Today's Message Index:
----------------------
1. 08:11 AM - Re: Re: Reported 601XL Performance (HINDE,FRANK (HP-Corvallis,ex1))
2. 08:40 AM - exhaust (Paul Petty)
3. 08:55 AM - Re: exhaust (Dave Pepper)
4. 09:27 AM - Re: Re: Reported 601XL Performance (Leo J. Corbalis)
5. 09:47 AM - Re: exhaust (Paul Petty)
6. 10:10 AM - Re: exhaust (Dave Pepper)
7. 08:40 PM - First Flight (bruce thomas)
8. 09:24 PM - Re: First Flight (Fred or Sandy Hulen)
9. 09:24 PM - Re: First Flight (Bill Cardell)
10. 10:17 PM - Re: First flight (Dabusmith@aol.com)
Message 1
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| Subject: | Re: Reported 601XL Performance |
--> Zenith-List message posted by: "HINDE,FRANK (HP-Corvallis,ex1)" <frank.hinde@hp.com>
Depends who you talk to but there has been an awful lot of debate about
Zenith's speed claims.
My 601 HDS has a TOP speed of about 125 and a cruise of 110 to 115mph.
Compare that to the claimed 140mph cruise and you get the idea.
I was thinking about all sorts of speed mods to the plane and some have done
them and got a bit more but realistically you are talking about a LOT more
time and to be honest not much gain I think.
Really the 601 is starting in the wrong place if you want speed.
I think the zac XL is only rated to about 125HP engines.
Put it this way...MY choice is to build an RV 7 and sell the 601. The 601 is
not a bad plane, it has a lot of good qualities but going fast is not one of
them. Ok unless you built the plane based on the claimed cruise speeds.
Frank
-----Original Message-----
From: owner-zenith-list-server@matronics.com
[mailto:owner-zenith-list-server@matronics.com] On Behalf Of C P
Subject: Zenith-List: Re: Reported 601XL Performance
--> Zenith-List message posted by: C P <yankeerv10@yahoo.com>
Hi,
I'm new to the list so please excuse if this has been hashed out, but I
didn't see much in the archives. I have only recently started looking at the
601XL now that it has the dual stick option. Before I was mostly leaning
towards the RV-7A; but, I think I'd have an easer time with the pulled
rivets.
What kind of speeds can I realistically expect with 160 HP? 180 HP? I'll
build light with night VFR instruments only. I am thinking of a Mazda rotary
or Eggenfellner Subaru. My requirments are 150 MPH cruise and use of a 1600'
runway with trees at the end.
Have builders built up a fastback fuselage to decrease drag? The wheel pants
on the factory photos are bulbous and I bet Van's would add a few more MPH.
Any common cowling or fairing mods?
thanks for the input,
Chuck
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Message 2
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--> Zenith-List message posted by: "Paul Petty" <ppetty@c-gate.net>
Hi folks. I have an exhaust system for a 912UL/Zenith that I have no use for. I
purchased Roger Kilby's engine and are putting it on a Kolb.
Let me know if anyone need's this exhaust.
pp
Message 3
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--> Zenith-List message posted by: "Dave Pepper" <rockinrimranch@earthlink.net>
Is it a stainless steel exhaust system? new? Does it fit the new cowling
Zenair is shipping now?
Thanks....Dave
Message 4
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| Subject: | Re: Reported 601XL Performance |
--> Zenith-List message posted by: "Leo J. Corbalis" <leocorbalis@sbcglobal.net>
> Chuck -
> Not sure what to tell you - but I think you can expect terminal
velocity
> as 180 horsepower exceeds the recommended max of 125hp by a stiff margin..
> Dave
>
Let's see the law of diminishing returns says (I recall) that speed increase
is proportional to the cube root of the HP increase ratio. Not much faster
but STOLHL as in Short Takeoff and LONG HOT LANDING!
BUT IT CLIMBS LIKE A ROCKET!!!
