The unbalance of the crank
The unbalance of the crank
I made a crank holder to be able to hold the crank while spinning it to feel the unbalance first hand.
Just a short video of it:
Just a short video of it:
- Roostius_Maximus
- Site Admin
- Posts: 4641
- Joined: November 16th, 2007, 3:24 pm
- Location: Mt Nebo, Manitoba, Canada
- Contact:
cool
http://www.youtube.com/user/500bigbore
My CR500 Tech Reference... http://sdrv.ms/1a0CIiz
MRE Components... http://sdrv.ms/1bs2zhd
My CR500 Tech Reference... http://sdrv.ms/1a0CIiz
MRE Components... http://sdrv.ms/1bs2zhd
- NightBiker07
- Posts: 1942
- Joined: April 16th, 2008, 8:59 pm
- Location: USA
the whole assembly must be balanced. meaning using the same piston you will be running. otherwise the tests and balancing will be worthless.
2000 CR250, pipe, filter, Vforce
1980 XL80s
1969 Broncco TX-6
Natural selection favors Smart people, so nature selects morons to be slow and dumb for tigers and stuff too eat. But in our modern world there just aren't enough tigers.
1980 XL80s
1969 Broncco TX-6
Natural selection favors Smart people, so nature selects morons to be slow and dumb for tigers and stuff too eat. But in our modern world there just aren't enough tigers.
No.NightBiker07 wrote:the whole assembly must be balanced. meaning using the same piston you will be running. otherwise the tests and balancing will be worthless.
Testing in the first movie was done with the complete piston weight to get a feel for how much it is vibrating,
but the static balancing was not done with the complete piston weight.
With 100% balance factor the assembly would be unrideable. No vibrations in vertical, but enormous in horizontal.
I did go for 50% balance factor, using the same piston weight I am running in the calculations, which is maybe what you meant.
This is how I measured the balance factor from the factory:
...and weighted the nuts:
-
- Posts: 4394
- Joined: July 4th, 2007, 6:57 pm