Re: Kasea Skyhawk 90 Questions
How fast is a bone-stock Kasea 90?
28mph (complies with the CPSC restricted guidelines)
How much power does it make and whats the stock RPM range?
3-5hp like the others and runs about 5-8000rpm
How much of a difference does the removal of the throttle limiter make in speed and engine revs?
Speed increases to about 32-35 but the main thing you notice is more power. RPM is governed by gearing, clutch and roller weight
Raptor 720 mentioned installing a Uni air filter and changing the jet size. How much of a difference does this make on performance and can you buy the main jet rather than drilling one out?
There are people who think that drilling a jet is a no no. They have no experience with these machines. Remove the restrictor sleeve and the tube leading into the stock air box and a .032" drill makes it run perfect. Add a different air filter and .034" usually works with the needle raised one position. Add a pipe and .037 is about spot on. Obviously altitude, compression and other factors matter. I have heard that some people have found jets. I simply have never had the need to purchase them.
I also checked out Trinity's web site. It appears you can really modify the heck out of one of these little quads. But is it worth going that far, or would you even want to? I'd like the bike to still be reliable and safe. I also don't want it to be too loud and piss off my neighbors and attract unwanted attention.
I have one Kasea fully modified with 2 years of hard racing. Upon inspection, you could not tell any difference from a motor that was 4 hours old. Reliable -- virtually the same as stock but you still have maintenance!!! Safe -- that depends on the maturity of your rider. Obviously we cannot control your rider. I will say that kids on modified machines have the necessary tools (power) to properly control the ATV. The stock machines are the ones kids usually wreck.
What kind of other mods are available on the Kasea? Can the brakes be better, tires, suspension (any recommendations). I want to get the bike and let my son get acquainted with it first before I modify it. Then I have no problem spending a grand on it if it's worth it. Basically, I'd like to know in what order do you recommend going?
Tires. The best prices I have found are in Dirt Wheels Mag. Look to spend about $250 - 300 for a good MX set on rims. Stock shocks are fine for the first 6mths to year of riding. Then Works or a suspension/shock package is in line (about a grand).
Start with the pipe, modified stock cylinder, reed petals, pulley, rear sprocket, air filter, rollers and tires.
Finally, If anyone has knowledge of the Raptor 80, I'd like to know the differences. How fast is a stock Raptor 80. I know my neighbors Raptor 80 is shaft driven with a 3 spd tranny. How does the Kasea shift gears? Or, does it not have gears but instead one of those centrifigul belt and pulley systems you see on go-carts? And if so, can this be modified, or does it need to be if the engine is modified? I'm not interested in a Raptor 80, but my neighbor's kid has one and I'd like to know the differences.
The Raptor 80 is a Badger in new plastic. Competition for the Raptor 80 is the LEM 50 stock. It is junk.
The Kasea uses a fully automatic transmission - belt driven. MOds include rollers and a pulley to start all the way to a completely redesigned trans for the super mods.