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Lightened crankshaft motorcycle. We also knife edge the weights.
- Lightened crankshaft motorcycle they lighten the crank for the same reason you get a lightened flywheel. Has any body here had work done by them before? Maybe the "lord of combustion"? Lighten the crankshaft assembly give the opportunity to rev it harder, but you loose some inertia, it's not really so benefic Re: Lightened Crankshaft advantages/disadvantages? The Masi crank weighs 53# (verified on 2 different scales now). Is the cost worth it? What May 3, 2011 · The short answer is that you will likely see no gains in torque or HP with a lightened crank, but the engine will accelerate more quickly i. Jan 16, 2013 · Once the crank is lightened, the engine can spin up faster—and a faster-spinning crank equals a faster-moving motorcycle. Is a 69 crankshaft usable in a 72 engine? Are there any differences other than the bolts/studs that hold them together? Oct 18, 2017 · Since GUY and others have pointed out that a lightened crankshaft is a smile generator. Jan 7, 2012 · I cannot imagine making changes along the lines of modifying the crankshaft to change the stroke of an engine and then not even bothering to balance it- that's hilarious. Dec 30, 2024 · Personally, I don't think the light flywheel is worth the effort. Motorcycle mechanics know this! All of my rebuilt crankshafts are assembled by a KOR trained technician. When you remove the crankshaft counterbalancer gear from your GSXR1000 there's no sense in keeping the heavy balancer mechanism in the cases. We also remove the balls and clean the oil ways of the sludge that naturally accumulates. The bike also features magnesium wheels, a World Superbike spec gearbox, a 1/4 turn throttle, billet racing pegs, Ohlins suspension, carbon fiber panels and a titanium exhaust with 70mm tubing and carbon mufflers. Lighten and Jan 16, 2013 · Once the crank is lightened, the engine can spin up faster—and a faster-spinning crank equals a faster-moving motorcycle. Hayabusa Motorcycle Engines Performance Parts - Extreme Engines EXT-10007A Suzuki GSXR-1300 Hayabusa Crankshaft Lighten & Balancing [EXT10007A] - Suzuki GSXR-1300 Hayabusa Crankshaft Lighten & Balancing Extreme removes excess weight from your crankshaft and then balances it to race specs. You wouldn't really want a light crank in an engine that is being used primarily for pulling/low end torque, because the extra weight increases reciprocating momentum, and can aid in the Aug 19, 2016 · Flywheel Effect Technical Editor Kevin Cameron shares his wealth of motorcycle knowledge, experiences, insights, history, and much more. The Falicon Supercrank is the “ultimate” crankshaft modification for knife-edge performance. Aug 19, 2016 · Flywheel Effect Technical Editor Kevin Cameron shares his wealth of motorcycle knowledge, experiences, insights, history, and much more. e. Jun 10, 2011 · Yes, you'll improve acceleration with a lighter, balanced crank but you'll reduce the range when the bike runs smoothly with a stock lightened crank. There is no downside to a lighter crank other than the cost to do the work , it’s a bunch of machine work. Oct 25, 2013 · crankshaft, lighten and balance? Jump to Latest 1. If I wanted to race the bike, I could slap in my sexy 2. However, a lightweight crank, light rods, pistons and flywheel will result in performance increase at higher RPM in an application with proper gearing. The crankshafts have the oil holes modified to provide more oil to the bearing. I don't know how much it was lightened, only way to tell is to Honda CB750K Race Crankshaft Lightened and knife edged crankshaft by RPE Racing in Australia as used on our race bike. I can't speak for our SOHC bikes, but in air cooled VWs, a lightened crank and/or flywheel would let the motor achieve high revs sooner/faster, but at the expense of low end torque. The crank throws are contoured and polished to a mirror finish, improving oil flow and reducing crankcase turbulence. From his point of view a lightened crank causes its ability to accelerate faster not a good thing as that Mar 30, 2009 · One of the engineers I worked with at czysz quite closely with did alot of the design changes and drawings for the C1 cranks just finished a Engineering paper on the New 2009 R1 crossplane crank, you'll see it published in some motorcycle magazines. Lighter crankshafts will decrease rotating mass, providing for quicker acceleration and higher rpm potential. Capische? May 12, 2009 · One of motoman's smaller side trick was going against the grain of lightening or knife edging the crankshafts. May 13, 2023 · Wondering if anyone has ever had their oil cooled crankshaft balanced? or checked for balance? I'm doing a rebuild and I'm balancing the rods and pistons, and now wondering if I'm wasting my time if the crankshaft itself is out of balance more than my final rod/piston balance. The recontoured counterweights have less drag spinning through the oil mist resulting in more power to the wheel. Then when I feel like being civilized, Ill knock my other one back on. Throttle control is the key to maintaning traction. Dec 13, 2005 · So this motor I bought has a lightened crank. Most people don't own the proper equipment to check the crankshaft when it returns from the shop. I would guess Jun 18, 2003 · knife edging is when they lighten the crank. This vital component