This thread interests me a lot since i've been using PPP almost
exclusively over the past few years. After i read the posts i decided to
test it out myself. I too was surprised. I got 133 mg / 100 sq in +/- 3
mg or 2.06g/m^2. I actually used a piece that was close to 100 sq in
(8.25"x12.125")so i would say it's accurate. This makes me wonder how
many people including myself could of been fooled about this for so
long?
Leo, has Roy White gotten back to you yet?
Chris
>>>>
But there was a problem. One of the girls wanted to build a LPP plane.
She
noticed the weight of the completed plane was a bit higher than she had
calculated from weighing the wood parts and using the published weights
for the
PPP film. It turns out that the PPP film she used weighed over twice
(2.2 grams
per meter squared) what she expected. We checked the other rolls by
weighing
some and got the same results for all. The PPP film was no lighter than
the 1.4
micron Ultrafilm that Ray Harlan sells and nearly twice as heavy as the
super
Ultrafilm we weighed.
Since I had planned to buy some PPP film for my own LPP's, I emailed Roy
White
about this. I have yet to hear back from him. I ended up using Tim G's
Tru-lite and Ray's super Ultrafilm on my planes.
Leo P
Bloomington IN
--
I weighed some OS film that was going on F1L parts today. The weight was
55mg/100si which seems to be usual for the last couple of rolls I've
had. My last roll of PPP - bought several years ago - was only a little
more than that.
--
It was 2.11 grams per meter squared. It will be OK for LPP, but too
heavy
for F1M. I feel regret at loosing an inexpensive and best film for F1M.
Good flying, Aki, we have a F1L and F1M contest at a 18m ceiling gym on
Friday
--
I think it would be a good move for purveyors of film to provide more
accurate weight estimates for what they are selling.
>>>
--- In Indoor_Construction_at_yahoogroups.com, "Mark F1diddler"
<f1diddler_at_...> wrote:
> Anyone weighs and measures their own samples of any material is
encouraged to add their result to the "materials weights" list in the
Files section. Don't delete others, just add yours. The list is supposed
to be Wiki style.
> Mark F1diddler
>
Received on Sat May 15 2010 - 17:55:13 CEST