wheel balancing ?

[DAVE01]

what do you think of this this balancer ?

http://cgi.ebay.com.au/Portable-Motorcyc...2162wt_905

[1300hayabusa]

what do you think of this this balancer ?

http://cgi.ebay.com.au/Portable-Motorcyc...2162wt_905

Thats all you need and money well spent at that price ,make sure they don't shaft you on the postage
Good find

[fasterfaster]

[DAVE01]

what do you think of this this balancer ?

http://cgi.ebay.com.au/Portable-Motorcyc...2162wt_905

Thats all you need and money well spent at that price ,make sure they don't shaft you on the postage
Good find

$145 delivered+14 for larger cones (not sure if I needed them but just got them incase )

[steventh]

Buy this one instead.

Buy three pieces of 4*1. Join them together to make a U.

Put your wheel while still on its axle on the top of the U.

Jiggle the axle and the wheel will rotate. Put on weight.
Jiggle again - put on more weight if required.
jiggle.......

If you want extra sophistication make sure the tops of the boards are perfectly horizontal. Put the wheel with its axle on and let the axle rotate..add weights...

Job done

[Maj]

Too much resistance in the seals to be very accurate Seventh, the ones above have lighter bearings for the axle to roll in and are quite sensitive, , easy to make too, :)

[steventh]

Agree that the others are better.

Depends if you want "perfection" or happy with something that does a "good enough" job. Ive never had a problem with wheel wobbles etc using this method. For many this method wont give them the confidence they want.

Cheers

[Skidmarx]

well, me not knowing if an out of balance tyre caused my stack (wouldnt think so, but i know how violent unbalanced drag car tyres can be) ill never be taking that chance, after the screwups by my local base hospital, i dont want to live through my next stack

[steventh]

Hi Skidmarx,

Im not trying to get into an argument but your statement implies that the "good-enough" method may lead to a tyre being risky because its not properly balanced.

I consistently get my tyres in balance within 5grms. This is typically the smallest weight and no shop I have ever been to uses smaller. In every case my balancing has been better than the shops.

I know this because my tyres rotate and either stop at the same place every time (slightly out of balance) so that if I put a 5grm weight at the top the tyre falls so the weight is at the bottom - so its balanced within 5grm.

Or it rotates and stops at different places each time meaning its pretty much spot on.


Cheers

[fasterfaster]

Hi Skidmarx,

Im not trying to get into an argument but your statement implies that the "good-enough" method may lead to a tyre being risky because its not properly balanced.

I consistently get my tyres in balance within 5grms. This is typically the smallest weight and no shop I have ever been to uses smaller. In every case my balancing has been better than the shops.

I know this because my tyres rotate and either stop at the same place every time (slightly out of balance) so that if I put a 5grm weight at the top the tyre falls so the weight is at the bottom - so its balanced within 5grm.

Or it rotates and stops at different places each time meaning its pretty much spot on.


Cheers

Your probably not that spot on actually for as Maj has allready said the resistance to rotation that the seals have on the axle shaft would require much more than 5 grams to over come ......... hence why most balancers have the bearings for axle to rotate on. In saying that if a wheel (front) had so much imbalance to the point that it shook the steering head then if the rider left this unattended to he deserves to fall off ............ sadly. You would feel excessive imbalance thru the bars long before it was bad enough to cause a fall.
We are talking about a Busa = High Performance Machine not a postie bike

[Maj]

big slappers, and i have had 2 on 2 different bikes , are usually caused by road conditions initiating the problem , mine were both corrigated road caused by trucks .. then that shows up a problem, mine was headstem bearing on a triumph daytona and low pressure front tire on a gix 750 , both resulted in lock to lock slapper with sore wrists and scuff marks on the sides of the tires nearly up to the rim, lasted about 2 looooong seconds, and afterwards your looking back over your shoulder wondering WTF was that....... slowly ride home and give the bike a real good checkup

[steventh]

"Your probably not that spot on actually for as Maj has allready said the resistance to rotation that the seals have on the axle shaft would require much more than 5 grams to over come"

How do you work that out? if i put 5grms on either side and the wheel falls to that side the 5gm has overcome the resistance. You jiggle the axle to "break" the inertia or overcome the resistance of the seals.

If you use the method of having the top of the stand horizontal and letting the axle rotate the seals have no impact.

I may not be that spot on but "on" enough to not feel any wobble at all when I go down the back straight at EC at 230+. Thats good enough for me, it may not be for others.

Im not telling anyone to balance their tyres the way I do just that you dont need stands with roller bearings to do it - but if you want to go for it.

Perfection is not required.

Cheers

[Skidmarx]

As i said, im not to sure about bike tyres, but i am a qualified and very experienced car/4wd/truck tyre fitter, wheel aligner and mechanic, yes within 5 grams is great and wont create any dramas, i dont know all the history of my bike so i cant say, but for the price of buggerall, i personaly will have mine balanced, SOMETHING caused my steering to slap, im going to rule out all possibilitys, i dont intend on living through that pain again

[cyndemgum]

Thats why I only use 2 needle roller bearings in my home made balancer. They are little end bearings from ryobi whipper snippers and don't have seals. Simply lube them up with light weight oil each use.Paul.

[BLACKZOOK]

Never seen one of those static balancer setups before Tomrux interesting idea mate.

I have balanced dozens of 12 mtr diameter cooling tower fans each weighing near 1000kgs on a static jig, these things run continiously at enormous speeds and the balance has to be perfect, sometimes it can take all day to get right.

There is nothing at all wrong with static (vertical -on bearings - by hand) balancing if done to within a few grams.