Today's Message Index:
----------------------
1. 05:39 AM - Re: CHT - Water Temps - Plug Colors (Andrew SanClemente)
2. 06:35 AM - Rotation Speeds - 601 HDS (Andrew SanClemente)
3. 07:12 AM - Re: CHT - Water Temps - Plug Colors (Larry McFarland)
4. 09:32 AM - Stratus primer and fuel hookup questions (Hansen, Ronald)
5. 10:44 AM - Re: Stratus primer and fuel hookup questions (Larry McFarland)
6. 08:23 PM - Re: Stratus primer and fuel hookup questions (gary)
Message 1
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| Subject: | Re: CHT - Water Temps - Plug Colors |
--> Stratus-List message posted by: Andrew SanClemente <ansancle@townisp.com>
Larry,
as usual, thank you for the information and feel free to make it as
long as you want, I want to read it, others can skip if they want.
I do have the block CHT probe, not the plug type. I think I will
pull the CHT and water Temp probes do some testing in H2O where I can
tell the exact temp via thermometer - make sure they are reading
correctly. My water temp may be off since I know the thermostat is
opening and coolant is flowing through the hoses and radiator - but
it has yet to hit 180 on the gauge. Getting my oil temp online will
give me another data point which will be good.
Thanks again!
Andy
DO NOT ARCHIVE
On Thu, 14 Oct 2004 20:21:00 -0500, Larry McFarland wrote:
>--> Stratus-List message posted by: "Larry McFarland"
><larrymc@qconline.com>
>
>Andrew,
>The cooling issues for the stratus begin with water temps
>as I believe the thermostat opens at or near 180-deg F.
>If you have CHTs that exceed limits quickly, there
>are two things you should consider. Do you have the correct
>CHT thermocouples? "Block thermocouples" read about 60-degrees
>cooler than "spark plug thermocouples". If it's not this, you
should
>really have an EGT that confirms your mixture's correct and
>delivering
>between 1200 and 1400 degrees at higher rpms. Warm the engine
>first to get oil to 120 and coolant to 180 before raising the rpms
>above 2000. Confirm that you've got water circulation by checking
>your
>hoses.
>Then, raise the rpms to 3500-4000 to see what your CHTs are.
>230 is CHT max. If they're above the 225 level, check your EGT
>at that point. If EGTs are close to 1300, look to your thermostat.
>If
>they're near 1400, look to your mixture and rejetting Bings.
>The Stratus provides #164 jets and the circlip is generally on the
#2
>notch. My circlip had to be lowered to the #3 notch and I'm using
>#170 jets. If you don't have an EGT, check that the timing is set
>to 31-degrees before top dead center at 4000 rpm. (best done withou
>the prop on) If you're ok there, you should consider the EGT and
>CHT.
>Plugs will soot up at idle and not be readable just by looking at
>them.
>After wiping the soot off, check the base color. What you describe
>as light brown under the soot is probably in range. If any plug is
>white-tan, look further at enriching mixture.
>
>As usual, I've said too much, but it sounds a lot like what early
>on, I went
>through in sorting out my Stratus. It's a good engine that needs
>tweeking
>at the carbs and radiator for the individual installation.
>Hope this helps,
>
>Larry McFarland
>Do not archive
Message 2
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| Subject: | Rotation Speeds - 601 HDS |
--> Stratus-List message posted by: Andrew SanClemente <ansancle@townisp.com>
Sorry to ask this but I scoured the archives and couldn't find the
numbers Im looking for. Im sure others may find this useful down the
road as well.
In a 601 HDS (I have stratus) What are people using for :
- Rotation Speed on takeoff (and I noticed in the archives back
elevator is required or no liftoff regardless of speed)
- Downwind Leg
- Base Leg
- Final
- Touchdown
Please specify if your using MPH or KTS.
Im finalizing my flight test plan and want to have these numbers in
there.
Thanks!!!
