X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from qmta01.emeryville.ca.mail.comcast.net ([76.96.30.16] verified) by logan.com (CommuniGate Pro SMTP 5.4.6) with ESMTP id 5652752 for flyrotary@lancaironline.net; Sun, 15 Jul 2012 13:47:25 -0400 Received-SPF: pass receiver=logan.com; client-ip=76.96.30.16; envelope-from=hoursaway1@comcast.net Received: from omta12.emeryville.ca.mail.comcast.net ([76.96.30.44]) by qmta01.emeryville.ca.mail.comcast.net with comcast id ahbD1j0090x6nqcA1hmrx3; Sun, 15 Jul 2012 17:46:51 +0000 Received: from sz0081.ev.mail.comcast.net ([76.96.26.137]) by omta12.emeryville.ca.mail.comcast.net with comcast id ahmq1j00F2xV6SL8Yhmqfr; Sun, 15 Jul 2012 17:46:50 +0000 Date: Sun, 15 Jul 2012 17:46:49 +0000 (UTC) From: hoursaway1@comcast.net To: Rotary motors in aircraft Message-ID: <1247649186.1275434.1342374409113.JavaMail.root@sz0081a.emeryville.ca.mail.comcast.net> In-Reply-To: Subject: Re: [FlyRotary] Prop leading edge tape MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_Part_1275433_629169509.1342374409112" X-Originating-IP: [71.206.108.115] X-Mailer: Zimbra 6.0.13_GA_2944 (ZimbraWebClient - IE8 (Win)/6.0.13_GA_2944) ------=_Part_1275433_629169509.1342374409112 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Chris, the instructor I used for transision training to the RV6A =C2=A0from= a Cherokee 6=C2=A0 built an RV7A with a Subie eng. & Ivo Prop, we had to r= eplace one of his leading edge SS tapes before our fourth hr. flight sortee= , was working it's way to the end of the blade, after sticking onto blade w= e did use the superglue ( he had not superglued his edge before ) along the= outer edges of the tape to seal & smooth the edge of tape to the blade, it= takes a couple of coats to create a ramp type smoothing to the blade & a g= ood sealing affect of the tape edge. Be very mindfull of the pointy part al= ong the leading edge of the blade that points to the hub, this is where the= air can get under & attempt to lift the tape from the blade that starts th= e proccess of coming apart ( tape from blade ).=C2=A0 David R. Cook=C2=A0 R= V6A Rotary 23.5 hrs. =C2=A0=20 ----- Original Message ----- From: "Chris Barber" =20 To: "Rotary motors in aircraft" =20 Sent: Sunday, July 15, 2012 10:58:45 AM=20 Subject: [FlyRotary] Prop leading edge tape=20 I had my forth flight yesterday.=C2=A0 I am still just circling the field.= =C2=A0 Everything was going well. Temps and pressures were all well in the = green and I was "playing' (ok, a=C2=A0kinda cavalier term for testing) with= prop pitch , trim and power settings when I suddenly felt a distinct, slig= ht to moderate vibration coming from the rear of the plane.=C2=A0 I called = the tower and with calm winds was cleared for any runway.=C2=A0 I did a tig= ht right turn to 22 and landed.=C2=A0 Has it been mentioned that these cana= rds really don't want to land...I floated quite a bit down the runway...got= ta not try to bleed off speed by slightly lifting the nose.....damned bad C= essna habits ;-)=20 =C2=A0=20 Anyway, I landed=C2=A0and =C2=A0taxied back to the hangar, the vibration ha= d stopped.=C2=A0 I got out and did my quick inspection and it was=C2=A0imme= diately obvious that one of the prop leading edge tapes had departed the cr= aft and another was starting to tear off.=C2=A0 Well, at least it seems I q= uickly discovered the problem...kinda what testing is all about.=20 =C2=A0=20 This is an=C2=A0IVO in flight adjustable prop on my Velocity.=C2=A0 I have = been using the stainless steel prop tape as provided by IVO .=C2=A0 I used = the same tape during ground testing, but replaced it all just before first = flight.=C2=A0 Interestingly, it was pretty difficult to get off...as in it = required quite a bit of force.=C2=A0 I did have some issue with the tape=C2= =A0un-attaching a bit during ground testing at the edges but had hoped it w= ould be okay once I replaced it and secured it better.=20 =C2=A0=20 IVO=C2=A0has an online video showing how to install.=C2=A0 It is quite stra= ight forward, but I did note they now add some superglue to the edges of th= e tape.=C2=A0 I do not recall that being a part of it when I got the prop, = however, I did see the video before the latest tape replacement and I DID a= dd the superglue to the leading edge.=C2=A0 I also was very=C2=A0thorough w= hen cleaning the prop before adding the tape....I think I used Acetone for = this step.=20 =C2=A0=20 Anyway, I have not had success with=C2=A0the method in the video. I was thi= nking of masking off the prop except where the tape goes and applying some = of the 3M Super 77 (I think it is the 77...red can) to attach the tape.=C2= =A0 I had good success with this when sticking sandpaper to long I-beams fo= r sanding my wings, needing heat to=C2=A0ultimatley removing it...alas, san= ding blocks and props are two different creatures .=20 =C2=A0=20 So? What say ye?=C2=A0 Ideas, comments etc.=C2=A0 I had one person mention = that they don't like the tape but understand its use to help protect the pr= op.=C2=A0 Do we know if it is doing more than protecting from minor=C2=A0fo= d and, I guess rain??=20 =C2=A0=20 Thanks in advance folks.=20 =C2=A0=20 Chris ------=_Part_1275433_629169509.1342374409112 Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: quoted-printable <= div style=3D'font-family: Arial; font-size: 12pt; color: #000000'>Chris, th= e instructor I used for transision training to the RV6A from a Cheroke= e 6  built an RV7A with a Subie eng. & Ivo Prop, we had to replace= one of his leading edge SS tapes before our fourth hr. flight sortee, was = working it's way to the end of the blade, after sticking onto blade we did = use the superglue ( he had not superglued his edge before ) along the outer= edges of the tape to seal & smooth the edge of tape to the blade, it t= akes a couple of coats to create a ramp type smoothing to the blade & a= good sealing affect of the tape edge. Be very mindfull of the pointy part = along the leading edge of the blade that points to the hub, this is where t= he air can get under & attempt to lift the tape from the blade that sta= rts the proccess of coming apart ( tape from blade ).  David R. Cook&n= bsp; RV6A Rotary 23.5 hrs. 

