 5945
Joined: Nov 26, 2009 6:10 pm
Location: San Diego, California

Re: Worst Crashes/Accidents/Failures etc on E-bike: Bring pi

Post by Ykick » May 26, 2015 10:04 pm

amberwolf wrote:"...part of the "don't trust cars" for me: If there is a possibility of a car doing a turn in front of me like that, I assume they will and do what I need to to ensure that I won't be able to collide with them if they do."
Gotta give a big AMEN BROTHER!!! Listen up new riders, this is the way it really works for the long haul.

And be mindful of our "speed" not being much like majority of regular bicycles. I've witnessed that seemingly cause drivers to wrongly judge closing distances.
Talent must not be wasted.... Those who have talent must hug it, embrace it, nurture it and share it lest it be taken away from you as fast as it was loaned to you.

- Frank Sinatra

User avatar
Chalo
100 GW
100 GW
Posts: 6667
Joined: Apr 29, 2009 11:29 pm
Location: Austin, Texas

Re: Worst Crashes/Accidents/Failures etc on E-bike: Bring pi

Post by Chalo » May 27, 2015 2:54 am

Word. Assume the worst about car drivers and you'll be right enough of the time to be glad you did.
This is to express my gratitude to Justin of Grin Technologies for his extraordinary measures to save this forum for the benefit of all.

Post Reply