REFLECTOR: Parking brake

Scott Derrick scott at tnstaafl.net
Mon Jan 26 08:25:19 CST 2009 

I have found the V to be very stable in the wind. I thinks its because 
the winglets are not very far behind the mains, so there isn't much 
leverage.  Tricycle gear airplanes are 100 times more stable than 
conventional.

I have had to park a couple times on a slope.  I initiated a really 
tight turn to castor the nose wheel to 90 degrees, which allowed me to 
get out and chock up.

Scott


Chuck Jensen wrote:
> As a point of clarification, I also tie and/or chock the Velo and not simply rely on the parking brake.  The time's I've set it, I've never had it go down, but we know how Murphy works.
> 
> Is it a shared opinion that the Velo is a lot less susceptible to wind stability on the ramp than most planes?  It seems that without the big tail setting at the end of a long moment arm, that its difficult for a wind to get a purchase on a Velo and push it around on the ramp....or is that like a lot of my thinkin' and just basically wrong.  lol
> 
> Chuck Jensen
> 
> 
> -----Original Message-----
> From: reflector-bounces at tvbf.org [mailto:reflector-bounces at tvbf.org]On
> Behalf Of Rene Dugas
> Sent: Sunday, January 25, 2009 11:57 PM
> To: Velocity Aircraft Owners and Builders list
> Subject: Re: REFLECTOR: Parking brake
> 
> 
> I do the same with angle al. The parking brake has only helped me when  
> solo parking on a slope. Engaged it gives me time to chock and tie.  
> And when departing. I don't trust hydraulics to not slowly leak down  
> so the parking brake for me is very temporary but useful.
> 
> Rene' Dugas, MD
> Sent from my iPhone3G
> 
> On Jan 25, 2009, at 6:05 PM, "Laurence Coen" <lwcoen at hotmail.com> wrote:
> 
>> Scott,
>>
>> I don't have a parking brake on my Velocity but I do use chocks and  
>> tie it
>> down if it's on the ramp over night.  I made my chocks from 1.5"  
>> aluminum
>> angle about 3" long.  I have 3 pair and use them when ever I'm not  
>> in the
>> hanger.  If I'm away from home I also carry my own tie downs.  I've  
>> been to
>> airports that have rotten ropes that wouldn't keep a small dog from  
>> running
>> off.  My tie downs are cargo straps that have a hook on each end and a
>> buckle that allows snuggling them up with a pull on the free end.
>>
>> Larry Coen
>> N136LC
>>
>>
>> --------------------------------------------------
>> From: "Scott Derrick" <scott at tnstaafl.net>
>> Sent: Sunday, January 25, 2009 8:28 AM
>> To: "Velocity Aircraft Owners and Builders list" <reflector at tvbf.org>
>> Subject: Re: REFLECTOR: Parking brake
>>
>>> I've been flying for 3,000 + hours and never used a parking brake.
>>>
>>> granted I've never flown a tail wheel aircraft which I've been told
>>> really needs one because it will roll into the wind at the slightest
>>> breeze.
>>>
>>> Scott
>>>
>>> Chuck Jensen wrote:
>>>> David,
>>>>
>>>> A parking brake does not come standard, by it's highly recommended.
>>>> Matco (Aircraft Spruce) make an inexpensive dependable brake that  
>>>> can be
>>>> actuated with a little push-pull cable.  You plumb your lines into  
>>>> it and
>>>> when it is set on 'brake', actuating the brakes will pressurize  
>>>> the line
>>>> from the Matco valve to the brakes and hold pressure.  Or, you can
>>>> actuate the brakes and then shut the Matco valve.
>>>>
>>>> At one time parking brakes were discouraged; it was thought if the  
>>>> brakes
>>>> were pressured and locked, and later in the day it warmed up, that  
>>>> it
>>>> might over-pressurize the brakes.  Great theory but it's not a  
>>>> problem in
>>>> practice.  I can set my brake and come back a week later and they  
>>>> are
>>>> still locked.
>>>>
>>>> Hint.  Set up your cable so that pushing the knob in releases the  
