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01-23-2010, 08:17 PM
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Join Date: Nov 2005
Posts: 1,256
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Andair pump mounting question
I'm building all the cross beam assemblies and such for the Andair pump, and I've run into a question...how are people dealing with the holes/platenuts on the sides? That is, the cross beam assemblies have small angle clips that have platenuts on the "inside". Fair enough...but then, since these cross beams go underneath F-782C, it seems the options are a) countersink the #8 hole in the clip, dimple F-782C and use a flush head screw, or b) somehow figure out where said hole(s) in the clip and F-782C end up on the floor stiffeners and drill them (which would be a blind drill...hole duplicator needed?) and screw all 3 pieces together.
If the former, doesn't look like there's enough material on the clip do a countersink for a #8 dimple in the F-782C, and if the former (which makes a little more sense), how are you locating the holes to drill the stiffener?
Also, are there any other tips/tricks for this out there? Seems pretty straightforward so far (except for this).
TIA
Steve
__________________
Steve "Flying Scotsman"
Santa Clarita, CA
PP-ASEL, ASES, Instrument Airplane
RV-7A N660WS flying!
#8,000
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01-23-2010, 11:02 PM
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Join Date: Apr 2006
Location: Okemos, Michigan
Posts: 45
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Steve,
Just finished my mounting 2 or 3 days ago. I had previously drilled holes in the floor stiffeners and F-782C and decided to use those to attach the entire assembly to the floor. To mount the pump I did exactly what you refer to in choice "a" - I dimpled the side flange of F-782C and used a CS screw to attach F-782C to the nutplate on the cross beam angle clip. Works great.
What are you doing about the BH375 fitting? It is not included and it is very expensive. I emailed Andair twice but did not get a reply about other options to pass through the firewall.
Good luck!
Steve
__________________
Steve Houghton
RV7a
Okemos, MI
N807SH
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01-23-2010, 11:34 PM
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Join Date: Nov 2005
Posts: 1,256
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I'm just going to use an AN bulkhead fitting per the plans. No need to pay extra for the Andair fitting as far as I can tell. The pump, yeah...that buys you a *lot* (none of that tubing and nonsense). But I can't see any advantage to the Andair pass-through.
Thanks for the info on the cross beam attachment. I was thinking that would be the simplest solution...then I can put a couple of platenuts elsewhere (per the plans, plus anyplace else that seems reasonable, like close to the cross-beams) for holding the cover firmly in place.
__________________
Steve "Flying Scotsman"
Santa Clarita, CA
PP-ASEL, ASES, Instrument Airplane
RV-7A N660WS flying!
#8,000
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01-30-2010, 04:19 PM
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Join Date: Mar 2008
Location: Anacortes, WA
Posts: 823
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Andair Pump Mount
I just did the Andair Pump mounting. You can read abou it and see photos on
http://www.mykitlog.com/users/displa...=96145&row=139
I built the angles, and cover first, then measured where on the floor rib holes needed to be. Yes this was kind of a blind drill rather than a match drill. But it worked okay. Since holes get enlarged for #8 screws I was able to move them slightly to accommodate platenut location on angles. I also ordered Van's pump cover kit and cut it down in size to just fit over the Andair pump.
have fun
__________________
Steve Lynn
RV-7A
Flying Phase I
Anacortes, WA
www.mykitlog.com/sglynn
Last edited by sglynn : 05-08-2010 at 09:18 AM.
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02-01-2010, 01:24 AM
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Join Date: May 2007
Location: salem Oregon
Posts: 1,023
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Guys, I was at Vans the other day and they NOW offer the new cover & mounting tray for the Andair pump & filter on the 7/9. Talk to GUS at VANS.The price is $94 I believe. Ron
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04-06-2010, 02:41 PM
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Chief Obfuscation Officer
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Join Date: May 2005
Location: Livermore, CA
Posts: 1,110
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Quote:
Originally Posted by ron sterba
Guys, I was at Vans the other day and they NOW offer the new cover & mounting tray for the Andair pump & filter on the 7/9. Talk to GUS at VANS.The price is $94 I believe. Ron
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Anybody have any details or pictures of this kit? I don't see it listed on the Van's site.
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04-06-2010, 03:30 PM
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Join Date: Mar 2008
Location: Anacortes, WA
Posts: 823
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Andair Cover Kit
I recently installed the Andair pump and covers from Van's. I cut my cover down to size a little. You can see it at :
http://www.mykitlog.com/users/displa...=96150&row=104
Go forward and backward from this page and you'll see stuff about it.
__________________
Steve Lynn
RV-7A
Flying Phase I
Anacortes, WA
www.mykitlog.com/sglynn
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04-06-2010, 04:05 PM
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Join Date: Jan 2005
Location: St. Paul, MN.
Posts: 4,792
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04-06-2010, 05:39 PM
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Join Date: Jul 2007
Location: Molalla, Oregon
Posts: 955
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I'm in the middle of this project right now, too. If you're building an A model, you need to run the brake lines through there, too, so those two cross beams will need to have cutouts to allow the brake lines to pass through underneath. Hope that makes sense. I don't have any pics yet.
Instead of the small angle clips, I'm considering just riveting the cross beams to the F-782C with flush rivets. I don't see any reason why not to, and it avoids the issues with drilling, dimpling or countersinking, more nutplates, etc. on the floor stiffeners. I already have those drilled and nutplates installed on the F-782C. Any comments?
Regarding the BH375 fitting from Andair for the firewall pass-through, I checked into it and it costs $53.00. I was at Vans the other day and asked about this. On their recommendation, I just bought a regular AN 90-degree fitting. Later on, I had my technical counselor here for a visit and I asked him about the location for placement. Then I drilled and installed it. Here are some pictures:
.JPG)
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04-06-2010, 06:34 PM
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Chief Obfuscation Officer
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Join Date: May 2005
Location: Livermore, CA
Posts: 1,110
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Thanks guys. I am familiar with what needs to be done using the current set-up, I was just looking to see if anyone has any details on the Andair specific parts Ron mentioned in his post. I am curious to see what parts Van's has produced specific to the Andair pump.
The BH375 came with the Andair pump/filter/valve combo I bought at OSH last year, but I will probably be steel fittings for all FW penetrations.
Last edited by RV7Factory : 04-06-2010 at 09:54 PM.
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