neversaydie Posted May 22, 2014 Posted May 22, 2014 Been noticing a slight hesitinacy on throttle response when winding on full, and from take off from standstill, on the YX600, since the intermittent electrical problem was cured some weeks ago. As part of the fault finding process for the electrical problem, I had the carbs off. Rather than have them off again, I thought id best check first that the carbs are balanced properly, as that may save further investigative work, and expense. Had a quick check of feedback for the Carbtune balancer, seemed positive, and reasonably priced, so purchased one, the 4 cylinder version. Instructions read through, easy enough to understand, all parts and attachments included to do the job, so in we go. Took the bike out for a 5 mile run to get the engine warmed up. Tank clamp screw removed and raised the rear of the tank up 3-4 inches, packed up with a piece of wood. 4 rubber caps removed from the engine inlet rubbers 4 rubber tubes plugged on as per instructions, gauge hung over the bars Bike fired up, tickeover speed checked ok 3 out the 4 cylinders all reading the same, no1 cylinder some way out Adjusted the screw for no1 cylinder to same as other 3, snapped the throttle half a dozen times, looking good, all 4 cylinders reading the same now Dis connected the Carbtune, tank etc back on Took bike out for 20 mile run, absolutely no hestitancy now, anywhere through the rev range Total time taken for the work - 1 hour Overwiew: Informative website, easy to purchase, quick delivery, easy to follow instructions, simple to use, results are obvious to read, response to any carb adjustments require throttle opening/closing to allow to settle but are easy to see on the clear gauges. Immediate improvement in bike performance, and once youve bought it, you always got it, and can be used on modern fuel injected motors too to balance throttle bodies http://www.carbtune.co.uk/Images/SSL11411LC.jpg
Moderator drewpy Posted May 22, 2014 Moderator Posted May 22, 2014 I got a set of vacuum dial gauges from a show years ago (£20) always use them (and so do my friends)
Moderator Cynic Posted May 23, 2014 Moderator Posted May 23, 2014 Used to have to do that regular on my old 600, you only need a 2cyl set for them. If you do it regular you will feel when they are out. As well as other bikes feeling horrid.
slice Posted May 23, 2014 Posted May 23, 2014 Like Drewpy I have the vacuum gauges rather than the thing you have, must say that yours is supposed to be the better of the dials/gauges out there.
neversaydie Posted May 23, 2014 Author Posted May 23, 2014 Like Drewpy I have the vacuum gauges rather than the thing you have, must say that yours is supposed to be the better of the dials/gauges out there. the glass tubes and the sliders are also available as spares, should any break
jimmy Posted May 23, 2014 Posted May 23, 2014 I used one on my Speedtwin (single carb model) but it never made much of a difference
Moderator drewpy Posted May 23, 2014 Moderator Posted May 23, 2014 I used one on my Speedtwin (single carb model) but it never made much of a difference you could balance it on a weighing scale with, say, an orange or packet of dried peas?
Preload Posted May 24, 2014 Posted May 24, 2014 I used one on my Speedtwin (single carb model) but it never made much of a difference At lest you can calibrate your gauges off it.
slice Posted May 24, 2014 Posted May 24, 2014 No have to be a MELON Drewpy, those old Brit bike bit's are heavy !!!! 2
Preload Posted May 24, 2014 Posted May 24, 2014 I have the early Morgan mercury gauges which were good, I also have 4 bank of Davida dial gauges I dont use either of these as over 30 years old now. I have used a Twinmax electronic carb & injection syncing unit for 10+ years as its far more accurate, you have to calibrate it everytime so you know its going to be working correctly. I cant recommend it enough. I'm even trying to use it on my RD's which isnt easy.
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