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WmInce

A glance at the Bristell 915is

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10 minutes ago, Doug G. said:

Carbon Cub does it with 185 hp engine for takeoff only - "5 min. max".

 

I though you meant a placard saying "don't exceed speed X" and not an rpm limit.  The rpm limit is definitely doable, but it would probably have to be very low in this case, maybe even below where Rotax recommends running the engine.  "RPM greater than 4500rpm 5min max" would be a hilarious placard to see!  

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3 hours ago, Doug G. said:

Carbon Cub does it with 185 hp engine for takeoff only - "5 min. max".

The Carbon Cub is draggy enough that they don't have to worry about speed, and that is not the reason for the RPM limit.

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15 hours ago, Doug G. said:

Nope, I didn't say anything about RPM, and neither do the Light Sport parameters.

Yeah, but RPM limits are a great way to limit speed.  That is how the Sonex with the Jabiru 3300 stays LSA...the engine rpm is limited by placard to 2850rpm.

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1 hour ago, Tom Baker said:

The Carbon Cub is draggy enough that they don't have to worry about speed, and that is not the reason for the RPM limit.

Not the point Tom. I was simply saying that the FAA has allowed this by placard in some cases. Since I don't know the stall speeds on this plane I also don't know if that would be enough.

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