Quickbuild assembly and riveting inspection. After long consultation with lucio regarding the need to inspect various parts of the fuselage assembly we decided to remove the gear mount and to reinstall. The left assembly has been very difficult to remove and we decided to check with VANS technical support if it was normal to have the bolts so tightly fitting in the assembly. We also decided to check with VANS on the torque values. Below the response from VANS Technical support.

Disassembled Left Gear mount in order to remove foot panel. Difficult to remove the screws, they seem to jam somehow. Finally managed to remove the last screws with Lucio's and Marco's help. Most of the nuts were clearly over torqued. Asked VANS Support for clarification and they confirmed torque should be as indicated in Section V for AN3 nuts. In addition they indicated that sometimes a small adjustment to the WD-1021 Gear mount is necessary, altough not often.

Below the email exchange with VANS
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Hi,
first of all thank you for all the good work you are doing in these troubled times.

i have the need to remove both landing gear mounts from my quick build fuselage, but i noticed a couple of things where i need your support:

1. All the nuts seem to be over torqued. I didn't find a specific torque requirement, therefore i assumed the standard AN3 torque would apply (section 5 page 5-20) , but when removing the bolts i had to apply in at least 70% of the cases a very significant force to loose the nuts. Any specific reason for that? When reinstalling the mount do i need to use the normal torque indication or a different value?
RESPONSE
When working with standard hardware like this the torque values shown in section 5 of the build manual is what should be followed. There are only a few instances in our aircraft where a specific torque may be called out and I can think of no instances like this in the RV-10 off hand.
2. Removing the bolts is very difficult. they seem to be jammed for some reason and only few of them came out easily as i expected. In most cases i had to apply significant pressure with a piece of wood and an hammer….When sliding the bolts into the longeron holes they slip in very easily and the sit perfectly, but with the WD-1021 is a different story. I wonder if i should slightly enlarge the WD-1021 holes. Please let me know if that is correct.
RESPONSE
Bolts between a welded assembly like the 1021 and center section can be snug but given that they are installed I have no doubt that they can be removed and reinstalled. Using a little force to persuade them is not a problem, we don't expect every bolt to just slide in when pushed with a fingertip. In some cases I have enlarged/reamed holes in landing gear brackets but typically is not needed.
Both situation apply on both WD-1021 (left and right) with some slight differences. So far i managed to remove only the WD-1021 Left and before removing the bolts on the right side, i would like to have your view.

thanks in advance for your help.

ciao
paolo