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  #51  
Old 06-03-2019, 09:18 AM
FlyGood FlyGood is offline
 
Join Date: Dec 2009
Location: League City, TX
Posts: 22
Default Grove 1-piece on my -8 project

I was lucky enough to inquire to Grove about a 1-piece gear when they had one remaining on the shelf. My project is now sitting on that gear. Mine is non-airfoil but I'm happy to have the structural advantages I believe it offers. Dan H is right on about the mods needed to fit the single gear structure.

One additional consideration: Since the gear is affixed with only the two outboard U fittings, all of it is free to flex in response to vertical landing loads. There's not much room under the center part of the gear for this flexing, which would be downward at that location. I called the Grove engineering guys and was told that normal flex would be about 1/4 inch in the center of the gear. There was less than that much room between the gear cross-member and the cover panel connecting the two Z channels fwd and aft of the gear. Having seen Grove video of extreme landing loads on 1-piece gear (for other airplanes) and seeing INCHES of flex in the central part of the gear, I did two things. I put 1/4 inch spacers under the Z-channels to provide more clearance between the gear and the cover plate, and I made the cover plate removable, and light weight, so that it would, hopefully, be the only thing damaged if the gear is ever flexed enough to contact it. This required a little adjustment to the lower skins in the landing gear area, but in the final analysis, the extra 1/4 inch of depth is visually difficult to detect.

One big benefit: Getting the gear aligned during installation was a snap. Two measurements to ensure that the unit was perpendicular to the aircraft center line and you're done.
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  #52  
Old 06-03-2019, 01:55 PM
DennisRhodes DennisRhodes is offline
 
Join Date: Jul 2007
Location: Taylorsville, Ga
Posts: 728
Default

I have a single piece of Aluminum stock that was destined for a single part gear leg. I dont have the dimensions with me but could measure when I return home if someone interested. The flat stock Al looks to be sufficient to machine a single piece leg for an 8. Let me know .
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  #53  
Old 06-04-2019, 07:56 PM
Reddsky1 Reddsky1 is offline
 
Join Date: Apr 2006
Posts: 55
Default Grove gear

I posted this exact question 4-5 years ago. I even offered to buy 10 up front if I could only get enough people to commit. No response. Iím in if someone wants to head up the effort. Just let me know where to send the check.
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  #54  
Old 06-04-2019, 08:29 PM
Reddsky1 Reddsky1 is offline
 
Join Date: Apr 2006
Posts: 55
Default One piece Grove Gear

Why is this thread popping up again? Is there interest in this? It was last started in 2011.
Reddsky1
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  #55  
Old 06-04-2019, 09:23 PM
Foghorn Foghorn is offline
 
Join Date: Feb 2018
Location: Virginia Beach
Posts: 50
Default

I started it again because I bought a project from a friend. When I was going through all the parts he had one piece grove gear. So I did a search. These are NOT one piece airfoil gear. I still havenít heard from anyone that is actually flying with them.
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  #56  
Old 06-09-2019, 09:30 PM
A2Jake's Avatar
A2Jake A2Jake is offline
 
Join Date: Mar 2012
Location: Bismarck, Missouri
Posts: 68
Default Flying - 4 Attach points

I have been flying with one piece gear !
4 attach points.
I have installed 2 sets of this gear so far and am very pleased with the performance.

This was the first one on a QB fuselage that does not have the removable center plate, made a long bucking bar and installed solid rivets to finish.

The second installation I made a removable center plate, will show details in another post.

START


REMOVING INTERCOASTAL RIB










MILLED RELIEF STEP .200 DEPTH


NEW ALUMINUM INNER ATATCH SPACER PLATES MILLED TO HEIGHT




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  #57  
Old 06-09-2019, 09:31 PM
A2Jake's Avatar
A2Jake A2Jake is offline
 
Join Date: Mar 2012
Location: Bismarck, Missouri
Posts: 68
Default

Install with removable center plate




























Store bought leg fairings are not available.
Original Vans on left - New lay-up fairing on right
Slightly thicker
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Last edited by A2Jake : 06-17-2019 at 09:38 PM. Reason: Added photos
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  #58  
Old 06-14-2019, 03:07 PM
Reddsky1 Reddsky1 is offline
 
Join Date: Apr 2006
Posts: 55
Default One piece gear legs

Ok, if anyone is interested in. One piece AIRFOIL RV-8 gear legs let me know.

Terry Parsons
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  #59  
Old 08-02-2019, 05:41 PM
Foghorn Foghorn is offline
 
Join Date: Feb 2018
Location: Virginia Beach
Posts: 50
Default

Quote:
Originally Posted by 8CW View Post
There is not enough room to get the vent lines down past the horizontal portion of the gear using the intended routing so I am going to use the method the Rocket guys use. I am also going to bring the brake line fitting straight up into the gear tower from the top of the gear.
Can you elaborate on how the rocket guys do the vent line? Iím installing fuel lines now and I have the one piece grove gear. I was thinking Iíd just drill an additional hole forward of the Vanís vent hole.

Thanks,

Jeff
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  #60  
Old 08-02-2019, 06:25 PM
izzybear's Avatar
izzybear izzybear is offline
 
Join Date: Sep 2010
Location: Dallas, TX
Posts: 316
Default fuel vent routing with Grove one piece gear

Jeff,
You are right on target with your thinking - you will need to drill a new vent hole forward of the standard Van's vent hole to clear the one piece gear. See the pictures from A2Jake above :
If you look at the 6th picture up from the bottom, you will see the finished vent line exiting the bottom of the fuse.

The picture after that one (-5) shows the connected vent line (middle left of picture) inside the gear tower. The disconnected line is the brake line and you can see where it will connect to the Grove gear internal brake line in that picture too.

The third picture up shows the bottom of the fuse with the gear covers on and you can see the vent tube "stub" sticking out into the air steam.

The tank vents are installed in front of the one piece gear, and the one piece gear is installed (slides in) from the front of the fuse, so make sure you allow for the installation and removal (if needed) of the gear and the vents. That is why the last few inches of the fuel vent are removable. I did my vents in a similar way.
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Last edited by izzybear : 08-02-2019 at 06:30 PM.
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