REFLECTOR: Vacuum pump

[Clayton Chase]

How does the difference between a vacuum pump and a venturi affect
moisture?   The air enters the system through the other end.   I can
understand that inconsistent vacuum provided by a venturi could cause
damage, but you could do workarounds that should help.  An electric vacuum
boost pump that is on when the landing gear is down (and airspeed is low
and the venturi is not providing good suction) and a good vacuum limiter
should resolve most of the issues.
On Apr 10, 2013 8:12 AM, <nmflyer1 at aol.com> wrote:

> Yup, Had those in my 56 Chevy too. They would almost come to a stop when
> you hammered the throttle.
>
> For me, I just went all electric. I didn't want to deal with the vacuum
> issue and length of runs. So far, so good.
>
> Kurt
>
>
>  -----Original Message-----
> From: Robert Wood <slvegl99 at aol.com>
> To: Velocity Aircraft Owners and Builders list <reflector at tvbf.org>
> Sent: Wed, Apr 10, 2013 8:47 am
> Subject: Re: REFLECTOR: Vacuum pump
>
>  Yeah, I was just reflecting on my '37 Ford wipers.
>
> Bob Wood
>
>  Sent from my iPad
>
> On Apr 10, 2013, at 10:44 AM, nmflyer1 at aol.com wrote:
>
>   That has been tried & failed. Between moisture and pulsing (unless you
> have a Big vacuum tank with a dryer). Last guy that I know tried it had to
> replace all his instruments.
>
> Kurt
>
>
>  -----Original Message-----
> From: Robert Wood <slvegl99 at aol.com>
> To: Velocity Aircraft Owners and Builders list <reflector at tvbf.org>
> Sent: Wed, Apr 10, 2013 8:40 am
> Subject: Re: REFLECTOR: Vacuum pump
>
>  How about a line from the intake manifold?
>
>
> Bob Wood
>
>  Sent from my iPad
>
> On Apr 10, 2013, at 10:33 AM, "Richard J. Gentil" <
> richard at naples-air-center.com> wrote:
>
>   Lol!!!
>
>  That would just look so wrong in so many ways!
>
>  Richard
>
> Sent from my iPhone 5
>
> On Apr 10, 2013, at 10:10 AM, Mark Magee <edjonesbrady at gmail.com> wrote:
>
>   I just replaced mine and tried to figure a way to eliminate it...
> Anyone using a venturi??? With our speed they should pull hard...
> They would look a little 'retro' but would be easier than replacing these
> disposable Rapcos.
> Mark
>
>
> On Wed, Apr 10, 2013 at 8:51 AM, Richard J. Gentil <
> richard at naples-air-center.com> wrote:
>
>> Bob,
>>
>> Don't forget to blow out the vacuum line and clean/replace the air filter.
>>
>> Richard
>>
>> Sent from my iPhone 5
>>
>> On Apr 10, 2013, at 8:38 AM, Robert  Wood <slvegl99 at aol.com> wrote:
>>
>>  > Monday on a flight with my Velocity XL with a Lycoming IO 540 I
>> experienced a vacuum pump failure. Any secrets in the procedures for
>> removing and replacing it? Is the drive shaft to be lubricated when the
>> replacement is installed?
>> >
>> > Bob Wood
>> >
>> > Sent from my iPad
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