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alpinelakespilot2000

Well Known Member
The bolts used to mount the engine are just regular AN bolts, correct?

My drawings show AN7-43's and AN7-44's. However, in Jim Norman's article http://www.vansairforce.net/articles/IllustratedGuideToEngineHanging/enginehanging.htm, he suggests that Van's bolt kit includes "close tolerance" and "very high quality" bolts.

I'm right and he's wrong, correct? :D (I hope so, because I ordered the regular AN bolts from Spruce.)

If I'm lucky, I'll get this thing hung tomorrow. Or, I'll be placing a parts order from Van's. :eek:

Thanks.
 
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AN 7 OK...

Certified aircraft use the standard AN 7 bolts... no high tolerance needed here...

Some aircraft (my Tiger as an example) also use high temp lock nuts instead of castle nuts and cotter pins... but again, standard AN 7 bolts.

...and my Vans bolt kit came with AN 7 bolts...:)

gil A
 
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alpinelakespilot2000 said:
The bolts used to mount the engine are just regular AN bolts, correct?

My drawings show AN7-43's and AN7-44's. However, in Jim Norman's article http://www.vansairforce.net/articles/IllustratedGuideToEngineHanging/enginehanging.htm, he suggests that Van's bolt kit includes "close tolerance" and "very high quality" bolts.

I'm right and he's wrong, correct? :D (I hope so, because I ordered the regular AN bolts from Spruce.)

If I'm lucky, I'll get this thing hung tomorrow. Or, I'll be placing a parts order from Van's. :eek:

Thanks.
Click to expand...

I think Jim was implying that AN bolts are high quality and tight tolerance relative to hardware store bolts that you definitely shouldn't use.

In general follow the drawings and if in doubt email Gus or the others on the help desk at the factory for clarification. That way you'll get the lightest and most economical build without gilding the lilly.

Jim Sharkey
RV6 - Wiring
 
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