Masterphil said:...A KX100 does sound like a good choice, but will be very different (faster) from the sleds she's used to riding.
WildMax said:A KX100 will do over 100mph??? That's impressive.
TimberPig said:No, it won't be that fast, but the power to weight ratio and snappiness is a lot higher than on a sled. When you crack it on a bike, the power hits a lot harder and snappier.
FruDaddy said:And most of the world doesn't understand the difference between fast and quick, that 100 will be quick (30-35hp and 150 lbs). It geared correctly, I would estimate 55-65mph. I couldn't find an actual hp number, but the KX85 is 28.5.
The WR250 was only 15hp in 04 (same bore, stroke, and compression as 02), and at 224lbs, will probably be left behind by the KX.
source:bikez.com
Masterphil said:That, and sleds have a CVT wheras the bike has a 6spd and a manual clutch. It's not just a pin-it and pray like it is with a sled.
Two wheels, a touchy throttle, and a manual clutch just has a way with humbling even the most ego-driven jackasses, not that I'm implying that you are one.
adam728 said:Wow, is that some horrible mis-information. If you actually believe a WR250 is only 15 hp, even corked up from the factory, well...
And a KX 80 might get 28.5 hp at the crank, but not to the rear tire.
I'm not sure where people are figuring a 100 will be faster than a sled though. I spent a few years wrenching on both and doing a small amount of racing, and sleds just flat out haul.
I vote for a KX100 for her. I think she could fit a 125 or 250F, but would probably be more comfortable on the 100.
TimberPig said:In outright speed, a sled will be faster, mostly due to the ability of the CVT drive system to gear the sled higher than the bike. The actual hit and response of a bike is normally much faster and harder than most sleds, as the drivetrain doesn't cushion the reponse like abelt driven clutch does.
adam728 said:Well earlier you said that the power to weight ratio of the bike was much greater than a sled, and that's just not right. Snappier, yes, faster, heck no!
Would you call it all "horrible mis-information" or just the hp of the WR. Please note that I did provide my source. This is because, while they are usually accurate, the number did seem a little low to me. It is listed as 15.2hp@7500rpm ans 15.9ft.lbs@6000rpm.adam728 said:Wow, is that some horrible mis-information. If you actually believe a WR250 is only 15 hp, even corked up from the factory, well...
And a KX 80 might get 28.5 hp at the crank, but not to the rear tire.
I'm not sure where people are figuring a 100 will be faster than a sled though. I spent a few years wrenching on both and doing a small amount of racing, and sleds just flat out haul.
I vote for a KX100 for her. I think she could fit a 125 or 250F, but would probably be more comfortable on the 100.
That number is way low, about 1/2 what a WR would make at the rear wheel. What's really funny is that 15.9 ft-lbs @ 6000 rpm calculates to 18.2 hp. Of course, that site also says it has an automatic gearbox too. :laugh:FruDaddy said:Would you call it all "horrible mis-information" or just the hp of the WR. Please note that I did provide my source. This is because, while they are usually accurate, the number did seem a little low to me. It is listed as 15.2hp@7500rpm ans 15.9ft.lbs@6000rpm.
RWHP is affected by the final drive gearing, which can be changed within 10 minutes, so it makes no sense to use it for comparison. My son's 17hp KX65 pulls a lot harder since I dropped a tooth on the front. The motor makes the same power, but the torque multiplication in the final drive has changed the power delivered to the rear wheel. Geared correctly, you could get full engine torque to the rear wheel.
nikki said:Another "shorten my ride" tip is sliding the forks up in the triple clamp. Of course you can only go so far, before you hit the bars. And you might experience a little unstability/headshake in the front end if you lower the clamp too much, but it will give you another 1/2"
Every bit counts! Shaved seat foam, raised forks/lowered clamp, shorter bars, 4" of sag....
But if she's really 5" from touching her toes (in MX boots) to the ground on a 250F, maybe a KX100 would be a good option, at least for starting out. At 5'5"/130 lbs., I could darn near touch flat footed on my YZ250F, with stock springs.
TimberPig said:Yes, the drivetrain efficiency is lower and drivetrain losses in a sled are much higher. The manual clutch and transmission is a big part of why bikes respond much quicker. Sleds are push the throttle and go, although to truly ride a sled, does take skill, the effort to making it go is so simple a monkey could handle it.
WildMax said:Didn't Polaris use a similar CVT on ATVs whereas a lot of the others used transmissions like a bike?
We use cookies and similar technologies for the following purposes:
Do you accept cookies and these technologies?
We use cookies and similar technologies for the following purposes:
Do you accept cookies and these technologies?