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#Post#: 2110--------------------------------------------------
Carburetor: Flip Up Choke
By: patentgeek Date: August 6, 2017, 2:06 am
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Has anyone replaced their stock, cable actuated choke with one
of these?
HTML http://guzzino.com/flupchsh.html
Seems like a good way to eliminate a cable and the handlebar
choke lever, and not too expensive.
#Post#: 2120--------------------------------------------------
Re: Carburetor: Flip Up Choke
By: banquo Date: August 7, 2017, 4:01 pm
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There was some discussion about that very subject over the past
few weeks. Can't find it on here, so assume it must have been on
the Facebook group. IIRC, most thought it should work OK, if you
don't mind losing the convenience of bar operation, but someone
else thought it might not work, for reasons I can't remember.
I'll see if I can find it.
#Post#: 2121--------------------------------------------------
Re: Carburetor: Flip Up Choke
By: patentgeek Date: August 7, 2017, 6:46 pm
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I would be less inclined to switch if I lived in a colder
environment where being able to adjust the choke is more
critical. In my area the choke is generally only required for
startup and maybe a minute or so of warmup.
The only compatibility issue I can think of is clearance, but
the lever top choke actuator shouldn't be any worse than a
cable.
The previous owner of my Guzzi Ambassador installed these and
they work fine on that bike.
#Post#: 2124--------------------------------------------------
Re: Carburetor: Flip Up Choke
By: banquo Date: August 8, 2017, 4:56 am
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I have tried and failed to find the previous correspondence.
However, I do remember posting the exploded diagram for the
VHB29, and it showed both flip-up and cable operated enrichener
options, so my guess is that they are interchangeable. It's only
a sealing plunger after all. Even in Scotland, I can usually
flip off the enrichener almost immediately.
#Post#: 2357--------------------------------------------------
Re: Carburetor: Flip Up Choke
By: patentgeek Date: June 7, 2018, 8:10 pm
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Looping back on this.
I had to slightly increase the counterbore diameter on my carb
to fit the flip-top choke. I read somewhere on-line that the
early VHB carbs required this modification. The previous owner
of my 1970 Ambassador installed flip-top chokes, and it looks
like the same modification was required on that bike.
#Post#: 2360--------------------------------------------------
Re: Carburetor: Flip Up Choke
By: banquo Date: June 8, 2018, 3:41 am
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Interesting; increase the counterbore where the plunger fits?
By how much?
#Post#: 2368--------------------------------------------------
Re: Carburetor: Flip Up Choke
By: patentgeek Date: June 8, 2018, 2:31 pm
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Yes, the counterbore where the plunger fits. The original
counterbore is slightly too small.
I don't have the measurements in front of me, but the
modification could be done with a hand drill as the depth of the
counterbore isn't critical.
This doesn't seem to be documented anywhere. I found one
passing reference on a Dellorto supplier site indicating a
slight modification was required for early VHB carbs.
#Post#: 2372--------------------------------------------------
Re: Carburetor: Flip Up Choke
By: banquo Date: June 8, 2018, 3:48 pm
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Good to know; thanks for the tip
#Post#: 2540--------------------------------------------------
Re: Carburetor: Flip Up Choke
By: Dunders Date: February 9, 2019, 9:33 am
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[quote author=patentgeek link=topic=326.msg2368#msg2368
date=1528486261]
I found one passing reference on a Dellorto supplier site
indicating a slight modification was required for early VHB
carbs.
[/quote]
Does this also apply to VHB 30 carbs? A PO fitted the 30 to
Bossom, and I have been thinking of replacing the choke with a
flip-up
TIA
Paul
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