Cowling mod performance info

[Raptor05121]

That resurfacing is nice!

[bonal]

1 hour ago, gsxrpilot said:

I flew the Bob Axiom Memorial Air Race yesterday in Taylor, TX. According to race officials, I averaged 154 kts. over the course. Some C's are slipperier than others.

My compliments to the race organizers for arranging tail winds on all the course headings..Just kidding Gixer 

[Hank]

1 hour ago, daver328 said:

I offer up ...  In the  interest of honest discussion:

Can't run LOP. No matter what Mike Bush says about small block carbureted Lycomings.

You have the efficiency and range -hands down ....

speed. you have an edge. Ever so slight ...

I couldn't run LOP in my C until I reworked the doghouse twice and rebuilt the carb heat box--the joint failed and it defaulted to wide open regardless of knob position. Now I can get 20-25°F LOP at altitude. But I don't have fuel flow . . . Need to make a slow trip and see what it does to fuel burn.

[gsxrpilot]

I'm able to run LOP in my C about 40% of the time.  The longer the flight, the more I'll continue to fiddle with it, but sometimes it won't go no matter what I do. Other times its a think of beauty as all cylinders are within a few degrees of each other and about 50 degrees LOP.

[DaV8or]

4 hours ago, daver328 said:

PowerFlow and Challenger Intake alone make up for 20 ponies!!!

Now I have equal thrust - and have less drag ... And dare I say (Chris "old boy") LESS WEIGHT!!!! 

This is starting to sound like a Japanese car tuner forum! You know all those guys running those Honda Civics are making 250-300 hp right? Sure, you just add up the HP gains claimed by each manufacturer of bolt on gadgets and then add it to the factory stock number. The fact that they struggle to keep up with the mom in the Mini Van just means they don't have that tune quite right yet on their lap top. 

[Supercop0184]

Paul - we need to do an engine leaning class

Sent from my iPhone using Tapatalk

[mike20papa]

Heat Boxes...I spent a lot of time repairing/reworking my heat box to get the door to swing up high and out of the intake, also cut off all the air flow from the muffler.  I also made all new linkages and replaced the needle bearings on the carb heat door with those Mcfarlane "elastomeric bearings" so I wouldn't have my engine ingesting old worn out needle bearings just cause the FAA suggests that's the more air worthy way,  For us 180 hp mooney guys, I think the induction system lacks a lot to be desired, but the factory seems to always have figured out a pretty good solution, when you actually try to do more than just complain - actually design something better.  I've never understood why the heat box is not integral with the lower cowling intake and put the flex connection at the carb.  it would drop the box and allow for considering a smooth curved upward sweep to be built into the rear of the box for improved flow.  Also, that "flex" boot that mooney uses to connect the box to the cowling is really pretty useless when loaded from side to side, which is the normal vibration loading.  Hence, all the 180 hp cowlings I've ever seen are cracked around the intake openings and the airfilter support frames = cracked.  Also, all the heat boxes look like they've been shaken nearly to pieces with the carb heat linkages all loosy/goosy worn out affairs.  To me, the airfilter - this one or the other one - small potatoes.  While Saber Techs cowling mod is aesthetically way cooler looking, it's the doghouse replacement and the improved induction system that I think really wins.

[flyntgr1]

On ‎4‎/‎10‎/‎2016 at 8:31 AM, Sabremech said:

Hi Raptor05121,

The air filter is relocated to the left cooling air inlet. That's the reason for needing the 201 style spinner and backplate. That gives the room needed to locate the air filter in the front baffling.

I'm hesitant to give a price estimate yet as there's still a few unknown costs for parts. When I have those costs known, then I can give an estimate.

Thank you,

David

Sabremech,

You mentioned in the past that the spinner is your biggest issue on price.  If I remember correctly, you mentioned some composite spinners reasonably priced available to the experimental market.  With the news of the Dynon STC and the Part 23 rewrite, do you think you will be able to offer something like the composite spinner? 

[TTaylor]

3 minutes ago, flyntgr1 said:

Sabremech,

You mentioned in the past that the spinner is your biggest issue on price.  If I remember correctly, you mentioned some composite spinners reasonably priced available to the experimental market.  With the news of the Dynon STC and the Part 23 rewrite, do you think you will be able to offer something like the composite spinner? 

The problem is each propelled type has a different spinner and there are many different propellers on the fleet spread across 60 years.

[Sabremech]

2 hours ago, flyntgr1 said:

Sabremech,

You mentioned in the past that the spinner is your biggest issue on price.  If I remember correctly, you mentioned some composite spinners reasonably priced available to the experimental market.  With the news of the Dynon STC and the Part 23 rewrite, do you think you will be able to offer something like the composite spinner? 

Hi Flyntgr1,

That's a good question. I'm looking to have carbon fiber spinners manufactured as well as certified spinners as an option. Being part of the Powerplant is going to probably not make the certification easier.

