Today's Message Index:
----------------------
1. 01:00 AM - Re: Engines-List Digest: / Bearomgs (Jerry Reynolds)
2. 08:39 AM - Re: Re: Engines-List Digest: / Bearomgs (James R. Cunningham)
3. 08:48 AM - Re: Engine source. (Terry Watson)
4. 09:00 AM - Re: Re: Engines-List Digest: / Bearomgs (Tedd McHenry)
5. 10:14 AM - Re: Re: Engines-List Digest: / Bearomgs (James R. Cunningham)
6. 12:16 PM - Re: Re: Engines-List Digest: / Bearomgs (Tedd McHenry)
7. 02:32 PM - Re: Re: Engines-List Digest: / Bearomgs (James R. Cunningham)
8. 04:31 PM - Re: Re: Engines-List Digest: / Bearomgs (Tedd McHenry)
9. 07:15 PM - Re: Engine source. (kc)
10. 07:32 PM - engine (John Allen hurn)
11. 09:24 PM - Re: Engine source. (Tedd McHenry)
Message 1
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Engines-List Digest: / Bearomgs |
--> Engines-List message posted by: "Jerry Reynolds" <flyguy50@bluemarble.net>
> From: "Trampas" <tstern@nc.rr.com>
> Subject: RE: Engines-List:
> The thrust load of a prop is a concern....
Speaking with a engineer friend who designed his own cog-belt PRU, for a
Suburu.. he states that the thrust load is significantly less than might be
expected.. and that conventional ball bearings do an excellent job of
handing both the radial and axial loads.. with his front bearing specificied
for the load of the belt, gryoscopic AND the thrust loads, and a rear
bearing being potentially smaller. In his case, both were sealed bearings,
with life expectancy to exceed belt life significantly, and cheap enough to
replace at maintenence.
Regarding the other post, on flywheels, and loads, I think it will be found
that a prop large enough to handle the HP you guys are talking about, will
have considerably higher gryoscopic loads than a small diameter 20 lb
flywheel.. especially in aerobatics!! Never seen a airboat do a snap
roll...either...
Jerry
Message 2
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Engines-List Digest: / Bearomgs |
--> Engines-List message posted by: "James R. Cunningham" <jrccea@bellsouth.net>
Right on, Jerry. I expect it would be an interesting excercise to
compute the radius of gyration of both the typical prop and the typical
flywheel.
Jerry Reynolds wrote:
> Regarding the other post, on flywheels, and loads, I think it will be found
> that a prop large enough to handle the HP you guys are talking about, will
> have considerably higher gryoscopic loads than a small diameter 20 lb
> flywheel.. especially in aerobatics!! Never seen a airboat do a snap
> roll...either...
>
Message 3
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
--> Engines-List message posted by: "Terry Watson" <terry@tcwatson.com>
This is a copy of a post I made about a week ago on the RV list:
I know this is not an answer to the question you asked, but it seems like a
good time to report how extremely pleased I am that I bought my engine from
Aero Sport Power, often referred to on the list as Bart, the owner. It is a
Superior IO-360-B1B, but the data plate says Aero Sport Power, not Superior.
It has the Lightspeed ignition (flywheel sensor) on the right side and
Airflow Performance fuel injection. It is set up for a constant speed prop.
Otherwise it is stock. The thing that has pleased me so much so far is that
is that I keep running across little things that they have done to make it
easier for me. The Airflow Performance fuel injection came with Van's
install kit including anodized filtered air box plate and throttle and
mixture control brackets. The purge valve, an option with the Airfllow
Performance fuel injection, was installed. The fuel pump and filter were in
the box. The fire-sleeved prop governor hose was installed. And to top it
off, the restrictor fitting for the oil pressure was already installed. It
won't fly for a long time yet but I am really glad of my choice of engine
builder.
