Asked in Needs a Topic
Needs a Topic
What is the proper oil to fuel ratio using synthetic oil for rotax engines?
Asked in Oil and Oil Filters
What is the fram cross reference number for a rotax oil filter 256621?
Asked in Airplanes and Aircraft
Fuel Consumption of a Continental 0-200?
Asked in Starters and Ignition Systems
Where can you find specifications for Denso Ignition Coil 129000?
Asked in Motorcycle and ATV Maintenance
What is the fram cross reference number be for a rotax oil filter 256620?
Asked in Antifreeze and Engine Coolant
How much coolant in a rotax 582?
The Rotax 582 two stroke engine, both blue and grey heads, require approximately 4.5 liters of coolant solution made up of 50% non silicate anti-freeze coolant, and 50% distilled water. This is at least what the manufacturers advise. However there is some contention about with most agreeing with whatever the manufacturer Rotax stipulates, but there are also many insisting on more like 75% water and 25% coolant. My personal opinion is to stick with the manufacturers advice if the engine is in good health and running at recommended temperatures, but if the engine has over heating issues due to aging/wear and tear, then more water is always cooler and also plays the role as a thinning agent allowing a more thorough and faster flow around the engine.
Asked in Physics
What needle do you use in a rotax max?
Usually, within a standard Dellorto carburettor (With a 12.5 or 8.5 Venturi) , for a FR125 Rotax Max engine, a K98 or K27 needle will be used. The needles can be determined from each other due to the amount of tapering on it. A K98 has very little tapering, which creates a leaner fuel/air mixture, which improves acceleration, however using a K98 needle has a negative effect on the higher rev range (around 12,000+ rpm), as often not enough fuel reaches the cylinder, and you get a "coughing" or "popping" effect. On the other hand, using a K27 means that the needle has a much higher taper to it, causing more fuel to pass, which creates a richer fuel/air ratio, reducing acceleration, but improving high rev performance. Therefore we can conclude that the K27 needle is preferable at higher speed tracks, whilst lower speed tracks will be best suited by a K98 needle.
Asked in Definitions
What is the meaning of 125cc?
Asked in Calorie Count
How many calorie will be burnt racing a rotax max go kart for 1 hour?
Rotax karts pull up to 3G's in cornering, which requires lots of core and kneck strength. Not to mention the track changes in terms of the vibrations, elevation change, and the weather. I've been karting before where it's 140-150F on track with considerable elevation change, wearing a full racing suit covered head to toe. I'm going to assume an hour of strait racing should burn atleast a good 500-600 calories without including other elements. If you're always on the knifes edge, pushing it to the limit, with heat and everything in play, that should add a considerable amount. Especially if you're racing. Racing is VERY demanding, people think you're sitting in a little car going around in circles, when they don't realize shifter Rotax karts go 0-60 in ~3 seconds, and have 3x the cornering abilities of a Ferrari Enzo or a Buggati Veyron. All the while focusing on your racing line, breaking points, the tires, the heat, the muscle pains, the other drivers on the road, it's an immense task especially if you plan to win. This is why endurance karting is awesome. The most calm, collected, and FIT drivers do the best. "You can drive a Gran Prix car wheather you're fit or unfit, but for how long you can drive, how precise, how consistant you can drive under stress, under high temperature, and difficult conditions durring a race is another thing. You know it is going to be tough. You are going to feel tired, and feel some pain, you are going to loose alot of liquids but you know you can do it as good as anybody if not better if you are well trained, well fit. So if you are not fit, you concentration just tends to go gradually away durring a race." - Ayrton Senna And same goes with modern day rotax karts.
Asked in IQ
Does the Polaris IQ Shift have reverse?
The Polaris Liberty 550 twin makes the cut into 2010 not because it's the cleanest, but survives due to corporate fleet emissions. Polaris is not the only maker to offer a fleet of fan-cooled sleds for 2010. The Rotax fan-cooled engine powers a similar fleet of low-buck Ski-Doo models as well. We were quite surprised to see such an influx of these sleds for the current model year.
Asked in Small Engines
How many horsepower in 370 cc?
