Matronics Email Lists Forum Index Matronics Email Lists
Web Forum Interface to the Matronics Email Lists
 
 Get Email Distribution Too!Get Email Distribution Too!    FAQFAQ   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   RegisterRegister 
 ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in 

Damn baffles

 
Post new topic   Reply to topic    Matronics Email Lists Forum Index -> TeamGrumman-List
View previous topic :: View next topic  
Author Message
teamgrumman(at)yahoo.com
Guest
PostPosted: Thu Apr 14, 2011 5:58 pm    Post subject: Damn baffles Reply with quote
Can you believe almost $1200 for a set of baffles?
Not only that, but, I still didn't get the hole spacing right on the #4/oil cooler match up.
Damn. Lots of scrap aluminum.


[quote][b]

- The Matronics TeamGrumman-List Email Forum -
 

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?TeamGrumman-List
Back to top
aa5_driver(at)yahoo.com
Guest
PostPosted: Thu Apr 14, 2011 8:31 pm    Post subject: Damn baffles Reply with quote
Your not doing it right! Samples are done in paper or vinyl before hard product is made. We do this stuff all the time.

Kevin

Gary Vogt <teamgrumman(at)yahoo.com> wrote:

Quote:
Can you believe almost $1200 for a set of baffles?

Not only that, but, I still didn't get the hole spacing right on the #4/oil
cooler match up.

Damn. Lots of scrap aluminum.


- The Matronics TeamGrumman-List Email Forum -
 

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?TeamGrumman-List
Back to top
teamgrumman(at)yahoo.com
Guest
PostPosted: Thu Apr 14, 2011 11:53 pm    Post subject: Damn baffles Reply with quote
I could be a smart ass and say, "Damn. That's a great idea. Who would have thought?"

But I won't. Trust me paper won't get you to the .010 to .020 tolerance I build my baffles to. A coat hangar can be used to size brake line too. It'll get you close. But it won't fit worth a damn.

When you install my baffles (the ones I've finalized), there is no trim to fit. On the baffles that failed MY criteria, it was because the holes in the #4 cylinder baffle with the holes for the nut plates, are off .050 inches. The holes in the left rear baffle for the oil cooler puts the oil cooler .025 inches too far outboard. Doesn't fit well without pushing and shoving. 15 pieces were scrapped.

Now, I know I could have left all that bullshit trim-to-fit, that's the quality other STC holders build to (just ask Scott Jerigan). Why not do it right?

Regrettably, the Rev A version of the left rear inner baffle wasn't approved by the FAA. Long story. So, it will need some trim to fit. The rest are minor changes. I can do those.
Gary
Sent from my iPad

On Apr 14, 2011, at 9:26 PM, Airport Bum <aa5_driver(at)yahoo.com> wrote:

Quote:


Your not doing it right! Samples are done in paper or vinyl before hard product is made. We do this stuff all the time.

Kevin

Gary Vogt <teamgrumman(at)yahoo.com> wrote:

> Can you believe almost $1200 for a set of baffles?
>
> Not only that, but, I still didn't get the hole spacing right on the #4/oil
> cooler match up.
>
> Damn. Lots of scrap aluminum.







- The Matronics TeamGrumman-List Email Forum -
 

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?TeamGrumman-List
Back to top
flyv35b(at)minetfiber.com
Guest
PostPosted: Fri Apr 15, 2011 5:09 am    Post subject: Damn baffles Reply with quote
On the baffles that failed MY criteria, it was because the holes in
the #4 cylinder baffle with the holes for the nut plates, are off .050
inches. The holes in the left rear baffle for the oil cooler puts the
oil cooler .025 inches too far outboard. Doesn't fit well without
pushing and shoving. 15 pieces were scrapped.
>

Why would you have to scrap 15 pieces? Couldn't you just make a new
rear baffle-the one the cooler is attached to?

- The Matronics TeamGrumman-List Email Forum -
 

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?TeamGrumman-List
Back to top
aa5_driver(at)yahoo.com
Guest
PostPosted: Fri Apr 15, 2011 6:25 am    Post subject: Damn baffles Reply with quote
Gary,I'm just giving you a hard time, you know one smart ass helping another.We do often make multiple prototypes to get the close tolerances your looking for. It is a pain but it is worth it.  Of course it helps to have the equipment in house. I'm not sure if you are doing the actual design work or if you are having it done. If your having it done, you might considered finding a program that works natively in the dxf format. That will give you a lot more control over the process.Corel draw and adobe illustrator are common programs that can work in dxf, there are many others. Once you have the file, your cutter should be able to convert the dxf to whatever they use if they cannot use dxf directly.Don't forget that you can often easily exceed the mfgs production tolerances making your part require fitting to each individual engine, panel, or whatever your making the part for.Kevin--

- The Matronics TeamGrumman-List Email Forum -
 

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?TeamGrumman-List
Back to top
teamgrumman(at)yahoo.com
Guest
PostPosted: Fri Apr 15, 2011 10:25 am    Post subject: Damn baffles Reply with quote
Well, good point. Let me elaborate.
10 of the baffles are the oil cooler baffles. 5 with a large cutout. 5 with a small cutout. I should have only ordered the small ones. Too late now. The oil cooler hole itself is off too far. It needs to move in some. Shortening the entire part by .050 will do it, but then the holes to mount the oil cooler are off too much. The #4 cylinder baffle holes are too high. The oil cooler baffle won't fit without crowding the holes. These fit a lot tighter than the stock baffles. So, I'm going to change the baffles. Since I need a large oil cooler hole for my plane, everyone gets the large oil cooler hole.
Gary

From: flyv35b <flyv35b(at)minetfiber.com>
To: teamgrumman-list(at)matronics.com
Sent: Fri, April 15, 2011 6:07:23 AM
Subject: Re: Damn baffles


[quote][b]

- The Matronics TeamGrumman-List Email Forum -
 

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?TeamGrumman-List
Back to top
teamgrumman(at)yahoo.com
Guest
PostPosted: Fri Apr 15, 2011 10:25 am    Post subject: Damn baffles Reply with quote
I'm drawing them myself in AutoCad.

From: Airport Bum <aa5_driver(at)yahoo.com>
To: teamgrumman-list(at)matronics.com
Sent: Fri, April 15, 2011 7:22:32 AM
Subject: Re: Damn baffles


Gary,

I'm just giving you a hard time, you know one smart ass helping another.

We do often make multiple prototypes to get the close tolerances your looking for. It is a pain but it is worth it. Of course it helps to have the equipment in house.

I'm not sure if you are doing the actual design work or if you are having it done. If your having it done, you might considered finding a program that works natively in the dxf format. That will give you a lot more control over the process.

Corel draw and adobe illustrator are common programs that can work in dxf, there are many others.

Once you have the file, your cutter should be able to convert the dxf to whatever they use if they cannot use dxf directly.

Don't forget that you can often easily exceed the mfgs production tolerances making your part require fitting to each individual engine, panel, or whatever your making the part for.

Kevin

--

- The Matronics TeamGrumman-List Email Forum -
 

Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:

http://www.matronics.com/Navigator?TeamGrumman-List
Back to top
Display posts from previous:   
Post new topic   Reply to topic    Matronics Email Lists Forum Index -> TeamGrumman-List All times are GMT - 8 Hours
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You can download files in this forum


Powered by phpBB © 2001, 2005 phpBB Group