View My Garage. Why do bikes rev higher than cars? Higher RPM of a bike engine is due to 1 Small stroke piston speed is limited. Hence higher cycles per sec If you get rid of valve springs by means of pneumatic valves , have smaller stroke and light interernals you can have a car engine revving as high as a bikes F1 engines by cosworth ran over rpm in the last race with Williams.
Actually, any engine can have a high rev-limit, provided it has a low stroke, and the design specifications to support it valve height, weight, roller specs, flywheel weight, etc. High performance Hondas have always been rev-happy, straight out of the showroom.
Modded Skylines have been known to have 10K redlines, without reliability issues. Litre class engines and upwards do not rev that high. It's just the cc sportsters that have been known to rev above 15K; like the new R Originally Posted by veyron1. The small capacity bikes make piddly amount of torque, so they need to rev high to produce decent power.
This had a couple of upgrades, including a larger exhaust, different ratios, and different carbs, making this machine rev all the way up to rpm. Luckily, we have reasons to believe Kawasaki is planning to get back the four-cylinder quarter-liter albeit it going to have a lower scream. This meant that the first gear was kept short to reduce the need for more torque to pull away from a stop, and this was a fun way to begin your day.
Developed by an Australian engineer, this V8 monstrosity was inspired by the cc Moto Guzzi V8 GP engine and used parts from five different motorcycles. Using two FZR valve cylinder heads, the 4 cam, 32 valve engine also uses Yamaha pistons. The transmission is a six-speed cassette-type box with parts from a variety of manufacturers and slides out for service and delivers power through an FZR clutch.
The upside-down fork, wheels, and brakes come from an R1. With only half a dozen models built, this machine develops horsepower and will spin to rpm, and redlining all the way to rpm.
To set it all off, a gorgeous one-piece fiberglass bodywork was designed and fabricated in house and painted in glorious Ferrari Yellow.
Source: CycleWorld. Which are the Highest revving production motorcycles ever made? SP model: 21, The GP spec: 21, BraveNinja BraveNinja 5 5 gold badges 12 12 silver badges 19 19 bronze badges. Add a comment. Active Oldest Votes. Improve this answer. Yeah, RPMs is common operating speed, and idle speeds can be much lower. THis guy idles at 22 RPM, which is pretty impressive considering the stroke is 2. Yes it is a real kick to be in the engine room of a big diesel ship.
And even having low RPMs they still use reduction gears some have 30 or more ratios. Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password. Post as a guest Name. Humans have become accustomed to hearing certain sounds. There are some of us who love hearing the sound of a vehicle making some beautiful humming or revving noises. Is it bad to rev your motorcycle engine? For the most part, it is not bad for a motorcycle engine to be revved whether it be in neutral or in gear.
However, a single high rev should not last more than a few seconds because that can cause damage to the cylinder walls and pistons as they overheat. Having owned several motorcycles myself, revving the engine has become tradition during the appropriate times.
Most people in the world have revved an engine or at least heard one at some point in their life. When more air is sucked in that means more fuel is also sucked in. So really a throttle is more of an air pedal rather than a gas pedal.
With the increase of more air and fuel being sucked in to the engine, combustion within the engine happens a lot quicker and in turn that pushes the pistons up and down faster and spins the crankshaft faster. For some motorcycles, revving sounds a lot louder because the owner made some modifications to the exhaust. Motorcycles were made to rev and they were made to rev a lot higher than car engines. However, revving an engine for a long period of time can eventually cause damage.
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