From: "William Jepson" <flyrotary@lancaironline.net>
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Date: Thu, 15 Jun 2017 12:26:50 -0700
Message-ID: <CAN=mtaduvJvAY1mX4OAsZbGg0mdXeJQ7paSkmS5vQ=1kq0sBLQ@mail.gmail.com>
Subject: Re: [FlyRotary] ceramic coating
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
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Todd, I haven't used the VHT coating, but I have used the Jet-Hot coatings.
They have performed great. They have a high-temp coating that will work for
rotaries. The wraps tend to cause corrosion since they seem to trap
condensation.
Bill Jepson

On Thu, Jun 15, 2017 at 12:21 PM, Todd Bartrim <flyrotary@lancaironline.net>
wrote:

> Has anybody tried using VHT Flameproof, ceramic coating ? It's rated up to
> 2000F intermittent.
> I've been running my engine with exhaust wraps and am very pleased with
> the reduction of under cowl temps but am aware of the concerns regarding
> longevity of the exhaust.
> As I'm very near to returning to the airport I want to address this and go
> with a ceramic coating.
> I have the ability and facilities to apply a proper ceramic coat, but it
> is difficult to source the material at a reasonable cost and timeframe.
>   I can ship it away and have it done for about the same price and less
> time. But I can also purchase VHT locally. While it comes in an aerosol
> can, it is not paint. It can be applied as simple as you would a paint, but
> for best results, proper cleaning, bead blasting and oven cure are
> required, not unlike the usual ceramic coats.
>   I always preferr to do things myself, but if anybody can say that this
> stuff is not up to the hype, then I'll consider shipping out the exhaust to
> have it done.
>   I have about a week of work to do where I want the exhaust in place, but
> then I'll be away for a week, during which time I can send it out.
>    Further to this, has anybody ever had their exhaust ceramic coated and
> then also wrapped it to provide even more heat reduction?
>
> Todd Bartrim
>  C-FSTB
> Turbo 13B RV9a
>

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<div dir=3D"ltr">Todd, I haven&#39;t used the VHT coating, but I have used =
the Jet-Hot coatings. They have performed great. They have a high-temp coat=
ing that will work for rotaries. The wraps tend to cause corrosion since th=
ey seem to trap condensation.<div>Bill Jepson</div></div><div class=3D"gmai=
l_extra"><br><div class=3D"gmail_quote">On Thu, Jun 15, 2017 at 12:21 PM, T=
odd Bartrim <span dir=3D"ltr">&lt;<a href=3D"mailto:flyrotary@lancaironline=
.net" target=3D"_blank">flyrotary@lancaironline.net</a>&gt;</span> wrote:<b=
r><blockquote class=3D"gmail_quote" style=3D"margin:0 0 0 .8ex;border-left:=
1px #ccc solid;padding-left:1ex"><div dir=3D"ltr"><div>Has anybody tried us=
ing VHT Flameproof, ceramic coating ? It&#39;s rated up to 2000F intermitte=
nt.</div><div>I&#39;ve been running my engine with exhaust wraps and am ver=
y pleased with the reduction of under cowl temps but am aware of the concer=
ns regarding longevity of the exhaust.</div><div>As I&#39;m very near to re=
turning to the airport I want to address this and go with a ceramic coating=
.</div><div>I have the ability and facilities to apply a proper ceramic coa=
t, but it is difficult to source the material at a reasonable cost and time=
frame.</div><div>=C2=A0 I can ship it away and have it done for about the s=
ame price and less time. But I can also purchase VHT locally. While it come=
s in an aerosol can, it is not paint. It can be applied as simple as you wo=
uld a paint, but for best results, proper cleaning, bead blasting and oven =
cure are required, not unlike the usual ceramic coats.</div><div>=C2=A0 I a=
lways preferr to do things myself, but if anybody can say that this stuff i=
s not up to the hype, then I&#39;ll consider shipping out the exhaust to ha=
ve it done.</div><div>=C2=A0 I have about a week of work to do where I want=
 the exhaust in place, but then I&#39;ll be away for a week, during which t=
ime I can send it out.</div><div>=C2=A0 =C2=A0Further to this, has anybody =
ever had their exhaust ceramic coated and then also wrapped it to provide e=
ven more heat reduction?</div><span class=3D"HOEnZb"><font color=3D"#888888=
"><br clear=3D"all"><div><div class=3D"m_-8006799879278187847gmail_signatur=
e" data-smartmail=3D"gmail_signature"><div dir=3D"ltr">Todd Bartrim</div><d=
iv>=C2=A0C-FSTB</div><div>Turbo 13B RV9a</div></div></div>
</font></span></div>
</blockquote></div><br></div>

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