Thank you,

 David

[Hank]

<but I like the look of my polished spinner . . . >

Still following your progress with bated breath!

[Sabremech]

35 minutes ago, Hank said:

<but I like the look of my polished spinner . . . >

Still following your progress with bated breath!

Hank, you can still have a polished 201 spinner. It would just cost a little more. 

David

[Raptor05121]

I always fly LOP. Just my $0.02

[bradp]

David could replacement spinners be manufactured by you or another under the owner produced parts allowance?  

[Bob_Belville]

10 hours ago, daver328 said:

Love love love our polished spinner!

 

 

Me too. David, probably asked and answered but I already have a Scimitar prop and spinner to go with the ARI cowl on a '66E. Will this spinner fit with your new cowl? 

 

[Sabremech]

6 hours ago, bradp said:

David could replacement spinners be manufactured by you or another under the owner produced parts allowance?  

Hi Bradp,

I could manufacture spinners for my STC if I chose to. It would just add to the certification cost, testing requirements and the time to get the project certified. I'm going to have a decision soon in regards to spinner and back plates as I want to get the project submitted to the FAA and in process. 

Hi Bob,

You have what I started with for my mod. Your spinner will work and the kit price to you will be less as no new spinner is required. 

Thanks,

 David

 

[FloridaMan]

I don't know how much use this is, but Hartzell does provide STC pricing for spinners if you include it as part of the STC. 

[MyNameIsNobody]

3 hours ago, Sabremech said:

Hi Bradp,

I could manufacture spinners for my STC if I chose to. It would just add to the certification cost, testing requirements and the time to get the project certified. I'm going to have a decision soon in regards to spinner and back plates as I want to get the project submitted to the FAA and in process. 

Hi Bob,

You have what I started with for my mod. Your spinner will work and the kit price to you will be less as no new spinner is required. 

Thanks,

 David

 

David: Please provide a listing of spinners that WILL work with your mod "as is".  Thank you.

[MyNameIsNobody]

On April 13, 2016 at 4:47 PM, daver328 said:

 

1) Header exhaust (more efficient) systems combined with more efficient intakes are not gadgets. They're proven modifications that show well documented performance improvements in automobiles and aircraft alike. It's not rocket surgery. ;-)  .... It is decades of proven performance. It's greater intake flow with less exhaust back pressure - researched, documented, charted, printed, readily available. 

SCIENCE. 

Common knowledge.

Your Japanese car-tuner remark is way off-base.

I am a conservative advocate, and I dare say the combination PowerFlow Exhaust with the Challenger Intake significantly improved our O-360. Couldn't care less what you think. I know. Firsthand. 

2) Other fuselage mods like this cowl David is developing are proven science. The limiting and reduction of parasitic drag. Yeah, science: 201 windshield, flap /aileron gap seals, elevator rudder hinge covers, wing root/tail rotor fairings. A few dumb aeronautical engineers like Al Mooney and some LoPresti guy thought it was science. They took an F like yours and made it into a 201 mph plane. Crazy kids bolting on parts! I guess they had the right tune playing on their laptops?

 

So is putting more HP in an airframe vs filters & exhaust mods...There is an OEM solution.  Get an E.

Edited April 14, 2016 by MyNameIsNobody

[rbridges]

40 minutes ago, MyNameIsNobody said:

So is putting more HP in an airframe vs filters & exhaust mods...Thereb is an OEM solution.  Get an E

Getting an E knocks me out of the Cool crowd!

[Bob_Belville]

41 minutes ago, MyNameIsNobody said:

So is putting more HP in an airframe vs filters & exhaust mods...Thereb is an OEM solution.  Get an E

Some of us have an E. And the Challenger Air Filter. And the PFS tuned exhaust. And of course PowerBoost Ram Air.

What do we win? 

 

 

[Bob_Belville]

2 minutes ago, rbridges said:

Getting an E knocks me out of the Cool crowd!

Would you rather be Cool or Extremely Super?

[MyNameIsNobody]

1 hour ago, Bob_Belville said:

Some of us have an E. And the Challenger Air Filter. And the PFS tuned exhaust. And of course PowerBoost Ram Air.

What do we win? 

 

 

"Tuner Boy" status with all rights, priviledges and honors.  Check your mail for your "Super" secret decoder ring.  Crummy commercial to follow...

Edited April 14, 2016 by MyNameIsNobody

[MyNameIsNobody]

Just another way to get there Dave.  I think you do need a vacation.  Have a safe hopefully LOP trip.

[Sabremech]

On ‎4‎/‎14‎/‎2016 at 1:10 PM, MyNameIsNobody said:

David: Please provide a listing of spinners that WILL work with your mod "as is".  Thank you.

I will work to get a list together.

 Thank you,

 David