NOX
Needs a job
PMRA / TMRC Super Street 4022
Posts: 3745
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posted December 15, 2006 09:40 PM
I may try it.........., will have to see..........
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42 Wins
21 Runner-ups
2010 TMRC Super Street Points Champion
2010 PMRA Super Street #3 Points
2009 PMRA Super Street Points Runner-Up
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stef12rr
Expert Class
Posts: 144
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posted December 16, 2006 11:13 AM
i check with some freinds
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stef12rr
Expert Class
Posts: 144
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posted January 04, 2007 04:15 PM
OK guys yesterday I went to balance my crank and suprise! The guy was not able to balance it !!!! I explained to him that I took some weight out , and I told him it's got a balancer, he said oups the crank is not balanced since you removed your balancer!! We checked the crank to know where the problem was. Go check this page : http://zxzone.com/cranks.html (this is a zx 12 crank) I did exactly the same cut , but I removed less weight. If you don't want to take off some weight you have to take approx. 100g on the down mass of the picture to pre-balance. You can even make a machine to prebalance; it very easy. You need 4 bearings (empty and clean the grease off for less friction) and a stand high enough to clear the table. You then put the crank on it and let the gravity do the work.
After you can have it balanced on the machine.
If you take the balancer out without balancing the crank, you will have torsion on the crank and in the long run the crank could crack.
100g doesn't seem much and that's why the guys don't feel any vibrations.
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Megabyte
Pro
Posts: 1047
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posted January 04, 2007 04:26 PM
quote:
If you take the balancer out without balancing the crank, you will have torsion on the crank and in the long run the crank could crack. .
This is really getting confusing.... I was told that my 12 crank was balanced to 100,000 rpms ?
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We First make our habits and then our habits make us.
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Y2KZX12R
Needs a job
CompetitionCNC.com
Posts: 3762
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posted January 04, 2007 05:24 PM
Again, the "balancer" in the zx12r engine IS NOT a "balancer". It does not balance anything.
It has absolutely nothing to do with the primairy balance of the crankshaft.
When you spin up the crankshaft of a zx12r engine on the machine to check the primairy balance you dont add bob weights, its neutral, and the machine tells you the grams of out of balance it is.
And again, the "balancer" on the zx12r is not for absorbing torsional harmonics of the crankshaft like one on a car or truck is.
This isnt a car engine. 
The only reason that "balancer" is even in there is for your comfort.
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Y2KZX12R
CompetitionCNC.com
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Megabyte
Pro
Posts: 1047
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posted January 04, 2007 06:36 PM
quote:
Again, the "balancer" in the zx12r engine IS NOT a "balancer". It does not balance anything.
It has absolutely nothing to do with the primairy balance of the crankshaft.
When you spin up the crankshaft of a zx12r engine on the machine to check the primairy balance you dont add bob weights, its neutral, and the machine tells you the grams of out of balance it is.
And again, the "balancer" on the zx12r is not for absorbing torsional harmonics of the crankshaft like one on a car or truck is.
This isnt a car engine.
The only reason that "balancer" is even in there is for your comfort.
Thanks Y2k, I needed that, not that I doubted your earlier posts 
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We First make our habits and then our habits make us.
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stef12rr
Expert Class
Posts: 144
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posted January 05, 2007 11:10 AM
ok Y2KZX12R that's is a very good conversation and in a way you secure me , but if you don't time the crank with the balancer what gonna happen?
My crank was not neutral on the machine one side was heaver , and i did not have vibration Megabyte your balancer is out and you did balance the crank ?
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Y2KZX12R
Needs a job
CompetitionCNC.com
Posts: 3762
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posted January 05, 2007 08:45 PM
quote:
ok Y2KZX12R that's is a very good conversation and in a way you secure me , but if you don't time the crank with the balancer what gonna happen?quote]
It will be out of phase with the fireing of the cylinders. It wont be able to cancel out the vibrations and can actually amplify them.
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Y2KZX12R
CompetitionCNC.com
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stef12rr
Expert Class
Posts: 144
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posted January 06, 2007 01:23 PM
them you are a good!! Y2
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stef12rr
Expert Class
Posts: 144
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posted January 08, 2007 09:17 AM
The crank is balance and the weight is 21lbs
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Y2KZX12R
Needs a job
CompetitionCNC.com
Posts: 3762
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posted January 09, 2007 03:06 AM
Was it difficult to remove enough material on the journal side to balance it?
