X-Junk-Score: 0 [] X-Cloudmark-Score: 0 [] X-Cloudmark-Analysis: v=2.3 cv=RZTu9Glv c=1 sm=1 tr=0 a=UZBReMFAb/XnTJ6n9KjCdA==:117 a=x7bEGLp0ZPQA:10 a=oSMvVwY2MYMA:10 a=nTHF0DUjJn0A:10 a=pGLkceISAAAA:8 a=Ia-xEzejAAAA:8 a=5kgCHx-JAAAA:8 a=HZJGGiqLAAAA:8 a=C_IRinGWAAAA:8 a=FgnkQjDcQEwravx-oLYA:9 a=QEXdDO2ut3YA:10 a=EIp9Qn7mad9uQHGnNmMA:9 a=eZigBhHyGOaHs6Ij:21 a=Urk15JJjZg1Xo0ryW_k8:22 a=r8ZRCeaX8sBb4OpKaTiC:22 From: "David Leonard wdleonard@gmail.com" Received: from mail-qk1-f174.google.com ([209.85.222.174] verified) by logan.com (CommuniGate Pro SMTP 6.2.14) with ESMTPS id 397260 for flyrotary@lancaironline.net; Sat, 20 Jun 2020 19:01:09 -0400 Received-SPF: pass receiver=logan.com; client-ip=209.85.222.174; envelope-from=wdleonard@gmail.com Received: by mail-qk1-f174.google.com with SMTP id b4so12425355qkn.11 for ; Sat, 20 Jun 2020 16:01:10 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to; bh=YWTUubPA2YweFzhyKSa2ZkU443hzWtgVZVFIV/UjrsI=; b=j1D1s4F77lJaOySySHwsnw/dJ+CG4ghRVepYsIE89dYMO8ZfrRcku/L0gqjLsIxHN6 plxuF0AP6SOwmP/FqMUFMKdMAv8FsM2Z1n3YSxN6j105ZSFfFKELIthXVkfnu4vpxrWl K5KO3itocEiv28lHZljAd/UMjK5KEQHIKVVbNPEhVo+3xpgl8PsdhGduvRv/v5ikGJNb 7BjUn9cswauFQNrOQC1wB8nOQ4pDwS8iAzPf4PDa99RzedrxyHukYRsgecAaTcdDVJkG CPGk6qkUP6cgnUMsLMsBhR5U2fSt6Mryjv4vsq5HU55w8m2oMXOynlz+McAP0Xq7ENN/ rl/w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to; bh=YWTUubPA2YweFzhyKSa2ZkU443hzWtgVZVFIV/UjrsI=; b=iPkDvT9ebQ9si1xFJOkM3dYgZl49Wi/75s3QWeJx1XquKAZyMGkfKRd2jUGWwU/uv7 azZDFKoDmPLaLNH7K8Dwfzzw7Z3+bMtiDrdnme81pPhNBl7/fC6Oc1GCQvXjdfnrZ0QC sAmvgEKZaHneLKYFqfFhLh46uQEAI6wzr6B94Y159GFC946W7vYYT9xdAn499mlNF9yq IukR2tE/qjNIYojvMmPO89VT68iyGsiFt52oWAoy/JBSDElLxMFAaa+Tbi5tDkkBukk1 NXRHehU9/r5dF4B7PTo73L0FwXR/arSsiqOzLsqSDCo/lwq9dVYAL6jL3AOb8p8rECJQ tkpg== X-Gm-Message-State: AOAM532SZAj6fBo4q9T0zzV2nxBYGZrVUAgcYP9gSc2wJHJIvXP/R77J TV8sjT+tDUNJw2h4TZLzv3UDDRkx4D3Cra5G42SJMCDF X-Google-Smtp-Source: ABdhPJx6pRIufmyNdOkVmLvCNCsofGHfFGqiQyZpzpKHdnh3/8eOuj62sycZyGmBFaFtf2swWDDYRyI/siw42rdFNKE= X-Received: by 2002:a37:90c:: with SMTP id 12mr9501552qkj.96.1592694052689; Sat, 20 Jun 2020 16:00:52 -0700 (PDT) MIME-Version: 1.0 References: In-Reply-To: Date: Sat, 20 Jun 2020 16:00:40 -0700 Message-ID: Subject: Re: [FlyRotary] Re: Radiator Clamp Question To: Rotary motors in aircraft Content-Type: multipart/alternative; boundary="0000000000003f1a5c05a88bfb9c" --0000000000003f1a5c05a88bfb9c Content-Type: text/plain; charset="UTF-8" I agree about the oliker clamps. They make a nice fit but are often awkward to get the tool in place. I use AN fittings with SS braid hose for all the main oil and coolant hoses. Expensive but not compared to the overall cost of the project. I use worm clamps for the smaller hoses like overflow bottles etc. I have never had an issue with them loosening. Dave Leonard On Sat, Jun 20, 2020 at 2:16 PM Todd Bartrim bartrim@gmail.com < flyrotary@lancaironline.net> wrote: > I have in the past, used crimp style clamps and punch-lok clamps as I'm > not crazy over worm gear clamps, but I'm now fully back to using worm gear > clamps. I don't recommend punch-lok clamps as it requires a hammer strike > to set them and that just feels wrong. But the biggest argument in favour > of worm gear clamps is the ease of field repairs. Crimp clamps don't lend > themselves well to this. And in tight quarters, while it may be possible to > reach in with a tool to squeeze the clamp, it can sometimes be quite > difficult to have room to either twist off or cut the clamp off for removal. > Due to my nature of always changing and experimenting, this is a > definite advantage of worm gear clamps. Even if the install is intended to > be permanent in design, hoses can and do age, so at some point removing the > clamp is inevitable. > > Todd Bartrim > > > On Sat, Jun 20, 2020 at 1:08 PM Thomas Mann tmann@n200lz.com < > flyrotary@lancaironline.net> wrote: > >> Anybody try Oetiker crimp style clamps? >> Nothing to unscrew there. >> >> >> >> ------------------------------ >> *From*: "Ernest Christley echristley@att.net" < >> flyrotary@lancaironline.net> >> *Sent*: Saturday, June 20, 2020 12:23 PM >> *To*: "Rotary motors in aircraft" >> *Subject*: [FlyRotary] Re: Radiator Clamp Question >> >> >> Also, in the past, I have turned the screw so the slot is parallel to the >> hose, then wrapped safety wire through the slot, around the screw housing >> and under the threaded end of the screw. >> >> On Saturday, June 20, 2020, 12:33:30 PM EDT, David COOK >> hoursaway1@comcast.net wrote: >> >> >> If it's a worm clamp bend free end over screw, will not loosen. >> >> On 06/20/2020 12:23 PM Thomas Mann tmann@n200lz.com < >> flyrotary@lancaironline.net> wrote: >> >> >> Good Morning, >> >> Question for the group ... >> Has anyone experienced a clamp in the cooling system loosening over time >> due to vibration? >> Do you safety wire them? >> Use a particular type of clamp (such as Oetiker) to avoid this situation? >> >> What's the recommendation? >> >> T Mann >> >> >> --0000000000003f1a5c05a88bfb9c Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
I agree about the oliker clamps.=C2=A0 They make a nice fi= t but are often awkward to get the tool in place.