There is no set amount of horse powers per cc, it depends entirely on how efficient the engine design is, the type of fuel and other factors, this is easily demonstrated by a 4 stroke lawnmower engine, of 160cc (I used a honda gx160 for this example), which produces 5.5 hp and a 2 stroke 125cc (FR125 Rotax Max in this example) engine which produces 22hp. As I said, its all in the design. Sorry I couldn't answer your question. Hope this helps. Matt
Asked in Racing, Kart Racing
How can i get invovled in shifter kart racing?
First, I highly recommend you contact your local Kart dealer. They can advise you what types of karting classes are run in your area. Shifters are more popular in some areas and non existant in others. Be prepared to do some traveling as not all series run at one track. Decide if your going to buy brand new or find a used package. Becareful when purchasing used race equipment. Good money spent is to have chassis checked for straightness either by lazer or at minimum with a tape measure. I can't stress enough, that having a good relationship with a dealer will most likely save you money. It is necessary to buy a membership whether it be from the local track or series sanctioning body. Maybe both. Read the rule book and always keep it with you when racing. Depending on your age and sometimes weight will decide what class you can run according to local and national rules. Typically 15 yrs and older run 125cc or 80/85cc engine sizes. 14 and younger generally run 80/85cc, but some areas they have spec pipe and smaller bore carburetors, thick base plates to lower cylinder compression all to reduce horsepower on the 125cc engine. Again your local dealer should be a big help. Honda CR125 two stroke engine is most popular and a reliable engine package, with parts being fairly inexpensive and available at your local Honda motorcycle dealer. These engines are in kit form because Karting applications use the 6 speed transmissions which Honda stopped using in their MX bikes back in 98' or 99'. I think the cylinder of choice is 1999 or 2000, not exactly sure. There are other tricks and mods needed to be done in order to use in karting application. Another shifter class "ICC", uses kart specific 125cc two stroke engines designed just for kart use. Engines made in Italy, Austria and Czech Republic are just some of the countries producing ICC engines. Parts and engines themselves tend to be a little more expensive but include additional parts like an exhaust pipe and muffler. The Euro to Dollar exchange does not help matters. Transporting your equipment to and from the track can be as simple as a truck or van to the more elaborate trailer. A kart stand with nuematic tires will get you from the pits to the grid in the worst gravel laden path without bouncing your kart off. Now you just need a team name and the required safety apparel should be it. Oh... your going to want a racing buddy. You will call him your crew chief, you will buy him lunch and cover his pitpass. Leave your bad temper at home because crew chief pay at the local karting level is not enough having to listen to a whinny driver. Karting is one of the best family sports out there I have seen. The entire family will enjoy. Warning!!! Racing can be highly addictive. Worse than some drugs. Please race responsibly. If your plans are to get started on a career path to race professionally, you are smart starting with karting. Just look into the background of most any automobile racer and I promise you will see some type of past karting experience . You may want to run a couple of seasons in some of the spec karting programs that are very popular today. Rotax Max Challenge is one I recommend. But I will let you decide on your own. In conclusion, there is nothing to match to pure performance of a shifter kart for the money. Period. Additional information : http://www.ekartingnews.com Popular website for Karting http://www.nkn.com Popular website for Karting www.bondurantsuperkarts.com Driving school for Karting http://www.kartcrg.com One of the Worlds best Italian chassis manufacture http://rmaxchallenge.com/ Rotax Max Challenge World wide racing format (US site) http://www.maxchallenge-rotax.com RMC Official Website www.sscracing.com CRG USA Importer, Rotax FR125 USA Importer http://stores.eBay.com/Cycle-Barn-Outlet-Center Karting items on eBay
How do you winterize Bombardier Rotax?
At the very least, add fuel stabilizer to the gas tank. If you live in an area subject to freezing, drain all the water lines. For extra protection, pinch off the water injection hose, and the CSI hose, then add a mixture of half distilled water, half anti-freeze. It should hold about 2 liters. In addition, you should lubricate the PTO flywheel, drain, clean and refill the jet pump, lubricate the throttle, reverse, and trim cables. Have a wife or girlfriend wash and wax it. (bikini is optional).
Asked in Yamaha Motorcycles, Motorcycle Racing
How much horsepower does a 2007 Yamaha YFZ450 have?