What was the total weight you removed?
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Y2KZX12R
CompetitionCNC.com
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stef12rr
Expert Class
Posts: 144
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posted January 11, 2007 06:23 PM
yes it was difficult it's very hard métal and the crank a the beginning was 25lbs and after the balanced it , i got a flat 22lbs
if you want to do it on the tour you need a special stone very hard and you can only take off .010'' each time
you can take off about 3/4 lbs on the magnet
i got pic if you want
and we gonna be in NY friday night
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Y2KZX12R
Needs a job
CompetitionCNC.com
Posts: 3762
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posted January 12, 2007 12:23 PM
Stef, where are ya from?
We'll have to pick a spot to meet at the show. Were going to be there for noon when it opens and be out of there by 4 i would guess.
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Y2KZX12R
CompetitionCNC.com
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stef12rr
Expert Class
Posts: 144
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posted January 12, 2007 02:30 PM
themmmm we all finish working at 4 on friday and after we gonna jump in the car and drive to NY my guest we gonna be over there around midnight , i was oupping that you will be there until this time and after we could go take a beer!
we are gonna go on saterday at the bikes show.
see what you can do
this is my email personal stephane-k@videotron.ca
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Y2KZX12R
Needs a job
CompetitionCNC.com
Posts: 3762
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posted January 13, 2007 04:42 AM
Damn, we'll most likely be in midtown having a beer by 430. I'll be with a group of 6 so i cant hold them up. Usually a few hours is all i can take of the bike show.
But they do have good coctails there. I may buy a new helmet there if they have good show prices. As long as they can beat $330 for an RF1000.
I need more zooks too. Oh, and an 07 calander full of chicks too.
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Y2KZX12R
CompetitionCNC.com
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stef12rr
Expert Class
Posts: 144
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posted January 13, 2007 03:25 PM
hihihihihihihihi DAMMnn it is to bad but if you came in montréal to visite let me know i will show around :o)) full of chicks here to
me to i am looking for a helmet
http://www.hjchelmets.com/ac12_carbon.htm this one
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Y2KZX12R
Needs a job
CompetitionCNC.com
Posts: 3762
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posted January 15, 2007 01:59 PM
I found a guy selling NEW RF-1000's for $265 + shipping $285 on Ebay.
Just ordered one.
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Y2KZX12R
CompetitionCNC.com
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TRNorBRN6001
Needs a job
Posts: 2021
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posted January 16, 2007 09:04 AM
Stef, just curious what the 3/4 off the magnet looked like if you do not mind sharing pictures.
Thanks,
Gary
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TFA 200MPH CLUB MEMBER!
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stef12rr
Expert Class
Posts: 144
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posted January 17, 2007 02:32 PM
i will like to sens pic but i don't know how and if i can?
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entropy
Moderator
Posts: 8671
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posted January 17, 2007 03:27 PM
quote:
i will like to sens pic but i don't know how and if i can?
Stef,
send me the pic and i'll post it for you 
guntekd@chevrontexaco.com
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stef12rr
Expert Class
Posts: 144
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posted January 18, 2007 02:22 PM
it's done
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entropy
Moderator
Posts: 8671
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posted January 19, 2007 12:09 AM
quote:
it's done
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stef12rr
Expert Class
Posts: 144
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posted January 19, 2007 01:00 PM
YA cool thanks entropy
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TRNorBRN6001
Needs a job
Posts: 2021
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posted January 19, 2007 01:33 PM
Thats an 02-05 Flywheel/Crank correct? Washer looks a little different also than on 00-01or did you have that made? Did you take the metal off the outside?
As a side note Marine Crank charges $65 to spin up and balance a crank.
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stef12rr
Expert Class
Posts: 144
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posted January 19, 2007 02:10 PM
yes i made a new washer ( alu) with the right inside dia of the flywheel now the bolt is center i took the thread off ,, I don't need it,, i took off some métal outside the fly !! with the lead an some on the back too
et voila
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