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OT - Pneumatic Antenna Mast
Posted: Fri Apr 02, 2004 6:02 pm
by spareparts
Anyone have experience with Will-Burt pneumatic antenna masts?
http://www.willburt.com/
I have been asked to add one to a truck for a local repeater. They seem straighforward enough, but maybe there is someone with ENG experience that could provide first-hand info.
Martin
Posted: Fri Apr 02, 2004 6:29 pm
by Jonathan KC8RYW
Well, I am friends with a broadcast engineer at a TV station. I talked to him before in regards to those, and he told me that pneumatic masts are very expensive, and require a lot of routine maintance to work. He deals with those at his station.
He basically suggested crank-up designs, unless there was some particular reason for using a pneumatic mast.
Posted: Fri Apr 02, 2004 6:36 pm
by spareparts
Jonathan KC8RYW wrote:Well, I am friends with a broadcast engineer at a TV station. I talked to him before in regards to those, and he told me that pneumatic masts are very expensive, and require a lot of routine maintance to work.
Maintance where? The mast itself, Air compressor, cable carier?
Martin
Posted: Fri Apr 02, 2004 6:38 pm
by Jonathan KC8RYW
spareparts wrote:Jonathan KC8RYW wrote:Well, I am friends with a broadcast engineer at a TV station. I talked to him before in regards to those, and he told me that pneumatic masts are very expensive, and require a lot of routine maintance to work.
Maintance where? The mast itself, Air compressor, cable carier?
Martin
I wish I knew. Anyone else know? Otherwise, I'll ask him next time I see him.
Pleas take what I say with a grain of salt.
Air Mast
Posted: Fri Apr 02, 2004 9:17 pm
by Jason
40-50 foot air masts are available for less than 5K. Youll do less maintenance on them than you do on a mechanical crank up any day.
Posted: Sat Apr 03, 2004 7:34 am
by apco25
Our incident command rig has one and it works flawlessly with no problems or constant maintenance.
Posted: Sat Apr 03, 2004 3:50 pm
by jim
You'll have more problems, routine maintenance and repairs on a crank-up or electric motor operated unit than any air mast.
Will Burt masts are the way to go for camera, antenna or lighting rigs. I just spec'd a 25' air mast with 1" ID cable guide and a 100# top capacity and it came in about $4K. It takes up a 1' x 1' square area in the body and needs about 5' vertical clearance.
If you have on-board air already, that will save you $$$
Posted: Sat Apr 03, 2004 10:57 pm
by Sam
Will-Burt, Will-Burt, Will-Burt.
We run three TV trucks all day in all kinds of weather. Our previous news director really liked live shots, so the masts were averaging 15-20 cycles a week. Routine maintenance consists entirely of remembering to check the oil level in the mister from time to time.
They only weigh about 300 pounds - our Suburban can carry the 42-footer easily, and we have a 52-footer in an E-350. We ship them out for a rebuild every few years, but we get a loaner so the truck stays in service - eight bolts and an engine hoist and they slide right out.
One of our trucks came with a winch-up to save money, but it was a maintenance nightmare. The cables fray and bind, the bearings need replacement a lot, when the cable breaks it comes down *hard*. Ours got stuck about 30 feet up when the cable jammed. We had to get a bucket truck to lift it so we could cut the cable and ease it down. We had the truck fitted with air the following week.
Posted: Mon Apr 05, 2004 4:36 pm
by spareparts
I have a quote request out for a Willburt model 6-27 (40# load @ 26'10" max extension). The truck already has compressed air on board, so that should shave a few dollars off.
Will post the numbers if there's any interest.
Posted: Tue Apr 20, 2004 11:51 am
by Sam
I have a quote request out for a Willburt model 6-27
How's it coming? Any further info?