Has anyone installed a 2 blade MT prop on a spring gear M7-235-C O-540-B4B5. If so any chance of getting a copy of the 337 used for the field approval.
Thanks
2 blade 83†MT prop on M7-235C
- Lmjr
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2 blade 83†MT prop on M7-235C
Last edited by Lmjr on Sat Aug 10, 2019 12:49 pm, edited 1 time in total.
- bobguhr
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- Undaunted
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- captnkirk
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Have you considered the Hartzel trailblazer the have both two and three blade versions that are stc for the Maule. The two blade came in a bit cheaper for me and no field approval expense. I think the performance is pretty close I can’t give you an apple to apple comparison because I added bushwheels at the same time. The 29’s only cost me a couple of knots so I think it was a wash between the prop and the tires. It will save some weight also good luck let us know .
Kirk Johnson
If god had meant man to fly he would have given him more money
If god had meant man to fly he would have given him more money
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- Lmjr
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I was interested in the trailblazer but it is not STC'd for my engine (O-540-b4b5) 2575 rpm for takeoff. So it would also require a field approval.captnkirk wrote:Have you considered the Hartzel trailblazer the have both two and three blade versions that are stc for the Maule. The two blade came in a bit cheaper for me and no field approval expense. I think the performance is pretty close I can’t give you an apple to apple comparison because I added bushwheels at the same time. The 29’s only cost me a couple of knots so I think it was a wash between the prop and the tires. It will save some weight also good luck let us know .
- captnkirk
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- Lmjr
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Yep, I emailed them. Their response was STC doesn’t include the B4B5 engine have a nice day. There was zero interest from Hartzell in helping to facilitate the installation of a trailblazer on my Maule.captnkirk wrote:I was unaware of that difference. Did you check with Hartzel they may help with the process .
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