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  #311  
Old 01-25-2019, 05:17 PM
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kentlik kentlik is offline
 
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Location: Oregon
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Quote:
Originally Posted by ClayR_9A View Post
I'd go with braided steel covered flex lines from TS Flightlines for the brake lines from the fuse to the calipers. Also the fuel lines from the tanks to the valve. And the fuel vent lines from the tank to connect to solid aluminum lines once they get inside the fuselage.

I've had to uninstall/reinstall my tanks so many times and flare fittings seem to get worse every time you remove/reinstall them. Also, any vibration eventually causes cracks at the flare if they aren't perfect.
This is good information, thank you.
I am going to go with flex for the brake lines to the caliper certainly. I am currently working on the fuel lines from the valve to a bulkhead fitting on the fuse and was considering flex from there to the fuel tank. Not sure that is a good or bad idea yet.

What I did want to say is that I ordered some fittings from Andair and they arrived in Portland OR. in less than two days!



That is FAST!
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  #312  
Old 02-05-2019, 09:43 AM
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kentlik kentlik is offline
 
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Quote:
Originally Posted by ClayR_9A View Post
I'd go with braided steel covered flex lines from TS Flightlines for the brake lines from the fuse to the calipers. Also the fuel lines from the tanks to the valve. And the fuel vent lines from the tank to connect to solid aluminum lines once they get inside the fuselage.

I've had to uninstall/reinstall my tanks so many times and flare fittings seem to get worse every time you remove/reinstall them. Also, any vibration eventually causes cracks at the flare if they aren't perfect.
Roger that. I think that is a good way to go.
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  #313  
Old 02-23-2019, 08:05 PM
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kentlik kentlik is offline
 
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Default Fuel lines

Got back to the fuel lines, need a return so I spent a lot of time researching
the best way to do it. At least I think it is currently.





I have some more pic's to take but it is cold out there...
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  #314  
Old 02-27-2019, 12:20 PM
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kentlik kentlik is offline
 
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Location: Oregon
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Default bunch of 90? bends...

Start of fuel mockup on the bench. Kitchen remodel bench.





I looked at the standard Vans valve and it had 90? bends.

Now I worked for a time in fluids and controls at an engineering firm dealing with prototypes and we avoided 90? bends like the plague in pneumatic systems. Low pressure systems, 50-250psi. I am going to have to do some semi-scientific empirical testing on this to satisfy myself this is GTG as I don't have four different types of engineers to get free information from hahaha!
Good news is I can read!
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  #315  
Old 02-28-2019, 10:29 AM
BruceW BruceW is offline
 
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Kentlik.

You have seen the stock RV-7 boost pump, check valve, filter contraption with all the plumbing? Looks like a thermal detonator. Lots of bends, and seems to work just fine.

Bend on.

(oh, dont forget to add the sleeve before you flare the end. Ask me how many time I know.)
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  #316  
Old 02-28-2019, 11:16 AM
dtw_rv6 dtw_rv6 is offline
 
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Can you punch holes in those side bulkheads and route through them?
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  #317  
Old 02-28-2019, 02:03 PM
TS Flightlines TS Flightlines is offline
 
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Does take quite a bit of thought to get all of that stuff under the stock covers, ESPECIALLY with the NPT ports. Our way might not be the least expensive, but certainly the least headaches. BUNCHES of them flying without issue.

Tom
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  #318  
Old 03-01-2019, 10:41 AM
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kentlik kentlik is offline
 
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Quote:
Originally Posted by BruceW View Post
Kentlik.

You have seen the stock RV-7 boost pump, check valve, filter contraption with all the plumbing? Looks like a thermal detonator. Lots of bends, and seems to work just fine.

Bend on.

(oh, dont forget to add the sleeve before you flare the end. Ask me how many time I know.)

Roger that, bending on...
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  #319  
Old 03-01-2019, 10:44 AM
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kentlik kentlik is offline
 
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Location: Oregon
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Quote:
Originally Posted by TS Flightlines View Post
Does take quite a bit of thought to get all of that stuff under the stock covers, ESPECIALLY with the NPT ports. Our way might not be the least expensive, but certainly the least headaches. BUNCHES of them flying without issue.

Tom
Tom thank you!
You helped out with advice and pictures! I am just in a phase of spending money to realize this might not be the way to do it. Hahaha

Then end up buying your lines...
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  #320  
Old 03-04-2019, 02:33 PM
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kentlik kentlik is offline
 
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Default 90? Andair fittings

I ordered a few of these fittings from Andair to use in the fuel system design.

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