Cog Belt Break Continued.
I have been in contact with several other owners who have suffered in-flight cog belt breaks. The following photos tell the story themselves. It was obvious that the cog belt broke from "under-tensioning" most likely caused during the engine start sequence as discussed earlier. This is one more example of what can happen with the stock cog belt tensioner configuration.

Above is what happened to the cog belt while the helicopter was in flight


Above shows the cog belt tensioner that was on the ship.


Above is the result of the break on the ship.


This ship will need a lot of work to once again become airworthy.

What tensioner are you running on your ship?