I am helping my brother build a Hanger 9 Alpha Trainer for him to learn on, and I'm having some problems with installing the Evolution engine in the mount. The trouble is, the remote needle valve is directly over one of the mount screw that holds the engine to the mount, and I cannot for the life of me figure out how to screw it in. Here are some pictures to show the problem.

remove the 2 front screws completely.

slide the engine forward, giving access to the rear screw.

Tighten the screw a little.. slide the engine back again. check to see if the engine now forces the retaining bar up appx 10 deg when the engine is slid back. (if not... slide it forward and tighten the screw a little more)

Use pliers to gently pull the bar down so you can insert the front screw.

You could also mount the engine direct to the mount
doing away with that universal mount strap.
I personaly dont like that type of mounting system.
I mount all my engines by the way of the engine mount
holes of the engine block.

Did this engine come with the plane? If so, then it's a manufacturing defect. Otherwise it's just bad luck. I like real engine mounts too, but this will work. It looks like even if you used a socket head bolt and a ball driver that you wouldn't be able to get at it. I think FHHuber's idea will work best for you, but I wouldn't like having to do it that way.

The mount looks like the POS that came with my Tower Voyager. I went a spent the $5 on a light weight composite mount, aside form a nier mount, the saved weight allowed less weight in the tail for CG set up.

Not a manufacturing erro... just some poor planning by the guys the set up the ARF package deal. Its not hard to get around. (as I posted...)

The clamp type mounts are OK...not the best, but they work. One reason for using them on trainers... the engine is more likely to slip in the clamp mount in a crash... so there's a MARGINALLY lower chance of bending the crankshaft.

That's what I meant

From my experiance while learning to fly, I remember numerous hard landings, Prop strikes, and nose overs. I would replace the mount with something other than the clamp style. Yes, crank damage possibilties would increase but you would eliminate thrust angle changes by the afore mentioned mishaps.

Just my 2 cents worth.

i used this engine on a spad i built. gr8 engine by the way. i just used the mounting holes on the engine and screwed it right to the engine mount.