REFLECTOR: High temp Epoxy
davedent at comcast.net
davedent at comcast.net
Thu Jun 21 23:39:25 CDT 2007
I have been using Pro Set 125 with the 229 hardener since 1997 for all my structure layups. I will use nothing else. I started using it when working with Scaled Composites and Aeroviorment. They showed me that they would only use it for major structure layups that didn't require prepreg. It can take high temps and wets out great even with heavy carbon cloth.
Back then I bought five gallons of it with the extra tropic hardener for had days and needed longer pot life. I have gone through all five gallons of it now and am ready to buy another five. It has never gone bad with all the test I have done.
If you are starting out on a new project I would defiantly buy five gallons at a time. There is a great saving there. I bought the five gallons with the extra hardener and two gallons of West System for $380. More like $400 now, I'm sure. Believe me, that's a lot cheaper then buying a gallon at a time. I use the West System for non structure layups and micro surface fill only. All these are Gougeon Brothers products.
I bought the larger quantities through West Marine the boat soppy hardware company.
Dave
----- Original Message -----
From: Scott Derrick
To: Velocity Aircraft Owners and Builders list
Sent: Tuesday, June 19, 2007 7:49 AM
Subject: Re: REFLECTOR: High temp Epoxy
Dean,
I switched to Pro-Set a while ago. They finally came out with some blends that don't require you to do a high temp post cure. Rutan recommends it.
Space Ship One was built with it..
http://www.cstsales.com/
Scott
Unterreiner wrote:
Can anyone can give me some advice on epoxies that will withstand higher
temps. I have a center mounted top exhaust system (IO-540 heads on a IO-360)
which causes my top cowl surface temps to get up to 250 F. I want to uses a
higher temp fiberglass in this area. I opted to go with S-glass, but I can't
find any info or supplier who supply high temp resins. Would appreciate any
info in this area.
Dean Unterreiner
----- Original Message -----
From: <reflector-request at tvbf.org>
To: <reflector at tvbf.org>
Sent: Tuesday, June 19, 2007 4:04 AM
Subject: Reflector Digest, Vol 37, Issue 79
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Today's Topics:
1. Re: Pitch trim (KMis178813 at aol.com)
2. Re: Pitch trim (Darrell & Nora Kufalk)
3. Re: Pitch trim (Christopher Barber)
4. Re: [SPAM] Re: Pitch trim (Scott Baker)
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Message: 1
Date: Mon, 18 Jun 2007 23:04:20 EDT
From: KMis178813 at aol.com
Subject: Re: REFLECTOR: Pitch trim
To: reflector at tvbf.org
Message-ID: <ccc.1434ddb7.33a8a1b4 at aol.com>
Content-Type: text/plain; charset="us-ascii"
That's normal. In flight the elevator does not have a load on it. the trim
is much more effective. it's all good
Ken
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Message: 2
Date: Mon, 18 Jun 2007 22:31:03 -0500
From: "Darrell & Nora Kufalk" <kufalk at wi.rr.com>
Subject: Re: REFLECTOR: Pitch trim
To: "'Velocity Aircraft Owners and Builders list'"
<reflector at tvbf.org>
Message-ID: <004001c7b222$43b499d0$c5831d41 at DarrellK>
Content-Type: text/plain; charset="iso-8859-1"
Chris,
Define ?considerable?. ? second? 3 seconds? My elevator moves up or
down
the instant (less than a ? second) I press the button.
Darrell
-----Original Message-----
From: reflector-bounces at tvbf.org [mailto:reflector-bounces at tvbf.org] On
Behalf Of Christopher Barber
Sent: Monday, June 18, 2007 10:00 PM
To: Velocity Aircraft Owners and Builders list
Subject: REFLECTOR: Pitch trim
I wired up the pitch trim tonight and noticed there is considerable lag
between when I activate the swith/motor and the trim spring/elevator
actually start moving. Is this normal? Is there a way to adjust this.
What, praytell, am I missing this time. Thanks.
