KX Riders
General => In General... => Topic started by: doordie on February 22, 2006, 06:55:43 AM
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Should I buy this crank or not? :|
My friend Mike Melde(supermoto) have this crank in Germany.
It?s a pro crank for Bernt Eckenbach, a former World Motocross driver for Kawasaki KX500 1998. 8-)
It?s make a huge different for the engine :-D
My wife?s gonna be crazy for sure :evil:
//doordie
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How much $$?
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Doordie,
I have met your wife - don't do it! I would like to see you this summer in Marma! :lol:
Go on, thell us the magic; why this is worth $$ big time!!
//John
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What's the story? Do I need one?
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We could put in an order for a few! Bulk discount.
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Tim, you the man!!! That is what I was getting to eventually. YES SHARE THE SECRET DA**IT!
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yes by all means.tell everyone why its worth a butt kicking.without seeing rod,it looks like its been plugged for tighter squeeze in crankcase and possible a little more torque down low.just guessing.
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Guys here is my explain!
This crank don?t vibes at all in any range between 500-8500rpm. :evil:
It have changed balance factor, not only trued! 8-)
You know vibes eat horsepower and kill engine. :-P
You can?t outbalance a single cylinder engine,only put vibes somewhere it
pass very fast or for not so long period. :x
Stock balance factor is set for 5000 rpm ,for most of us never rev past that
rpm or for a very short time ,when you do MX.
This crank is heavier at opposite place were rod is located, because of tungsten is in that holes,not iron.
This crank vibes between 0-500 rpm or 8500 rpm and above.
So you can win 1500 rpm here and a lot of power without vibration! :wink:
Still worth it? :|
//doordie
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Hey Doordie, whats the cost for that crank? Sounds like something my next desert racer needs. :mrgreen:
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bump*** Hey, still waiting on a price!!! lol
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He can?t efford it, we talking millions here :-D
No,about 350$ :|
//doordie
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doordie
how much does that crank weight.
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Your going to need the same piston,rings,pin and rod that your crank was balance for.
js,I bought it 2006 and it?s awesome(reduce engine braking and maintain more overrev),but your`e right about piston,rings and pin! :wink:
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doordie
was that a oem crank that was modified or a custom one off crank.
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doordie
was that a oem crank that was modified or a custom one off crank.
I think they used a oem crank and modified it...Bernt E were also very satisfied with this crank special made for his riding stile.
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I few years ago I designed a crank with adjustable weights for tuning for a certain rpm to eliminate vibration. the idea was simple, if you had the weights like you have on your crank set in slots instead of a fixed hole like yours, then you had an adjuster screw going through the weight so that you could adjust the weight to and from the center of the crank. this concept allow you to tune for frequency and adjust for different weights of pistons, pins, ect. with out changing out the weights. we spun the assembly to test. once we had the weight location for the desired setup to have min. vibration at a certain rpm. we redesigned the custom crank without weights. I worked on one for a Topfuel Harley.
Awesome solution! :-o
Got pics? :wink:
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You dont need to use the original parts they used to balance the crank. You mainly need their weights. As long as the replacement part weighs the same, your fine. WhenI used to build big block Mopars we would balance all the pistons respectively by removing small amounts of material from inside the piston. You weigh the piston, bearing, pin, clips, rings all at once.
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I few years ago I designed a crank with adjustable weights for tuning for a certain rpm to eliminate vibration. the idea was simple, if you had the weights like you have on your crank set in slots instead of a fixed hole like yours, then you had an adjuster screw going through the weight so that you could adjust the weight to and from the center of the crank. this concept allow you to tune for frequency and adjust for different weights of pistons, pins, ect. with out changing out the weights. we spun the assembly to test. once we had the weight location for the desired setup to have min. vibration at a certain rpm. we redesigned the custom crank without weights. I worked on one for a Topfuel Harley.
Awesome solution! :-o
Got pics? :wink:
Isn't this what the big factory riders use(used) so you can choose for difrent interea momentum of the crank??
Dutchie