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  #81  
Old 12-10-2017, 09:54 AM
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Uptown2k Uptown2k is offline
 
Join Date: Apr 2017
Location: Deland, FL
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Default

Looking forward to these results
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RV7 purchsed flying
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VAF dues paid thru 06/2018
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  #82  
Old 01-22-2018, 07:45 AM
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Uptown2k Uptown2k is offline
 
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Location: Deland, FL
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Default Any results???

Checking in to see if you had any numbers to share with us
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RV7 purchsed flying
Planning future build (RV-10)
VAF dues paid thru 06/2018
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  #83  
Old 01-22-2018, 10:51 AM
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Bob Martin Bob Martin is offline
 
Join Date: Jan 2005
Location: Richmond, Virginia
Posts: 1,116
Default Not yet

We have had some fitting issues, but getting them resolved.
Inital numbers are good/faster.
Main thing is 18 lbs lighter......prop and spinner combo.
Very pretty prop too...
I say this and it sounds hollow but it is true. A prop up until now has been a hunk of wood or metal with various paint jobs.
This prop has a finish that would rival the best paint job out there. Almost TOO pretty. One really has to be careful using powerful tools to torque nuts and safety wire etc around this prop.
Normally a prop just gets a cleaning or a wipe down, etc, but this prop begs for wax and to be taken care of.
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Bob Martin
RV-6, 0-360 Hartzell C/S, Tip up, 1150+TT
James extended cowl/plenum, induction, -8VS and Rudder. TSFlightline hoses. Oregon Aero leather seats.
D100-KMD150-660-TT ADI2- AS air/oil seperator. Vetterman exhaust with turndown tips.
Louisa, Virginia KLKU N94TB
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  #84  
Old 02-10-2018, 08:58 PM
Northernliving Northernliving is offline
 
Join Date: May 2005
Location: Boston, MA
Posts: 139
Default Performance?

Quote:
Originally Posted by Bob Martin View Post
We have had some fitting issues, but getting them resolved.
Inital numbers are good/faster.
Main thing is 18 lbs lighter......prop and spinner combo.
Very pretty prop too...
I say this and it sounds hollow but it is true. A prop up until now has been a hunk of wood or metal with various paint jobs.
This prop has a finish that would rival the best paint job out there. Almost TOO pretty. One really has to be careful using powerful tools to torque nuts and safety wire etc around this prop.
Normally a prop just gets a cleaning or a wipe down, etc, but this prop begs for wax and to be taken care of.
Bob, any additional performance numbers on the prop?

Thanks, Brian
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Boston, MA
RV8 Based at ORH - Purchased
RV8 - The Dream - Under Construction
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  #85  
Old 02-11-2018, 11:21 AM
gereed75 gereed75 is offline
 
Join Date: Sep 2007
Location: pittsburgh pa
Posts: 491
Default Cg considerations

Bob, I am sure you have considered the effect on cg that this change will cause.

Several hundred hours ago, I switched from a 200rv to a hartzell Aluminum to gain 19 pounds on the nose. The cg moved from tending towards aft to right in the middle of the range. The flying characteristics are substantially improved. a 6 with aft range cg’s can be very sensitive in pitch, have tendencies to bounce landings and limits aft baggage in a meaningful way.

Hope you are not going there.
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RV-6 IO-360
WW 200 RV now an Al Hartzell for improved CG
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  #86  
Old 02-13-2018, 01:26 PM
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Bob Martin Bob Martin is offline
 
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Location: Richmond, Virginia
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Quote:
Originally Posted by Northernliving View Post
Bob, any additional performance numbers on the prop?

Thanks, Brian
Brian,
No final numbers, preliminary numbers are good.
4mph faster at low cruise.
Time to climb to 8K was 6 seconds faster.