Andy
Message 3
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| Subject: | Re: CHT - Water Temps - Plug Colors |
--> Stratus-List message posted by: "Larry McFarland" <larrymc@qconline.com>
Andrew,
There's one more thing you want to check, and that's the prospect
that you have air pockets in your coolant collecting at the engine
or in the radiator. Bleed the air from hoses above the thermostat and
if your radiator is tilted like mine, with the opening tubes at the lowest
point, undo your radiator while still plumbed and lower the
bottom to allow air to escape up the tubes. I put a schrader
valve in my radiator bottom, but it didn't work. I found a quart of air
went up the tubes when the radiator was momentarily re-angled.
This could be the reason that your CHTs are disproportionately high.
Larry
Do not archive
----- Original Message -----
From: "Andrew SanClemente" <ansancle@townisp.com>
Subject: Re: Stratus-List: CHT - Water Temps - Plug Colors
> --> Stratus-List message posted by: Andrew SanClemente
> <ansancle@townisp.com>
>
> Larry,
> as usual, thank you for the information and feel free to make it as
> long as you want, I want to read it, others can skip if they want.
>
> I do have the block CHT probe, not the plug type. I think I will
> pull the CHT and water Temp probes do some testing in H2O where I can
> tell the exact temp via thermometer - make sure they are reading
> correctly. My water temp may be off since I know the thermostat is
> opening and coolant is flowing through the hoses and radiator - but
> it has yet to hit 180 on the gauge. Getting my oil temp online will
> give me another data point which will be good.
> Thanks again!
> Andy
>
> DO NOT ARCHIVE
>
>
> On Thu, 14 Oct 2004 20:21:00 -0500, Larry McFarland wrote:
>>--> Stratus-List message posted by: "Larry McFarland"
>><larrymc@qconline.com>
>>
>>Andrew,
>>The cooling issues for the stratus begin with water temps
>>as I believe the thermostat opens at or near 180-deg F.
>>If you have CHTs that exceed limits quickly, there
>>are two things you should consider. Do you have the correct
>>CHT thermocouples? "Block thermocouples" read about 60-degrees
>>cooler than "spark plug thermocouples". If it's not this, you
> should
>>really have an EGT that confirms your mixture's correct and
>>delivering
>>between 1200 and 1400 degrees at higher rpms. Warm the engine
>>first to get oil to 120 and coolant to 180 before raising the rpms
>>above 2000. Confirm that you've got water circulation by checking
>>your
>>hoses.
>>Then, raise the rpms to 3500-4000 to see what your CHTs are.
>>230 is CHT max. If they're above the 225 level, check your EGT
>>at that point. If EGTs are close to 1300, look to your thermostat.
>>If
>>they're near 1400, look to your mixture and rejetting Bings.
>>The Stratus provides #164 jets and the circlip is generally on the
> #2
>>notch. My circlip had to be lowered to the #3 notch and I'm using
>>#170 jets. If you don't have an EGT, check that the timing is set
>>to 31-degrees before top dead center at 4000 rpm. (best done withou
>>the prop on) If you're ok there, you should consider the EGT and
>>CHT.
>>Plugs will soot up at idle and not be readable just by looking at
>>them.
>>After wiping the soot off, check the base color. What you describe
>>as light brown under the soot is probably in range. If any plug is
>>white-tan, look further at enriching mixture.
>>
>>As usual, I've said too much, but it sounds a lot like what early
>>on, I went
>>through in sorting out my Stratus. It's a good engine that needs
>>tweeking
>>at the carbs and radiator for the individual installation.
>>Hope this helps,
>>
>>Larry McFarland
>>Do not archive
>
>
>
Message 4
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| Subject: | Stratus primer and fuel hookup questions |
--> Stratus-List message posted by: "Hansen, Ronald" <RH122050@ncr.com>
I'm getting ready to install a Stratus EA81 on a Zenair 601HDS and
have run into a couple of things lately I'm not too sure about:
1) What are folks using as fuel line between an electric primer (ACS
type) and the carbs? The fitting on the bottom of the carbs is only
about half an inch long and less than 1/4 inch OD. I'm having trouble
finding a snug fit and you could barely get one hose clamp on there.
