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Crank: knife-edged?
Posted: Tue Jul 13, 2010 7:20 pm
by Lummy
Hi all,
I know nothing about cranks, however I currently have my sump off and couldn't help but notice that my crank wasn't completely stock-looking.
Is this considered to be knife-edged or is it just a bit of grinding to balance it up? Not all counter-weights are done evenly - some have very little grinding, some have quite a bit.
Posted: Tue Jul 13, 2010 9:11 pm
by 2000_turbo
It looks like they did some work to your crank, but they did very little work.
Stock crank.
Knife edge crank.
Gr,
Martijn.
Posted: Wed Jul 14, 2010 5:14 am
by OLD FART
Martijn how did you get into my shed to take a pic of my knife edged crank
:? LOL
My KE'd crank is for sale :D
Posted: Wed Jul 14, 2010 5:53 am
by 2000_turbo
OLD FART wrote:Martijn how did you get into my shed to take a pic of my knife edged crank
:?
The "doc" converted the flux capacitor into a transporter and build it in my Lancer... LOL
Gr,
Martijn.
Posted: Wed Jul 14, 2010 9:45 pm
by rodney007
what does knife edged crank do,,..
thanks
Posted: Wed Jul 14, 2010 10:26 pm
by redzone
rodney007 wrote:what does knife edged crank do,,..
thanks
IT SLICES!
IT DICES!
IT JULIENNES!
Posted: Thu Jul 15, 2010 5:13 am
by OLD FART
They are said to improve responce by being lighter as well as having less drag.
If you want to see some radical cranks google BUTCHER CRANKS
Posted: Thu Jul 15, 2010 5:07 pm
by thrash
is it correct to assume that this sort of mod would have an impact on response and driveability similar to that of a lightened flywheel?
I'm also assuming the machine shop needs to take care to ensure that the end product is balanced yes?
Posted: Thu Jul 15, 2010 6:01 pm
by bridgey
OLD FART wrote:Martijn how did you get into my shed to take a pic of my knife edged crank
:? LOL
My KE'd crank is for sale :D
what kind of $$$$$$? PM me maybe?
Posted: Thu Jul 15, 2010 8:31 pm
by rodney007
redzone wrote:rodney007 wrote:what does knife edged crank do,,..
thanks
IT SLICES!
IT DICES!
IT JULIENNES!
oh... ?
Posted: Fri Jul 16, 2010 5:59 am
by OLD FART
bridgey wrote:OLD FART wrote:Martijn how did you get into my shed to take a pic of my knife edged crank
:? LOL
My KE'd crank is for sale :D
what kind of $$$$$$? PM me maybe?
Mate it was machined by a fitter machinist who competed in Targa Tasie 3 times and finished. It was for but never got into his lancer 2000
HE WAS 73 YEARS YOUNG THEN But unfortunately fell off the roof of s new shed he was building
If you are serious I would have it checked to ensure that it is A OK & find out the postage to NZ
Cheers
Rad
Posted: Fri Jul 16, 2010 5:57 pm
by redzone
rodney007 wrote:redzone wrote:rodney007 wrote:what does knife edged crank do,,..
thanks
IT SLICES!
IT DICES!
IT JULIENNES!
oh... ?
being from NZ you wouldnt have seen the mouli ad on TV that was from..
Posted: Fri Jul 16, 2010 6:52 pm
by bridgey
OLD FART wrote:bridgey wrote:OLD FART wrote:Martijn how did you get into my shed to take a pic of my knife edged crank
:? LOL
My KE'd crank is for sale :D
what kind of $$$$$$? PM me maybe?
Mate it was machined by a fitter machinist who competed in Targa Tasie 3 times and finished. It was for but never got into his lancer 2000
HE WAS 73 YEARS YOUNG THEN But unfortunately fell off the roof of s new shed he was building
If you are serious I would have it checked to ensure that it is A OK & find out the postage to NZ
Cheers
Rad
well I have had an estimate of $240 +gst to fix my crank so am looking at other options too
Posted: Sat Jul 17, 2010 5:12 am
by OLD FART
Mate it was machined by a fitter machinist who competed in Targa Tasie 3 times and finished. It was for but never got into his lancer 2000
HE WAS 73 YEARS YOUNG THEN But unfortunately fell off the roof of s new shed he was building
If you are serious I would have it checked to ensure that it is A OK & find out the postage to NZ
Cheers
Rad[/quote]
well I have had an estimate of $240 +gst to fix my crank so am looking at other options too[/quote]
By "fix it " hopefully that does not involve grinding it undersize as that will require re nitradeing .IMHO you will be better off with a crank that tests straight and only requires linishing of the bearing surfaces
Posted: Sat Jul 17, 2010 8:05 am
by bridgey
OLD FART wrote:Mate it was machined by a fitter machinist who competed in Targa Tasie 3 times and finished. It was for but never got into his lancer 2000
HE WAS 73 YEARS YOUNG THEN But unfortunately fell off the roof of s new shed he was building
If you are serious I would have it checked to ensure that it is A OK & find out the postage to NZ
Cheers
Rad
well I have had an estimate of $240 +gst to fix my crank so am looking at other options too[/quote]
By "fix it " hopefully that does not involve grinding it undersize as that will require re nitradeing .IMHO you will be better off with a crank that tests straight and only requires linishing of the bearing surfaces[/quote]
have not yet taken the crank for a proper assessment but it will probably need a 30-40thou grind