ORIGINAL: csbabich
This is probably a dumb question, but what the heck.
The mounting holes on my engine (ST GS-40), are sized so a 6-32 bolt fits perfectly in the hole. However, the engine is shaped in such a way that it is impossible to insert a 6-32 bolt from the top.
I could go to a 4-40 bolt, but those seem pretty small for the size of both the engine and the mounting holes.
So my question is this: is it acceptable to bolt the engine to the mount with the bolts ''upside down''? That is, with the locknuts on top of the engine mounting flanges?
Thanks
csbabich
I do glue the bolts upside down in the maple wooden engine bearers with PVA glue. The heads of the bolts are soldered on a plate glued with 2 component epoxy on the bottom of the bearers.
After this the bottom is closed.
On top I use 2 nuts and a washer on the engine. A second lock washer between the nuts.
For me this is the best way to mount an engine on wood it keeps the bearers inside clean of oil.
To remove the bolts I use the solder iron and make them hot the PVA glue will be liquid again.
Of the top of the bolts I remove the thread so it is easy to mount the nuts.
Only important is to have the miniature tools, you must have these in the service box to mount the engine.
If you want me to show these please ask.
See my pictures.
Cees