Terry
RV-8A #80729 hooking up the engine
-----Original Message-----
From: owner-engines-list-server@matronics.com
[mailto:owner-engines-list-server@matronics.com]On Behalf Of Dean
Psiropoulos
Subject: Engines-List: Engine source.
I didn't get any response from anyone yesterday when I posted this. Does
that mean everyone knows and uses engines from Aerosport power. Is there is
NO shop in the U.S. than can match his prices or customer service? WOW! RV
builders, is this true? Are you all using Bart's engines (or new Lycs from
Van's)? It wouldn't surprise me too much. Speak to me!! Thanks.
Dean Psiropoulos
RV-6A finish kit (finally)
Message 4
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Engines-List Digest: / Bearomgs |
--> Engines-List message posted by: Tedd McHenry <tedd@vansairforce.org>
> Right on, Jerry. I expect it would be an interesting excercise to
> compute the radius of gyration of both the typical prop and the typical
> flywheel.
Yes. And then factor in RPM and the very high instantaneous pitch rate of a
car undergoing braking, or a transverse-engine car rolling into a corner. I'd
really like to see somebody do that, as I'm sure the results would surprise a
lot of people.
Tedd McHenry
Surrey, BC
Message 5
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Engines-List Digest: / Bearomgs |
--> Engines-List message posted by: "James R. Cunningham" <jrccea@bellsouth.net>
Good idea. Please let us know what the results are. :-)
Tedd McHenry wrote:
>
> --> Engines-List message posted by: Tedd McHenry <tedd@vansairforce.org>
>
> > Right on, Jerry. I expect it would be an interesting excercise to
> > compute the radius of gyration of both the typical prop and the typical
> > flywheel.
>
> Yes. And then factor in RPM and the very high instantaneous pitch rate of a
> car undergoing braking, or a transverse-engine car rolling into a corner. I'd
> really like to see somebody do that, as I'm sure the results would surprise a
> lot of people.
>
> Tedd McHenry
> Surrey, BC
>
Message 6
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Engines-List Digest: / Bearomgs |
--> Engines-List message posted by: Tedd McHenry <tedd@vansairforce.org>
> --> Engines-List message posted by: "James R. Cunningham" <jrccea@bellsouth.net>
>
> Good idea. Please let us know what the results are. :-)
Well it's something I've wanted to do for years, because the subject keeps
coming up. But getting good data is the hard part. I'm pretty sure I can get
pitch and roll rate data from friends in the auto racing industry. And prop
manufacturers probably have data on mass and radius of gyration, although I
don't know how willing they'd be to share it. I have no idea how to get pitch
rate data for aerobatic airplanes, though, other than to video tape an
aerobatic routine and count frames.
Tedd McHenry
Surrey, BC
Message 7
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Engines-List Digest: / Bearomgs |
--> Engines-List message posted by: "James R. Cunningham" <jrccea@bellsouth.net>
Counting frames will work to the degree of accuracy we're talking
about. I expect you'll have to measure a prop and compute the moment of
inertia yourself, but that's not all that tedious either.
Jim
Tedd McHenry wrote:
>
> --> Engines-List message posted by: Tedd McHenry <tedd@vansairforce.org>
>
> > --> Engines-List message posted by: "James R. Cunningham" <jrccea@bellsouth.net>
> >
> > Good idea. Please let us know what the results are. :-)
>
> Well it's something I've wanted to do for years, because the subject keeps
> coming up. But getting good data is the hard part. I'm pretty sure I can get
> pitch and roll rate data from friends in the auto racing industry. And prop
> manufacturers probably have data on mass and radius of gyration, although I
> don't know how willing they'd be to share it. I have no idea how to get pitch
> rate data for aerobatic airplanes, though, other than to video tape an
> aerobatic routine and count frames.
>
> Tedd McHenry
> Surrey, BC
>
Message 8
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Engines-List Digest: / Bearomgs |
--> Engines-List message posted by: Tedd McHenry <tedd@vansairforce.org>
On Thu, 21 Aug 2003, James R. Cunningham wrote:
> I expect you'll have to measure a prop and compute the moment of
> inertia yourself, but that's not all that tedious either.
