Could you post some pictures of the mod you did to the main gear? ? ? ?
Thanks
Steve H
Moose 213
-> > Scott,
-> >
-> > Did you do anything to beef up the main gear?
-> >
-> > Ted
->
-> Short answer - yes. Long answer to follow.
->
-> As soon as I posted that I regretted. The "collapse" part was supposed to be
-> tongue in check; I don't think anyone is going to have a failure due to the
-> design under normal circumstances.
->
-> We have been over this before but it was awhile ago. The Moose gear could
-> probably withstand a drop straight down off the top of a building <grin> but
-> don't screw up and land with a side load too often. Due to the gear leg
-> being essentially straight all side loads are transferred straight up and
-> across and are trying to shear the main gear attach bolt off. The bolt is
-> in single shear. It would be better (and cost more to manufacture) if the
-> gear leg came up and then bent over horizontal and then you could have the
-> inner bracket similar to the P. Ponk modification for Cessna's
-> (
http://www.pponk.com/ look under landing gear and then beef up kit and
-> there is an exploded view).
->
-> Murphy made up Jim Moore a complete new set of gear with all 4130 steel
-> brackets (inner and outer), gear legs bent over a la Cessna and two solid
-> 1/8" aluminum plates across the front and back of the gear box. Last I
-> emailed Jim he still wasn't back in the air so no report. It weighs a lot
-> more than the standard setup. He said both his main gear bolt holes were
-> worn to an oval shape in the inner 6061 brackets. So they have already made
-> a better set of gear but don't think there is anything wrong with the
-> current set so are leaving it as is (as far as I know, which isn't much). I
-> think they will regret that once more time gets put on the fleet but I hope
-> I am wrong.
->
-> The twisting drag loads are another issue. They said it was mostly due to
-> the large Alaska wheel mod and they put out a bulletin to add the drag brace
-> behind each outer fitting (I saw that yours has those installed Ted). That
-> was supposed to fix that but I am not sure how many hours they actually put
-> on the demonstrator after the fix with the big wheels.
->
-> I added longer/bigger drag braces behind each outer gear bracket. I changed
-> the FUS 310 (which is the lower portion of the outer bracket) to steel and
-> upped the size of the outer attach bolts. I made a steel U shaped bracket
-> that goes over the top of the inner gear bracket and gear leg. The gear leg
-> slips up into this U so the bolt now goes down through the steel, through
-> the gear leg, then the MAM aluminum bracket and then through the bottom of
-> my steel U. The U shaped bracket is held in place by side flanges that pick
-> up the same bolt that hold the main bracket in place. Then there is steel
-> square tube that runs across the gear box connecting the two gear legs
-> together to give more side load protection.
->
-> Not sure if this will really do anything but I feel better. Once I get some
-> time on it I will see.
->
-> Sorry that was so long.
->
-> Scott
-> Moose 174
->
->
->
->
->
-> > -----Original Message-----
-> > From:
mike.davis@dcsol.com [mailto:
mike.davis@dcsol.com] On Behalf Of Ted
-> > Waltman
-> > Sent: Friday, April 01, 2005 9:22 AM
-> > To:
rebel-builders@dcsol.com
-> > Subject: Moose Main Gear?
-> >
-> > Scott,
-> >
-> > Did you do anything to beef up the main gear?
-> >
-> > Ted
-> >
-> > -----Original Message-----
-> >
-> > Oh, why I am at it, I still think the main gear attach set up on the
-> > SR/Moose is crap too, and that "anomaly" will arise (or collapse:) )
-> > again in the future.
-> >
-> >
-> >
-> >
-> >
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