07/22/25 at 10:00am
‹ Previous Topic | Next Topic ›
Page Index Toggle Pages: 1 Print
Hot Topic (More than 10 Replies) Bike Storage (Read 2256 times)
Avlrider
Coaster Bike
**
Offline


Work Ride Tarheel Trailblazers

Posts: 118
Location: NC
Joined: 03/05/13
Bike Storage
12/11/13 at 1:59am
Print Post  
What ideas do you have for storing bikes for limited floor/garage space?  My question is when hanging bikes by the wheels on hooks,..does this hurt the wheel in any way??
  
(You need to Login or Register to view media files and links) (Attachment deleted)
Back to top
 
IP Logged
 
Enoch
Forum Administrator
IB Room
Project Board
In The Loop
*****
Offline


Walked with God and he
was not

Posts: 8702
Joined: 05/08/04
Re: Bike Storage
Reply #1 - 12/11/13 at 2:01am
Print Post  
Avlrider wrote on 12/11/13 at 1:59am:
What ideas do you have for storing bikes for limited floor/garage space?  My question is when hanging bikes by the wheels on hooks,..does this hurt the wheel in any way??


no
  
(You need to Login or Register to view media files and links) (Attachment deleted)
Do what you like. Stop hating people for their riding habits and get back to hating them for their skin color, religion, politics, and sexual orientation.
Back to top
 
IP Logged
 
worker-rider
In The Loop
*****
Offline



Posts: 962
Location: concord nc
Joined: 12/18/04
Re: Bike Storage
Reply #2 - 12/11/13 at 2:04am
Print Post  
Just watch out for valve stem. I caught one once and only once.
  
(You need to Login or Register to view media files and links) (Attachment deleted)
Back to top
 
IP Logged
 
KitJ BBQman
Big Ring
*****
Offline


This is gonna hurt!

Posts: 2525
Location: Matthews, NC
Joined: 01/20/09
Re: Bike Storage
Reply #3 - 12/11/13 at 3:28am
Print Post  
Avlrider wrote on 12/11/13 at 1:59am:
What ideas do you have for storing bikes for limited floor/garage space?  My question is when hanging bikes by the wheels on hooks,..does this hurt the wheel in any way??


Just as a point of reference, 25 pound bike hung from 2 wheels is 12.5 pounds per wheel.  When I drop off of a 2 ft drop: 220 Lbs (that would be in the morning naked)  x 2 ft drop pressure on 2 wheels ~= 250 lbs per wheel (i.e. this is just a guestimate).  Which one will do more damage?  Cheesy   

damn I'm bored.
  
(You need to Login or Register to view media files and links) (Attachment deleted)
I used to ride; now I just drink and cry about not riding.
Back to top
AIM  
IP Logged
 
JR
Big Ring
*****
Offline



Posts: 1040
Joined: 03/29/11
Re: Bike Storage
Reply #4 - 12/11/13 at 5:18am
Print Post  
KitJ BBQman wrote on 12/11/13 at 3:28am:


Just as a point of reference, 25 pound bike hung from 2 wheels is 12.5 pounds per wheel.  When I drop off of a 2 ft drop: 220 Lbs (that would be in the morning naked)  x 2 ft drop pressure on 2 wheels ~= 250 lbs per wheel (i.e. this is just a guestimate).  Which one will do more damage?  Cheesy  

damn I'm bored.


245 pounds falling from a height of 2 feet with acceleration of gravity and an impact distance of say 1/4" would yield an average impact force of ~24,800 pounds force, or ~12,400 per wheel.

This isn't taking in to account the deflection of the tire to ease the impact to the rim itself. Your psi may vary. Wink

...and yes, I'm also bored...
« Last Edit: 12/11/13 at 5:49am by JR »  
(You need to Login or Register to view media files and links) (Attachment deleted)
"Don't rely on those who won't try"
Back to top
 
IP Logged
 
DursRemote
Coaster Bike
**
Offline


Work Ride Tarheel Trailblazers

Posts: 189
Location: Charlotte
Joined: 09/05/12
Re: Bike Storage
Reply #5 - 12/11/13 at 12:37pm
Print Post  
JR wrote on 12/11/13 at 5:18am:


245 pounds falling from a height of 2 feet with acceleration of gravity and an impact distance of say 1/4" would yield an average impact force of ~24,800 pounds force, or ~12,400 per wheel.

This isn't taking in to account the deflection of the tire to ease the impact to the rim itself. Your psi may vary. Wink

...and yes, I'm also bored...

