<VV> weird tach

[FrankCB]

Arend,
     Having TWO voltage regulators in the car is like having TWO wives to tell you what to do.<GGG>  Remove the original regulator that was designed for the generator and use the internal one that was designed to work with the alternator you now have.  This may solve your tach problem.
     Regards,
     Lach alstubieft,
     Frank "my long-ago girlfriend was Dutch" Burkhard

In a message dated 10/07/08 10:37:03 Eastern Daylight Time, arendhuismus at xs4all.nl writes:
Hi Guys, 

a few weeks ago i posted a question about a bad working tach and after some answers i decided to contact Clarks, who sold me the Spyder dash, where the tach is part of. I immediately got an answer with apologies and a week later i found a new/old tach in the mail, which was checked. 
I have changed them out and this one is better, but still it seems to work like it's a sort of vacuum gauge; if i'm doing 40 miles in 4th gear, and hit the accelerator, it instantly jumps from 2000 to almost 3000 rpm. Looks good, but the car is not equally responsive...(haha) 
BTW i installed an alternator in the car with an internal voltage regulator, but the original regulator is still working in the car too; should this have anything to do with it? 
Any ideas and input are welcome 

Arend Huisman (Netherlands) 
'64 Monza vert