From: "Chris Barber" <cbarber@texasattorney.net>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Sent= : Sunday, July 15, 2012 10:58:45 AM
Subject: [FlyRotary] Prop= leading edge tape

I had my forth flight yesterday.  I am still just circling the fiel= d.  Everything was going well. Temps and pressures were all well in th= e green and I was "playing' (ok, a kinda cavalier term f= or testing) with prop pitch, trim and power settings when I suddenly= felt a distinct, slight to moderate vibration coming from the rear of the = plane.  I called the tower and with calm winds was cleared for any run= way.  I did a tight right turn to 22 and landed.  Has it been men= tioned that these canards really don't want to land...I floated quite a bit= down the runway...gotta not try to bleed off speed by slight= ly lifting the nose.....damned bad Cessna habits ;-)

 

Anyway, I landed and taxied back to the hangar, = the vibration had stopped.  I got out and did my quick inspection and = it was immediately obvious that one of the prop leading edge ta= pes had departed the craft and another was starting to tear off.  Well= , at least it seems I quickly discovered the problem...kinda = what testing is all about.

 

This is an IVO in flight adjustable prop on my Veloci= ty.  I have been using the stainless steel prop tape as provided by IV= O.  I used the same tape during ground testing, but repl= aced it all just before first flight.  Interestingly, it was pretty di= fficult to get off...as in it required quite a bit of force.  I did ha= ve some issue with the tape un-attaching a bit during ground te= sting at the edges but had hoped it would be okay once I replaced it and se= cured it better.

 

IVO has an online video showing how to install. = It is quite straight forward, but I did note they now add some superglue t= o the edges of the tape.  I do not recall that being a part of it when= I got the prop, however, I did see the video before the latest tape replac= ement and I DID add the superglue to the leading edge.  I also was ver= y thorough when cleaning the prop before adding the tape....I t= hink I used Acetone for this step.

 

Anyway, I have not had success with the method in the video. I was = thinking of masking off the prop except where the tape goes and applying so= me of the 3M Super 77 (I think it is the 77...red can) to attach the tape.&= nbsp; I had good success with this when sticking sandpaper to long I-beams = for sanding my wings, needing heat to ultimatley removing it...= alas, sanding blocks and props are two different creatures.

 

So? What say ye?  Ideas, comments etc.  I had one person menti= on that they don't like the tape but understand its use to help protect the= prop.  Do we know if it is doing more than protecting from minor = ;fod and, I guess rain??

 

Thanks in advance folks.

 

Chris

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