All the best,
Chris
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Message: 3
Date: Mon, 18 Jun 2007 23:15:23 -0500
From: "Christopher Barber" <CBarber at TexasAttorney.net>
Subject: Re: REFLECTOR: Pitch trim
To: "Velocity Aircraft Owners and Builders list" <reflector at tvbf.org>
Message-ID: <01e601c7b228$76321c60$0401a8c0 at userte4ok6qti7>
Content-Type: text/plain; charset="iso-8859-1"
3 seconds, maybe more. I will try to remember to time it on the morrow
(or even tomorrow <g>). I hope to spend the day at the hangar. Thanks.
All the best,
Chris
----- Original Message -----
From: Darrell & Nora Kufalk
To: 'Velocity Aircraft Owners and Builders list'
Sent: Monday, June 18, 2007 10:31 PM
Subject: Re: REFLECTOR: Pitch trim
Chris,
Define "considerable". ? second? 3 seconds? My elevator moves up or
down the instant (less than a ? second) I press the button.
Darrell
-----Original Message-----
From: reflector-bounces at tvbf.org [mailto:reflector-bounces at tvbf.org] On
Behalf Of Christopher Barber
Sent: Monday, June 18, 2007 10:00 PM
To: Velocity Aircraft Owners and Builders list
Subject: REFLECTOR: Pitch trim
I wired up the pitch trim tonight and noticed there is considerable lag
between when I activate the swith/motor and the trim spring/elevator
actually start moving. Is this normal? Is there a way to adjust this.
What, praytell, am I missing this time. Thanks.
All the best,
Chris
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Message: 4
Date: Tue, 19 Jun 2007 04:04:09 -0400
From: "Scott Baker" <sbakr at comcast.net>
Subject: Re: REFLECTOR: [SPAM] Re: Pitch trim
To: "Velocity Aircraft Owners and Builders list" <reflector at tvbf.org>
Message-ID: <002401c7b248$6ad80580$0301a8c0 at DADDESKTOP>
Content-Type: text/plain; charset="iso-8859-1"
The linear actuator that powers the pitch trim should react instantly to
the application of power (forward or back).
The bolts and mounting connections between the pitch trim servo, pitch
trim spring, and elevator should have no slack.
The elevators should have complete freedom of movement - no binding at the
hinges, no binding at the canard wing tips, no binding against the
fuselage sides, and no binding on the underside of the canard.
The bottom line ... during ground test ops, there should be little to no
lag between when the pitch trim command switch is pressed - to when motion
is observed in the pitch trim actuator.
Is the pitch trim system hooked up through a relay? Is everything okay
there (i.e. it's not a relay with a time delay)?
SB
----- Original Message -----
From: Christopher Barber
To: Velocity Aircraft Owners and Builders list
Sent: Tuesday, June 19, 2007 12:15 AM
Subject: [SPAM] Re: REFLECTOR: Pitch trim
3 seconds, maybe more. I will try to remember to time it on the morrow
(or even tomorrow <g>). I hope to spend the day at the hangar. Thanks.
All the best,
Chris
----- Original Message -----
From: Darrell & Nora Kufalk
To: 'Velocity Aircraft Owners and Builders list'
Sent: Monday, June 18, 2007 10:31 PM
Subject: Re: REFLECTOR: Pitch trim
Chris,
Define "considerable". ? second? 3 seconds? My elevator moves up or
down the instant (less than a ? second) I press the button.
Darrell
-----Original Message-----
From: reflector-bounces at tvbf.org [mailto:reflector-bounces at tvbf.org] On
Behalf Of Christopher Barber
Sent: Monday, June 18, 2007 10:00 PM
To: Velocity Aircraft Owners and Builders list
Subject: REFLECTOR: Pitch trim
I wired up the pitch trim tonight and noticed there is considerable lag
between when I activate the swith/motor and the trim spring/elevator
actually start moving. Is this normal? Is there a way to adjust this.
What, praytell, am I missing this time. Thanks.
All the best,
Chris
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