TE probes

[4Z]

I suspect that a repair I did recently on the TE probe on my DG 800B
didn't work. So it's time to get a replacement. My factory probe is
8mm but the end that fits into the receptacle has a small reduced
diameter section (4mm) that must fit into a reduced diameter hole
inside the receptacle. My previous gliders didn't have this smaller
section. So my question is, does any replacement probe have to have
this arrangement, or can I just plug in an 8mm probe if it seals
properly?. I'd like to get it right cause these things aren't cheap.
Thanks, Tim

[jfitch]

On Tuesday, June 18, 2013 6:09:10 AM UTC-7, 4Z wrote:
> I suspect that a repair I did recently on the TE probe on my DG 800B
>
> didn't work. So it's time to get a replacement. My factory probe is
>
> 8mm but the end that fits into the receptacle has a small reduced
>
> diameter section (4mm) that must fit into a reduced diameter hole
>
> inside the receptacle. My previous gliders didn't have this smaller
>
> section. So my question is, does any replacement probe have to have
>
> this arrangement, or can I just plug in an 8mm probe if it seals
>
> properly?. I'd like to get it right cause these things aren't cheap.
>
> Thanks, Tim

These are two concentric tubes with different pressures in them, aren' they? Hence "double probe"? Mine has three concentric tubes, or a triple probe. Static, pitot, and suction. Depending on what is hooked up to what, putting a single tube in there might give you some interesting instrument readings....

[StaPo]

You can adapt 8mm multiple type probe installation
to single 8mm TE probe via joining existing 2-3 hoses outputs together via T-piece(s).
But do simple leak test on the ground before flight testing to avoid "interesting" instrument readings...

[jfitch]

On Tuesday, June 18, 2013 7:49:16 AM UTC-7, StaPo wrote:
> You can adapt 8mm multiple type probe installation
>
> to single 8mm TE probe via joining existing 2-3 hoses outputs together via T-piece(s).
>
> But do simple leak test on the ground before flight testing to avoid "interesting" instrument readings...

But you will have only a single probe system then (probably suction) and he is starting with a double probe...fine if nothing is connected to static or pitot.