canyncarvr
~SPONSOR~
- Oct 14, 1999
- 4,005
- 0
I'll keep this short. Email me if you want further particulars.
This has proven true on three different bikes, two different brands, three riders. It costs you nothing to try it.
There appear to be two 'sweet spots' for air screw adjustment on RB carbs. That's what it's been tried on..I don't know about the oem pwk.
You RB'rs....try your airscrew out further than you'd think reasonable. If you're normally set to (example) 1 1/4 for best throttle response, try something out in the 2 1/4-2 1/2 range.
This considers your jetting to be close in the first place.
You get a different power delivery altogether! Improved pull from very low revs. More throttle gives you more 'go' without 'loop-it' tendencys. Where you'd be downshifting before, more twist works..where more twist before would get you a bog with little-to-no pull.
You'll find mid-throttle response for 3rd gear to be much better, too. You can short shift to 3rd and still have plenty of pull. That's always been a problem with the kdx, cuz 3rd is kinda 'far away' from second ratio-wise.
You can still loft the front any time you want..but it's a controlled pick-up. You can change the amount of loft easily with the throttle.
The 'far out' setting is great for single track..the 'normal' setting better for more open riding (imo).
Keep in mind that the rb modified carb has a useful pilot circuit compared to the oem pwk. Little air screw changes can make a huge difference! Don't be yanking the screw around 1/4 turn at a time, or you'll miss the whole thing! ;)
Give it a shot! I'll bet you'll be surprised!!
This has proven true on three different bikes, two different brands, three riders. It costs you nothing to try it.
There appear to be two 'sweet spots' for air screw adjustment on RB carbs. That's what it's been tried on..I don't know about the oem pwk.
You RB'rs....try your airscrew out further than you'd think reasonable. If you're normally set to (example) 1 1/4 for best throttle response, try something out in the 2 1/4-2 1/2 range.
This considers your jetting to be close in the first place.
You get a different power delivery altogether! Improved pull from very low revs. More throttle gives you more 'go' without 'loop-it' tendencys. Where you'd be downshifting before, more twist works..where more twist before would get you a bog with little-to-no pull.
You'll find mid-throttle response for 3rd gear to be much better, too. You can short shift to 3rd and still have plenty of pull. That's always been a problem with the kdx, cuz 3rd is kinda 'far away' from second ratio-wise.
You can still loft the front any time you want..but it's a controlled pick-up. You can change the amount of loft easily with the throttle.
The 'far out' setting is great for single track..the 'normal' setting better for more open riding (imo).
Keep in mind that the rb modified carb has a useful pilot circuit compared to the oem pwk. Little air screw changes can make a huge difference! Don't be yanking the screw around 1/4 turn at a time, or you'll miss the whole thing! ;)
Give it a shot! I'll bet you'll be surprised!!