<VV> [fastvair] Carburetor Mystery

[FrankDuVal]

Then there has to be a compromise somewhere, as the SU carburetor   is 
not electronic fuel injection, running a software closed loop for a 
perfect mixture at all possible operating conditions.

Just saying, all carburetors are compromises. The more they match all 
operating conditions, the more passages, etc, they have.

Frank DuVal

On 3/20/2020 8:22 PM, Hugo Miller via VirtualVairs wrote:
> No, because they don't have millions of passages and jets all over the 
> place that you can't unscrew, all just asking to get blocked or 
> obstructed! Only one jet in the entire carb, and that is kept clear 
> because it has a big needle poking up & down through it all the time. 
> Engineering elegance! Most carbs have all these complicated add-ons to 
> compensate for this or for that. Because of the SU's design, there is 
> nothing to compensate for in the first place!
>
> On 2020-03-21 00:16, FrankDuVal via VirtualVairs wrote:
>> Because they never get dirty?????
>>
>> That can't be true..... Ha!
>>
>> Frank DuVal
>>
>> On 3/19/2020 6:54 PM, Hugo Miller via VirtualVairs wrote:
>>> Now you know why I like SU carbs so much ;)
>>>
>>> On 2020-03-19 22:41, Bryan Blackwell via VirtualVairs wrote:
>>>> Hi Brian,
>>>>
>>>> I'm going to go with the 'something is dirty' answer.  I had a number
>>>> of mystery issues and finally sorted out how to clean the idle circuit
>>>> and that cleared up a lot of them.  My trick is to have the mixture
>>>> needle installed but backed out an extra turn or two, then spray
>>>> cleaner into the cluster hole above the idle siphon tube, and from the
>>>> other end back up the discharge port.  Solved a lot of issues for me.
>>>> Good luck!
>>>>
>>>> --Bryan
>>>>