Originally Posted by
flywilly
Yes the OS mounts are a tad pricey, but they are machined and not cast (like the old CB mounts) and pretty bullet proof. If needed you can drill and tap more holes in them; I've done it, but I always use the rear holes and just add holes for the front mounting lug bolts.
And yes, you can soft mount the entire OS mount by using Lord mounts to mount the engine mount to the airframe.
Good Call, David!
Will, have you had a problem drilling the front holes for 20 mm spacing 60 class engines (e.g. YS) on the mounts? Do they not end up being too close to the existing front OS holes? With a 5 mm center separation, perhaps that's just enough without the existing holes posing a problem.
Their quality is indeed excellent if perhaps also a little heavy compared to composite mounts.
David