 |
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***Over the six tests shown above the average pull out
strength was 2995.85 pounds. The stainless steel insert
itself weighs a mere 29 grams (~1/16th
of a pound). Tests
were conducted by an independent lab. |
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***Dream developed stainless steel inserts within the
first year of going into business (2003) because Off-The-Shelf
(OTS) inserts for composites were found to be completely inadequate
for high performance & high
stiffness use. They
would easily break through or, under smaller loads, would spin
free within the sandwich core. Well before either of these occur
the OTS insert would allow small-scale movement; a lack of stiffness. |
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***High stiffness usually brings with it extremely high
strength, which explains why Dream's inserts have such extreme
pull out strength. Dream's goal is unusually high stiffness,
not so much high strength, since it is a telescope with fairly
fragile optics, not a tank. Because Dream has always specialized
in the use of sandwich core, developing our own inserts was one
of many critical path items in achieving extremely high performance,
like superb all-sky performance of the telescopes. |
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***The back of Dream's 24"
telescope uses 12
inserts the size independently tested above. They secure the
backplate to the telescope tube. The backplate holds the carbon
fiber M1 support assembly and M1. For the 24" telescope
this entire backplate assembly weighs less than 75 pounds, which
includes the weight of the 24" Dream zeroDELTA™ engineered lightweight
mirror. |
|
***Like the carbon fiber and carbon fiber skinned sandwich
core parts, all stainless steel inserts are designed and prouced
in-house. Telescope systems are easy, if you haven't taken the
time to truly learn them. |
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