I came up with 23,308 lbs, or 11,654 per wheel. Close enough to yours that we probably used the same equations. But 1/4" impact distance is far too small if you ask me. The majority of that mass is the rider, who bends his legs on landing, absorbing several inches. And any suspension the bike has will also compress. 

Additionally, if there's a lander or 'tranny' to the drop, you get additional effective impact deflection of d=vtTan(Θ) where v is rider speed, t is duration of impact in seconds, and Θ is the lander angle, in radians. Plugging in some numbers I felt were reasonable, I came up with 373 lbf per wheel for a 2' drop to 15° lander. Still significantly lower than any static load hanging from a wall.

I wonder when the trails will open again.
  
(You need to Login or Register to view media files and links) (Attachment deleted)
Back to top
 
IP Logged
 
JR
Big Ring
*****
Offline



Posts: 1040
Joined: 03/29/11
Re: Bike Storage
Reply #6 - 12/11/13 at 1:10pm
Print Post  
~18" impact distance? Seems legit.

I did my equation trying to figure out impact to the bike, rather than impact to the rider.

The only deflection the wheels would have would be the tires compressing.
A rider "collapsing" on a landing would experience significant less force than the wheels.
« Last Edit: 12/11/13 at 1:18pm by JR »  
(You need to Login or Register to view media files and links) (Attachment deleted)
"Don't rely on those who won't try"
Back to top
 
IP Logged
 
johnski
Small Cog
***
Offline



Posts: 379
Location: Concord, NC
Joined: 07/10/11
Re: Bike Storage
Reply #7 - 12/11/13 at 1:12pm
Print Post  
This pully/hoist is a great system if you've got really tall ceilings in the garage, like mine.  Around $10 at harbor freight... (You need to Login or Register to view media files and links)

(You need to Login or Register to view media files and links)
« Last Edit: 12/11/13 at 3:36pm by johnski »  
(You need to Login or Register to view media files and links) (Attachment deleted)
Back to top
 
IP Logged
 
DursRemote
Coaster Bike
**
Offline


Work Ride Tarheel Trailblazers

Posts: 189
Location: Charlotte
Joined: 09/05/12
Re: Bike Storage
Reply #8 - 12/11/13 at 4:14pm
Print Post  
JR wrote on 12/11/13 at 1:10pm:
~18" impact distance? Seems legit.

I did my equation trying to figure out impact to the bike, rather than impact to the rider.

The only deflection the wheels would have would be the tires compressing.
A rider "collapsing" on a landing would experience significant less force than the wheels.

By using a weight of 245 lbs, you were looking at impact to the bike/rider system. You used the total mass and initial height to calculate potential energy, all of which is converted to kinetic upon landing (point where height = 0). You then used the work-energy principle: total energy dissipated = F*d. The d is the amount the system CG gets displaced upon contacting the ground. When you don't allow for much deflection, you're correct in that very high impact forces can occur. This is why cush-drives are used in motorcycle sprockets, car bodies are designed to deform during crashes, and bike riders absorb landings with their legs. 

In case you still aren't convinced, imagine standing one of your bike wheels up and balancing a toyota corolla on top of it. Then add a nissan sentra, a ford focus, and a honda accord. This puts as much load on the wheel as you calculated for a 2' drop. 
  
(You need to Login or Register to view media files and links) (Attachment deleted)
Back to top
 
IP Logged
 
JR
Big Ring
*****
Offline



Posts: 1040
Joined: 03/29/11
Re: Bike Storage
Reply #9 - 12/11/13 at 4:51pm
Print Post  
DursRemote wrote on 12/11/13 at 4:14pm:

In case you still aren't convinced, imagine standing one of your bike wheels up and balancing a toyota corolla on top of it. Then add a nissan sentra, a ford focus, and a honda accord. This puts as much load on the wheel as you calculated for a 2' drop. 


I wasn't arguing your calculation at all. As stated, I didn't allow for a lot of deflection nor an angled lander.
I believe your calculation of 373 lbf to be pretty accurate.
  
(You need to Login or Register to view media files and links) (Attachment deleted)
"Don't rely on those who won't try"
Back to top
 
IP Logged
 
JimShoe
Big Ring
*****
Offline



Posts: 1147
Location: Charlotte
Joined: 12/17/06
Re: Bike Storage
Reply #10 - 12/11/13 at 6:18pm
Print Post  
This thread should be mandatory in a schools math class!!!!
  
