Bruce,
One of the volunteers told me it was 7/8. Another volunteer said no…it's full scale.
It's a fairly faithful replica…but using modern materials and construction methods.
In this case they went with a 115 hp Lycoming…flat four aircraft engine…in place of the original Rotary.
To remove any doubt of what scale it is...…here's a link to a brief video from the manufacturer..
https://vimeo.com/112241285
The video says it takes the average pilot/builder about two years to get into the air…Which seems honest.
With the museum and the volunteer building team fully engaged in the project..…It took them about a year..