Yak-List Digest Archive

Tue 04/03/07


Total Messages Posted: 10



Today's Message Index:
----------------------
 
     1. 05:52 AM - for Bryon Fox (Mark Jefferies YAK UK)
     2. 12:33 PM - Yak-52 Brake Cable News (John A. Nielsen)
     3. 12:52 PM - Re: Yak-52 Brake Cable News (ByronMFox@aol.com)
     4. 02:11 PM - Re: Yak-52 Brake Cable News (Jorgen Nielsen)
     5. 02:40 PM - Re: Yak-52 Brake Cable News (Roger Baker)
     6. 02:54 PM - Re: Yak-52 Brake Cable News (Roger Baker)
     7. 02:54 PM - Re: Yak-52 Brake Cable News (John A. Nielsen)
     8. 07:26 PM - Re: Sport Aviation april 2007 (Tim Gagnon)
     9. 08:03 PM - Re: ALL RED STAR VI - May 2-6, 2007 (ByronMFox@aol.com)
    10. 08:17 PM - Re: ALL RED STAR VI - May 2-6, 2007 (Roger Kemp)
 
 
 


Message 1


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    Time: 05:52:37 AM PST US
    From: "Mark Jefferies YAK UK" <mj@yakuk.com>
    Subject: for Bryon Fox
    Bryon, your aol address bounces, please contact me. Apologies to everyone else! BR Mark Jefferies for YAK <http://www.yakuk.com> UK Ltd Lt Gransden Airfield <http://www.yakuk.com/EGMJ.asp> Sandy, Beds SG19 3BP - England Conditions of business <http://www.yakuk.com/cob.doc> 00 44 1767 651 156 ph 00 44 1767 651 157 fx 00 44 7785 538 317 mob


    Message 2


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    Time: 12:33:34 PM PST US
    From: "John A. Nielsen" <john@nielsenford.com>
    Subject: Yak-52 Brake Cable News
    We test fit the prototype of the front brake cable assembly we are going to produce for the '52. Problems we are attempting to fix are stretch of cable, breaking of cable at ball ends and adjusters breaking. All of these weaknesses can lead to a brake failure, usually at a time in the vacinity of people and planes....not good. In evaluating the common weaknesses of the original, we are changing the following: Cable size increased to avoid stretch. AN clevis ends designed for use with swaged cable balls. 1/8 inch additional adjustment on each working end of the cable. 4 inch additional working length of cable to allow for more convenient positioning. Formed thinwall aluminum guide to securely and accurately make the 90 degree radius as the cable transitions from fore-aft to side to side direction as it approaches the termination at the air valve just right of the rear control stick. In making multiple cable changes over the years, mods have been made to the plane in an attempt attempt to make it faster to change and reduce failure points. Here is what was done: The (front) cable tends to get pinched during full back-right stick excursions. Additional working room was gained by using a dremmel tool to widen the gap between the boot collar and the stick. A 2" x 2" access port was opened in the rear floor with a dremmel tool. This opening is located directly above the rear-top attach point of the front brake cable clevis were it connects to the valve. It is covered with a piece of .024 Alclad held down by the rudder cable guard and right rear foot access panel. We will make up a dozen when testing is complete. Price is expected to be at $100. Anyone with an interest in ordering one, please reply to me directly at John@HighPerformanceAircraftProducts.com I will keep you posted. John Nielsen www.HighPerformanceAircraftProducts.com


    Message 3


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    Time: 12:52:54 PM PST US
    From: ByronMFox@aol.com
    Subject: Re: Yak-52 Brake Cable News
    Have considered making a similar brake cable for Nanchangs, John? ...Blitz ************************************** See what's free at http://www.aol.com.


