JanRV6UK
Well Known Member
I have a question about the two AN4 bolts securing the bracket assembly – F-631C (the two angles that the roll bar sits in) The drawing show -10 as a revision from a -6
Now a -10 is way to long .. will need a stack of washers to work. -6 looks much more sensible. So I think I have a made a mistake on the material build up.
Start from the inside working out – 1/8 angle + .040 seat back + .062 for the plate that sits on top of the seat back – then finally you have the bracket assembly F-631C made up of one angle 1/8 and 3/16 on top of each other … add that up and you get .5395 + primer on all parts … about .5600 …
Why the -10 ? Maybe to pre-load the bolt in tension … i.e. have a longer bolt to give more stretch when correct torque is applied for a AN4 bolt ??
Or a simple Van mistake .. or have I missed something fundamental here ??
To late in the evening ... -10 bolt is fine .. Helps if I pick the right bolt to start with !!
Now a -10 is way to long .. will need a stack of washers to work. -6 looks much more sensible. So I think I have a made a mistake on the material build up.
Start from the inside working out – 1/8 angle + .040 seat back + .062 for the plate that sits on top of the seat back – then finally you have the bracket assembly F-631C made up of one angle 1/8 and 3/16 on top of each other … add that up and you get .5395 + primer on all parts … about .5600 …
Why the -10 ? Maybe to pre-load the bolt in tension … i.e. have a longer bolt to give more stretch when correct torque is applied for a AN4 bolt ??
Or a simple Van mistake .. or have I missed something fundamental here ??
To late in the evening ... -10 bolt is fine .. Helps if I pick the right bolt to start with !!
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