KX Riders
General => In General... => Topic started by: YUNGGUNNAZ on October 08, 2005, 12:28:57 AM
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who has the baddest and fastest kx5 out there in your opinion?member, friend,yourself maybe.just for fun discussion.
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Probably Gowen. If he still is running the 520 kit. I was running the same thing before I cracked the cylinder (it was heavily ported too) and that was the fastest dirtbike I had ever ridden. It would do wheelies in 5th gear going DOWN sand dunes. Altitude, incline, it doesn't matter with the 520.
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yes he says he was fast.untouchable.with the post i've read on his machine he has good stuff.i was wondering where he races sand drag at?there's a young lady that races at local track from Wva. that's awesome.this is 400ft.
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I'm glad Ricky Charmichael doesnt have one. That guy would be fast with just two tires and a spark plug.
Wish I could ride like him. Has any manufacturor ever made a dirt bike with larger than 500 cc ?
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seems like ATK(i thing thats right) had a 700 or 770 not to long ago.could be wrong on the mfg.
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seems like ATK(i thing thats right) had a 700 or 770 not to long ago.could be wrong on the mfg.
I talked to the ATK CEO at length last year and he said that the 620 Intimidator was there best 2 Stroke! I was thinking about getting just one last monster 2 stroke before they disappear!
http://www.atkusa.com/ProductsIntimidator.aspx
Alan :D
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Mmmmmm.... Thats me! Are they not being made any more?
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Holy smokes did you see the 620 and the 700 have compression releases. Im thinking my next bike will be a 250 2-stroke or the K5. BTW how much taller is the 500 vs the 250/ or 125?
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I would just like to point out that those ATKs are pretty much Maico's and are avaliable (in very limited numbers indeed) over here.
There's a 500, a 620 and a 685 cc model the Maico (http://"http://www.motorbikes.be/en/Maico/2003/685%20Supermoto%20Special%20Edition/") engine is also sold as an engine for sidecar motocross and is badged up as a Zabel (http://"http://www.zabel-racing.de/en/motors.html") engine (in 700cc version).
ATK (Hmmmf)
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Anything much over 600cc's in a two stroke will slow it down, due to the mass of the piston. The ATK 700cc would only rev to like 3500rpms and would put it all to the ground. I remember reading an article about it saying it was pretty much a flop, due to the overall weight.
If you are going to go to those sizes, you seriously need to consider an inline twin. But then you have to deal with the mass and weight of the engine. Both ways, a 500 is VERY capable of running the same 1/8th mile as an inline four 1000cc bike with minor mods.
The biggest improvement you can do, powerwise, is correct the jetting. Then comes the huge list of extras that give minor, but add up. So, with that said, if you are not getting a small amount of surging, your jetting is off. Call me crazy, but I get all kinds of surging and I can run a faster 1/8 (1/4th mile gearing permitted) lap than my street bike ('05 R1). That's performance.
I do local drags for fun in Smithfield, NC at an ATV park with a 1/4mile dirt drag strip. Mainly drag Alky and in-line four (600-1000) quads. But every now and then will get a KX500 or CR500. Most sit back and watch though. For racing, I head up to Burkeville, Virgina and race a 1/8th mile grass strip.
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?? how does a KX500 run a faster 1/4mile than an R1?? I would have thought the power to weight ratio and traction would be in the R1's favour??? What sort of horsepower are you getting out of your 500?
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Power to weight ratio.
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?? how does a KX500 run a faster 1/4mile than an R1?? I would have thought the power to weight ratio and traction would be in the R1's favour??? What sort of horsepower are you getting out of your 500?
Both being heavily modified - DOT tires on both.
Stock R1 = 1 hp per every 2.64 pound. (410 in weight and 155hp)
Stock KX = 1 hp per every 3.49 pound. (220 in weight and 63hp)
Consider that the KX500 is a two stroke and is quick to make the power, while the in-line takes four cylinders to catch up to the HP. An advantage is that the inline has a large 1st gear and the single 2t has short quick gears.
Both bikes are running race fuel (R1 = Spirits 100MON KX500 = C12 108MON) and have the heads cut for the fuel and heavily modified in every way possible esides Alky and NOS. :twisted: and have been pushed to the maximum limit before causing a seizure (well went over the the KX :roll: ) and the KX will still beat it in the 1/8th mile by a good few bike lengths. Two stroke and four stroke horsepower are two diffrent animals.
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Power to weight ratio is certainly a beautiful thing! Specially on the Kx500. Traction on the other hand...
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Traction on the other hand...