    Message 4


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    Time: 02:11:03 PM PST US
    From: "Jorgen Nielsen" <jorgen.nielsen@mweb.co.za>
    Subject: Yak-52 Brake Cable News
    All sounds good - like to add my 2c to design spec... I operate other machines that use cables and find the difference in feel is huge between the Yak brake and e.g. a high performance motorcycle clutch cable. The Yak cable simply has too much friction between the inner and outer cables. Cables are available with a Teflon (I think that's what it is) lining that should on the Yak improve the feel and reduce the pressure required substantially, also then no need to oil the cable which means no dirt which means longer life etc. etc. I rebuilt my sons trick bike's brakes with such high grade cables and he could not believe the difference. Thoughts? -----Original Message----- From: owner-yak-list-server@matronics.com [mailto:owner-yak-list-server@matronics.com] On Behalf Of John A. Nielsen Sent: 03 April 2007 09:32 PM Subject: Yak-List: Yak-52 Brake Cable News We test fit the prototype of the front brake cable assembly we are going to produce for the '52. Problems we are attempting to fix are stretch of cable, breaking of cable at ball ends and adjusters breaking. All of these weaknesses can lead to a brake failure, usually at a time in the vacinity of people and planes....not good. In evaluating the common weaknesses of the original, we are changing the following: Cable size increased to avoid stretch. AN clevis ends designed for use with swaged cable balls. 1/8 inch additional adjustment on each working end of the cable. 4 inch additional working length of cable to allow for more convenient positioning. Formed thinwall aluminum guide to securely and accurately make the 90 degree radius as the cable transitions from fore-aft to side to side direction as it approaches the termination at the air valve just right of the rear control stick. In making multiple cable changes over the years, mods have been made to the plane in an attempt attempt to make it faster to change and reduce failure points. Here is what was done: The (front) cable tends to get pinched during full back-right stick excursions. Additional working room was gained by using a dremmel tool to widen the gap between the boot collar and the stick. A 2" x 2" access port was opened in the rear floor with a dremmel tool. This opening is located directly above the rear-top attach point of the front brake cable clevis were it connects to the valve. It is covered with a piece of .024 Alclad held down by the rudder cable guard and right rear foot access panel. We will make up a dozen when testing is complete. Price is expected to be at $100. Anyone with an interest in ordering one, please reply to me directly at John@HighPerformanceAircraftProducts.com I will keep you posted. John Nielsen www.HighPerformanceAircraftProducts.com


    Message 5


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    Time: 02:40:30 PM PST US
    From: Roger Baker <f4ffm2@adelphia.net>
    Subject: Re: Yak-52 Brake Cable News
    On Apr 3, 2007, at 12:32 PM, John A. Nielsen wrote: > <john@nielsenford.com> > > We test fit the prototype of the front brake cable assembly we are > going > to produce for the '52. > > Problems we are attempting to fix are stretch of cable, breaking of > cable at ball ends and adjusters breaking. All of these weaknesses > can > lead to a brake failure, usually at a time in the vacinity of > people and > planes....not good. > > In evaluating the common weaknesses of the original, we are > changing the > following: > Cable size increased to avoid stretch. > AN clevis ends designed for use with swaged cable balls. > 1/8 inch additional adjustment on each working end of the cable. > 4 inch additional working length of cable to allow for more convenient > positioning. > Formed thinwall aluminum guide to securely and accurately make the 90 > degree radius as the cable transitions from fore-aft to side to side > direction as it approaches the termination at the air valve just right > of the rear control stick. > > In making multiple cable changes over the years, mods have been > made to > the plane in an attempt attempt to make it faster to change and > reduce failure points. Here is what was done: > > The (front) cable tends to get pinched during full back-right stick > excursions. Additional working room was gained by using a dremmel > tool > to widen the gap between the boot collar and the stick. > > A 2" x 2" access port was opened in the rear floor with a dremmel > tool. > This opening is located directly above the rear-top attach point of > the > front brake cable clevis were it connects to the valve. It is covered > with a piece of .024 Alclad held down by the rudder cable guard and > right rear foot access panel. > > We will make up a dozen when testing is complete. Price is > expected to > be at $100. Anyone with an interest in ordering one, please reply > to me directly at John@HighPerformanceAircraftProducts.com > > I will keep you posted. > > John Nielsen > www.HighPerformanceAircraftProducts.com > >


