Maintenance & Technical > KX500 Original

Needle

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Motorrad:
  Lots of Jetting and Needle threads I know.. But just noticed somthing... Destry was running a N89D needle on his #1 plate bike...

  Very interesting as I always thought they ran the N82R needle

Anyone have any experiance with this range of needle??

greencannon:
I've never found a need to mess with the needle , but I'm also not running race gas or have modified head or cylinder. I'm assuming Destry did. I do find that clutch actuator arm interesting.....it looks like it might be adjustable. I could use one of those, no matter what I do I find my clutch cable has to be adjusted  all the way out at both adjustment points. even if the cable is brand new and not stretched.
That foot peg mount looks fabricated also, cool

Polar-Bus:
That specific application ( desert racing), and the fact that the rider was the ultimate AMA National pro level pilot, is the reason needle selection is far more critical. That engine was spending 95% of it's life at 3/4+ throttle, so the factory kawi race team probably found a more ideal needle taper. While optimum power is a consideration, so is fuel economy. I'm certainly NOT going to run out and swap to a  N89D just because the race teams use it. I am NOT that good of a "jetter" to notice a difference. I'm sure Team Green invests substantial engine dyno R&D to come up with the best overall jetting, then just does some ambient temp jet changes at the track.

BDI:
You know whats really interesting is the billet arm on the clutch. Does any one know if that is something that can be bought.

2-Stroke Tom:
The billet clutch arm extension is a Team Green piece that's not for sale. It's not adjustable either. I was going to try and design one of these until I put on a new clutch cable with the clutch cable mod (which Destry's bike has too), and an ASV pro clutch lever. Feels exactly like my kx250 now.

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