Arctic Cat (suzuki engines, except the kawi-powered V2, and arctic cat's own H1): 500: (2003 and up have slightly detuned Vinson engine): 32hp @7000rpm, 34 lb-ft torque at 3500rpm (pre-03 had 28/30.5) 300: 14hp 650 V2: (close to prarie 650) 454 Bearcat: 28hp Bombardier (Rotax engines): Outty 800: 62hp @ ? rpm, 52tq @ 5500rpm Quest 650: 42hp Outty 400: 28hp DS 650: 49hp Honda: Rincon 650: 39hp Foreman 450: 24hp TRX 300: 16hp Rancher 350: 19hp 400EX: 27hp 300EX: 21hp TRX450R: 42hp (questionable) Kawaski: BF750: 51hp Prarie 700: 46hp Prarie 650: 42hp V-Force 700: 51hp Polaris: SP700: 45hp SP500: 32hp SP500 HO: 37hp (same as scrambler 500) SP800: 55hp/50tq 400 (2-stroke): 35hp SP335: 22hp 425 Magnum: 27hp Suzuki: KQ700: 49hp KQ300: 14hp LT500: 53hp Eiger 400: 24hp Vinson 500: 34hp Yamaha: Grizz 660: 42hp/35tq Warrior/Wolverine 350: 19hp/19tq Raptor 660: 43hp Kodiak 400: 21hp Big Bear 350: 18hp Grizzly 600: 37hp Banshee 350: 39hp YZF 450: 39hp ---- since its a YFZ its a four stroke, for every 24.8 cc's on an engine theres one horsepower... divide 450 by 24.8 and you get around 24.867 horspower
Asked in Cars & Vehicles, Airplanes and Aircraft
What is the fuel used in common airplanes?
The most common airplane fuel is kerosene ("paraffin" in the United Kingdom), but depending on the aircraft, they may use any of the following: Avgas (aviation gasoline) Mogas (automotive gasoline -- Called "Petrol" in the UK) Aviation biofuel Jet fuel (kerosene, Jet A, Jet A1, Jet B, JP-1, JP-4, JP-5, JP-6, JP-7, JP-8, etc.) JPTS (Jet Propellant Thermally Stable) Swift fuel (replacement for 100LL avgas) Hydrogen or various liquid hydrocarbons with liquid oxyen (rocket fuel) Gas Turbine powered aircraft -- including jets, turboprops, and many helicopters -- use jet fuel. It is a heavy fuel oil like Kerosene (Called "Paraffin" in the UK). Jet A is primarily used in the United States and at a few airports in Canada, while Jet A-1 is the standard specification fuel used in the rest of the world. Jet A is the heavy grade and the more common Jet A-1 is a heavy grade with antifreeze and antistatic additives. Jet B is a wide-cut grade -- 30% Kerosene mixed with 70% Gasoline -- and is used mostly in helicopters. Although Gas Turbine engines can burn virtually anything, including Gasoline. Jet B is rarely used, except in very cold climates, as its use in warmer climates can produce jet exhaust gas temperatures high enough to overheat the turbine blades, causing them to fail. Reciprocating aircraft engines (Piston engines) use Avgas, a type of Gasoline (Gasoline is called "Petrol" in the UK). It is available in a variety of grades but the most commonly used grade of Avgas that is available readily worldwide is 100LL grade (which is dyed blue). Other grades can be harder to obtain, for instance: 80/87 (which is dyed red) was used for low compression aero engines but it was phased out in the late 20th century. The production of 82UL grade (which used to be dyed purple) was ceased in 2008. 85UL grade is commonly available for use with Micro-Light engines. 91/96 grade (which is dyed brown) is primarily for military use. Like most other grades of Avgas it contains a percentage of poisonous Tetra-Ethel Lead (TEL). However in 1991 the Hjelmco Oil Company in Sweden introduced an unleaded Avgas meeting 91/96UL grade (and which also meets the leaded 91/98 grade standard: ASTM D910). It contains no dye, so it is effectively transparent. In November 2010, the European Aviation Safety Agency (EASA) based on about 20 years of trouble-free operations with unleaded Avgas 91/96UL produced by Hjelmco Oil cleared this fuel for all aircraft where the aircraft engine manufacturer has approved this fuel. Engine manufacturers Teledyne Continental Motors, Textron Lycoming, Rotax, and radial engine manufacturer Kalisz have cleared the Hjelmco Avgas 91/96UL, which in practice means that the fuel can be used in more than 90% of the piston aircraft fleet worldwide. 100/130 grade (which is dyed green) has been mostly replaced worldwide with 100LL grade. As of August 2013, 100/130 grade Avgas is only available in Australia, New Zealand, Chile, and the states of Hawaii and Utah in the USA...Everywhere else uses 100LL. 115/145 grade (which is dyed purple) was originally used as the primary fuel for the largest, boost-supercharged radial engines needing this fuel's excellent anti-detonation properties. Limited batches are produced for special events such as unlimited air races. Mogas (Ethanol-free automotive fuel) can also be used on ultralight and home-built aircraft. It can also be used in certified aircraft with approved modifications to the engine and fuel system. Diesel engines have been making a comeback since the 1990s. For example, the Diamond DA-42 is a light twin engine aircraft that can be ordered with Diesel engines designed to run mostly on Jet A1 or Jet B, since those fuels are more readily available at airports worldwide. Methyl alcohol (methanol) mixed with water is used for boosting power of some turbine engines. It has also been employed in aircraft reciprocating engines, such as the methanol/water injection systems used during World War ll in the German Messerschmitt Bf 109 and American P47 Thunderbolt fighters. The system could increase engine output by as much as 500 horsepower for up to 10 minutes.
