Dave Ett wrote:For Gods sake don't remove the kickstart - you're gonna save a few ounces and have to bump start every time. It really isn't worth it.

It's not much weight, but it is rotating mass which counts for a little.

Dave Ett wrote:You can go to premix for safety sake, but I doubt it'll gain you any power, and suspect it hardly uses any either.

OK, won't bother with that.

Dave Ett wrote:The wire splice or HRC box

got the HRC box

Dave Ett wrote: decent exhausts,

Not sure if they're decent. They're old and rusty but I tried to clean the inside, no visible markings, could be JHA or HRC from what the bloke told me.

Dave Ett wrote:HRC kit and rejet to suit,

No jet kit fitted, but I have of course re-jetted, 165 mains I think.

Dave Ett wrote:together with a modified airbox

back is chopped off it and the separator on the inside has been removed

Dave Ett wrote:should see you in the mid sixties.

Hmmm! So why am I down at 56.5?

Dave Ett wrote:Loosing the filter is worth a few HP too - 3 on mine.

It's a dry Daytona high-flow filter.
... sounds like the airbox has to go basically

Dave Ett wrote:Have you hacked off all the un-neccessary bits? .

Some of them.

Dave Ett wrote:Rear subframe,

Nope it's still holding up the rear cowl, which I sit on.

Dave Ett wrote:junked the rear brake master cylinder, lightweight racing chain,

Yep! Light sprockets as well. Magtek wheels ... all rotating mass

Dave Ett wrote:coolant expansion tank,

Nope that's still there

Dave Ett wrote:rear footrests, silencer support brackets, speedo,

All gone, that saved a heap of weight.

Dave Ett wrote:excess wiring no longer used (lights, horn etc)?

wiring is still there, but lights, horn etc. themselves removed, and of course FRP bodywork

Dave Ett wrote:As you only weigh 60kg, I won't suggest you diet!

Thank-you for that consideration.

I've also got tyga high-flow reed stuffers, I blocked off the air bottles under the carb.s, cleaned and adjusted the power valves, top end rebuild, HRC front cylinder head conversion, removed the sidestand of course, clutch and stator covers, even have a small front brake reservoir, RS250 front forks are lighter (i.e. shorter!), lightweight clip-ons, I'm more worried about lack of power than weight at this point.

So if I remove the airbox altogether and fit my newly ported cylinders, then I should get over 60HP? Does the jet kit reallly give you more power? And at what cost to reliability and sensitivity to conditions?
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MC28 SE -sold-
MC21 with RS250 engine -for sale-
MC21 race bike -soon for sale-