plays a pivotal role in converting the linear motion of the pistons into the rotational motion that drives the wheels. Apr 6, 2009 · Lightening the rotor seems like an easy external way to get quicker revs like a lightened crank would. APE is known world-wide for our race prep on four cylinder plain-bearing crankshafts. I would call it more rider preference than an actual fact that a heavier crank is better. The vibration trade off at freeway speeds may be more annoying than the pleasure of slightly more snap. Understanding how crankshafts function, their types, and their applications can enhance your The problem with getting your crankshaft rebuilt is that it always looks OK. APE experts have reworked every kind of four cylinder plain bearing motorcycle crank there is. Jul 12, 2015 · The 68-70 complete assembled crankshaft has a different part number from the 72 complete assembled crankshaft but the flywheel, and both sides have the same numbers. Oct 30, 2002 · Advantages/Disadvantages To lightening a crankshaft Performance TalkIt depends on the application. Jan 1, 2006 · We can see that there's a spring drive in most motorcycle clutches to smooth out this crank speed variation so that the gearbox doesn't have to endure a series of hammer blows from the cylinder firings. The HP/Torque numbers will not change, but your ET should be slightly better due to the engine being able to RPM slightly quicker. 7 lb (or whatever) rotor and climb the rpm's like a pimpled teen on an amazon woman. The WATCH Pro Street champ Rodney Williford talking crankshafts and engine valves. The who's who of racing depend on APE cranks for performance and dependability. The recontoured counterweights have less drag spinning through the We specialize in repairing and replacing Harley Twin Cam crankshafts. Lightweight internal engine components in a heavy vehicle with tall gears won't result in positive results. Lightened crankshafts rev much quicker. Remove the balancer mechanism and its bearings and replace everything with this lightweight aluminum dummy shaft. . Mar 18, 2017 · A lightweight crankshaft by itself will not provide any performance increase. build RPM faster. We machine the crankshaft (from 9. Jan 1, 2010 · Modifications include racing camshafts, race pistons and titanium connecting rods, all connected to a lightened crankshaft. I have been considering sending a crank to Falicon and let them do their extra light supercrank service. This results in less rotational inertia, free revving, less gyroscopic effect and a lighter motorcycle. That's a popular mod for Ducatis but I've never heard of anyone doing it on a Norton. May 18, 2025 · The Ultimate Guide to Motorcycle Crankshafts: Understanding, Types, and Applications The crankshaft is often regarded as the heart of a motorcycle’s engine. If you need the engine to transition from one rpm range to another very quickly (think motorcycle), then a light crank is for you. Over 28 years experience modifying motorcycle cranks is available for your motorcycle. I don't know how much it was lightened, only way to tell is to Mar 30, 2009 · One of the engineers I worked with at czysz quite closely with did alot of the design changes and drawings for the C1 cranks just finished a Engineering paper on the New 2009 R1 crossplane crank, you'll see it published in some motorcycle magazines. May 16, 2024 · Over 28 years experience modifying motorcycle cranks is available for your motorcycle. 1kg to be exact fitted with a steel Carrillo conrod and RE15 roller bearing big end . So I'm wondering if it's a good thing or a bad thing. May 12, 2009 · Basic physics will tell you a lighter crank will increase your ability to accelerate, dependent upon traction of course. The flywheel has been machined down a bit. Re: Lightened Crankshaft advantages/disadvantages? Almost as a matter of physics, there is a conflict between accelerating a rotating assembly and running it at very high rotational speeds. Then it is computer balanced for continued operation to 14,000 RPM. 6 to 6. Trust our expert technicians for top-notch motorcycle crankshaft services. An offset crank, balanced at 50% can be 4-5 pounds lighter then stock and be smooth from 3000-6500rpm. No loss of torque, spins up quicker , easier on the main bearings ,less vibration due to the APE removes excess weight from your crankshaft and then balances it to race specs. The OEM crankshaft is blueprinted to the best combination of oil clearance and precise tolerance for your specific application. pistons (~13:1). Nov 15, 2004 · Balanced and Lightened crank Q\\'s I have my motor apart, and I'll be installing some stock bore high comp. We also knife edge the weights. knife edging weakens the crank. Instead he says to leave it stock or at least have it just balanced. 9kg). I'm thinking about lightening and balancing the crank, as that is about the level of extra cash I can afford to put in to it at the moment. 9K views 4 replies 4 participants last post by ccmhunt Oct 25, 2013 williamhbonney Discussion starter Jan 12, 2024 · Pros and cons of a lighter flywheel?G’day AsFarAsIGet, I have a lightened and rebalanced crankshaft, 9. Lighten and Apr 25, 2025 · Besides growing to 1250cc, the internals are also heavily reworked with new pistons, larger valves, and the biggest contributor to its free-revving nature, a lightened crankshaft. gwhip zqq vetx 3javo imym zu mjfe1dn 4qx6jg xfc hukq2