4 Titan Engines, 2 MT Props, One RV-8, 4 days

Relentless · #1 07-01-2014, 08:45 PM

3 of our new Titan Engines all lined up and ready for MT vibration test on RV8. 212hp 409, 196hp 370, 188hp 340, and the last one that is not shown because if still on Dyno until tomorrow is our new counter-weighted 206hp 370.

Strain gages on prop blades and on crank to measure torsional vibration levels to make sure MT Props are certified for all our new engines.

Royce and I are on a role! We mounted equipment Monday and completed test on 409. Here we have just finished swapping 409 for first 370 and completed test in just 8 hours. Tomorrow we throw on next counter-weighted 370, and if all goes well we will finish with 340 and smaller MT prop on Thursday. I am really interested in finding out how 340 runs on RV8. It puts out about 188hp but only weights 250lbs. with cold induction and AFP fuel injection and Lightspeed.

Joseph from MT Propeller, doesn't like riding in the back, I think he would much rather do the pilot thing.

F1Boss · #2 07-02-2014, 07:57 AM

Great work, Kevin. Be careful of an aft CG with the lightest engine, with the fella in the back.

How is the wrap standing up to all the on-and-off process?

Carry on!
Mark

MOJO · #3 07-02-2014, 08:14 AM

Please post more info on your counter weight 370 crankshaft.
Will it be offered as a standalone item?

Very cool that y'all are spending your time doing this testing. Hope you
will post climb and speed performance.

Tailwinds to ya.

David Mojonnier

Relentless · #4 07-02-2014, 08:30 AM

Quote:

Originally Posted by F1Boss

Great work, Kevin. Be careful of an aft CG with the lightest engine, with the fella in the back.

How is the wrap standing up to all the on-and-off process?

Carry on!
Mark

Thanks mark, I was planning on weighing plane each time, I have same concern, Joseph is about 210 and equipment is about 30lbs in back. Test requires max MP at 2700rpm and test from stall to VNE..

I am not getting paid enough for this......

Relentless · #5 07-02-2014, 08:35 AM

Quote:

Originally Posted by MOJO

Please post more info on your counter weight 370 crankshaft.
Will it be offered as a standalone item?

Very cool that y'all are spending your time doing this testing. Hope you
will post climb and speed performance.

Tailwinds to ya.

David Mojonnier

Mojo,

I will be workign on this exact comparison over the weekend. I have not posted like I wanted because there is simply to much to test before OSH. I can tell you the the difference between the 194hp 370 and 212 hp 409 was dramatic on climbout. I hope the couterweighted 370 will perform better.

We do not plan on selling any of our experimental components seperate, too many problems with engine shops in the past. We will upgrade anyone's engine for minimal expense and get the manufacturers guarantee it was tested and done right!!!

DanH · #6 07-02-2014, 08:39 AM

Bravo!

In a world full of ad hoc engine/prop combinations, it's very good to see an engine house dedicated to the experimental market spending the time, effort, and money to do proper propeller vibration checks.

Hopefully you can get the Hartzell crew out to do their props also. Offhand, I'm not sure if anyone else has the equipment.

F1Boss · #7 07-02-2014, 09:36 AM

Keep in mind - the test prop is an ugly monster - with the strain sensors glued to it all over the place. Not the prop you want to use for flight testing...

Now, if MT brought production samples for you to teat, that is a different story!

This is great news, unless you are faster than me! :-0

Carry on!
Mark

Relentless · #8 07-02-2014, 09:37 AM

Quote:

Originally Posted by DanH

Bravo!

In a world full of ad hoc engine/prop combinations, it's very good to see an engine house dedicated to the experimental market spending the time, effort, and money to do proper propeller vibration checks.

Hopefully you can get the Hartzell crew out to do their props also. Offhand, I'm not sure if anyone else has the equipment.

MT seems to be the only one interested in doing this work with us but we are hoping the data we gather this week will at least give the other companies something to evaluate. MT seems willing to share for the sake of safety for all...

DanH · #9 07-02-2014, 10:20 AM

Quote:

Originally Posted by Relentless

MT seems to be the only one interested in doing this work with us but we are hoping the data we gather this week will at least give the other companies something to evaluate. MT seems willing to share for the sake of safety for all...

Sounds like a mission for the A-Team

http://teamaerodynamix.com/sponsors.html

AircraftWraps · #10 07-02-2014, 10:39 AM

Quote:

Originally Posted by Relentless

I can tell you the the difference between the 194hp 370 and 212 hp 409 was dramatic on climbout.

During Reno PRS last month, Titan allowed me to fly their 409 equipped RV8 we wrapped.

"Dramatic difference" would be very accurate regarding the Titan 409 compared to my 190+hp IO360. At 5000' and 80-90 degrees the 409 was very impressive.

Regards,

Scott