Maintenance & Technical > KX500 Original
Power delivery of KX verses CR
stock500:
I swore that a 500 was just too wild after riding my friends CR500. It seemed like the second you touched the throttle the ass end was fish tailing out of controll. However I got sick of riding 4-strokes in the dunes and getting left behind so I got the KX500. My bike is a 2004, and 100% stock. The power is smooth as glass as long as you don't stab it. I love my bike and get a kick out of riding it in the dunes!
CR480R:
--- Quote from: BDI on December 18, 2007, 11:45:48 AM --- As far as low end goes on my 98 cr500 ( I owned for seven years) and on my buddy Justins 88 and his 01 when you have a paddle on the bike in the sand you have to burn the clutch and push with your feet untill the bike comes up on a plane or It will die.... It could be because the cr500 is a pipey non power valve haveing back flipping piece of s**t.
--- End quote ---
Sounds to me like something may have been wrong with your bike... The '90 CR500 I had was neither pipey nor a clutch burner with a brand new 10paddle hooker... I havent had the chance to own or ride a KX500 yet, but I do know a properly tuned CR500 is far from being a POS... My only gripe was the headshake at speed, I could see one easily getting away from a smaller rider...
KXcam22:
My 87 CR500 was very pipey. It was the only open class bike I ever owned that wouldn't do long controlled wheelies on a gravel road. Either no wheelie or wheely over backwards. I had to put a steahly on just to ride it. In comparison, I put a friend on my K5 who has just started riding, normally an insane thing to do. KX is such a pussycat that he had no trouble riding it without dying. I must admit though, that my 1982 CR480 had about the best powerband going strictly for MX. Cam.
Mick:
--- Quote from: BDI on December 19, 2007, 10:36:00 AM ---Anyone that has a remote grasp on what a power valve is and how it works knows It's impossible to have good bottom end and good top end on a two stroke engine without one.
--- End quote ---
I agree. I wouldn't argue the CR doesn't come on sudden and can't scream like a banshee. Your explanation of how a KX pulls your arms is also taken right out of my mouth. I suppose I can't use my current CR for this discussion, but I'll try anyway. I have a PC exhaust and 39mm carb and it pulls smooth off the bottom and runs similar to a KX on top. It doesn't match a KX at any point but maybe the midrange...but it's "close". In sand drags I have matched my '89 KX 50/50 every time. The KX also has extensive motor work. In my experience it's the CR's ability to rev quicker that benefits it the most against a KX.
Overall I'm impressed how linear and strong my CR is for not having a power valve. And I still havn't had any motor work done yet.
I have never ridden a CR I thought was gutless or needed clutch abuse to get moving. If that's been your experience I have to beleive the Honda's you rode were clapped out.
don46:
The Honda has a shorter stroke, smaller flywheel, and smaller crank webs, all this equals lighter quicker revving. So, In my opinion the Honda will rev quicker, but doesn't have the Torque of the heavier flywheeled, longer stroke K5 and thats power valve aside. I don't think the CR has any more top end than a KX, IMO on a stock bike it gets ther quicker. I have a modified 250 ignition that I would guarantee you will rev quicker than the Honda, I've had it on twice, now I'm trying to figure out how to tame it a bit right off the bottom, it way to viscious, way more so than the PVL. I'm thinking a programable ignition that I can retard the timing a bit right off the bottom, then advance it through the mid and retard again on top for the over rev.
Honda makes a good bike, they just aren't for me. This is one of things that will never be agreed upon, Honda riders will swear by it and kawi riders will swear at it. :-D
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