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Since there won't be significant air flow, the hole just needs to be "big
enough". All that moves is the volume of the displacement in the vacuum
chamber - a couple of ccs?
Having said that, a hole that's too small will introduce some lag into the
operation - but I would think anything over 3/32" or so would be plenty.
If you're curious, you can start here
https://www.grc.nasa.gov/www/k-12/airplane/bern.html
for the governing physics, and do a proper calculation. Have fun!
Jeff Scarbrough
Corrosion Acres, Ga.
On Tue, Mar 1, 2016 at 2:15 PM, anabil007 <anabil007@comcast.net> wrote:
> Preparing to install vacuum advance conversion on the TR6.
>
> I have checked the vacuum port on the rear Stromberg ,(1970 TR6), and it
> has no hole. What size hole? I am assuming the carb has to come off and
> apart to keep shavings from screwing things up, any ideas ???
>
> BTW had a hell of a time getting the old roll pin out, very, very stubbor=
n.
>
>
>
> "Life is too short to drive boring cars"
>
> Bill Pugh
> 1957 TR3 "Casper"=F0=9F=91=BB
> TS16765L
> Wallace, CA
> anabil007@comcast.net=F0=9F=90=94
>
>
>
> ** triumphs@autox.team.net **
>
> Donate: http://www.team.net/donate.html
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<div dir=3D"ltr">Since there won't be significant air flow, the hole ju=
st needs to be "big enough".=C2=A0 All that moves is the volume o=
f the displacement in the vacuum chamber - =C2=A0a couple of ccs?<div><br><=
/div><div>Having said that, a hole that's too small will introduce some=
lag into the operation - but I would think anything over 3/32" or so =
would be plenty.=C2=A0 If you're curious, you can start here=C2=A0</div=
><div><br></div><div><a href=3D"https://www.grc.nasa.gov/www/k-12/airplane/=
bern.html">https://www.grc.nasa.gov/www/k-12/airplane/bern.html</a></div><d=
iv>=C2=A0</div><div>for the governing physics, and do a proper calculation.=
=C2=A0 Have fun!<br></div><div><br></div><div>Jeff Scarbrough</div><div>Cor=
rosion Acres, Ga.</div></div><div class=3D"gmail_extra"><br><div class=3D"g=
mail_quote">On Tue, Mar 1, 2016 at 2:15 PM, anabil007 <span dir=3D"ltr"><=
;<a href=3D"mailto:anabil007@comcast.net"; target=3D"_blank">anabil007@comca=
st.net</a>></span> wrote:<br><blockquote class=3D"gmail_quote" style=3D"=
margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div style=
=3D"word-wrap:break-word"><div>Preparing to install vacuum advance conversi=
on on the TR6.</div><div><br></div>I have checked the vacuum port on the re=
ar Stromberg ,(1970 TR6), and it has no hole.=C2=A0 What size hole? I am as=
suming the carb has to come off and apart to keep shavings from screwing th=
ings up, any ideas ???<div><br></div><div>BTW had a hell of a time getting =
the old roll pin out, very, very stubborn.</div><div><br></div><div><br></d=
iv><div><br><div>
<div style=3D"color:rgb(0,0,0);font-family:Helvetica;font-style:normal;font=
-variant:normal;font-weight:normal;letter-spacing:normal;line-height:normal=
;text-align:-webkit-auto;text-indent:0px;text-transform:none;white-space:no=
rmal;word-spacing:0px;word-wrap:break-word"><span style=3D"border-collapse:=
separate;color:rgb(0,0,0);font-family:Helvetica;font-style:normal;font-vari=
ant:normal;font-weight:normal;letter-spacing:normal;line-height:normal;text=
-align:-webkit-auto;text-indent:0px;text-transform:none;white-space:normal;=
word-spacing:0px;border-spacing:0px"><div style=3D"word-wrap:break-word"><s=
pan style=3D"border-collapse:separate;color:rgb(0,0,0);font-family:Helvetic=
a;font-style:normal;font-variant:normal;font-weight:normal;letter-spacing:n=
ormal;line-height:normal;text-align:-webkit-auto;text-indent:0px;text-trans=
form:none;white-space:normal;word-spacing:0px;border-spacing:0px"><div styl=
e=3D"word-wrap:break-word">"Life is too short to drive boring cars&quo=
t;<br><br>Bill Pugh<br>1957 TR3 "Casper"=F0=9F=91=BB<br>TS16765L<=
br>Wallace, CA<br><a href=3D"mailto:anabil007@comcast.net"; target=3D"_blank=
">anabil007@comcast.net</a>=F0=9F=90=94</div></span></div></span></div>
</div>
<br></div></div><br><br>
** <a href=3D"mailto:triumphs@autox.team.net";>triumphs@autox.team.net</a> *=
*<br>
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et=3D"_blank">http://www.team.net/donate.html</a><br>
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eam.net/mailman/options/triumphs/fishplate@gmail.com</a><br>
<br></blockquote></div><br></div>
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