Asked in Sports
Is a ski-doo snowmobile better than a articat snowmobile?
I have both a 1996 arctic cat 580 pantera efi (electronic fuel ingection) and a 1996 ski-doo 580 grand touring. I have been able to test both these models a the arctic cat will top out at 80MPH and I have gotten my ski-doo to 96 MPH on a lake in about 1000 feet but I ran out of room. If you go to ski-doo.com then click on rotax challenge it will show you a video of newmorous snowmobile brands so it is a easy desicion for me because of yaers riding a ski-doo and a arctic cat but personaly I like the ski-doo more than the arcic cat. but the new Z1 turbo can beat ski-doo any day if your looking for speed
Asked in Snowmobile Racing, Snowmobiling
Ski doo rotax 500 won't start. Was out riding and it bogged down. Haven't been able to start it ever since. It has gas and spark. The compression is good. Help?
If it has variable exhaust ( the round dome type things on the front of the engine ), those could be extremely dirty and are unable to move. If this is it, buy the new gaskets for it, take them out, and clean them up. When you say compression is good, it must be at least 100psi in each cylinder ( 125psi per cylinder means perfect compression for that sled ). In most cases, under 100 psi in the cylinders means time for a rebuild, and if one of the cylinders is significantly lower than the other side ( even if your compression numbers are still high ), it's time to take the motor apart and take a look.
Asked in Physics
What needle do you use in a rotax max kart?
Assuming you have a standard Dellorto carburettor (8.5 or 12.5 Venturi) a K27 or K98 needle is used, and the difference between these is the taper at the end. Due to the K27 being smaller at the bottom, due to it tapering more, it allows more fuel through, therefore leaving you with a richer fuel/air mixture, however this does affect acceleration, whilst improving higher engine rev performance. The K98 is the opposite, it tapers very little, therefore making the fuel/air mixture leaner, increasing acceleration, this does affect top end speed though, and could potentially be a cause of "coughing" or "popping" at high revs, in which the engine looses power. Therefore, for higher speed tracks, a K27 needle is adviseable, whilst a K98 needle is preferable on tighter tracks.
Asked in History of the United States
What weighs over 100 pounds?
THINGS THAT ARE 100 POUNDS First of all, a Burpee Big Maxx pumpkin with a 70" diameter weighs in at 100 pounds. That includes the entire gunk inside that you have to scrape out to make a jack-o-lantern. Next, for all you aviation fans out there, a Rotax 503 2 cylinder, 2 stroke, fan-cooled airplane engine weighs in at 100 pounds. But it can still fly... A large male deer can easily weigh 100 pounds. A hellfire missile (or HAL-3) weighs 100 pounds and can blow up a tank. A Barrett M-99 benchrest rifle also weighs 100 pounds (I don't know how I found this out, but here it is anyway) A Hawkbill Sea Turtle can weigh up to 300 pounds, but most only weigh around 100-135 pounds. These turtles are about 2-1/2 feet long. Finally, here is a photo of a propane tank. This is a 48 pound tank, but most of our gas grill tanks are 30 pounds. TWO of these tanks, full of propane weigh 100 pounds.