52mm Tacho for 3300a running off std pickup

[justinjsinclair]

Hi all, I am in the process of rebuilding a Jab SP500 with 6 cylinder. I have ordered a Rotec Kit for it which will have alternator and elec ignition.
The current Tacho size is 80mm and huuuuuge 

I am hoping a std vdo or saas 52 mm tacho can be programmed to run off the coil or alternator but I thought I would see if anyone has used the original pickup on the smaller tacho. 
 

pics here on yousnaptwitfacebook 

 

https://www.facebook.com/media/set/?set=a.434038505494427&type=3

 

 

 

 

Edited October 8, 2022 by justinjsinclair

[kgwilson]

What's wrong with the original? It is the same diameter as the ASI VSI & Altimeter & you will have a big hole to fill in if you go for a smaller instrument & it will not be as easy to read or set rpm.

[justinjsinclair]

Hi KG, I am doing a new panel, I haven’t decided if I am keeping the 80mm ASI and Alt, the Tacho takes up a lot of room and I have a pretty healthy case of OCD when it come to instruments. At this stage I just want it all neat and tidy.