Today's Message Index:
----------------------
1. 12:40 AM - Re: 601 HDS - how fast is it really (heisan)
2. 02:41 AM - Re: Re: 601 HDS - how fast is it really (Dave Austin)
3. 07:17 AM - flap question (Skip Perry)
4. 07:31 AM - Re: flap question (Bryan Martin)
5. 07:32 AM - Re: Re: 601 HDS - how fast is it really (Bill Naumuk)
6. 09:22 AM - Re: flap question (Jaybannist@cs.com)
7. 10:05 AM - Re: Re: Use of 7075-T-6 for wing attach fittings? (Walter Carey)
8. 01:07 PM - Re: Use of 7075-T-6 for wing attach fittings? (PatrickW)
9. 04:42 PM - Good deal on air compressor (Ronald Steele)
10. 05:44 PM - Securing the Seats (PatrickW)
Message 1
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| Subject: | Re: 601 HDS - how fast is it really |
larry(at)macsmachine.com wrote:
> Hi Justin,
> I doubt there are any HDSs with the 912 seeing those numbers. That
> said, the HDS is capable of decent speeds when the prop is pitched long,
> it has the proper fairings and the plane is lightly loaded at an
> altitude of over 3500 feet.
I wonder how the factory does it. The Sport Pilot flight test claims 138mph (indicated)
at 2000' at near gross weight.
> My Stratus Subaru with the prop pitched at
> 17-degrees and the 9-1/2 gallon header tank full and just me in the
> plane, can easily be trimmed out to reach 133 mph at 5000 rpm. At 4600
> rpm it does a 120 mph cruise and fully loaded, it complies with the LSA
> performance standard for stall speed. If you want to go faster, though,
> you'll only have to go with a Corvair or a Jabaru 3300. It will climb
> at 1000 fpm lightly loaded as described as the Stratus does deliver 100
> h.p.as well as any other 100 h.p. engine on 87-octane or 100 LL.
OK - So it will probably do it on 100hp with spats and a few aerodynamic clean-ups...
> Curious you'd build an HDS when the XL is the latest aircraft in the
> Zenith series. Aside from the heavy landing gear spring, it's a great
> airplane, easy speed, flaps etc.
I was initially considering the HDS because I may be able to get a well built airframe
at a very good price. Also, if the Zenith specs are to be believed, then
the HDS is substantially faster per hp than the XL. The higher wing loading
should also make it more comfortable in the turbulence that we regularly experience
around here...
The XL has very little extra to offer, unless it lives up to Zenith's performance
figures more reliably than the HDS.
Thanks for the info.
Justin
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=184823#184823
Message 2
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| Subject: | Re: 601 HDS - how fast is it really |
My 601 HDS with 912UL and Arplast air adjustable prop will cruise at 120 mph
IAS at 3500 ft. running 5300 rpm.
I have some drag reduction, radiator and oil cooler in cowl and wing root
fairings.
I think that IAS is approx 5 mph too high by comparison with other a/c.
Dave Austin 601HDS - 912, Spitfire Mk VIII
Message 3
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I am getting ready to wire my flaps and have a question. According to my
drawings 1)the "up" micro-switch should be 12mm from the rear of the motor
housing; 2)the front of the "down" micro-switch should be 23mm from the rear
of the "up" switch; 3)the front edge of the "down" switch should be 63mm
from the rear of the motor housing.
My switches have a set screw that has a sealant painted over to prevent
movement and the distances are different. My distances are 1)17mm; 2)14mm;
3) 59mm. Since there is the sealant on the set screws I don't really know
whether I should change this or not. Have any of you had this problem?
Thanks in advance.
Skip Perry
Fort Myers, FL
DO NOT ARCHIVE
Message 4
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| Subject: | Re: flap question |
I had to fine tune the position of the switches to work with my
airplane, you will probably have to do the same since no two
homebuilts are exactly the same.
On May 26, 2008, at 10:14 AM, Skip Perry wrote:
> >
>
> I am getting ready to wire my flaps and have a question. ...
>
> My switches have a set screw that has a sealant painted over to
> prevent
> movement and the distances are different. My distances are 1)17mm;
> 2)14mm;
> 3) 59mm. Since there is the sealant on the set screws I don't really
> know
> whether I should change this or not. Have any of you had this problem?
>
--
Bryan Martin
N61BM, CH 601 XL,
RAM Subaru, Stratus redrive.
do not archive.
Message 5
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| Subject: | Re: 601 HDS - how fast is it really |
Justin-
We'll know probably next year how an HDS performs vs an XL. My buddy
Lynn Dingfelder and I both built up Corvairs; he has an XL while I have an
HDS airframe. Although my basic airframe is a couple of pounds heavier than
his, I'm going glass panel while he went steam gauge. He's painting, while
I'm polishing. Should be really close in the long run, weight-wise.
I must be getting optimistic in my old age. There was a long time I
doubted if I'd ever get my project in the air!
Good building!
Bill
do not archive
----- Original Message -----
From: "heisan" <justin@expertron.co.za>
Sent: Monday, May 26, 2008 3:35 AM
Subject: Zenith601-List: Re: 601 HDS - how fast is it really
>
>
> larry(at)macsmachine.com wrote:
>> Hi Justin,
>> I doubt there are any HDSs with the 912 seeing those numbers. That
>> said, the HDS is capable of decent speeds when the prop is pitched long,
>> it has the proper fairings and the plane is lightly loaded at an
>> altitude of over 3500 feet.
>
>
> I wonder how the factory does it. The Sport Pilot flight test claims
> 138mph (indicated) at 2000' at near gross weight.
