Yeah, they send a guy from Fukashima

73, Steve  KW3A

.

On 12/16/2013 12:54 AM, Jim Gammon wrote:
> Alan, how large is the foundation for one of these towers?  Does the
> engineer from Japan have to supervise the installation of the base?  Jim
> WA6EKS
>
>
> -----Original Message-----
> From: Alan R. Downing
> Sent: Sunday, December 15, 2013 10:46 PM
> To: [log in to unmask]
> Subject: Re: Luso towers
>
> The width of the bottom section is 65 inches, less than I would have
> guessed.  Width of the top section is 18 inches.  I don't know what the foot
> print of the rotating base is, but that may well be significantly larger
> than the first section of the tower itself.
>
> Here is an interesting fact, when buying any of these towers, you must pay
> for a Luso construction engineer to travel to your station from Japan, to
> supervise the entire preparation and installation activities..  You must pay
> all of his expenses, including airline tickets, hotel room, etc.  The reason
> for this is to assure that the tower is installed correctly.  My friend that
> just bought the 90 foot model, had to pay around $5 grand for the engineers
> presence.
>
>
> Alan
>
>
>
>
> Alan R. Downing
> Phoenix, AZ
>
>
> -----Original Message-----
> From: For blind ham radio operators [mailto:[log in to unmask]]
> On Behalf Of Colin McDonald
> Sent: Sunday, December 15, 2013 10:36 PM
> To: [log in to unmask]
> Subject: Re: Luso towers
>
> heavy duty alright at around 15 tonnes...that sounds a bit on the heavy
> side?  A heavy duty 68 foot del hi only weighs maybe 500 pounds total...this
>
> must be a very very large tower? that is, very large spread at the bottom to
>
> support so much weight at the top?
> Obviously a 68 foot del hi is only rated for about 12 square feet of wind
> load though lol.
> I can't imagine shipping on a beast like that haha.
> 73
> Colin, V A6BKX
> --------------------------------------------------
> From: "Alan R. Downing" <[log in to unmask]>
> Sent: Sunday, December 15, 2013 8:14 PM
> To: <[log in to unmask]>
> Subject: Luso towers
>
>> Hello list,
>>
>>
>>
>> Has anyone on the list looked into Luso towers when shopping for a new
>> one?
>> For those that aren't aware of Luso, it is a Japanese tower builder of
>> heavy
>> duty electrically operated crankup towers in heights from 90 feet to over
>> 300 feet.  They accommodate antenna, rotor, and mast weight of up to 2200
>> pounds.  The 150 foot model is rated to accommodate 140 square foot of
>> antenna, and goes from a fully retracted height of 42 feet to a fully
>> extended height of 145 feet in 29 seconds.    Masts of up to 8.6 inch
>> diameters are accommodated with multiple thrust bearings.  Each model is
>> available with a number of options, including a rotating base, and
>> automatic
>> retraction when winds exceed a preset level.  The 150 foot model weighs
>> 29700 pounds excluding options.
>>
>>
>>
>> A friend just took delivery of the 90 foot model with the rotating base
>> and
>> automatic retraction system.  Because of my recent good news on the health
>> front, I am seriously thinking of ordering the 120 foot tower with the
>> rotating base, automatic retraction, 4 inch mast with thrust bearings, and
>
>> a
>> prop pitch rotor with Green Heron controller.
>>
>>
>>
>> If anyone has investigated the Luso offerings, I'd appreciate discussing
>> them with you.
>>
>>
>>
>> Merry Christmas everyone, and a very happy New Year.
>>
>>
>>
>> Best 73
>>
>> Alan
>>
>>
>>
>>
>
>
>