Any suggestions? Are people replacing the primer fitting? Are people
putting in a "T" on each carb to give access for carb sync tools?
2) What are you using for "T"s for the main fuel lines after the fuel
filter? Zenith uses a small brass "T" that would accommodate one hose
clamp per branch, but it seems a little "lawnmowerish" for an airplane.
Using three AN 1/4 inch hose fittings screwed into an all-male "T"
would work, but seems a bit ungainly. As much as I've read over the
years, I must be missing some nifty products or ideas.
Thanks in advance for the help,
Ron Hansen
Los Angeles
601HDS, day-nite VFR, scratch-built, Stratus, BRS
Airframe 90%
Plumbing 80%
Wiring 60%
Message 5
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| Subject: | Re: Stratus primer and fuel hookup questions |
--> Stratus-List message posted by: "Larry McFarland" <larrymc@qconline.com>
Ron,
I used the original dual-choke cables to put in the "inrichment circuit"
(term used by Bing). Didn't like the short fitting either.
As for the T after the main fuel filter, I used a AN 824 T and aeroquip 491
hose fittings with a stainless sheathed hose to get from the pumps to the
filter
and then to the carbs. These are clamped at the Bings and are really
durable.
Carb sync is worth while only once or twice if you've managed to avoid the
dual
cables for throttle control. I purchased a device to check this, but will
not have
much use for it after verifying the carbs are in sync because I made a flex
connection
that ties the carb throttles together and they are operated by a single
solid sheathed .060 wire
that does push-pull on the right carb from the firewall center arm. Works
like a Cessna 150 or other
and hits the stops exactly every time. If you need better pictures, just
ask.
More details can be found on my site for Scratch Built 601s on the Subaru
engine page.
www.macsmachine.com
Congratulations on making it this far. The scratch built 601 is a great
work in progress.
Hope this helps.
Larry McFarland - 601HDS (scratch built) w/Stratus and Ram Heads, 42 hours.
Subject: Stratus-List: Stratus primer and fuel hookup questions
> I'm getting ready to install a Stratus EA81 on a Zenair 601HDS and
> have run into a couple of things lately I'm not too sure about:
>
> 1) What are folks using as fuel line between an electric primer (ACS
> type) and the carbs? >
> 2) What are you using for "T"s for the main fuel lines after the fuel
> filter? > Thanks in advance for the help,
>
> Ron Hansen
> Los Angeles
> 601HDS, day-nite VFR, scratch-built, Stratus, BRS
> Airframe 90%
> Plumbing 80%
> Wiring 60%
Message 6
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| Subject: | Re: Stratus primer and fuel hookup questions |
--> Stratus-List message posted by: "gary" <FlyinK@Efortress.com>
Ron,
I used blue Aeroquip rubber hose and aluminum barbed 1/8 NPT fittings into
a female 1/8NPT "T".
gary
> 1) What are folks using as fuel line between an electric primer (ACS
> type) and the carbs? The fitting on the bottom of the carbs is only
> about half an inch long and less than 1/4 inch OD. I'm having trouble
> finding a snug fit and you could barely get one hose clamp on there.
> Any suggestions? Are people replacing the primer fitting? Are people
> putting in a "T" on each carb to give access for carb sync tools?
>
> 2) What are you using for "T"s for the main fuel lines after the fuel
> filter? Zenith uses a small brass "T" that would accommodate one hose
> clamp per branch, but it seems a little "lawnmowerish" for an airplane.
> Using three AN 1/4 inch hose fittings screwed into an all-male "T"
> would work, but seems a bit ungainly. As much as I've read over the
> years, I must be missing some nifty products or ideas.
>
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