>
>
>> My Stratus Subaru with the prop pitched at
>> 17-degrees and the 9-1/2 gallon header tank full and just me in the
>> plane, can easily be trimmed out to reach 133 mph at 5000 rpm. At 4600
>> rpm it does a 120 mph cruise and fully loaded, it complies with the LSA
>> performance standard for stall speed. If you want to go faster, though,
>> you'll only have to go with a Corvair or a Jabaru 3300. It will climb
>> at 1000 fpm lightly loaded as described as the Stratus does deliver 100
>> h.p.as well as any other 100 h.p. engine on 87-octane or 100 LL.
>
>
> OK - So it will probably do it on 100hp with spats and a few aerodynamic
> clean-ups...
>
>
>> Curious you'd build an HDS when the XL is the latest aircraft in the
>> Zenith series. Aside from the heavy landing gear spring, it's a great
>> airplane, easy speed, flaps etc.
>
>
> I was initially considering the HDS because I may be able to get a well
> built airframe at a very good price. Also, if the Zenith specs are to be
> believed, then the HDS is substantially faster per hp than the XL. The
> higher wing loading should also make it more comfortable in the turbulence
> that we regularly experience around here...
>
> The XL has very little extra to offer, unless it lives up to Zenith's
> performance figures more reliably than the HDS.
>
> Thanks for the info.
> Justin
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=184823#184823
>
>
>
Message 6
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Skip,
I am in the process of aligning and calibrating my flaps right now. I built according
to the plans and instructions. It seems there are enough tolerances and
variations that it simply doesn't all come together perfectly every time. I
have had to move the microswitch blocks and the nylon plates where the actuator
horn pins insert in the last flap rib. Don't be concerned. Even though they
are "paint safetied", they are adjustable for a good reason.
Jay in Dallas
"Skip Perry" <sperry50@comcast.net> wrote:
>
>I am getting ready to wire my flaps and have a question. According to my
>drawings 1)the "up" micro-switch should be 12mm from the rear of the motor
>housing; 2)the front of the "down" micro-switch should be 23mm from the rear
>of the "up" switch; 3)the front edge of the "down" switch should be 63mm
>from the rear of the motor housing.
>
>My switches have a set screw that has a sealant painted over to prevent
>movement and the distances are different. My distances are 1)17mm; 2)14mm;
>3) 59mm. Since there is the sealant on the set screws I don't really know
>whether I should change this or not. Have any of you had this problem?
>Thanks in advance.
>
>Skip Perry
>Fort Myers, FL
>
>DO NOT ARCHIVE
>
>
Message 7
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| Subject: | Re: Use of 7075-T-6 for wing attach fittings? |
Thanks Terry.
Walt
See link below.
Terry
At 06:35 PM 5/25/2008 -0700, Walt wrote:
>Hi Patrick,
>
> Thanks for the feedback. My plans are dated Apr 04 and they show the
> .063 doubler at the end of the rear spar attached with 20 A-5 rivets. I
> checked my completed wings and I have them per plans. I was talking about
> doubling up the thickness of the center spar which runs thru the
> fuselage, plus doubling up the attachment plates which come out the side
> of the fuselage and connect the center spar to the rear spar of the wings.
>
> By the way, where can I find the site you guys keep talking about where
> there are photos of the Yuba City accident? I have a 20 inch LCD computer
> screen and maybe I can see if there is a doubler riveted to the rear
> spar. Walt
>>From: "James E. Lanier"
>>To: zenith-list@matronics.com
>>Subject: Zenith-List: CH601 Yuba City Photos Link
>>Sender: owner-zenith-list-server@matronics.com
>>X-Spam-Status: No, hits=4.80 required=5.00
>>tests=LOCALPART_IN_SUBJECT,BAYES_20,SPF_PASS,NO_RDNS2,RATWR10_MESSID,OTHER
>> version=3.2.1
>>X-Spam-Level: ****
>>X-Spam-Checker-Version: SpamAssassin 3.2.1 (1.0) on mail.rmtnnet.com
>>
>>--> Zenith-List message posted by: "James E. Lanier"
>>
>>You can download the zip from here:
>>
>>www.chemroc.com/CH601/Post_crash.zip
>>
>>Jim
Terry Phillips
ttp44~at~rkymtn.net
Corvallis MT
601XL/Jab 3300 s .. l .. o .. o .. w build kit - Tail, flaps, & ailerons
are done; working on the wings
http://www.mykitlog.com/N47TP/
Message 8
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| Subject: | Re: Use of 7075-T-6 for wing attach fittings? |
careywf(at)sbcglobal.net wrote:
> By the way, where can I find the site you guys keep talking about where there
are photos of the Yuba City accident?
Here is the thread with that link:
http://forums.matronics.com/viewtopic.php?t=42585&highlight=link
--------
Patrick
601XL/Corvair
N63PZ (reserved)
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=184919#184919
Message 9
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| Subject: | Good deal on air compressor |
I bit the bullet today and decided to get an AC adequate to run a
pneumatic drill. I ended up a Lowes and got the vertical tank 30
gallon belt driven model. The marked price was $384. It turns out
it's a discontinued model, and I got the last one on the floor, with
no manual for $100. I'm not saying anybody else can get this good of
a deal, but if you are in the market for an AC, it's worth dropping
in at Lowes.
Ron
Message 10
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| Subject: | Securing the Seats |
While flying with a guy in an AMD 601XL, he mentioned that the seats can slide
forward in a stall, resulting in some exciting moments as the seats interfere
with the sticks (Dual Sticks) resulting in the inability to pull up until you
get the seat slid back out of the way...
Any ideas on how to secure the seats from sliding forward? I'd need to retain
access underneath the seats.
Velcro? Straps? What works for you...?
Thanks,
- Pat
--------
Patrick
601XL/Corvair
N63PZ (reserved)
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=184951#184951
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