I have done a few searches today to try and find some info on what this does and what effects removing it will do?

I bought the plugs because they were cheap and part of an order for required parts. I put them in last night cause I was bored and am now wondering if there is any use.

Cheers

Andy

Bandit7

Those are the "boost bottles".

My understanding is leave them on for the street, take them off for racing - Something about making the carbs think the intake is longer, for better low end.

They're resonant chambers which do indeed help to boost the low to mid range power.
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MC21SP Plaything
BMW F800GS Bumblebee
Triumph 9551 Daytona Big boys toy
FJ1100 Sporting relic
GTS1000 oddball

do we do away with these when using blocked pj's and o/s mains?
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My understanding of these is....

When the throttle is shut off, the fuel/air mixture that has suddenly been blocked by the reeds is bypassed into the boost bottles. Then when the throttle opens again that premixed fuel/air if drawn into the cases before any new fuel/air mix from the carby..



Yes-no ???
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Paranoia about failure will ensure nothing but failure to ever reach potential.



MC18 Race bike project..
MC21 Race bike..

Interesting...

I bought a "boost bottle" for my pocket bike and the only difference I have noticed is that the bike looks different. There was no change in performance at all.

I guess I will wait until my nsr is back on the road and just see if I notice any change.

Cheers all.

Andy

Bandit7

For the MC21, are they located after the reeds? On a MC28 they are part of the airbox.

on a 21, they're after the carbs, but before the reeds.
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MC21SP Plaything
BMW F800GS Bumblebee
Triumph 9551 Daytona Big boys toy
FJ1100 Sporting relic
GTS1000 oddball