Leo Corbalis
do not archive
Message 5
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--> Zenith-List message posted by: "Paul Petty" <ppetty@c-gate.net>
Dave, It is stainless. Dont know about the cowling. Will a photo help?
pp
do not archive
----- Original Message -----
From: "Dave Pepper" <rockinrimranch@earthlink.net>
Subject: RE: Zenith-List: exhaust
> --> Zenith-List message posted by: "Dave Pepper"
<rockinrimranch@earthlink.net>
>
> Is it a stainless steel exhaust system? new? Does it fit the new cowling
> Zenair is shipping now?
>
> Thanks....Dave
>
>
Message 6
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--> Zenith-List message posted by: "Dave Pepper" <rockinrimranch@earthlink.net>
A photo would be great........Does it fit the 912ULS 100 HP engine?
Message 7
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--> Zenith-List message posted by: "bruce thomas" <bvthomas@bigpond.com>
G,day list
Well I,ve done it. After 12 months enjoyable work, it flies.
CH701- 912S. Kit
Everything by the book! rotate 30 Kts, climb 50 Kts at 800 fpm
and cruise 75 Kts at 5000 rpm
Weight 275 kilos (605 Lbs) W&B spot on.I have used the approach that the technology
comes in the box & Chris knows more about designing planes than I do, build
it to the plans and it will work.
Needs a little fine tuning, idles too fast 2500rpm, (approach 50-55 knots) my weight,
95Kilos causes left wing low, can be adjusted out. and elevator needs full
nose down trim to fly hands off, have not figured this one out yet.
very stable longitudinally with a fast roll rate, a real joy to fly.
Keep drilling.
Regards Bruce Thomas
Melbourne Australia
Message 8
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| Subject: | Re: First Flight |
--> Zenith-List message posted by: "Fred or Sandy Hulen" <hulens61@birch.net>
Way to go..... Down Under !! Congratulations Bruce
Fred Hulen
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Message 9
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--> Zenith-List message posted by: Bill Cardell <bill@flyinmiata.com>
Congrats, Bruce!!
Do not archive
Bill Cardell (TurboDog's Dad)
Flyin' Miata
www.flyinmiata.com
www.fmprotege.com
970-242-3800
-----Original Message-----
From: bruce thomas [mailto:bvthomas@bigpond.com]
Subject: Zenith-List: First Flight
--> Zenith-List message posted by: "bruce thomas" <bvthomas@bigpond.com>
G,day list
Well I,ve done it. After 12 months enjoyable work, it flies.
CH701- 912S. Kit
Everything by the book! rotate 30 Kts, climb 50 Kts at 800 fpm and cruise 75
Kts at 5000 rpm Weight 275 kilos (605 Lbs) W&B spot on.I have used the
approach that the technology comes in the box & Chris knows more about
designing planes than I do, build it to the plans and it will work. Needs a
little fine tuning, idles too fast 2500rpm, (approach 50-55 knots) my
weight, 95Kilos causes left wing low, can be adjusted out. and elevator
needs full nose down trim to fly hands off, have not figured this one out
yet. very stable longitudinally with a fast roll rate, a real joy to fly.
Keep drilling. Regards Bruce Thomas Melbourne Australia
advertising on the Matronics Forums.
Message 10
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| Subject: | Re: First flight |
--> Zenith-List message posted by: Dabusmith@aol.com
Bruce
That's great! Congratulations!
Mine was left wing heavy also. It is level with two. I guess I'll leave mine
alone for now.
BTW...I was visiting a near by airport today and found my left carburetor was
loose. The rubber coupling had split. I have had problems with the left carb
coming disconnected before. The first time was at the first engine run. I
thought the factory left it loose. It would get shaken out of its rubber mount
if
the engine didn't start right up when it was cold. I over tightened it and in
a short time the rubber split. I suspect this part was not built quite to spec
because the right carb rubber mount fits much better and would tighten
properly per the manual. There was no way the left carb was going to stay on with
the clamp adjusted per the manual so what the heck I gave it a try. Anyway, I
was scratching my head wondering where I was going to tie the plane down and how
I was going to get home. That was when a couple of fellows came over to help.
Turns out, they where building a 701 at their hangar (beautiful
craftsmanship). They helped me with a temporary field repair and I was back home
before it
got too dark. Thanks Guys!
Dave Smith
N701XL
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