Triax TD88 to replace Sky dish on chimney

Supercell

The current Sky dish as been stuck on my chimney for years and I want to replace it with TD88 and stick two lnbs on it for Saorsat and Freesat.
The house is a small bungalow so wind up at chimney level isn't as great as a two story presumably would be. The sky dish is mesh though so I guess the wind can pass through easier.
The Triax though is solid, what are the chances of me loosing a chimney next winter ??!!
I'm in Dublin about 2Km from the sea so not the most windy spot in general.

I can't wall mount on the side instead as the passageway around the house is shared with the neighbour (we own the left passageway but the chimney is on the right one - the neighbours) and I don't want the hassle of recabling everything unless absolutely necessary.

Thanks.

excollier

Good luck! I have a TD88, and they are not light, especially hanging from a chimney.
I hope the bracket assembly isn't drilled and screwed to the chimney. I saw one in Stranorlar, motorised, attached to a chimney on a two storey house, risky.

Gerry Wicklow

Does it have to go on the chimney? A dish will work at ground level once it can 'see' the satellites. Fixed to a back garden wall or such like would be far safer.

montgolfiere

At least 50 % of satellite dishs here in france are strapped to Chimneys. The winds in my area are HORRENDOUS. up to 80MPH+ on a regular basis. Granted the dishes are usually only 85 x 78 but on a good chimney bracket with ratchet strap pole system as we use here with the chimney behind as a wind break for those NW or W.esterlies, i think so long as the chimney is in good condition you should be Ok.
The Triax 88 is the largest Dish i would consider installing on a chimney in my zone.

BTW Perforated dishes appear 'solid' to Wind so are no real advantage.

kbell

Op, as you are in Dublin, could you not just leave the Sky dish in place( maybe add a quad lnb and extra cables) and use a small UHF aerial in your attic or external for Saorview, you should have no problem with reception.

Supercell

Thanks guys. reason I want to go down the dish route is that my wife is remotecontrol phobic so diseqc switching seemed to be the best of both worlds (I use a Dreambox in the kitchen and a Foxsat with custom firmware in the living room so this should be fine). Not bothered about MHEG-5 or the missing channels on Saorsat - RTE is really what we miss right now for the news, annual toy show and international soccer matches occasionally.
I have the dish already though I suppose i could just flog it on adverts.ie
I'll have a look at the chimney this weekend and decide what I'll do. if some others have ones this size then then I guess it should be OK here. The Sky dish is bolted in which is the main inconvenience - don't fancy drilling more holes in the chimney up there, hmm.

montgolfiere

http://www.fujionkyo.fr/produits/fixation/cerclage-cheminee-simple-etrier-p-91.html

no drilling with this sort of Chimney Bracket.... they are really easy to install and very Robust.

dodzy

montgolfiere wrote: »

http://www.fujionkyo.fr/produits/fixation/cerclage-cheminee-simple-etrier-p-91.html

no drilling with this sort of Chimney Bracket.... they are really easy to install and very Robust.

I know they are designed for chimneys specifically, but a single lashing to support a 90cm triax just worries me.

hju6

http://www.blake-uk.com/stack-strap/407-ss-bkt14.html

hju6

http://www.purplesat.com/index.php?p=1_14_GALLERY

Above are some pics of large dishes and installation options, remember the chimney should only be used as a last resort,

montgolfiere

they also come in 'single supports' so by installing 2 they have 2 straps and of course can be placed further apart to increase stability. and you can then fix the dish between the supports. Just make sure they are best place on the chimney to give shelter from the prevailing strong winds.

i do repeat that they are used widely in this VERY Windy part of France and even during Hurricane-Force2 winds of (max gust) 196 km/h 4 years ago, they nearly all survived with 80cm Dishes..... i had 2 chimneys demolished in probably 200+ instalations!!! (and these were 'poor quality' Chimneys).
We also around here have a VERY Strong SE wind ( up to 140km/hr) from time to time so realsitically it is the 'build-quality' of the Chimney that is the most important factor.

excollier

"....realsitically it is the 'build-quality' of the Chimney that is the most important factor."
And there is the unknown risk element.

iba

Supercell wrote: »

Thanks guys. reason I want to go down the dish route is that my wife is remotecontrol phobic so diseqc switching seemed to be the best of both worlds (I use a Dreambox in the kitchen and a Foxsat with custom firmware in the living room so this should be fine). Not bothered about MHEG-5 or the missing channels on Saorsat - RTE is really what we miss right now for the news, annual toy show and international soccer matches occasionally.
I have the dish already though I suppose i could just flog it on adverts.ie
I'll have a look at the chimney this weekend and decide what I'll do. if some others have ones this size then then I guess it should be OK here. The Sky dish is bolted in which is the main inconvenience - don't fancy drilling more holes in the chimney up there, hmm.

I might be interested in buying the dish if you sell.

Also like another poster said, I have an aerial just lying on some rafters in the attic to get the Irish Stations - works fine and Im dublin.

byte

This is what I'd suggest if you must really insist on using the chimney, similar to the cradle that hju6 has linked but with wire instead of straps. The one on the French link by montgolfire I wouldn't have faith in at all. Not a proper cradle and I could see it sink into the plasterwork over a period with the load of a big dish.

Even better though, would be this, double lashing. Bit more robust.

I'd still rather a big dish like that wasn't on a chimney though.

I've never had to but if it ever came to it I'd only attach a dish to a chimney using a lashing kit. Far too dangerous to just use a wall mount bracket.

Supercell

byte wrote: »

This is what I'd suggest if you must really insist on using the chimney, similar to the cradle that hju6 has linked but with wire instead of straps. The one on the French link by montgolfire I wouldn't have faith in at all. Not a proper cradle and I could see it sink into the plasterwork over a period with the load of a big dish.

Even better though, would be this, double lashing. Bit more robust.

I'd still rather a big dish like that wasn't on a chimney though.

Thanks byte, I'll probably go down that road if I do go the dish route this weekend. Those links are useful too so thanks for that as well.

I was wondering if you might know the answer to this also - the Lnb holder showing on that website has an accompanying video and the chap says its suitable for an 80cm dish, would I need to get something else for a TD88 ?

excollier

It would do fine, but it will only get you two satellites, as one of those holder fits the neck of the already fitted centre lnb, you will two of those for three lnbs.
I have fitted several of the three holder versions of that, and on 76cm dishes, with great success if you are after, say, 13, 19.2 and 28.2e.
Triax do their own 4 - lnb holder which can be modded to hold as many as 6 or more, mine is carrying 6 on a TD88.