mixture screw tool???

[benny hedges]

my home made rubber tube mixture screw adjusting tool was a waste of time
so i had another go with a screwdriver bit soldered to an old speedo cable.... works but a bit too floppy.

so question - to save me buying one... has anyone got one who's going to wales??? tony?? amcq? anyone?

like this one: http://cgi.ebay.co.uk/NEW-MOTORCYCLE-Ai ... 1917wt_814



see thing is ive got a very annoying fuelling related misfire at miniscule throttle opening.... ie maladjusted mixture screw = too lean.
need to adjust it on the bike.
let us know soon as pos chaps otherwise i'll have to buy one and funds are very low atm

i found this as well.....
http://vtr-tool.atspace.com/ might have another go after with some copper tube and the speedo cable.
as you can probably tell this is annoying the sh1t outer me!

[alec]

Would this sort of thing work Benny ?
http://cgi.ebay.co.uk/DRAPER-ANGLE-90-S ... _Equipment

[benny hedges]

Would this sort of thing work Benny ?
http://cgi.ebay.co.uk/DRAPER-ANGLE-90-S ... _Equipment

no m8 thats like a crank handle screwdriver... you have to reach under the carbs while the engine is running & hot, latch onto the head of the mixture screw and turn the end to adjust it.. like a flexible 90 degree screwdriver.

thing is, when i want something i want it NOW.
so i made one.
then i made another smaller one.

used a speedo cable cut in half, inside some 10mm copper pipe bent to 90 degrees at the end, with a flat screwdriver blade in the end and a 4mm compression tee for the turny handle bit.
works perfect!

then i still had half the cable left and some more pipe so mark2 is a bit smaller with yellow 6mm square crimp connectors crimped onto the cable... properly!
tbh it works better than the other one but not tried it on the bike yet.

i adjusted it as near as i could get it for now and took it down the road - bloody brill - the niggly lumpy spot is gone finally... nice & smooth from idle to limiter at last!!!
you cant possibly appreciate how much this has been annoying me!

need to rebalance the carbs probably tomorrow, then fine tune it, then balance again if necessary then bobs yer gran

[alec]

so is this to balance the carbs then ? cause bazza did mine at tony's workshop day and it looked hard work with a screwdriver

[benny hedges]

no mate its to adjust the mixture screw underneath the carbs.... its a basterd to get at lol.
there is a default setting in the manual for it but as im running a bmc filter, no snorkel & size 50 pilot jets the standard setting is miles out.
the way ive got it now the front is like 1/2 turn out and the rear a bit less.

could probably use the tool to access the balance screw as well tho come to think of it... hadnt thought of that
i'll tri it tomorrow and see if it's easier than my flexy 1/4 drive bar & 8mm socket ;)

[alec]

if it works on that as well you could start selling them on ebay mate and become a millionare eh lol

[benny hedges]

well theyre a bit rough butt tbh but they work... i havent even got a vice in my garage yet & my cbx is my bench for sawing on lol
im more of a scrapyard challenge type inventor than design engineer tbh... caractacus pott style
as long as it gets the job done im happy

[alec]

well theyre a bit rough butt tbh but they work... i havent even got a vice in my garage yet & my cbx is my bench for sawing on lol
im more of a scrapyard challenge type inventor than design engineer tbh... caractacus pott style
as long as it gets the job done im happy

thats the thing mate people want things that work at affordable money not the 16 quid tools especially while cash is tight eh, i'm hoping things are looking up i got a job interview monday, its delivering car parts monday to friday so fingers crossed eh.

[benny hedges]

i fkin love them tits

[Stratman]

see thing is ive got a very annoying fuelling related misfire at miniscule throttle opening.... ie maladjusted mixture screw = too lean.
need to adjust it on the bike.

I have exactly the same problem and I was wil try to use my Draper angled screwdriver.


Glad to hear its sorted the problem though as its annoying me too - like you say, just at miniscule throttle opening.

[sirch345]

see thing is ive got a very annoying fuelling related misfire at miniscule throttle opening.... ie maladjusted mixture screw = too lean.
need to adjust it on the bike.

I have exactly the same problem and I was wil try to use my Draper angled screwdriver.


Glad to hear its sorted the problem though as its annoying me too - like you say, just at miniscule throttle opening.

Paul, please do let us if your Draper angled screwdriver is suitable for the job

Well done Benny, nothing like a result like that

Chris.

[tony.mon]

If it's a cable inner, won't it untwist in one direction?

But a lovely bodge.

Re the balancer adjuster, I have been looking for a long flexible adjuster to fit in place of the short adjust screw, preferably with a knob on the end, something like the tickover adjuster knob.

Not seen anything suitable yet, but one day....

[benny hedges]

won't it untwist in one direction?

the speedo cables are wound like a bass string only tougher... not like a clutch cable with just twisted wire,
you can twist it in any direction with quite a lot of resistance and its fine.

i'll fetch one to wales for you m8, im sure you'll make good use of it.
an improvement would be to fix a bright led on the end as well cos its fiddly to hold a torch and make the adjustment.

re the mixture screw know.... i was going to fasten some nylon tube to mine and run it up under the tank, with front & back gauges permanently fixed for on the fly balancing...
might get round to it one day

[Stratman]

Paul, please do let us if your Draper angled screwdriver is suitable for the job

In a word, no Too big to get to the rear carb anyway, so will try something else!

[sirch345]

Paul, please do let us if your Draper angled screwdriver is suitable for the job

In a word, no Too big to get to the rear carb anyway, so will try something else!

Thanks Paul for the info, well done for remembering

Chris.