Is usally an issue, especially when you start to spike the powercurve, but still not a loss, just need to learn the technique of (A heating up the tire (B learning to control it and use it to your advantage. (there isn't really one, but just making the best of it)
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Anyone know the HP on those things? :twisted:
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here is what k5 will do when she hooks too hard. this is in pro gas class against 1500cc kaw at slades park,surry va.
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I love this pic!
And I'd love to see more of them!
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"Traction" The good the bad and the ugly!
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oooo, that's going to hurt! Have to watch that start out jump. That isn't going to feel so hot.
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this guy says his motor was done back in japan.has rad valve,lectron air shifter down pipeand three gas lines?class is gas only but when you look at bike in pit there is never anything in bowl.has pingel petcock.been winning alot unless katie from wva. comes in with her k5.he lost this week to a (gulp)84 cr i did for a friend.i had trans problem.broken drum.buddy with cr call me to say he didn't sleep last night,no woman just a 1st place trophy to look at.lonely at the top he said.sorry about the book.
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try www.bikerenews.com dirt drags.there are some pics there.i'll try to find some good ones.
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ok, now considering bone stock bikes.... where would the KX stand? I would think that for a short distance maybe not a full 1/8th and deffinitely NOT a full 1/4 mile, but for a short distance the KX would be very close to as quick as a supersport bike like an R6 or R1 type bike. I had this argument with a friend of mine and he said there's no way my KX500 was anything close to one of those bikes. Was I wrong by saying I felt it was? I said at least through the first 3 maybe 4 gears I would be close.
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ok, now considering bone stock bikes.... where would the KX stand? I would think that for a short distance maybe not a full 1/8th and deffinitely NOT a full 1/4 mile, but for a short distance the KX would be very close to as quick as a supersport bike like an R6 or R1 type bike. I had this argument with a friend of mine and he said there's no way my KX500 was anything close to one of those bikes. Was I wrong by saying I felt it was? I said at least through the first 3 maybe 4 gears I would be close.
You are correct. A stock KX500 will keep quite well with most modern day rice rockets, more so the older ones. The only issue you would run into would be that modern day ricers have quite large first gears (50-80mph) and have no need to shift most of the race.
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Hey Guys
I've ridden big sportbikes (over 1000cc, heavily modified sometimes, even had a turbo 1997 GSXR750, made 190 hp at the rear) for over 10 years,
AND THE FIRST TIME I RODE A KX500 I WAS AMAZED AT HOW VIOLENT AND ANGRY THESE BASTARDS ARE!!!
First KX500 I ever rode, I bought. a 1997, fairly ratty (ended up doing a bunch of work to it) but still, i was shocked and amazed!!
As for KX's vs Sportbikes, I actually own both - a 97 KX500 with some mods done (pipe, piston, light porting, jetting, etc) and a 2004 GSXR1000 with some mods done (lots of ignition / fuel mapping on a dyno, PC fuel box, exhaust, magnesium wheels, gearing, etc)
one HUGE difference between these bikes - THE GEARING!!!!!
a lot of the 04, 05+ sportbikes from the japanese (04 R1, 04 ZX-10, 04 CBR1000, 05 GSXR1000, etc) have 100 mph first gears
Yeah, thats right, 100 mph in first gear..... For two reasons - 1. People have a really nasty habit of flipping these bikes over in 1 st gear, and 2. For racing, its occasionally useful to have a first gear that tall (in roadracing, a super slow, "bus stop" corner is 50 mph, min, and of then the slowest corners are 70 +
So that means that in 1st gear, the sportbike will do what the KX will in 5th
The KX first gear, with stock gearing, does what.... 35 mph??
If the KX has 2/3 the power to weight ratio, or even 1/2, but has gearing that is nearly 3 times as deep, well, thats going to make for an impressive launch!!!
Also, the KX doesn't turn many RPMs (revs out at about 8,000, max power about 7,000), vs 12 - 14K redlines for the sportbikes. The KX, being a vicious little two stroke, makes a ton of power low down in the powerband. so not only is the gearing shorter, the KX also gets into its powerband quicker
One of these days i'm going to sit down and do some spreadsheets on these, figure out the power ("tractive force"?) being put to the rear wheel
I have done some rough numbers in my head, and I think that at least up to about 35 mph or so, the KX puts more power to the ground - and i'm talking absolute power, not power to weight
I think a KX can beat a sportbike for a short distance. I dont know about running a full 1/8th mile, a lot of these crotchrockets can run over 110 in the 1/8
But for a full city block? something like that? a guy who can ride on a KX could do pretty well i think
Trust me on something, sportbike guys who don't ride dirtbikes have NO idea of the power of these things. I should know, I had no clue!! :)
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well said.i have a friend who has a busa and a 05 gsxr 1000.i have been trying to get him to try my k5 to see the difference.it would improve his riding for sure.plus scare the s---. out of him.