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  #1  
Old 11-19-2020, 03:54 PM
622BH 622BH is offline
 
Join Date: Nov 2011
Location: Albany, OR
Posts: 176
Default Oh What A Difference...

Just changed out the stock tires for Desser Monsters 5.00-5 and Michelin Air Stop Tubes. Balanced at 40 PSI.
Much better taxi and Take-off / Landing roll than before.

Stock tires limited me to 35 PSI or shimmy ensued. Now at 40 PSI and no hint of shimmy, the airplane will actually taxi at 900 RPM. That's significantly better than the 1200 RPM required previously.

From now on, its Desser & Air Stop for "My Beebe."
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  #2  
Old 11-19-2020, 03:57 PM
Dugaru's Avatar
Dugaru Dugaru is offline
 
Join Date: Jan 2016
Location: Richmond VA, USA
Posts: 524
Default Same here

No more landing shimmy for me, either, after the change. I also run mine at 40 PSI.

Quote:
Originally Posted by 622BH View Post
Just changed out the stock tires for Desser Monsters 5.00-5 and Michelin Air Stop Tubes. Balanced at 40 PSI.
Much better taxi and Take-off / Landing roll than before.

Stock tires limited me to 35 PSI or shimmy ensued. Now at 40 PSI and no hint of shimmy, the airplane will actually taxi at 900 RPM. That's significantly better than the 1200 RPM required previously.

From now on, its Desser & Air Stop for "My Beebe."
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N929JA, 2007 RV-9A
Based W96: New Kent International Aerodrome
(near Richmond, VA USA)
2021 Dues Paid
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  #3  
Old 11-19-2020, 08:57 PM
Steve Melton's Avatar
Steve Melton Steve Melton is online now
 
Join Date: Apr 2011
Location: Cincinnati, OH
Posts: 3,121
Default

Continental here but the same tread pattern and air stop tubes. I developed some shimmy on the stock tires after 200 hrs and they became cupped on the edges. I added wooden leg dampers and switched to the continental tire. no shimmy after that. 45 psi on the mains and let it sink back to 40 psi. air them about each 6 months or longer. 50 psi on the nose. it will allow you to roll a long way and makes you glad you have brakes. for a normal landing I can roll 3000 ft. I try to keep my brakes in good shape.

a thing I have found to minimize brake usage.... if the taxi way is crowned, like ours at HAO, then taxi slightly off center on the downwind side and it will minimize usage of the brakes. the wind on the vertical stab and the crown are opposing forces. if you are with a CFI then taxi on the centerline.
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Steve Melton
Cincinnati, OH
RV-9A, Tip-up, Superior O-320, roller lifters, 160HP, WW 200RV, dual impulse slick mags, oil pressure = 65 psi, EGT = 1300F, flight hours = 900+ for all

Simplicity is the art in design.
I was born an airplane nut. I have no explanation for it.
My Artwork is freely given and published and cannot be patented.
www.rvplasticparts.com

Last edited by Steve Melton : 11-20-2020 at 10:08 AM.
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  #4  
Old 11-20-2020, 10:32 AM
622BH 622BH is offline
 
Join Date: Nov 2011
Location: Albany, OR
Posts: 176
Default Nice Suggestion Steve

Are you airing the Lamb tire to 50 PSI?

The taxi tip is a nice trick if there’s a cross wind. My airport has a predominant head/tail-wind right down the taxiway. So the crown and brakes get used a bit more than preferred.
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  #5  
Old 11-20-2020, 11:00 AM
dreed dreed is offline
 
Join Date: Nov 2016
Location: Camas, WA
Posts: 478
Default

Haven't even flown my 7A yet but am thinking I should do this (have Berringer nose wheel).

Where did you get them? Spruce? Anyone comment on Mich vs. Dresser tires?
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Camas, WA
RV-7A - N167DR (reserved)
Inspection coming
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  #6  
Old 11-20-2020, 11:20 AM
Steve Melton's Avatar
Steve Melton Steve Melton is online now
 
Join Date: Apr 2011
Location: Cincinnati, OH
Posts: 3,121
Default

Quote:
Originally Posted by 622BH View Post
Are you airing the Lamb tire to 50 PSI?

