Today's Message Index:
----------------------
1. 03:21 AM - Re: Prop pitch and RPM (Philip Polstra)
2. 03:53 AM - Re: narrow head rivet gun? (Michel Therrien)
3. 06:02 AM - Re: Prop pitch and RPM (Bill Morelli)
4. 06:19 AM - Re: Prop pitch and RPM (Don Walker)
5. 08:25 AM - Re: narrow head rivet gun? (Gary Gower)
6. 09:39 AM - Re: Prop pitch and RPM (Jim and Lucy)
7. 09:47 AM - Narrow rivet head gun (H. Robert Schoenberger)
8. 11:07 AM - Re: Narrow rivet head gun (Perry M. Chappano)
9. 11:20 AM - Re: Prop pitch and RPM (Don Walker)
10. 03:47 PM - Web site update (Michel Therrien)
11. 09:34 PM - Re: Prop pitch and RPM (Cdbyuma@aol.com)
Message 1
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| Subject: | Prop pitch and RPM |
--> Zenith-List message posted by: "Philip Polstra" <ppolstra@mindspring.com>
--> Zenith-List message posted by: "John Karnes" <jpkarnes@charter.net>
>I have my 3-bladed Warp Drive pitch at 15 deg. and am getting 4200 static
>RPM from my Stratus (tied to my truck). Isn't that kind of low?
Maybe not. I don't have a good static RPM number for my CH601HDS, because
the brakes can't hold me with more than 3000 rpm. When I start my takeoff
roll, the rpm is around 4600-4800. It is about 4800 on climbout. Only in
cruise at wide open throttle can I hit the 5400 rpm redline.
Message 2
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| Subject: | Re: narrow head rivet gun? |
--> Zenith-List message posted by: Michel Therrien <mtherr@yahoo.com>
The solution has been described by Jari and George.
Here is a picture of what I did:
http://mthobby.pcperfect.com/ch601/images/Dcp00643.jpg
You can see more on my "tools" page:
http://mthobby.pcperfect.com/ch601/chtools.htm
Michel
--- CLOJAN@aol.com wrote:
> --> Zenith-List message posted by: CLOJAN@aol.com
>
... The head of the rivet gun seems to
> be too wide to fit
> straight on the rivet due to the L angle of the
> longeron.
=====
----------------------------
Michel Therrien CH601-HD
http://mthobby.pcperfect.com/ch601
http://www.zenithair.com/bldrlist/profiles/mthobby
http://pages.infinit.net/mthobby
__________________________________
Message 3
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| Subject: | Re: Prop pitch and RPM |
--> Zenith-List message posted by: Bill Morelli <billvt@together.net>
I have the same prop and engine. When I did my static run up my prop was
pitched at 12.5 degrees and I had 4900 rpm. The higher you make the pitch,
the lower the RPM will be so your numbers may be reasonable.
Bill
>I have my 3-bladed Warp Drive pitch at 15 deg. and am getting 4200 static
>RPM from my Stratus (tied to my truck). Isn't that kind of low?
>
>John Karnes
>Port Orchard, WA
Message 4
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| Subject: | Re: Prop pitch and RPM |
Seal-Send-Time: Wed, 11 Jun 2003 08:19:07 -0500
--> Zenith-List message posted by: "Don Walker" <dwalk3dw@msn.com>
Yes, John. That sounds a little low. Temperature will cause a good deal of variation
from summer to winter, but my estimation is you should be getting around
4400-4500 static if your prop is at 15 degrees with an ambient temperature of
70 to 80. Horse power may vary a bit, too. Reiner told me my Stratus produced
113 h.p. (Probably some of his b.s., but it has been a strong engine.)
I just put a new engine on that is not hopped up like the Stratus. It has smaller
pistons and the heads have not been shaved, but uses the Stratus intake
system. It produces 4250 rpm tied up like yours in 80 degrees ambient with 15
degrees on Warp Drive prop. I estimate that it produces 90 h.p.
With the valve cover off you can measure the heads and should find a width
of around 3.525. Stock is around 3.575. The pistons should be .020 over for what
they call the 100 hp engine. Don Walker HDS
----- Original Message -----
From: John Karnes
To: zenith-list@matronics.com
Sent: Tuesday, June 10, 2003 9:44 PM
Subject: Zenith-List: Prop pitch and RPM
--> Zenith-List message posted by: "John Karnes" <jpkarnes@charter.net>
I have my 3-bladed Warp Drive pitch at 15 deg. and am getting 4200 static
RPM from my Stratus (tied to my truck). Isn't that kind of low?
John Karnes
Port Orchard, WA
Message 5
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| Subject: | Re: narrow head rivet gun? |
--> Zenith-List message posted by: Gary Gower <ggower_99@yahoo.com>
When we had that problem, we shoped around for a hand riveter with the
norrower head we could find, and we even thinned up the side with the
grinder wheel as much as possible, we use this riveter only for those
areas, we use the normal air riveter else where.
By the way was one made in Taiwan that cost US$ 2.95, we bought two of
them in case we ruin one when grinding it, they even came with a 20
rivet bag, no rivets for our project of course :-)
Another place I remember we found dificult to rivet was in the rear
wing attanchement area, where the diagonal tube joins the rear wing
support.
Not to much of these type of places I can remember.
