Can the Venturi System accept modern vacuum Instrument Replacement

Can the Venturi System accept modern vacuum Instrument Replacement


Can I replace the origional circa 1956 DG and Horizon with a modern vacuum instruments? Will the modern vacuum DG and Horizon work efficiently?

Missy J was born with a venturi vacuum system and still has the original 1956 DG (very inaccurate) and Horizon which are both boat anchors.

I am a VFR pilot with no intentions of ever conducting IFR flights. I might replace the DG with a dash mounted compass to same money; once again I am a VFR pilot.

I recognize the need for a horizon on board for that once in a while cloud busting, but I would rather not have a horizon to aviod doing something stupid or doing anything beyond by abilities.

Additionly, I have a Garmin 196 as a back up for instruments and navigation.

Does anyone know where I might find yellow tag electric DG and Horizon; covering all bases here just in case? Oh, if anyone has second hand DG or Horizon for sale please let me let me know.

Seeking advice!

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Re: Can the Venturi System accept modern vacuum Instrument Replacement

I have a 1959 Cessna 172.  In November of 1985 I replaced both the gyro horizon and the directional gyro with the new type (3 1/8) instruments.  These are both driven by two venturi's  that haven't failed yet.  To this date the DG does not precess.  I bought them both from Century Instruments in Wichita, Kansas.  When I ordered them I talked to the owner and explained to him that they would be driven by venturi's,  he said he would take care of me.  Here it is 18 years later and they still work great.  I've flown solid IFR with them, both on the East Coast and the West Coast.  Century Instruments did a great job in rebuilding them  for my application.

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Re: Can the Venturi System accept modern vacuum Instrument Replacement

I have a 58 172, it has vacume mounted on the front of the 0-300 engine. However the pully has worn out, and created some vibration, resulting in the mounting bracket to fracture, i am looking for a new bracket and pully, the model for the kit may be 113a6, using a 200cw-6 or 212cw-6 parker vacume pump, stc#       sa3-664 (i think) does anybody have any parts or advise?John Sitar wrote:

> I have a 1959 Cessna 172.  In November of 1985 I replaced both
> the gyro horizon and the directional gyro with the new type (3
> 1/8) instruments.  These are both driven by two venturi's  that
> haven't failed yet.  To this date the DG does not precess.  I
> bought them both from Century Instruments in Wichita, Kansas.
> When I ordered them I talked to the owner and explained to him
> that they would be driven by venturi's,  he said he would take
> care of me.  Here it is 18 years later and they still work
> great.  I've flown solid IFR with them, both on the East Coast
> and the West Coast.  Century Instruments did a great job in
> rebuilding them  for my application.
>
>

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Re: Can the Venturi System accept modern vacuum Instrument Replacement

re-doing cessna 172 59 model looking for recomendations for affordable vfr avionics package. Any suggestions..thanks

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Re: Can the Venturi System accept modern vacuum Instrument Replacement

I read your comment about the venturi system you use on your C-172.  I have a 1956 C-172 that uses two venturi systems to the DG and Horizon gyros.  I like them.  Do you know who works on those nowadays?  I have tried to look for the folks that did your job in KS.   I live in Minnesota and someone told me once that the venturi system is legal for me to fly IMC.  I have tried a few times without any problem, but I would like to have someone with experience on this kind of system to check these venturies.  Most of the avionics or mechanics I have talked to have been very discouraging about keeping that system.  They are afraid the venturi system will freeze at the first glimpse of humidity (not freezing conditions) such as flying in the clouds.

I appreciate your input.

Thanks,

Alejandro.

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Re: Can the Venturi System accept modern vacuum Instrument Replacement

hi, is that possible to fly without vacuum system on board? whats my level of  safety?

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