I searched the old database but could not find this.
Also, Culver's website had no info.

I am installing a culver prop to my rotax 277.
Anyone know about the proper torque spec for the bolts?

On a set of instruction that came with a prop purchased from the origional Culver Props was the notatiom of 200 inch lbs + or_  25 inch lbs.  I marjed this on the prop with magic marker wher the prop plate would cover it.  Divide both numbers by 12 to convert to foot lbs.   John

That would be with 6, 1/4" bolts right?

On checking,  the poundage given was for 5/16 bolts.  John

Dear Smokinjo,

I think the correct torque for 1/4 in bolts is 125 inch lbs.  I'm working from memory with Tennessee wood props.

Good luck,
Stroman

Yes, 1/4" bolts should be torqued to 125 in. lbs.

Here is the torque information for the propeller bolts from the Tennessee Props website.

1/4 bolts-----------132 inch pounds (+ or - 10 inch pounds)

5/16 bolts----------144 inch pounds (+ or - 15 inch pounds)

3/8 bolts------------200 inch pounds (+ or - 20 inch pounds)

7/16 bolts-----------250 inch pounds (+ or - 25 inch pounds)

1/2 bolts------------300 inch pounds (+ or - 25 inch pounds)

This may be a little off subject, but aren't Rotax drive hubs on their gearboxes tapped for quarter inch and 8 MM?

Stroman

Yes they are.