The taxi tip is a nice trick if there’s a cross wind. My airport has a predominant head/tail-wind right down the taxiway. So the crown and brakes get used a bit more than preferred.

nose wheel stock Lamb to 50 psi and then let is sink back over time. so far that has been fine for me.
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Steve Melton
Cincinnati, OH
RV-9A, Tip-up, Superior O-320, roller lifters, 160HP, WW 200RV, dual impulse slick mags, oil pressure = 65 psi, EGT = 1300F, flight hours = 900+ for all

Simplicity is the art in design.
I was born an airplane nut. I have no explanation for it.
My Artwork is freely given and published and cannot be patented.
www.rvplasticparts.com
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  #7  
Old 11-20-2020, 11:25 AM
Steve Melton's Avatar
Steve Melton Steve Melton is online now
 
Join Date: Apr 2011
Location: Cincinnati, OH
Posts: 3,121
Default

Quote:
Originally Posted by dreed View Post
Haven't even flown my 7A yet but am thinking I should do this (have Berringer nose wheel).

Where did you get them? Spruce? Anyone comment on Mich vs. Dresser tires?
recommend to use the stock tire because they are good enough to get you going and they will give you a data point. don't spend the money until you want to upgrade.
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Steve Melton
Cincinnati, OH
RV-9A, Tip-up, Superior O-320, roller lifters, 160HP, WW 200RV, dual impulse slick mags, oil pressure = 65 psi, EGT = 1300F, flight hours = 900+ for all

Simplicity is the art in design.
I was born an airplane nut. I have no explanation for it.
My Artwork is freely given and published and cannot be patented.
www.rvplasticparts.com
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  #8  
Old 11-20-2020, 12:26 PM
dreed dreed is offline
 
Join Date: Nov 2016
Location: Camas, WA
Posts: 478
Default

Thanks! Worth upgrading the tubes initially at least? Out of paint and reassembling now so not a horrible time for me to do it before wings are back on, pants etc. So many horror stories about stock tubes.

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Dan Reed
Camas, WA
RV-7A - N167DR (reserved)
Inspection coming
2018/19/20 VAF dues paid
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  #9  
Old 11-20-2020, 12:43 PM
Steve Melton's Avatar
Steve Melton Steve Melton is online now
 
Join Date: Apr 2011
Location: Cincinnati, OH
Posts: 3,121
Default

Quote:
Originally Posted by dreed View Post
Thanks! Worth upgrading the tubes initially at least? Out of paint and reassembling now so not a horrible time for me to do it before wings are back on, pants etc. So many horror stories about stock tubes.

perhaps the tubes, then you will not have to air so often. dream machine. it's a bullet!
__________________
Steve Melton
Cincinnati, OH
RV-9A, Tip-up, Superior O-320, roller lifters, 160HP, WW 200RV, dual impulse slick mags, oil pressure = 65 psi, EGT = 1300F, flight hours = 900+ for all

Simplicity is the art in design.
I was born an airplane nut. I have no explanation for it.
My Artwork is freely given and published and cannot be patented.
www.rvplasticparts.com
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  #10  
Old 11-20-2020, 12:56 PM
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bhester bhester is offline
 
Join Date: Jan 2005
Location: Hopkinsville, KY
Posts: 1,003
Default Kind of like the primer wars

Stock tires and tubes

Tire: AirHawk 5.00-5 6ply
Tube: Aero Classic Leakguard
Nose Tire: Chang Shin 11x4.00x5 8 ply
Tube: Whatever Vans sends “U-Lamb Tube”

Mains= 45psi Nose= 35psi
Acft hrs 1350
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Surfing the web from Hopkinsville, KY
N857BH RV7A XP-O360 - Garmin G3X ADS-B IN/OUT 2020 Compliant
Web site: http://www.newtech.com/bobbyhester/RVSite.htm
Dec. 2020 VAF donator - alot better than any magazine subscription

Last edited by bhester : 11-20-2020 at 01:04 PM.
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