Going from a 78cm dish to 88cm - major difference?

[dankargo]

Hi guys,

My 10 year old dish has started to rust at the back and sides which has left me very very tempted to bin it and replace it with an 88cm. I've planned to replace the fixings with something more sturdy in any case but just wondered if upgrading the dish by 10cm would give me a major improvement from my current one.

On the strong sats I usually get around 80-85%, about 58-74% on the Nordic 1w beam and feeds vary, some of the weaker ones I can't get at all.

I've attached photos of my current dish - it's been up since about 2006 so over a decade old! I have a TM-2300 motor that I only put up last year, also considering changing this if I do decide to upgrade dish.

 

[Lazarus]

Nowt wrong with that dish.

My 80cm Orbital also has rim rust, but there's no effect on performance.

If you want to slow down further rusting, just paint the rim with Kurust.

 

[Ghostleader]

If your thinking Triax TD 88 then yes, that dish is more like a 95cm for actual usable reflector coverage. I wouldn't bother with the motor unless its the old stock Techno's that the rear clamp assembly rusted to #*"¶ in no time.

Sent from my thl_T7 using Tapatalk

 

[Archive4]

Rust? What is that?

 

[Lazarus]

Another name for Red.

 

[Archive4]

Ah! That guy from Hellboy who has to file his horns off!

 

[dankargo]

If your thinking Triax TD 88 then yes, that dish is more like a 95cm for actual usable reflector coverage. I wouldn't bother with the motor unless its the old stock Techno's that the rear clamp assembly rusted to #*"¶ in no time.

Sent from my thl_T7 using Tapatalk

I think it probably is to be honest as the bolts look like they've already rusted after only a year!

Yep, a Triax 88 was exactly what I had in mind.

 

[Ghostleader]

Yip that's the ones, the 2600 model up was also afflicted with the same issue mate.

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[davemurgtroyd]

10cm increase in dish diameter increases its area by 31% - should give a significant improvement in signal providing larger dish is as efficient a design as the original.

 

[Lazarus]

Nothing that an application of Kurust wouldn't resolve.

 

[Archive4]

Nothing that an application of Kurust wouldn't resolve.

Commission or copyright ?

 

[Lazarus]

Just common sense for a cheap yet effective solution.

 

[Archive4]

Yes, ok, guess we will all have to believe that, but, two times within eight posts, on the same thread? Let alone the other threads it has been mentioned.
Must be commission based advertising and should be reported to Forum Gods, but alas .................

( Milamber has just exited the stage on the left! )

 

[archive10]

If your thinking Triax TD 88 then yes, that dish is more like a 95cm for actual usable reflector coverage.

10cm increase in dish diameter increases its area by 31% - should give a significant improvement in signal providing larger dish is as efficient a design as the original.

The TD88 is an 85 cm dish (width of dish).
Disregarding that the active areas is probably 82cm with normal LNBs, the dish dish is (85^2-78^2)*PI()*100/(78^2*PI()) == 18.75% bigger...
Maybe not worth the upgrade...
You'd probably want to go for a 100 cm (or larger). (100^2-78^2)*PI()*100/(78^2*PI()) == 64% bigger.

 

[BlindFaith]

If your thinking Triax TD 88 then yes, that dish is more like a 95cm for actual usable reflector coverage.

not true

 

[PaulR]

The TD88 is an 85 cm dish (width of dish).

Absolutely true but a TD78 is not 78cm wide, it's only 70cm wide. Which makes the difference greater.

 

[hairybadger]

Commission or copyright ?

wait till he gets started on Linux....

 

[Trust]

Absolutely true but a TD78 is not 78cm wide, it's only 70cm wide. Which makes the difference greater.

Yes thats rigt but the present dish aint a TDS78

 

[PaulR]

Ah, how true. But, having said that, I'd like to know whether the 78cm alluded to in the original post is measured vertically or horizontally.