I use = AN fittings with SS braid hose for all the main oil and coolant hoses.=C2= =A0 Expensive but not compared to the overall cost of the project.=C2=A0 I = use worm clamps for the smaller hoses like overflow bottles etc.=C2=A0 I ha= ve never had an issue with them loosening.=C2=A0=C2=A0

=
Dave Leonard

On Sat, Jun 20, 2020 at 2:16 PM Todd Bartrim bartrim@gmail.com <flyrotary@lancaironline.net> wrote:
<= /div>
I h= ave in the past, used crimp style clamps and punch-lok clamps as I'm no= t crazy over worm gear clamps, but I'm now fully back to using worm gea= r clamps. I don't recommend punch-lok clamps as it requires a hammer st= rike to set them and that just feels wrong. But the biggest argument in fav= our of worm gear clamps is the ease of field repairs. Crimp clamps don'= t=C2=A0lend themselves well to this. And in tight quarters, while it may be= possible to reach in with a tool to squeeze the clamp, it can sometimes be= quite difficult to have room to either twist off or cut the clamp off for = removal.
=C2=A0 =C2=A0Due to my nature of always changing and experimen= ting, this is a definite=C2=A0advantage of worm gear clamps. Even if the in= stall is intended to be permanent in design, hoses can and do age, so at so= me point removing the clamp is inevitable.=C2=A0

Todd Bartrim

=

On Sat, Jun 20, 2020 at 1:08 PM Thomas Mann tmann@n200lz.com <flyrotary@lancaironline.net= > wrote:
Anyb= ody try=C2=A0Oetiker crimp style clamps?
Nothing to unscrew there.
=C2=A0
=C2=A0
=C2=A0
= From: "Ernest Christley echristley@att.net" <flyrotary@lancaironline.net> Sent: Saturday, June 20, 2020 12:23 PM
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net&= gt;
Subject: [FlyRotary] Re: Radiator Clamp Question
=C2=A0
=C2=A0
Also, in the past, I have turned the screw so the slot is = parallel to the hose, then wrapped safety wire through the slot, around the= screw housing and under the threaded end of the screw.
=C2=A0
On Saturday, June 20, 2020, 12:33:30 PM EDT, David COOK hoursaway1@comcast.net &l= t;flyrotar= y@lancaironline.net> wrote:
=C2=A0
=C2=A0
If it's a worm clamp bend free end over screw, will not loosen.=
On 06/20/2020 12:23 PM Thomas Mann tmann@n200lz.com <flyrotary@lancaironline.net> wrote= :
=C2=A0
=C2=A0
Good Morning,
=C2=A0
Question for the group ...
Has anyone experienced a clamp in the cooling system loosening over ti= me due to vibration?
Do you safety wire them?
Use a particular type of=C2=A0clamp (such as Oetiker) to avoid this si= tuation?
=C2=A0
What's the recommendation?
=C2=A0
T Mann
=C2=A0
--0000000000003f1a5c05a88bfb9c--