Gunner Asch wrote:
> On Sun, 29 Jun 2008 19:09:06 GMT, Jim Chandler <n427c@[EMAIL PROTECTED]
> wrote:
>
>
>>Gunner Asch wrote:
>>
>>
>>>On Sat, 28 Jun 2008 00:10:36 -0400, "Morgans"
>>><jsmorgan@[EMAIL PROTECTED]
> wrote:
>>>
>>>
>>>
>>>>"Tim Wescott" <tim@[EMAIL PROTECTED]
> wrote
>>>>
>>>>
>>>>
>>>>>For a motor stand I'm using a Tatone stand with a piece of 1/8" angle
iron
>>>>>on which the engine is bolted.
>>>>>
>>>>>Don't do this, unless you want some practical education in
resonances. At
>>>>>the 'bad frequency' (which was just a bit lower than what the engine
>>>>>really wanted to do) I could see the cylinder moving through a 1/4"
long
>>>>>arc.
>>>>
>>>>Another thing you can do, until the engine sizes get really big (big
enough
>>>>to move a concrete block <g>) is to mount the stand to a piece of 2 X
8
>>>>(either using the steel between the engine mount and the wood, or not)
and
>>>>mount the whole thing on a 8 X 8 X 16" concrete block.
>>>>
>>>>The block adds enough mass to purty much guarantee that the resonance
will
>>>>be too low to matter, and the wood helps even more to dampen out any
small,
>>>>fast vibrations.
>>>>
>>>>That, plus you don't need to do anything except set your block out in
the
>>>>yard, and crank up the engine.
>>>>
>>>>Like I said, until you go with a really big gasser, it ain't goin'
nowhere!
>>>><G>
>>>
>>>
>>>
>>>Anyone need one..Ive got what appears to be a new in box 12vt model
>>>engine starter.
>>>
>>>
>>>Gunner, with a half completed glider hanging in the reloading
>>>shop....sigh
>>>
>>>
>>>
>>>at yoyodyne they were all veterans of the psychic wars
>>> exiled from the eighth dimension where the winds of limbo roar"
>>> mariposa rand mair theal
>>
>>
>>
>>What kind of half-completed glider do you have, Gunner? My
>>half-completed glider is a "Spirit", and I think that's what I'm waiting
>>for to move me to complete it. :-)
>>
>>Jim
>
>
> fiberglass fusalage, plywood covered foam wings, with about a 72"
> wingspan. A good friend gave it to me, as Ive always liked gliders,
> and he was an engine guy. I bought all the servos, a controller (have
> to go check what kind...futaba pwm rings a bell...and we started
> building two planes. The idea was the bird he was building was going
> to be the tow plane for launching my glider. I even designed a release
> mechanism...5 channel radio irrc
>
> Then he grabbed his chest and dropped dead.
>
> I kinda lost interest at that point..and its been hanging up there,
> with the wings not yet covered for about 10 yrs now.
>
> I live in the rolling foothills , with great thermals and good slopes,
> and many model airplane events are held here, or used to be..the free
> flights being one. Its about 105F on average here in the summer, and
> wth the wide open spaces, and great thermals..its a natural for
> gliders.
>
> someday ill get around to fini****ng it. Id like to. But..Ive got two
> motorcycles Ive not ridden for at least 8 yrs, and a 22' sailboat
> thats not been in the water for at least that long and the Hobi
> 16..even longer.....working away from home for weeks at a time...when
> i get home...too much to do, not enough free time.
>
> Gunner
>
> at yoyodyne they were all veterans of the psychic wars
> exiled from the eighth dimension where the winds of limbo roar"
> mariposa rand mair theal
You sound like me with all the projects, and I don't even work away from
home. Good luck with it. I can imagine that your friend dropping dead
would sort of take away from the enthusiasm. If you ever get to working
on it again, just think of it as a memorial to him.
Jim
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