(You need to Login or Register to view media files and links) (Attachment deleted)
When the government takes responsibility for the people, the people will no longer take responsibility for themselves
Back to top
 
IP Logged
 
182
Coaster Bike
**
Offline



Posts: 181
Joined: 02/20/10
Re: Bike Storage
Reply #11 - 12/11/13 at 9:13pm
Print Post  
This thread should be mandatory in a schools math class!!!!

As should mountain biking in a school's P.E. class
  
(You need to Login or Register to view media files and links) (Attachment deleted)
Have a GREAT day!!!
Back to top
 
IP Logged
 
KitJ BBQman
Big Ring
*****
Offline


This is gonna hurt!

Posts: 2525
Location: Matthews, NC
Joined: 01/20/09
Re: Bike Storage
Reply #12 - 12/12/13 at 12:13am
Print Post  
The sad thing is that when I left App State to get an electronics degree from CPCC, I was about 18 hours short of having a physics degree, and I was too lazy to look up the formulas you guys used.

damn I'm bored...

OP: it is ok to hang your bike by the wheels.
  
(You need to Login or Register to view media files and links) (Attachment deleted)
I used to ride; now I just drink and cry about not riding.
Back to top
AIM  
IP Logged
 
The Cycle Path
IB Room
In The Loop
Project Board
Offline


Treasurer '11 to '18.
Trail Chair '12-'18,
'20-'21

Posts: 11858
Location: Lake Norman
Joined: 08/04/03
Re: Bike Storage
Reply #13 - 12/12/13 at 12:47am
Print Post  
But your assumption that the force on each wheel is equal assumes the weight is distributed evenly (F/R weight ratio) and that both wheels make contact at the same time. Smiley
  
(You need to Login or Register to view media files and links) (Attachment deleted)
We carry the finest from Specialized, Yeti, Transition, and Kona.
Back to top
WWWFacebook  
IP Logged
 
Robert C.
Big Ring
*****
Offline


Leaves are the ultimate
trail maintenance tool

Posts: 1806
Location: Available upon request
Joined: 11/22/04
Re: Bike Storage
Reply #14 - 12/12/13 at 4:03am
Print Post  
Math aside make sure you screw whatever is going to hold the bike into a stud.  Nothing sucks more than coming home and finding your bike down from the wall / ceiling sitting on your (wife's) car.
  
(You need to Login or Register to view media files and links) (Attachment deleted)
Back to top
 
IP Logged
 
BigBikeMike
Project Board
Offline


Work Ride Tarheel Trailblazers

Posts: 1593
Joined: 06/14/09
Re: Bike Storage
Reply #15 - 12/14/13 at 4:06pm
Print Post  
I screwed 4 large plastic covered hooks in the floor joist under my house at Snowshoe to storing my DH bike for the summer. I hang it by the seat and handlebars. I don't have enough space  for a system like Johnski has. If I take both bikes, I have a place for 2 bikes. If I have others come up, we can put all 4 bikes under the house for protection.
  
(You need to Login or Register to view media files and links) (Attachment deleted)
Back to top
 
IP Logged
 
QueenCity Bicycles
In The Loop
*****
Offline


Fight for your right to
Bike!

Posts: 1524
Location: 128 E Park Ave SouthEnd
Joined: 06/23/04
Re: Bike Storage
Reply #16 - 12/14/13 at 4:34pm
Print Post  
We have a bunch of used rubber hooks for $1 each and some new ones for a little more
  
(You need to Login or Register to view media files and links) (Attachment deleted)
Bart Stetler
QueenCity Bicycles
128 E Park Ave Suite A
Clt NC 28203
704-522-7006
[email protected]
(You need to Login or Register to view media files and links)
Back to top
WWWFacebook  
IP Logged
 
All Seasons
Coaster Bike
**
Offline


Work Ride Tarheel Trailblazers

Posts: 93
Location: Mooresville
Joined: 01/10/10
Re: Bike Storage
Reply #17 - 12/16/13 at 9:50pm
Print Post  
What I don't see here in all of this Fuzzy-Physics is an allowance for Unicorns and Jello Pudding. C'mon now, let's get serious up in here!

  
(You need to Login or Register to view media files and links) (Attachment deleted)
Back to top
 
IP Logged
 
Page Index Toggle Pages: 1
Print
‹ Previous Topic | Next Topic ›
 
  « Board Index ‹ Board Top  

Tarheel Trailblazers Message Board » Powered by YaBB 2.6.12!
YaBB Forum Software © 2000-2025. All Rights Reserved.