KX Riders

Maintenance & Technical => KX500 Original => Topic started by: kiwikx500 on April 30, 2006, 09:47:35 PM

Title: How would you get the most LOW down POWER!
Post by: kiwikx500 on April 30, 2006, 09:47:35 PM

Out of your KX500, even if it was at the exspense of mid to high ?  8-)

Title: Re: How would you get the most LOW down POWER!
Post by: hughes on May 01, 2006, 12:54:36 AM

There are alot of tricks but gearing made a big change in my bike. I went to 14/49(I ride in the woods) and I don't need to clutch it to get it going. Reed spacer, good set of dual stage reeds, A pipe designed for that power output Pro Circuit Platuimn 2, Jetting, there is trick for the power valves to keep them from over closing. I did this and it seems to work. Do a seach here and you should fine it. Some other members will have some info for you.

Title: Re: How would you get the most LOW down POWER!
Post by: gowen on May 01, 2006, 01:01:12 AM

You can cut your silencer back a few inches and it will ruin the top-end. :'( Also, a flywheel weight seems to bring the power down.

Title: Re: How would you get the most LOW down POWER!
Post by: 2001KX5 on May 01, 2006, 01:16:37 PM

I'm running 14/51 gearing and man you can just lug it around like crazy in any gear. I haven't had an extended ride as of yet due to some stupid issues but I may have to go to a 49 tooth rear sprocket to get some more top end speed out.

My next mod will be a set of boyseen dual stage reeds and maybe a pipe, maybe not

Title: Re: How would you get the most LOW down POWER!
Post by: Spider on May 01, 2006, 03:19:42 PM

Like Alan says, a reed spacer is the best bang for the buck.

Dale

Title: Re: How would you get the most LOW down POWER!
Post by: kix500 on May 02, 2006, 06:31:22 AM

dose it really hurt your top end that bad to cut a few inches off from the sinlencer. if so then how come?

Title: Re: How would you get the most LOW down POWER!
Post by: gowen on May 02, 2006, 06:50:46 AM

I've never done it, but my friends used to chop at their 125's to gain some low-end grunt to be competitive  in the 4 stroke world. It works fine, but you lose alot of top-end. I'm sure somebody here can explain what and/or how it does this.

Title: Re: How would you get the most LOW down POWER!
Post by: KXcam22 on May 02, 2006, 07:04:05 AM

For super low end, I would suggest that the flywheel weight is #1 mod. It's not more power but slows and controls the delivery so you can use more power.  Cam.

Title: Re: How would you get the most LOW down POWER!
Post by: Brett on May 14, 2006, 11:15:51 PM

drop your barrel to reduce exhaust and trancsfer timing and wack on thicker head gasket to stop piston hittin head.  This will give more low end power

Title: Re: How would you get the most LOW down POWER!
Post by: doordie on May 17, 2006, 04:00:37 AM

Put a thick spacer inside barrel exhaust before pipe,makes more headerlength and transform topend-power to more low "grunch".If you can weld,add a spacer on pipe and then reweld stock-inlet.
You can even make a new spacer like pic.
This toghter with Brett?s tips and a reedspacer will make it to trailbike for sure. :wink:

Title: Re: How would you get the most LOW down POWER!
Post by: Arigato on May 17, 2006, 09:01:32 AM

Raise the compression, gear it down.  The aforementioned reed spacers work well too.

From what I understand, and I could be wrong, the reason the shortened silencer helps bottom end is by increasing the back pressure.  At higher rpm's the extra back pressure increases turbulence and hinders flow.

Or not. :evil:

Title: Re: How would you get the most LOW down POWER!
Post by: mun on May 19, 2006, 07:33:45 AM

Quote from: doordie on May 17, 2006, 04:00:37 AM

Put a thick spacer inside barrel exhaust before pipe....
You can even make a new spacer like pic.
...

Make either, but make inside diameter smaller than stock. It cheap to try different diameter, but start although 2-3mm smaller.

Honda use on 500cc works bikes exhaust flange with different inside diameter depend of track.

I have my own experience of that too. I ride sometime earlier DirtTrack (1km=0,62mile track) with my then bike (Honda CR480). It has bigger hole in exhaust pipe than exhaust duct in cylinder. Of course  :x :oops: I make to exhaust duct same diameter as pipe has. Everything else work fine, but starting out gone very very difficult. I put 2mm? thick washer with original exhaust duct inside diameter between pipe and cylinder and starting out work again fine! I was very happy then.  :lol: