Today's Message Index:
----------------------
1. 04:50 AM - Re: Parts (Ernie)
2. 06:59 AM - Czech (Mark Jefferies.)
3. 09:22 AM - Piston Clearence, Request for Information (Jim Bernier)
4. 09:43 AM - Re: Piston Clearence, Request for Information (Ernie)
5. 09:59 AM - Re: Piston Clearence, Request for Information (Jim Bernier)
6. 10:39 AM - Re: Piston Clearence, Request for Information (Ernie)
7. 10:47 AM - Hot Rod Huosai (cpayne@mc.net)
8. 11:09 AM - Re: Piston Clearence, Request for Information (Jim Bernier)
9. 11:22 AM - Re: Hot Rod Huosai (Jim Bernier)
10. 11:47 AM - Re: Hot Rod Huosai (Ernie)
11. 01:19 PM - Re: Hot Rod Huosai (Jim Bernier)
12. 02:22 PM - Re: More Hot Rod (Craig Payne)
13. 05:18 PM - Re: Piston Clearence, Request for Information (Frank Haertlein)
14. 05:32 PM - Re: Hot Rod Huosai (Frank Haertlein)
Message 1
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--> Yak-List message posted by: "Ernie" <ernest.martinez@oracle.com>
You're a prince!
Thanks
Ernie
----- Original Message -----
From: <Desmor944@aol.com>
Subject: Re: Yak-List: Parts
> --> Yak-List message posted by: Desmor944@aol.com
>
> Ernie
>
> I bought a standard Alemite Button Head Coupler (Grainger stock number
> 4ZT33-7 @ $12). A little work with a Dremmel tool to put a slight radius
on
> it to match the dome of the foreign fitting (US fittings are flat top) and
it
> works just fine. Comes with a zerk type connection so it just plugs into
the
> end of a standard grease gun.
>
> Rich Desmond
> N19CJ
>
>
Message 2
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--> Yak-List message posted by: "Mark Jefferies." <mark@yakuk.com>
Barry, UR about 10 years behind the times, Czechoslovakia does not exist as a country!!!
Its either Czech Republic or Slovakia. Its like calling an American,
Canadian or vice versa.
Its my experiences that Czechs make very good aircraft in these capitalist times,
you should see some of the certified a/c coming out of there in the last few
years. They are very good with glass and make some extremely good below 450
kg machines. I believe Hamilton standard bought Avia the propeller factory.
Mind you, you get poor homebuilders the world over so perhaps you may have seen
poor work from one of those.
>>They're made in Czechoslovakia, and the fit and finish are, uh, not
Best regards, Mark
Message 3
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| Subject: | Piston Clearence, Request for Information |
--> Yak-List message posted by: "Jim Bernier" <JBernier@dart.org>
I'm in the process of rebuilding my engine, Huosai 285 HP. I need to know the piston
to cylinder clearance. I'm getting 0.020 to 0.025 inches. Seems rather large.
What would be the clearance for US made radial engines?
I'm attempting to replace the stock pistons with good old USofA pistons. They are
lighter and stronger. I intent to increase compression and turn a slightly
higher RPM. Hot Rodding comes to China.
Jim Bernier
Message 4
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| Subject: | Re: Piston Clearence, Request for Information |
--> Yak-List message posted by: "Ernie" <ernest.martinez@oracle.com>
What US pistons fit the Housai?? Are you using the stock rods and same bore?
I'd like to know how well this works out.
Ernie
----- Original Message -----
From: "Jim Bernier" <JBernier@dart.org>
Subject: Yak-List: Piston Clearence, Request for Information
> --> Yak-List message posted by: "Jim Bernier" <JBernier@dart.org>
>
> I'm in the process of rebuilding my engine, Huosai 285 HP. I need to know
the piston to cylinder clearance. I'm getting 0.020 to 0.025 inches. Seems
rather large. What would be the clearance for US made radial engines?
> I'm attempting to replace the stock pistons with good old USofA pistons.
They are lighter and stronger. I intent to increase compression and turn a
slightly higher RPM. Hot Rodding comes to China.
> Jim Bernier
>
>
Message 5
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| Subject: | Re: Piston Clearence, Request for Information |
--> Yak-List message posted by: "Jim Bernier" <JBernier@dart.org>
I'm not certain that I can have pistons made, but JE Pistons out of California
agreed to work with me on a new set. I have requested pistons, rings, and pins.
They believe that they have forgings that can be cut to fit. But I first need
to know the diameter of the piston to be cut.
JimB
>>> ernest.martinez@oracle.com 12/20/02 11:42AM >>>
--> Yak-List message posted by: "Ernie" <ernest.martinez@oracle.com>
What US pistons fit the Housai?? Are you using the stock rods and same bore?
I'd like to know how well this works out.
Ernie
----- Original Message -----
From: "Jim Bernier" <JBernier@dart.org>
Subject: Yak-List: Piston Clearence, Request for Information
> --> Yak-List message posted by: "Jim Bernier" <JBernier@dart.org>
>
> I'm in the process of rebuilding my engine, Huosai 285 HP. I need to know
the piston to cylinder clearance. I'm getting 0.020 to 0.025 inches. Seems
rather large. What would be the clearance for US made radial engines?
> I'm attempting to replace the stock pistons with good old USofA pistons.
They are lighter and stronger. I intent to increase compression and turn a
slightly higher RPM. Hot Rodding comes to China.
> Jim Bernier
>
>
Message 6
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| Subject: | Re: Piston Clearence, Request for Information |
--> Yak-List message posted by: "Ernie" <ernest.martinez@oracle.com>
I have spare pistons and rings I can measure them if you like
Ernie
----- Original Message -----
From: "Jim Bernier" <JBernier@dart.org>
Subject: Re: Yak-List: Piston Clearence, Request for Information
> --> Yak-List message posted by: "Jim Bernier" <JBernier@dart.org>
>
> I'm not certain that I can have pistons made, but JE Pistons out of
California agreed to work with me on a new set. I have requested pistons,
rings, and pins. They believe that they have forgings that can be cut to
fit. But I first need to know the diameter of the piston to be cut.
> JimB
>
> >>> ernest.martinez@oracle.com 12/20/02 11:42AM >>>
> --> Yak-List message posted by: "Ernie" <ernest.martinez@oracle.com>
>
> What US pistons fit the Housai?? Are you using the stock rods and same
bore?
> I'd like to know how well this works out.
>
> Ernie
> ----- Original Message -----
> From: "Jim Bernier" <JBernier@dart.org>
> To: "<" <yak-list@matronics.com>
> Subject: Yak-List: Piston Clearence, Request for Information
>
>
> > --> Yak-List message posted by: "Jim Bernier" <JBernier@dart.org>
> >
> > I'm in the process of rebuilding my engine, Huosai 285 HP. I need to
know
> the piston to cylinder clearance. I'm getting 0.020 to 0.025 inches. Seems
> rather large. What would be the clearance for US made radial engines?
> > I'm attempting to replace the stock pistons with good old USofA pistons.
> They are lighter and stronger. I intent to increase compression and turn a
> slightly higher RPM. Hot Rodding comes to China.
> > Jim Bernier
> >
> >
>
>
Message 7
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--> Yak-List message posted by: cpayne@mc.net
Jim,
Just curious, do you intend to install pistons with valve pocket cutouts
in order to raise compression? Chevy big block I would guess. As an
experiment, I changed the blade and governor settings on the Huosai, as
well as advancing timing and building a ram air box out of the inlet.
I was *amazed* at the top end speed, that's what led me towards the
M-14P. That's when I found some real speed.
In a drag race off the runway, I wumped a Seneca but good, taching 2600
rpm and he never could build enough speed (down low) to catch me. And
that was with the Huosai. BTW, I changed the settings back to stock AFTER
the race so as not to overstress the engine any more.
Craig Payne
--> Yak-List message posted by: "Jim Bernier" <JBernier@dart.org>
I'm in the process of rebuilding my engine, Huosai 285 HP. I need to know the piston
to cylinder clearance. I'm getting 0.020 to 0.025 inches. Seems rather large.
What would be the clearance for US made radial engines?
I'm attempting to replace the stock pistons with good old USofA pistons. They are
lighter and stronger. I intent to increase compression and turn a slightly
higher RPM. Hot Rodding comes to China.
Jim Bernier
Message 8
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| Subject: | Re: Piston Clearence, Request for Information |
--> Yak-List message posted by: "Jim Bernier" <JBernier@dart.org>
No need to measure yours. I have 30 cylinders sitting around and 24 pistons. But
thanks anyway.
Jim
>>> ernest.martinez@oracle.com 12/20/02 12:36PM >>>
--> Yak-List message posted by: "Ernie" <ernest.martinez@oracle.com>
I have spare pistons and rings I can measure them if you like
Ernie
----- Original Message -----
From: "Jim Bernier" <JBernier@dart.org>
Subject: Re: Yak-List: Piston Clearence, Request for Information
> --> Yak-List message posted by: "Jim Bernier" <JBernier@dart.org>
>
> I'm not certain that I can have pistons made, but JE Pistons out of
California agreed to work with me on a new set. I have requested pistons,
rings, and pins. They believe that they have forgings that can be cut to
fit. But I first need to know the diameter of the piston to be cut.
> JimB
>
> >>> ernest.martinez@oracle.com 12/20/02 11:42AM >>>
> --> Yak-List message posted by: "Ernie" <ernest.martinez@oracle.com>
>
> What US pistons fit the Housai?? Are you using the stock rods and same
bore?
> I'd like to know how well this works out.
>
> Ernie
> ----- Original Message -----
> From: "Jim Bernier" <JBernier@dart.org>
> To: "<" <yak-list@matronics.com>
> Subject: Yak-List: Piston Clearence, Request for Information
>
>
> > --> Yak-List message posted by: "Jim Bernier" <JBernier@dart.org>
> >
> > I'm in the process of rebuilding my engine, Huosai 285 HP. I need to
know
> the piston to cylinder clearance. I'm getting 0.020 to 0.025 inches. Seems
> rather large. What would be the clearance for US made radial engines?
> > I'm attempting to replace the stock pistons with good old USofA pistons.
> They are lighter and stronger. I intent to increase compression and turn a
> slightly higher RPM. Hot Rodding comes to China.
> > Jim Bernier
> >
> >
>
>
Message 9
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| Subject: | Re: Hot Rod Huosai |
--> Yak-List message posted by: "Jim Bernier" <JBernier@dart.org>
Craig,
The stock pistons already have pockets. I intend to use Chrysler hemi pistons.
I order to raise the compression from 5.9 or 6.0 to 7.5 I need to decrease the
combustion area from 13.777 ci to 11.022 ci. The best configuration is up to
JE Pistons.
It's good to see I'm not alone in believing that the Huosai is under powered.
With the light weight pistons I should be able to keep the 285 at 2600 RPM. What
does the M14P turn, 2900? Only with lighter pistons and stronger rods.
Jim
>>> cpayne@mc.net 12/20/02 12:49PM >>>
--> Yak-List message posted by: cpayne@mc.net
Jim,
Just curious, do you intend to install pistons with valve pocket cutouts
in order to raise compression? Chevy big block I would guess. As an
experiment, I changed the blade and governor settings on the Huosai, as
well as advancing timing and building a ram air box out of the inlet.
I was *amazed* at the top end speed, that's what led me towards the
M-14P. That's when I found some real speed.
In a drag race off the runway, I wumped a Seneca but good, taching 2600
rpm and he never could build enough speed (down low) to catch me. And
that was with the Huosai. BTW, I changed the settings back to stock AFTER
the race so as not to overstress the engine any more.
Craig Payne
--> Yak-List message posted by: "Jim Bernier" <JBernier@dart.org>
I'm in the process of rebuilding my engine, Huosai 285 HP. I need to know the piston
to cylinder clearance. I'm getting 0.020 to 0.025 inches. Seems rather large.
What would be the clearance for US made radial engines?
I'm attempting to replace the stock pistons with good old USofA pistons. They are
lighter and stronger. I intent to increase compression and turn a slightly
higher RPM. Hot Rodding comes to China.
Jim Bernier
Message 10
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| Subject: | Re: Hot Rod Huosai |
--> Yak-List message posted by: "Ernie" <ernest.martinez@oracle.com>
Isnt there a way to increase the supercharger boost pressure as a simple way
to gain power? I think I asked this before but what are the major
differences between the M-14 and the Housai?
Jim,
Do you overhaul the Housai engines?? I was always wondering what I'd do once
I got this engine to TBO. I have a 0 time New engine on the side, but I'd
hate to just scrap the old engine. By the way, what IS the TBO on the
Housai?
Ernie
----- Original Message -----
From: <cpayne@mc.net>
Subject: Yak-List: Hot Rod Huosai
> --> Yak-List message posted by: cpayne@mc.net
>
> Jim,
>
> Just curious, do you intend to install pistons with valve pocket cutouts
> in order to raise compression? Chevy big block I would guess. As an
> experiment, I changed the blade and governor settings on the Huosai, as
> well as advancing timing and building a ram air box out of the inlet.
> I was *amazed* at the top end speed, that's what led me towards the
> M-14P. That's when I found some real speed.
>
> In a drag race off the runway, I wumped a Seneca but good, taching 2600
> rpm and he never could build enough speed (down low) to catch me. And
> that was with the Huosai. BTW, I changed the settings back to stock AFTER
> the race so as not to overstress the engine any more.
>
> Craig Payne
>
> --> Yak-List message posted by: "Jim Bernier" <JBernier@dart.org>
>
> I'm in the process of rebuilding my engine, Huosai 285 HP. I need to know
the piston to cylinder clearance. I'm getting 0.020 to 0.025 inches. Seems
rather large. What would be the clearance for US made radial engines?
> I'm attempting to replace the stock pistons with good old USofA pistons.
They are lighter and stronger. I intent to increase compression and turn a
slightly higher RPM. Hot Rodding comes to China.
> Jim Bernier
>
>
Message 11
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| Subject: | Re: Hot Rod Huosai |
--> Yak-List message posted by: "Jim Bernier" <JBernier@dart.org>
Huosai engine TBO. I have heard of them running over 2000 hours.
The top end is an easy fix. It's the case with crank that becomes the problem.
Someday I'll be there and may refuse to let the core go. Then I'll work on the
bearings, crank and rods. If you have never had one of these engines apart it
is a simple work of art. Simple because it is. The ball bearings on the crank
are huge. Everything is over designed. I LIKE IT. Easy to work on and strong
like bull.
I only work on my own. Less liability that way.
By the time you change out engines, I'll know whether or not the HOT ROD will work.
The M14P has many modifications to it in relation to the Huosai. It turns 2900
RPM, so I'm told. That takes stronger and lighter internals. More air is required,
so more fuel is needed, larger carb. or more boost, heavy duty supercharger.
Just getting the supercharger won't get it there.
Remember, HP torque x RPM. Just spin it faster gets you there. Until you float
the valves.
JImB
>>> ernest.martinez@oracle.com 12/20/02 01:46PM >>>
--> Yak-List message posted by: "Ernie" <ernest.martinez@oracle.com>
Isnt there a way to increase the supercharger boost pressure as a simple way
to gain power? I think I asked this before but what are the major
differences between the M-14 and the Housai?
Jim,
Do you overhaul the Housai engines?? I was always wondering what I'd do once
I got this engine to TBO. I have a 0 time New engine on the side, but I'd
hate to just scrap the old engine. By the way, what IS the TBO on the
Housai?
Ernie
----- Original Message -----
From: <cpayne@mc.net>
Subject: Yak-List: Hot Rod Huosai
> --> Yak-List message posted by: cpayne@mc.net
>
> Jim,
>
> Just curious, do you intend to install pistons with valve pocket cutouts
> in order to raise compression? Chevy big block I would guess. As an
> experiment, I changed the blade and governor settings on the Huosai, as
> well as advancing timing and building a ram air box out of the inlet.
> I was *amazed* at the top end speed, that's what led me towards the
> M-14P. That's when I found some real speed.
>
> In a drag race off the runway, I wumped a Seneca but good, taching 2600
> rpm and he never could build enough speed (down low) to catch me. And
> that was with the Huosai. BTW, I changed the settings back to stock AFTER
> the race so as not to overstress the engine any more.
>
> Craig Payne
>
> --> Yak-List message posted by: "Jim Bernier" <JBernier@dart.org>
>
> I'm in the process of rebuilding my engine, Huosai 285 HP. I need to know
the piston to cylinder clearance. I'm getting 0.020 to 0.025 inches. Seems
rather large. What would be the clearance for US made radial engines?
> I'm attempting to replace the stock pistons with good old USofA pistons.
They are lighter and stronger. I intent to increase compression and turn a
slightly higher RPM. Hot Rodding comes to China.
> Jim Bernier
>
>
Message 12
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| Subject: | Re: More Hot Rod |
--> Yak-List message posted by: Craig Payne <cpayne@mc.net>
Jim,
Yep, I've had my Huosai pistons, & valves out. The valves are even cut
with 3 angles for the "tulip" effect. I also shimmed the valve springs
to add tension and reduce float at higher RPM.
Now that I have played with a couple of M-14P's, they have a heavier
case and are good candidates for hop-up. The Sukhoi guys have pulled
over 450hp on 100LL, and 550hp with nitrous injection!
"Some guys" are even mounting the M-14B nose case with spline shaft so
that the Russian metal prop fits.
I may just *play* a bit with my old M-14P one of these days. Keep me in
the loop on your progress with the Huosai.
Craig Payne
Jim Bernier wrote:
>
> --> Yak-List message posted by: "Jim Bernier" <JBernier@dart.org>
>
> Craig,
> The stock pistons already have pockets. I intend to use Chrysler hemi pistons.
I order to raise the compression from 5.9 or 6.0 to 7.5 I need to decrease the
combustion area from 13.777 ci to 11.022 ci. The best configuration is up to
JE Pistons.
> It's good to see I'm not alone in believing that the Huosai is under powered.
> With the light weight pistons I should be able to keep the 285 at 2600 RPM. What
does the M14P turn, 2900? Only with lighter pistons and stronger rods.
> Jim
>
> >>> cpayne@mc.net 12/20/02 12:49PM >>>
> --> Yak-List message posted by: cpayne@mc.net
>
> Jim,
>
> Just curious, do you intend to install pistons with valve pocket cutouts
> in order to raise compression? Chevy big block I would guess. As an
> experiment, I changed the blade and governor settings on the Huosai, as
> well as advancing timing and building a ram air box out of the inlet.
> I was *amazed* at the top end speed, that's what led me towards the
> M-14P. That's when I found some real speed.
>
> In a drag race off the runway, I wumped a Seneca but good, taching 2600
> rpm and he never could build enough speed (down low) to catch me. And
> that was with the Huosai. BTW, I changed the settings back to stock AFTER
> the race so as not to overstress the engine any more.
>
> Craig Payne
=============================================================
Message 13
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| Subject: | Piston Clearence, Request for Information |
--> Yak-List message posted by: "Frank Haertlein" <yak52driver@earthlink.net>
Ernie;
Check out Ross Custom Racing Pistons at http://www.rosspistons.com They
will make pistons to your specifications. They can even do the design
for you. They'd need to know bore and stroke then they can give you the
desired compression ratio. Call em up and talk to em'. Don't forget to
tell them it's an experimental engine or they may not work with you when
you tell them it's an aircraft engine.
Frank
911OM
-----Original Message-----
From: owner-yak-list-server@matronics.com
[mailto:owner-yak-list-server@matronics.com] On Behalf Of Ernie
Subject: Re: Yak-List: Piston Clearence, Request for Information
--> Yak-List message posted by: "Ernie" <ernest.martinez@oracle.com>
What US pistons fit the Housai?? Are you using the stock rods and same
bore? I'd like to know how well this works out.
Ernie
----- Original Message -----
From: "Jim Bernier" <JBernier@dart.org>
Subject: Yak-List: Piston Clearence, Request for Information
> --> Yak-List message posted by: "Jim Bernier" <JBernier@dart.org>
>
> I'm in the process of rebuilding my engine, Huosai 285 HP. I need to
> know
the piston to cylinder clearance. I'm getting 0.020 to 0.025 inches.
Seems rather large. What would be the clearance for US made radial
engines?
> I'm attempting to replace the stock pistons with good old USofA
> pistons.
They are lighter and stronger. I intent to increase compression and turn
a slightly higher RPM. Hot Rodding comes to China.
> Jim Bernier
>
>
=
direct advertising on the Matronics Forums.
Message 14
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--> Yak-List message posted by: "Frank Haertlein" <yak52driver@earthlink.net>
Ernie;
Don't forget to tell them it's an air cooled engine. They require
slightly larger clearances because of the greater expansion and
contraction of the cylinders. I wonder how balance will be affected due
the lighter and stronger pistons?
Frank
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