Saludos
Gary Gower
701 912S
Guadalajara, Jalisco, Mexico
--- CLOJAN@aol.com wrote:
> --> Zenith-List message posted by: CLOJAN@aol.com
>
> Hello folks: I ran into a little problem when riveting the lower
> longerons to
> the cabin floor. The head of the rivet gun seems to be too wide to
> fit
> straight on the rivet due to the L angle of the longeron. The rivet
> line is smack
> dab in the middle of the L but I will have to angle the head of the
> gun to set
> the rivet. I am sure one of you smart Zenith builders have solved
> this problem.
> Ideas? Thanks, Jack Russell
>
>
>
>
>
>
>
>
__________________________________
Message 6
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| Subject: | Re: Prop pitch and RPM |
--> Zenith-List message posted by: Jim and Lucy <jpollard@mnsi.net>
>
>
> --> Zenith-List message posted by: "John Karnes" <jpkarnes@charter.net>
>
> I have my 3-bladed Warp Drive pitch at 15 deg. and am getting 4200 static
> RPM from my Stratus (tied to my truck). Isn't that kind of low?
>
> John Karnes
> Port Orchard, WA
>
There are alot of different combinations of warp drive 3 blade setups
suitable for a zenair.
Square tips,tapered tips,round tips,and there is a new one I have
not seen yet. Also different length of blades anywhere from 66 up
to I think 72 inches. Make sure you are comparing something close
to what you have.
Jim Pollard
ch601hds
considering patio door latches for canopy
Message 7
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| Subject: | Narrow rivet head gun |
--> Zenith-List message posted by: "H. Robert Schoenberger" <HRS4@prodigy.net>
List . . . I remember seeing something about two or three months ago (The Zenith
monthly newsletter or Kitplane ?) where the person had a small piece of metal,
not too thick which had a hole drilled through it for the shaft of the rivet.
The face of this metal plug which went up against the too narrow structural
member was beveled. The shank of the rivet at this face was bent slightly to
allow the rivet gun to be aligned at an angle with the rivet surfact. The author
said that the gun pulled the rivets perfectly even though the shank was
pulled at an angle.
I'm in the midst of a big project right now and can't look up the exact article.
Maybe some others on the list will recall this article and can furnish some
additional info. Hap Schoenberger, 701 tail finished, working on right wing.
Message 8
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| Subject: | Re: Narrow rivet head gun |
--> Zenith-List message posted by: "Perry M. Chappano" <polestar@prodigy.net>
True enoough.
If you have money to burn I've seen a kit at Lowe's that sells for about $25 with
multiple angles/attachments. No idea what the quality or usefulness is.
Perry Chappano
N9961 601XL
Finishing elevator & stabilizer
"H. Robert Schoenberger" wrote:
> --> Zenith-List message posted by: "H. Robert Schoenberger" <HRS4@prodigy.net>
>
> List . . . I remember seeing something about two or three months ago (The Zenith
monthly newsletter or Kitplane ?) where the person had a small piece of metal,
not too thick which had a hole drilled through it for the shaft of the rivet.
The face of this metal plug which went up against the too narrow structural
member was beveled. The shank of the rivet at this face was bent slightly
to allow the rivet gun to be aligned at an angle with the rivet surfact. The
author said that the gun pulled the rivets perfectly even though the shank was
pulled at an angle.
>
> I'm in the midst of a big project right now and can't look up the exact article.
Maybe some others on the list will recall this article and can furnish some
additional info. Hap Schoenberger, 701 tail finished, working on right wing.
>
Message 9
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| Subject: | Re: Prop pitch and RPM |
Seal-Send-Time: Wed, 11 Jun 2003 13:20:17 -0500
--> Zenith-List message posted by: "Don Walker" <dwalk3dw@msn.com>
Good point, Jim.
John, the figures I wrote earlier are with a straight blade or square tipped,
70 inch Warp Drive. Don
----- Original Message -----
From: Jim and Lucy
To: zenith-list@matronics.com
Sent: Wednesday, June 11, 2003 11:38 AM
Subject: Re: Zenith-List: Prop pitch and RPM
--> Zenith-List message posted by: Jim and Lucy <jpollard@mnsi.net>
>
>
> --> Zenith-List message posted by: "John Karnes" <jpkarnes@charter.net>
>
> I have my 3-bladed Warp Drive pitch at 15 deg. and am getting 4200 static
> RPM from my Stratus (tied to my truck). Isn't that kind of low?
>
> John Karnes
> Port Orchard, WA
>
There are alot of different combinations of warp drive 3 blade setups
suitable for a zenair.
Square tips,tapered tips,round tips,and there is a new one I have
not seen yet. Also different length of blades anywhere from 66 up
to I think 72 inches. Make sure you are comparing something close
to what you have.
Jim Pollard
ch601hds
considering patio door latches for canopy
Message 10
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--> Zenith-List message posted by: Michel Therrien <mtherr@yahoo.com>
Hello group,
Just want to let you know that I updated my website
yesterday. I added a new page describing how I made
the plug for the cowling. The cowling page will be
updated as I progress in completing it. (I layed up
the fiberglass today)
I also added a canopy page that will be updated once I
get back to working on it (after I'm done with the
cowling).
Finally, I included some pictures of how I made the
wing root filets.
Michel
do not archive
=====
----------------------------
Michel Therrien CH601-HD
http://mthobby.pcperfect.com/ch601
http://www.zenithair.com/bldrlist/profiles/mthobby
http://pages.infinit.net/mthobby
__________________________________
Message 11
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| Subject: | Re: Prop pitch and RPM |
--> Zenith-List message posted by: Cdbyuma@aol.com
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