|
Well, seemed to have lost the formating on the last
message regarding whether the compressor map was a match for the Mazda
turbo.
Here it is again
|
ratio |
Boost psi |
l bm |
CFM |
RPM |
|
1.5 |
7.35 |
10 |
87.7193 |
1894. |
|
1.7 |
10.29 |
20 |
175.4386 |
3789. |
|
1.8 |
11.76 |
26 |
228.0702 |
4926. |
Ed Anderson
RV-6A N494BW Rotary
Powered
Matthews, NC
----- Original Message -----
Sent: Friday, July 09, 2004 5:57 PM
Subject: [FlyRotary] Re: Turbo post
mortem
>
> It well might be. Taking that flow chart and
trying to back engineer the
> engine operating parameters here is what I
get
>
>
ratio
>
Boost psi
>
lbm
> CFM
>
RPM
>
>
1.5
> 7.35
>
10
> 87.7193
>
1894.736842
>
>
1.7
>
10.29
> 20
>
175.4386
> 3789.473684
>
>
1.8
>
11.76
> 26
>
228.0702
> 4926.315789
>
>
>
as possible operating parameters for the RX-7 engine (single turbo pre
1993
> Rx-7). We know throught SAE papers that the Mazda
engineers tailored the
> post 1987 turbos to boost performance at the
lower rpms. So this might well
> be a close match to the compressor
map for the Ht 18. Do these boost rpm
> parameters look close to any of
your turbo Rx-7 drivers with models between
> 1987 and 1993????
Looks like you would get lots of boost at fairly low
> rpms with
this turbo on a rotary.
>
>
> Ed Anderson
>
>
> > A discussion of john's turbo failure, along with pictures, is
occurring at
> >
> > http://canardaviationforum.dmt.net/showthread.php?t=5
> >
> > I thought to mention to this group that
I have been told the Hitachi ht-18
> > (john's)turbo is very close to a
garret t3 50 trim.
> >
> > Can any one verify or rebut
this?
> >
> > I include a copy of the compressor map for your
edification.
> >
> >
>
>
>
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