We had fitting issues with our James cowl and WW had us install a coarse stop ring in the hub. We are testing now for flight envelope. adjusting governor, etc. Once we are set, we will rerun the speed and time to climb tests.
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Bob Martin
RV-6, 0-360 Hartzell C/S, Tip up, 1150+TT
James extended cowl/plenum, induction, -8VS and Rudder. TSFlightline hoses. Oregon Aero leather seats.
D100-KMD150-660-TT ADI2- AS air/oil seperator. Vetterman exhaust with turndown tips.
Louisa, Virginia KLKU N94TB
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  #87  
Old 02-13-2018, 01:33 PM
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Bob Martin Bob Martin is offline
 
Join Date: Jan 2005
Location: Richmond, Virginia
Posts: 1,116
Default

Quote:
Originally Posted by gereed75 View Post
Bob, I am sure you have considered the effect on cg that this change will cause.

Several hundred hours ago, I switched from a 200rv to a hartzell Aluminum to gain 19 pounds on the nose. The cg moved from tending towards aft to right in the middle of the range. The flying characteristics are substantially improved. a 6 with aft range cg’s can be very sensitive in pitch, have tendencies to bounce landings and limits aft baggage in a meaningful way.

Hope you are not going there.
Gary,
Thanks for the input. I will look at the W&B, we have a recent one!
Our -6 went from a wood prop to a metal Sensenich to a C/S Hartzel to a James cowl conversion that included a 2.25 extension.
So we have gotten heavier and pushed the heavy prop farther out.
Taking 18 lbs off the nose seems like a wonderful thing.
It also made our wallet thinner.
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Bob Martin
RV-6, 0-360 Hartzell C/S, Tip up, 1150+TT
James extended cowl/plenum, induction, -8VS and Rudder. TSFlightline hoses. Oregon Aero leather seats.
D100-KMD150-660-TT ADI2- AS air/oil seperator. Vetterman exhaust with turndown tips.
Louisa, Virginia KLKU N94TB
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  #88  
Old 02-13-2018, 10:09 PM
gereed75 gereed75 is offline
 
Join Date: Sep 2007
Location: pittsburgh pa
Posts: 491
Default

Hmm, interesting journey. I thought at one time that the extended James cowl with composite prop might be the optimal six configuration. Go for it and good luck!
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RV-6 IO-360
WW 200 RV now an Al Hartzell for improved CG
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  #89  
Old 11-20-2018, 09:01 PM
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scrollF4 scrollF4 is online now
Moderator, Asst. Line Boy
 
Join Date: Jan 2010
Location: Flower Mound, TX
Posts: 1,153
Default What about the cowling?

Quote:
Originally Posted by ronschreck View Post
Hi Krea,

I don't have the engineering expertise of Steve Smith but I do have real-world experience with both props. I flew my RV-8 with a WW 200RV for about 1500 hours. I was given a Hartzell composite, wide blade prop when Hartzell sponsored our Team AeroDynamix.
Ron,
A friend of mine is contemplating the change from the WW to the Hartzell composite CS prop. When you made this conversion, how well did it fit with your existing cowling? Or did it require surgery on the cowling for fit?
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52F Aero Valley Airport, Roanoke TX (home of DR's Van Cave)
"KELLI GIRL" N260KM RV-7A tipper, YIO-360M1B with Danny King “Beautiful Doll’s” old Hartzell CS prop, dual PMAGs, dual SkyView, GTN-650, VPX, EarthX LiFePO.
Wrap by AircraftWraps.Com. Nose Art by VictoryGirl.com. Smoke by Smoke System Helper.
90% done, 90% to go...
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  #90  
Old 11-21-2018, 04:52 AM
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ronschreck ronschreck is offline
 
Join Date: Mar 2006
Location: Gold Hill Airpark (NC25), NC
Posts: 1,366
Default

Quote:
Originally Posted by scrollF4 View Post
Ron,
A friend of mine is contemplating the change from the WW to the Hartzell composite CS prop. When you made this conversion, how well did it fit with your existing cowling? Or did it require surgery on the cowling for fit?
When we first mounted the props there were several that hit the cowling at high pitch so we sent them all back to Hartzell and they gave us props with a hub that put the blades and inch further forward. No clearance issues with the new hub and that is the hub that is currently provided. No surgery required.
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IAC Director and National Judge
RV-8, "Miss Izzy", 2200+ RV Hours
Track Me *** Gold Hill Airpark (NC25)
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"Flying is the art of throwing yourself at the ground and missing."

Last edited by ronschreck : 11-28-2018 at 09:47 AM. Reason: typo
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