>>>> brake
>>>> and pulling it engages the check valve.  If you reverse it and you  
>>>> happen
>>>> to bump the knob in while in flight, then when you actuate the  
>>>> brakes on
>>>> landing they will stay locked up....not good.
>>>>
>>>> Chuck Jensen
>>>>
>>>>
>>>>
>>>> -----Original Message-----
>>>> From: reflector-bounces at tvbf.org [mailto:reflector- 
>>>> bounces at tvbf.org]On
>>>> Behalf Of David Ullman
>>>> Sent: Saturday, January 24, 2009 11:58 AM
>>>> To: reflector at tvbf.org
>>>> Subject: Re: REFLECTOR: Parking brake
>>>>
>>>>
>>>> I was flying my friends Grumman Tiger the other day and inquired  
>>>> how the
>>>> parking brake works.  Since the Grumman has a castoring noise  
>>>> wheel and
>>>> is
>>>> steered with hydraulic toe brakes, this seemed a good question as  
>>>> I am
>>>> now
>>>> plumbing the brakes on my Velocity.  It appears that when you pull  
>>>> the
>>>> parking brake knob, you are locking the hydraulic pressure on the  
>>>> brakes.
>>>> So, to apply the parking brakes, you apply both toe brakes, and  
>>>> then pull
>>>> the knob, hydraulically locking them.
>>>>
>>>> I don't recall seeing this capability in my Velocity kit nor  
>>>> hearing it
>>>> discussed on this site.  Anyone done this?  If so where did you  
>>>> get the
>>>> knob/valve assembly, to do this?
>>>>
>>>> David G. Ullman PhD ME
>>>> Robust Decisions
>>>> ullman at robustdecisions.com
>>>> 541-754-3609
>>>>
>>>>
>>>> __________ Information from ESET Smart Security, version of virus
>>>> signature
>>>> database 3796 (20090124) __________
>>>>
>>>> The message was checked by ESET Smart Security.
>>>>
>>>> http://www.eset.com
>>>>
>>>>
>>>> _______________________________________________
>>>> To change your email address, visit
>>>> http://www.tvbf.org/mailman/listinfo/reflector
>>>>
>>>> Visit the gallery!  www.tvbf.org/gallery
>>>> user:pw = tvbf:jamaicangoose
>>>> Check new archives: www.tvbf.org/pipermail
>>>> Check old archives: http://www.tvbf.org/archives/velocity/maillist.html
>>>>
>>>> _______________________________________________
>>>> To change your email address, visit
>>>> http://www.tvbf.org/mailman/listinfo/reflector
>>>>
>>>> Visit the gallery!  www.tvbf.org/gallery
>>>> user:pw = tvbf:jamaicangoose
>>>> Check new archives: www.tvbf.org/pipermail
>>>> Check old archives: http://www.tvbf.org/archives/velocity/maillist.html
>>>>
>>> _______________________________________________
>>> To change your email address, visit
>>> http://www.tvbf.org/mailman/listinfo/reflector
>>>
>>> Visit the gallery!  www.tvbf.org/gallery
>>> user:pw = tvbf:jamaicangoose
>>> Check new archives: www.tvbf.org/pipermail
>>> Check old archives: http://www.tvbf.org/archives/velocity/maillist.html
>>>
>> _______________________________________________
>> To change your email address, visit http://www.tvbf.org/mailman/listinfo/reflector
>>
>> Visit the gallery!  www.tvbf.org/gallery
>> user:pw = tvbf:jamaicangoose
>> Check new archives: www.tvbf.org/pipermail
>> Check old archives: http://www.tvbf.org/archives/velocity/ 
>> maillist.html
> _______________________________________________
> To change your email address, visit http://www.tvbf.org/mailman/listinfo/reflector
> 
> Visit the gallery!  www.tvbf.org/gallery
> user:pw = tvbf:jamaicangoose
> Check new archives: www.tvbf.org/pipermail
> Check old archives: http://www.tvbf.org/archives/velocity/maillist.html
> 
> _______________________________________________
> To change your email address, visit http://www.tvbf.org/mailman/listinfo/reflector
> 
> Visit the gallery!  www.tvbf.org/gallery
> user:pw = tvbf:jamaicangoose
> Check new archives: www.tvbf.org/pipermail
> Check old archives: http://www.tvbf.org/archives/velocity/maillist.html
>

More information about the Reflector mailing list