    Message 6


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    Time: 02:54:42 PM PST US
    From: Roger Baker <f4ffm2@adelphia.net>
    Subject: Re: Yak-52 Brake Cable News
    Tom Johnson has been using/recommending hi tech (read "modern") cycle type cables for 52 brakes for some time now. Roger PS plz excuse the accidental previous posting...I pusha da' wrong button..... On Apr 3, 2007, at 12:32 PM, John A. Nielsen wrote: > <john@nielsenford.com> > > We test fit the prototype of the front brake cable assembly we are > going > to produce for the '52. > > Problems we are attempting to fix are stretch of cable, breaking of > cable at ball ends and adjusters breaking. All of these weaknesses > can > lead to a brake failure, usually at a time in the vacinity of > people and > planes....not good. > > In evaluating the common weaknesses of the original, we are > changing the > following: > Cable size increased to avoid stretch. > AN clevis ends designed for use with swaged cable balls. > 1/8 inch additional adjustment on each working end of the cable. > 4 inch additional working length of cable to allow for more convenient > positioning. > Formed thinwall aluminum guide to securely and accurately make the 90 > degree radius as the cable transitions from fore-aft to side to side > direction as it approaches the termination at the air valve just right > of the rear control stick. > > In making multiple cable changes over the years, mods have been > made to > the plane in an attempt attempt to make it faster to change and > reduce failure points. Here is what was done: > > The (front) cable tends to get pinched during full back-right stick > excursions. Additional working room was gained by using a dremmel > tool > to widen the gap between the boot collar and the stick. > > A 2" x 2" access port was opened in the rear floor with a dremmel > tool. > This opening is located directly above the rear-top attach point of > the > front brake cable clevis were it connects to the valve. It is covered > with a piece of .024 Alclad held down by the rudder cable guard and > right rear foot access panel. > > We will make up a dozen when testing is complete. Price is > expected to > be at $100. Anyone with an interest in ordering one, please reply > to me directly at John@HighPerformanceAircraftProducts.com > > I will keep you posted. > > John Nielsen > www.HighPerformanceAircraftProducts.com > >


    Message 7


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    Time: 02:54:45 PM PST US
    From: "John A. Nielsen" <john@nielsenford.com>
    Subject: Re: Yak-52 Brake Cable News
    I don't have one to use as a template and no personal experience with it to cuss at failures and wonder how it could be made better. John ByronMFox@aol.com wrote: > Have considered making a similar brake cable for Nanchangs, John? ...Blitz > > > ************************************** > See what's free at http://www.aol.com. > > > >


    Message 8


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    Time: 07:26:58 PM PST US
    Subject: Re: Sport Aviation april 2007
    From: "Tim Gagnon" <NiftyYak50@fuse.net>
    I just got tired of seeing "other" experimentals and the Yak community not being recognized. Plus I wanted to see if they would really post it and its cool to see my bird in EAA! We need a story about Yaks! Read this topic online here: http://forums.matronics.com/viewtopic.php?p=104810#104810


    Message 9


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    Time: 08:03:42 PM PST US
    From: ByronMFox@aol.com
    Subject: Re: ALL RED STAR VI - May 2-6, 2007
    Postal, will be using the Best Western again. ...Blitz ************************************** See what's free at http://www.aol.com.


    Message 10


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    Time: 08:17:39 PM PST US
    From: "Roger Kemp" <viperdoc@mindspring.com>
    Subject: Re: ALL RED STAR VI - May 2-6, 2007
    I feel for him! Lumpy beds and all. ----- Original Message ----- From: Sent: 4/3/2007 10:09:29 PM Subject: Re: Yak-List: ALL RED STAR VI - May 2-6, 2007 Postal, will be using the Best Western again. ...Blitz See what's free at AOL.com.




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