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Two minute WOT Ground Testk

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steve.freeman(at)syntaxds
Guest

Posted: Sat Jun 23, 2012 9:42 pm Post subject: Two minute WOT Ground Testk

And the breaks held ok at full throttle?  I have heard many reports that is not always the case. 

Steve Freeman

iPad

On Jun 23, 2012, at 7:11 PM, "Ron Lendon" <ron.lendon(at)gmail.com> wrote:

 	  Quote: 	

 To answer yor question, the prop is a warp drive and is set at 8.5 degrees.  This gives a static test of 2850 RPM.  The engine ran for a full two minutes at full static RPM.

 steve.freeman(at)syntaxds wrote:

> Did you have the prop feathered?  

> 

> Steve

> 

> --

 --------

 Ron Lendon, Detroit, MI

 WW Corvair with Roy's Garage 5th bearing

 Zodiac XL, ScrapBuilder 

 http://www.mykitlog.com/rlendon

 Corvair Engine Prints: 

 http://www.zenith.aero/profile/RonLendon

 Read this topic online here:

 http://forums.matronics.com/viewtopic.php?p=376475#376475

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bryanmmartin

Joined: 10 Jan 2006
Posts: 1018

Posted: Sun Jun 24, 2012 6:35 am Post subject: Two minute WOT Ground Testk

The brakes on my plane hold firm at full throttle, but the thrust tends to drag the plane forward anyway, dragging the tires.



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Bryan Martin
N61BM, CH 601 XL, Stratus Subaru.
do not archive.

BARRY CHECK 6

Joined: 15 Mar 2011
Posts: 738

Posted: Sun Jun 24, 2012 7:02 am Post subject: Two minute WOT Ground Testk

Brake slippage is usually do to the pads not being SET - Burnt In [See the brake manufacture's procedure].  This also has to deal with WHAT pads you are using.  The OLD and VERY GOOD pads are made with asbestos.  These are NOT FAA or EPA approved items.  They are GREAT, They Work and They Last & Last.  The other stuff, well, they are better for the environment, So Say the EPA.  Just remember - Don't go SNORTING your brakes after landing; I don't care how much they smoke. 



Better to snort - cinnamon.

Barry

On Sun, Jun 24, 2012 at 10:35 AM,  <bryanmmartin(at)comcast.net (bryanmmartin(at)comcast.net)> wrote:

 [quote]The brakes on my plane hold firm at full throttle, but the thrust tends to drag the plane forward anyway, dragging the tires.

 

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Ron Lendon

Joined: 10 Jan 2006
Posts: 685
Location: Clinton Twp., MI

Posted: Sun Jun 24, 2012 5:50 pm Post subject: Re: Two minute WOT Ground Testk

Brakes weren't a factor for this test. The tail is chained to the earth via concrete and an eyebolt.  Look at the pictures here.



https://picasaweb.google.com/109384641667389142437/June222012

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Ron Lendon
WW Corvair with Roy's Garage 5th bearing
CH 601 XLB
N601LT - Flying
http://www.mykitlog.com/rlendon
Corvair Engine Prints:
https://sites.google.com/site/corvairenginedata/

DaveG601XL

Joined: 27 Oct 2006
Posts: 351
Location: Cincinnati, Oh

Posted: Mon Jun 25, 2012 8:35 am Post subject: Re: Two minute WOT Ground Test

Ron,



Great to hear you are working through your pre-first flight checks.



Just chiming in on the angle that this thread took concerning brake strength.  When I first started taxi testing, my brakes did not seem to hold hardly anything, much less run-up RPM.  Once I performed the manufacturer's "conditioning procedure" and burned them in, holding for run-up and higher RPM was no problem.



Good luck!!

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