Before spending several hundred dollars on an ASI, I would invest in a leakdown 
check. I think there are more owners with leaky pitot or static systems than 
bad ASI's out there.  You could have a cracked line, especially if you just 
rebuilt the airplane.



--- In [email protected], "jayschubox" <jayschu...@...> wrote:
>
> I have just test flown my '65 Alon after rebuilding from damage sustained in 
> 2001.  My airspeed indicator is very slow to start indicating and continues 
> to lag after climb out.  On final the indication drops away quickly to near 
> zero while my gps gives a ground speed of 70mph.  I have tries adjusting the 
> pitot tube, but seems to give no results.  Fittings are all tight and dont 
> appear to leak.  My guess is that my airspeed ind. probably needs to be 
> replaced.  Anyone else have a similar experience? Suggestions?  Thanks. Jay
>


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