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Old 04-14-2017, 10:58 PM
E. D. Eliot E. D. Eliot is offline
Join Date: Dec 2005
Location: San Pedro
Posts: 872
Default Matco wheel assembly help

Ok - I messed up and 'misplaced' two washers that go on my main gear assembly. These are listed on PP 35-04 figure 3. They are listed as 'washer' and are placed between the wheel bearing and the retaining nut. Called Van's and they say to call Matco. I will do that.

Can someone please tell me which wheel assembly is used on the RV-12? Need that info before I call Matco. Thanks in advance - I appreciate you all.
Building finally
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Old 04-14-2017, 11:25 PM
BruceEicher's Avatar
BruceEicher BruceEicher is offline
Join Date: Feb 2012
Location: Wilsonville/Aurora KUAO Oregon
Posts: 636

The one time I called Matco they knew excactly what I needed for my Van's model. Their website showed many more options for other aircraft and confused me.
Bruce, Katie, Hana and RV-8 HulaGirl
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Old 04-14-2017, 11:39 PM
John-G John-G is offline
Join Date: Jan 2012
Location: Northeast Ohio
Posts: 487

Ed ... I believe the part number you are looking for is MHMHE51B. I'm not at the hangar to verify that but I think that is correct .... I do know for a fact the main wheels are marked as MHE51B.

Happy building,
RV-12 Wings, Empennage, Fuselage, Finishing, Avionics and Powerplant kits all completed
Now Flying!!

Dues paid until September 2018
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Old 04-15-2017, 12:31 AM
E. D. Eliot E. D. Eliot is offline
Join Date: Dec 2005
Location: San Pedro
Posts: 872
Default Thank you for the quick answer

I will try and find the part tomorrow and then call Matco on Monday. Thanks again - I appreciate you guys.
Building finally
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Old 04-15-2017, 07:25 AM
mnmisage mnmisage is offline
Join Date: Feb 2010
Location: Austin, Texas
Posts: 37

I am on the same step and found no washer. I searched the forum for "Matco washer" and found a post mentioning that Matco changed the design quite some time ago to integrate the washer and the nut.

I am going to build on using the integrated nut/washer that Matco provided.
Mark Misage
RV-12 #327 in progress

Last edited by mnmisage : 04-15-2017 at 09:22 AM.
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Old 04-15-2017, 09:01 AM
DHeal DHeal is offline
Join Date: Sep 2006
Location: Windsor, California
Posts: 669

IIRC, on the RV-12, there is no large axle washer between the axle nut and the Matco main wheel bearing. The washer used to be shown on Van's early drawings, but it's need/use was subsequently deleted. At that time, I confirmed with Van's and Matco that no large washer is required. As always, check with Van's and Matco to verify.
David Heal - Windsor, CA (near Santa Rosa)
EAA #23982 - EAA Technical Counselor and Flight Advisor; CFI - A&I
RV-12 E-LSA #120496 (SV w/ AP and ADS-B) - N124DH flying since March 2014 - 635+ hours (as of May 2018)!
VAF donation through June 2018.
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