Except that I'd need props of the right type. Right now all I have is a small
wood prop that belongs to my local RAA chapter.
There's also the 2-blade issue. Evidently, props with three or more blades
give fairly constant gryroscopic loads, but 2-blade props give very cyclical
loads because of the very non-uniform circumferential mass distributiong. So
while the average gyro load of a 2-blade prop is the same as that of a disk of
the same mass and radius of gyration, the peak load is nearly twice as high.
That would be an important factor in determining the likelihood of a prop
snapping the crankshaft flange off.
Tedd McHenry
Surrey, BC
Message 9
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Engine source. |
--> Engines-List message posted by: "kc" <samdacat@elp.rr.com>
??Does Aero Sport Power have a web site??
----- Original Message -----
From: "Terry Watson" <terry@tcwatson.com>
Subject: RE: Engines-List: Engine source.
> --> Engines-List message posted by: "Terry Watson" <terry@tcwatson.com>
>
> This is a copy of a post I made about a week ago on the RV list:
>
> I know this is not an answer to the question you asked, but it seems like
a
> good time to report how extremely pleased I am that I bought my engine
from
> Aero Sport Power, often referred to on the list as Bart, the owner. It is
a
> Superior IO-360-B1B, but the data plate says Aero Sport Power, not
Superior.
> It has the Lightspeed ignition (flywheel sensor) on the right side and
> Airflow Performance fuel injection. It is set up for a constant speed
prop.
> Otherwise it is stock. The thing that has pleased me so much so far is
that
> is that I keep running across little things that they have done to make it
> easier for me. The Airflow Performance fuel injection came with Van's
> install kit including anodized filtered air box plate and throttle and
> mixture control brackets. The purge valve, an option with the Airfllow
> Performance fuel injection, was installed. The fuel pump and filter were
in
> the box. The fire-sleeved prop governor hose was installed. And to top
it
> off, the restrictor fitting for the oil pressure was already installed. It
> won't fly for a long time yet but I am really glad of my choice of engine
> builder.
> Terry
> RV-8A #80729 hooking up the engine
>
>
> -----Original Message-----
> From: owner-engines-list-server@matronics.com
> [mailto:owner-engines-list-server@matronics.com]On Behalf Of Dean
> Psiropoulos
> To: engines-list@matronics.com
> Subject: Engines-List: Engine source.
>
>
> I didn't get any response from anyone yesterday when I posted this. Does
> that mean everyone knows and uses engines from Aerosport power. Is there
is
> NO shop in the U.S. than can match his prices or customer service? WOW!
RV
> builders, is this true? Are you all using Bart's engines (or new Lycs
from
> Van's)? It wouldn't surprise me too much. Speak to me!! Thanks.
>
>
> Dean Psiropoulos
>
> RV-6A finish kit (finally)
>
>
Message 10
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
--> Engines-List message posted by: "John Allen hurn" <hurns-ac@comcast.net>
Hello KC,
The web site for Aero Sports Power is:
(aerosportspower.com)
Johnny Hurn
Message 11
| INDEX | Back to Main INDEX |
| PREVIOUS | Skip to PREVIOUS Message |
| NEXT | Skip to NEXT Message |
| LIST | Reply to LIST Regarding this Message |
| SENDER | Reply to SENDER Regarding this Message |
|
| Subject: | Re: Engine source. |
--> Engines-List message posted by: Tedd McHenry <tedd@vansairforce.org>
On Thu, 21 Aug 2003, kc wrote:
> ??Does Aero Sport Power have a web site??
Yes. Amazingly, it's www.aerosportpower.com!
Tedd McHenry
Surrey, BC
Other Matronics Email List Services
These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.
-- Please support this service by making your Contribution today! --
|