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  #21  
Old 01-19-2014, 04:32 AM
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GLPalinkas GLPalinkas is offline
 
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Jason, I'm glad the inspection party went well. Always good to have 3 or 4 sets of eyes and sounds like you exceeded that.

I do have a suggestion though. The exhaust hangars work better (and break less) when they are mounted directly to the engine so that it all moves together. Attaching them to the engine mount rigidly is going to cause issues down the line. At least on my RV-6 it was an issue. I moved the mounts to crankcase bolts at the bottom of the engine and they have been much happier.

Second, it's really hard to try to remember all of your "I'll get to that later" items. I used yellow zip tie tags to mark the locations. Worked great.

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  #22  
Old 01-19-2014, 08:41 AM
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I called Larry Vetterman about the exhaust hangars a couple of years ago when I saw other people were recommending they be attached to the engine. He said that some of his exhaust designs are supposed to be mounted to the engine and some to the engine mount, and the four-pipe exhaust *must* be mounted as I have done here. Honestly, I can't see why it wouldn't be better to mount to engine as you suggest, but I'm deferring to his expertise here. I'd certainly be interested in hearing from other people with this exhaust who have mounted to both the engine and the engine mount to compare long term experience with both.
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  #23  
Old 01-19-2014, 08:49 AM
p51dplt p51dplt is offline
 
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Jason,
First off, great idea!
Second, I'm sorry I missed it. I would of loved to come down and meet you and the others, as well as lend my eyeballs. It certainly never hurts to have as many sets of knowledgable eyes look at things.
I'll be hosting a RV BBQ later this spring, hope you'll be able to make it.
Cheers!
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  #24  
Old 01-19-2014, 09:14 AM
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Mike S Mike S is offline
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Anybody comment about plastic zip ties in the engine compartment??

Some folks like them, some folks dont.

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  #25  
Old 01-19-2014, 09:19 AM
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Quote:
Originally Posted by Mike S View Post
Anybody comment about plastic zip ties in the engine compartment??

Some folks like them, some folks dont.
All zip ties firewall forward are Tefzel (and blue for easy identification). They have the same thermal limits as the wires they're wrapped around.
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  #26  
Old 01-19-2014, 04:37 PM
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Lemmingman Lemmingman is offline
 
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Hi Jason,
On post #20, in the last picture...the one of the gear mount, I see two things in the background that stuck out at me.

There is a black box in the background that has what appears to be a nut plate attach point with no nut plate. I cant see the whole box, so I cannot see how it is attached, but it just stuck out for me.

The boot for the solenoid the background isnt covering the terminal well. Seems to just need some wiggling.
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  #27  
Old 01-19-2014, 06:55 PM
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Champ Champ is offline
 
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Default 4 Pipe Exhaust Support

Jason - regarding your post #22. I also called Vetterman about hanging the 4 pipe exhaust on my 8 from the engine. Clint Busentiz said they had no problems with hanging off the engine mount and it was normal to do it this way. I did however take a crack at hanging off the sump, sent Clint pictures to which he said the installation looked fine, and left it that way. Not yet flying so I can't comment on how it held up.

I'm attaching a couple of pictures of the area. The hangers are a little hard to see because of other stuff now in the way.

An inspection party is a great idea.

For now it might be worthwhile posting a bunch of pictures of my engine installation - once it's finished. I'm always amazed at how folks on VAF spot things that need attention - what a great resource.

[IMG][/IMG]

[IMG][/IMG]
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  #28  
Old 01-19-2014, 06:57 PM
David Paule David Paule is offline
 
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On some places where the bolt threads seem too long, perhaps you can use one size shorter bolt. And maybe you can use the thinner washers there too. Both add up to weight savings.

Dave
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  #29  
Old 01-19-2014, 08:14 PM
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Quote:
Originally Posted by Lemmingman View Post
Hi Jason,
On post #20, in the last picture...the one of the gear mount, I see two things in the background that stuck out at me.

There is a black box in the background that has what appears to be a nut plate attach point with no nut plate. I cant see the whole box, so I cannot see how it is attached, but it just stuck out for me.
That is the battery box. There are several pre-punched holes for nut plates, but not all are used. That is installed according to plans.

Quote:
Originally Posted by Lemmingman View Post
The boot for the solenoid the background isnt covering the terminal well. Seems to just need some wiggling.
Thanks for spotting that. We pulled that back to hook up an external power source and I forgot to put it back.
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  #30  
Old 01-19-2014, 08:29 PM
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Quote:
Originally Posted by Champ View Post
Jason - regarding your post #22. I also called Vetterman about hanging the 4 pipe exhaust on my 8 from the engine. Clint Busentiz said they had no problems with hanging off the engine mount and it was normal to do it this way. I did however take a crack at hanging off the sump, sent Clint pictures to which he said the installation looked fine, and left it that way. Not yet flying so I can't comment on how it held up.
Hey Dennis,

If you have the pictures you sent to Clint, I'd like to take a look at them. Did you basically build the hangars like Larry recommends (stainless tubing with 1/4" of spacing between the ends inside the rubber tubing? Are the hangars parallel or do they splay in or out?

thanks,
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