50mm cranked Mast?

1080 jawbreaker

Well-known Member
should be able to squeeze in a few more sats on the arc if i can find a 50mm cranked mast. Only seen thinner ones though. would a 32mm mast be able to take the load in heavy wind?
 

Blu4KHD

Well-known Member
Only ever seen inch and a quarter steel in cranked (swan neck), have you not entertained the idea of larger wall brackets with a straight 50mm pole
 
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1080 jawbreaker

Well-known Member
my dish sits behind a shed above roof level but when moved to 22/24.5/30w trees are in the way. i get signal from 22w on the strong transponders. Get 24.5 once the trees have dropped there leaves. Hoping a cranked mast would shift the dish forward just enough to clear the trees and pull more signal.
 

Blu4KHD

Well-known Member
Not suggesting you try this yourself but if you have the equipment at home could you not gently ease a 50mm diameter pole depending on size into a cranked position or maybe ask a local manufacturing/engineering firm to knock you one up to spec.
 

pedro2000uk

Distinguished Member
should be able to squeeze in a few more sats on the arc if i can find a 50mm cranked mast. Only seen thinner ones though. would a 32mm mast be able to take the load in heavy wind?

Don't know anyone that makes 50mm cranked masts/ swan necks .. (except us :devil:)... a local engineer could charge you quite a bit & they are not 'that' easy to do as one off's, unless you are not bothered if they come out dog legged- a pipework company somewhere might do them as a product but they'd be even dearer if it's for the pipework game.

The 30-32mm sky cranked poles are pretty tough though- they are made of higher tensile steel like the Raven AZ/EL brackets on the dishes & are also thicker than most of a similar O/D you see.... (really nice stuff, steel wise)

... how big is the dish & how far do you want to project it?
 

1080 jawbreaker

Well-known Member
Don't know anyone that makes 50mm cranked masts/ swan necks .. (except us :devil:)... a local engineer could charge you quite a bit & they are not 'that' easy to do as one off's, unless you are not bothered if they come out dog legged- a pipework company somewhere might do them as a product but they'd be even dearer if it's for the pipework game.

The 30-32mm sky cranked poles are pretty tough though- they are made of higher tensile steel like the Raven AZ/EL brackets on the dishes & are also thicker than most of a similar O/D you see.... (really nice stuff, steel wise)

... how big is the dish & how far do you want to project it?

1mtr, need to get a quality 1.1 at some point though, hoping a 12" crank would tide me over
 

pedro2000uk

Distinguished Member
1mtr, need to get a quality 1.1 at some point though, hoping a 12" crank would tide me over

Is it going up a roof pitch?

We do quite a few of these but making & installing custom 50mm shed 40 swan necks is quite a bit of engineering to do properly - especially for 1.1s, it has to take 100mph+ AND stay on sat... I think we 'are' the only company that make 50mm swan necks for satellite installs- usually for extreme line of sight issues or to hide the dish.

That 32mm O/D sky dish swan neck - good as it is, wouldn't be up to a 1.1 like that & the 2 wall brackets that come with them definitely not.

You could get a couple of quotes from local engineering companies - won't cost you anything for quotes.. I'd be interested too, I get told a lot we don't charge enough.
 

pedro2000uk

Distinguished Member
Why not use a T+K bracket?

TBH Martin... I actually really hate this widespread use of T & Ks for satellite installs & with a passion - apart from not what he wants here, they are designed all wrong for putting big dishes on - even the best ones built to pass the British standard for (aerial) T & K brackets are only made to the minimum to put aerials on long poles- & they are designed to allow a certain amount of sway which won't push the polarisation out on an 'aerial' that much & actually reduces strain on the pole on that plain and the brackets so costs can be kept down all round & any company not making them as cheap as they can will go to the wall pretty fast - but that design is the last thing you want on a satellite dish even though they have been unofficially adopted, it doesn't make it right - just look at the commercial market - you'll never see a T & K- genuine satellite bracket designs are quite different**.

We buy in about the strongest T & Ks you can get & only via the trade & then modify them up to do the job & never use them as they come- & only do it that way because that's the most cost effective way to keep the price down for customers ... I would dearly love not to use them, but this market has gravitated to thinner & thinner satellite brackets**.. & there's quite a lot of T & Ks that are too & not to the BS either, they all say 'HEAVY DUTY' but that means nothing - I've seen some made of angle iron that look thick at the edge but are milled to go down to as little as 1mm in the middle..:eek: - I picked up an example on a job in London recently - absolute thin, flimsy, shiny rubbish T/K & about a 1/2- 1/3 the weight of ours & would have been an absolute disaster had someone tried to use them for sat.

**..Satellite Superstore/Primesat also design & sell dedicated satellite brackets -very different design wise from T & Ks (& not an 'aerial' T & K in sight), but their pricing shows the cost problems.
 

1080 jawbreaker

Well-known Member
ill give a few local engineering/fabricaion shops a ring. Just need to measure up for minimum pole length after the neck, would be sick if there wasnt enough pole to slide the motor on to :)

My current pole is clamped to the shed with a small bracket to get past the shed roof overhang with flat iron bars running horizontally inside to spread the load. The bottom of the pole is clamped to a base mount which is concreted in
 

pedro2000uk

Distinguished Member
ill give a few local engineering/fabricaion shops a ring. ...

You should try to impress on them just how good it all has to be to take a 1.1 (& stay on sat) ..you will almost certainly get local engineers that won't know what it actually takes ..
 

1080 jawbreaker

Well-known Member
im getting no where. "sorry we dont do tubeing, you could try"............
 

MartinPickering

Well-known Member
Try an exhaust system specialist. Not the likes of "Kwik Rip-off" but a specialist that makes up systems for customer cars and racing cars.
 

1080 jawbreaker

Well-known Member
in the end i just loped a load of branches off the offending trees :)
 

MartinPickering

Well-known Member
in the end i just loped a load of branches off the offending trees :)

"Lope: to run or move with a long bounding stride." :D

TBH Martin... I actually really hate this widespread use of T & Ks for satellite installs & with a passion

I agree. The trouble is that, as you know, it costs a lot to manufacture even a small quantity and then they sit on the shelf forever because they are "too expensive". We can't afford that so we offer what the customer is prepared to pay for and we specifically recommend mounting the dish either between the brackets or very close to the top bracket. That's not a cure but it's the best advice we can offer. :rolleyes:
 

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