Slide Bing float level

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Quzzy
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Slide Bing float level

Postby Quzzy » Mon Mar 12, 2018 10:41 am

R60/5
New needle valve last year.

RH carb started overflowing the other day so removed cleaned , blown through and reinstalled. No change.
Started playing with float level but when I reach a point that it doesnt leak, the bike stops running on that cylinder.
When bowl is removed at the point where it begins leaking 18mm from bowl base and 38mm from bottom drain plug.

Any ideas chaps?

Snowbum suggests that floats are likely to need renewal after 47 years so have some on order anyway.
Plus a group of us here in rural France have ordered a 22l ultrasonic cleaner which is due to be delivered today....
1971 R60/5 ex Gendarmerie
2002 1150RT ex Gendarmerie

Pattern emerging?

varley55
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Re: Slide Bing float level

Postby varley55 » Mon Mar 12, 2018 11:03 am

Whereabouts in rural France? I live in the Loire Valley and have a 1979 R100 RT

Quzzy
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Re: Slide Bing float level

Postby Quzzy » Mon Mar 12, 2018 11:32 am

Hi SW 100 kms west of Bordeaux...near Soulac
1971 R60/5 ex Gendarmerie
2002 1150RT ex Gendarmerie

Pattern emerging?

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Jaythro
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Re: Slide Bing float level

Postby Jaythro » Mon Mar 12, 2018 12:14 pm

Do the float bowls on those drop off like the CV bings?

If so drop it off and flick the float so that you open and close the flow

Have a clear "vessel" below to collect the stuff coming out

I have had this a few times over the years with the Later CV bings and it was a small dab of dirt jammed in the rubber Just enough with 10 or 20 litre of gravity pushing down on it to drip and leak

Set your float levels as per the book There is no where else they should be adjusted to
"Put your Ass on a motorcycle and ride with an attitude and the "Grim Reaper" will ride in your shadow!"

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barryh
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Re: Slide Bing float level

Postby barryh » Mon Mar 12, 2018 12:40 pm

If the floats are heavy then measuring the fuel level in a removed bowl or setting them parallel ceases to be an accurate method due to Archimedes principle. You can compensate by changing the level or you could do this which is the only true way of knowing what the operational fuel level is. Same principle will apply to slide carbs.
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Quzzy
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Re: Slide Bing float level

Postby Quzzy » Mon Mar 12, 2018 12:52 pm

Yes J they do come off in the same manner...and I must have flicked them 100 times yesterday and adjusted 20 times and cannot find a sweet spot between leaking and not feeding the intake. Plut I took them apart and inspected and cleaned and blew through....
Barry, sadly the slide carbs do not have that nipple
1971 R60/5 ex Gendarmerie
2002 1150RT ex Gendarmerie

Pattern emerging?

Quzzy
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Re: Slide Bing float level

Postby Quzzy » Mon Mar 12, 2018 12:55 pm

Ultrasonic cleaner just arrived so off to make some improvised solution
1971 R60/5 ex Gendarmerie
2002 1150RT ex Gendarmerie

Pattern emerging?

barryh
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Re: Slide Bing float level

Postby barryh » Mon Mar 12, 2018 1:19 pm

Barry, sadly the slide carbs do not have that nipple

Neither do the CV's. I had to make them, then drill and tap the bowl. They are just M3 brass stand offs turned down to fit a tube and drilled 1 mm through the centre.
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Quzzy
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Re: Slide Bing float level

Postby Quzzy » Mon Mar 12, 2018 1:49 pm

Nice, do you leave them in situ with a screw blocking them or remove and replace with screw?
....nice work either way
1971 R60/5 ex Gendarmerie
2002 1150RT ex Gendarmerie

Pattern emerging?

barryh
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Re: Slide Bing float level

Postby barryh » Mon Mar 12, 2018 2:02 pm

Replace with an M3 screw and fibre washer.

I had a bee in my bonnet about how we balance everything on an airhead but don't know for sure if the real fuel levels are the same. I put off doing this for many years out of concern for modifying original bowls and of course the potential for a leak but there have been no problems at all. I still carry around spare screws in my bike jacket just in case.

Some other makes of carbs have a drain fitting in the bottom of the bowl so I thought why not Bings.

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CharlieVictor
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Re: Slide Bing float level

Postby CharlieVictor » Mon Mar 12, 2018 2:32 pm

Hi SW 100 kms west of Bordeaux...near Soulac
British Dominion known as "Dordogne". :wav:
1978 BMW R100S "Naked"
1999 W65L "Twin with a kick"

Quzzy
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Re: Slide Bing float level

Postby Quzzy » Mon Mar 12, 2018 2:36 pm

Actually Dordognshire, but Im the South side of the Gironde...very few Brits here ;o)
1971 R60/5 ex Gendarmerie
2002 1150RT ex Gendarmerie

Pattern emerging?

Quzzy
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Re: Slide Bing float level

Postby Quzzy » Mon Mar 12, 2018 7:02 pm

Well the new fangled sonic dooda seems to work wellb and all is clean and reassembled, and no leaks at the moment and running on both. I noticed that when the floats were, well floating they were not evenly submerged....being that they are all but symmetrical I assume that one side has lost some buoyancy....
1971 R60/5 ex Gendarmerie
2002 1150RT ex Gendarmerie

Pattern emerging?

Quzzy
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Re: Slide Bing float level

Postby Quzzy » Sat Mar 17, 2018 9:24 am

An update.
New floats arrived and I tested their buoyancy.
They float evenly unlike the old ones and about 10% higher above the waterline.
So they should make a difference
1971 R60/5 ex Gendarmerie
2002 1150RT ex Gendarmerie

Pattern emerging?


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