XR650R vs CR500
Posted March 26, 2003 - 02:21 PM
Posted March 26, 2003 - 04:51 PM
Both bikes are really fast! We have raced many times. In a straight-line drag, I win. We're pretty even until I get into 4th and 5th gear. The problem is, I end up going about 80 mph to beat him. I think his bike handles better in the turns. The CR500 also has instant power. It comes on hard and fast. They are both a blast to ride!
Posted March 26, 2003 - 06:29 PM
cr500 is much lighter and has more hp
Posted March 26, 2003 - 06:40 PM
Posted March 26, 2003 - 07:03 PM
If you drag race both bikes on pavement, all other things being equal, the CR500 will easily outpull the XR up to about 75mph. At this point, the XR650 will eventually catch up, and overtake the CR, and continue to it's top speed of about 100mph. The CR will sign off around 90 or so, and believe me, a CR500 is NOT nice at high speeds like that, it vibrates and buzzes you to death, and in general, 2-strokes don't enjoy sustained high speed revving like that.
CR500 was made for MX, which means in your face hard core acceleration and brutal power hit. The XR650 is best for wide open spaces at sustained high speeds over 60, it simply handles superb over rough ground at high speed, and the CR does not. The CR is MUCH better at low speed handling over rough ground, but still not as good handling as a CR250, in fact not even close.
Still, my favorite bike for a cheap thrill is my CR500, the power hit is just totally bad ass, and the bike is easy to handle for anyone because it's so light. MY XR is mainly for dual sport, mountain off roading in the rockies, desert riding, and things like that. It's still fast enough to scare the crap out of a beginner rider though!
Posted March 27, 2003 - 12:59 PM
Posted March 27, 2003 - 06:10 PM
Posted March 27, 2003 - 07:29 PM
If I could only get 1 bike and the choices were the 650 or 500 then I would go w/ a 500 for sanddune ridin and plain hot roddin around. Nothing beats a 500 hard hitting power but unless your in an area that can use the power it is overkill. I would go w/ a 650 for power to the ground performance-not just spinning like a 500, comfort on longer rides and that big bore feel. Even though I own a 650 and love it (except when I fall and have to pick it up) I sometimes miss the 500 raw on edge horsepower.
Posted March 28, 2003 - 06:18 PM
Posted March 30, 2003 - 11:09 AM
Posted March 30, 2003 - 07:55 PM
Now if you want it all, get a CR500AF! hehe! Cr500 motor in a 97+ CR250 Frame.
I may stick a KX500 motor in the KDX250 one of these days. Very simple install on that bike from what I have heard.
Posted April 03, 2003 - 07:27 AM
Posted April 06, 2003 - 08:34 AM
Stock or modified, the CR would easilly make more power than the XR. If geared equally, it would win any race, providing the traction was there. Actually, a good running CR250 would give the 650 a good run for it's money at least at the low to mid speeds.
It is correct that the CR and XR are made for different purposes, although the CR could also make a great all around woods or play bike. It is also correct that two strokes do not handle sustained high rpm running as well, such as desert riding. However, many have won races doing just that.
The whole thing about two stroke vs. four stroke maintenance has become highly exaggerated!!! A CR500 with average care and use will run years without even a thought of top end maintenance. Piston speeds are relatively low, and in stock form this is not a highly stressed engine! At the same time, in an effort to keep up with the two strokes, the current crop of four strokes are gradually becoming more maintenance intensive due to lighter parts, higher rpms, less oil capacity, etc. when compared to the "old reliable" designs we all know so well.
I can't say which bike is better for you, much fun to be had on either one!
Posted April 07, 2003 - 09:05 AM
All bikes were modified to produce the highest speeds possible. Mild porting, cams, pipes were used and the KTM was bored to a 540. The Husaberg was the most stock of the bikes.
They did top speed runs in two directions, and averaged the speeds. The results were:
Honda 111.4 MPH
This proves the Honda XR650R IS faster than a 500 2-stroke. BOTH bikes were modified to get the most power from a mostly stock motor.
Fun. Fun. Fun.
Posted April 07, 2003 - 12:36 PM
Posted April 07, 2003 - 03:56 PM
By the way, in case you are wondering there is a 650 Honda in my garage, and no 500 two strokes within sight.
Posted April 07, 2003 - 05:43 PM
Speed is all about power to weight ratio and wind resistance.
If this is true, why is it that the 650 is faster (top speed) than the 500? There is much more to speed than power and weight. Acceleration is going to be much greater with the 500 (force = mass x acceleration so force/mass = acceleration), but top speed has more to do with the type of engine and final gearing in this case. You will have a tough time proving the 500 to be faster than the 650.
Posted April 07, 2003 - 06:45 PM
You need to compare the bikes on better terms than that. Do a 0-70 drag, do a 20-100mph drag etc and then the top speed. Then you have some data. Like one bike has the highest top speed but the slowest acceleration. Things like that give you a better feel for how a bike's "speed" is relative to others.
Posted April 07, 2003 - 06:47 PM
Quoted from March 2002 Dirt Bike:
"Twenty years ago, the Dirt Bike staff of the time got a KTM 495 on the dry lake with the tallest gearing imaginable. There was no GPS, no radar gun, not even a good pace vehicle. With just a stop watch, the top speed was guessed to be 123 MPH. It wasn't good science, but it made a good headline."
"...motorcycle technology hadn't regressed; it's just that speed measuring technology had progressed. The 1981 numbers were revealed to be doubtful."
What do you have to say about that???
Posted April 07, 2003 - 06:55 PM
Again, from the Dirt Bike article:
"The Kawasaki was already at the limit of it's gearing and the Husaberg had been stripped of everything that would come off. Finally, the Honda returned with a run to end all runs. 100.5 against the wind and 125.0 with the wind."
Sorry boys, the Honda XR650R, mostly stock, with only a port clean-up, HRC cam and a pipe, was faster than a ported and piped KX500.
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