Today's Message Index:
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1. 04:05 AM - Re: Re: Vi Kapler hinges (Jack Textor)
2. 01:20 PM - Re: Vi Kapler hinges (taildrags)
3. 01:22 PM - Re: Vi Kapler hinges (taildrags)
Message 1
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Subject: | Re: Vi Kapler hinges |
You are a trooper Oscar! As I look back to my set bought from Vi, it was a bargain!
Did Vi cast his own?
Jack Textor
Sent from my iPad
> On Mar 19, 2017, at 11:49 PM, taildrags <taildrags@hotmail.com> wrote:
>
>
> OK, so another update on the cast aluminum hinges. I have good news and bad
news. The good news is that I just sent out 3 sets of hinges and hand-delivered
a 4th set to a builder a couple of days ago. More good news is that I've started
on 4 more sets out of 21 that are on the waiting list, so slowly but surely
I'm getting there ;o)
>
> The bad news is that of my remaining stock of rough castings, I have just enough
to finish the sets for the people on the waiting list, and not a single set
more. With a little luck, I'll have everyone on the list supplied with hinges
by summer and will be all out of rough castings to make any more.
>
> Now for more possible good news: I've contacted the person who supplies me with
the rough castings and he got right back to me. He's going to see if the foundry
can run me off another batch of enough to make another 20-25 sets. Fingers
crossed!
>
> --------
> Oscar Zuniga
> Medford, OR
> Air Camper NX41CC "Scout"
> A75 power, 72x36 Culver prop
>
>
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=467469#467469
>
>
>
>
>
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>
>
Message 2
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Subject: | Re: Vi Kapler hinges |
Jack; when I purchased the parts and tooling from Vi, there were some rough blanks
as well as castoffs included in the stuff. The castings that he included
look identical to the ones that I'm using, and he gave me the name of the foundry
that he used. They are the same castings, presumably from the same alloy
although the ones that I tested went to almost 30% more load than Vi's test and
never failed to fracture like his did. Either the latest ones are a stronger
alloy or maybe Vi didn't bother running his test as carefully as I did mine.
The test article that he sent me a picture of failed at 700 lbs. That means that
a single one of his hinges could hold up the entire empty weight of an Air
Camper like mine. The hinge pair that I tested went to 900 lbs before I stopped
the test and it still had not failed. The hinge base deformed plastically
under the load, but nothing fractured. Another 188 lbs of load and that hinge
would have been holding up the equivalent of the entire maximum gross weight
of my Air Camper (1088 lbs). Let's just say that the cast hinges are pretty strong.
--------
Oscar Zuniga
Medford, OR
Air Camper NX41CC "Scout"
A75 power, 72x36 Culver prop
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=467473#467473
Message 3
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Subject: | Re: Vi Kapler hinges |
Oops... I just re-read what I wrote and what I should have said was that my hinges
"never failed to the point of fracture" like Vi's did.
--------
Oscar Zuniga
Medford, OR
Air Camper NX41CC "Scout"
A75 power, 72x36 Culver prop
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=467474#467474
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