Europa-List Digest Archive

Sat 01/02/21


Total Messages Posted: 3



Today's Message Index:
----------------------
 
     1. 03:53 AM - Re: Europa XS Mono Throttle cable friction and jam (Richard Wheelwright)
     2. 08:46 AM - Re: Europa XS Mono Throttle cable friction and jam (Bud Yerly)
     3. 01:25 PM - Re: Europa XS Mono Throttle cable friction and jam (MEE)
 
 
 


Message 1


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    Time: 03:53:49 AM PST US
    From: Richard Wheelwright <rpwheelwright@yahoo.co.uk>
    Subject: Re: Europa XS Mono Throttle cable friction and jam
    I had a similar problem. If cables are oil/greased in time the lubricant eve ntually drys out and also picks up dust. And then will stick. To solve the problem I changed to solid cables. I sent my old cable to https ://www.cable-tec.co.uk/ who made me the new cables to the length required. There is s heat resistant grease that does not dry out, sorry I cannot reme mber what it was. But it has worked perfectly for about 4 years with no prob lems. Richard > On 2 Jan 2021, at 05:52, MEE <macstar1224@gmail.com> wrote: > > > I had to abort a take-off due to poor acceleration and low manifold pressu re. > Problem was caused by one throttle cable sticking at just above idle whil e the other at full throttle! > Even when the cable was lubricated it was still has high friction. Looks l ike I need new cables. Think the cable system needs expandable rubber boots t o reduce the amount of grit that must contaminate the cable runs. > Anyone else had this problem? > > -------- > Ian McClelland > > > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=499940#499940 > > > > > > ========================== ========= ========================== ========= ========================== ========= ========================== ========= ========================== ========= > > >


    Message 2


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    Time: 08:46:12 AM PST US
    From: Bud Yerly <budyerly@msn.com>
    Subject: Europa XS Mono Throttle cable friction and jam
    Ian, I believe the Europa Club has a paper I did on throttle cable installation on their site, it is also at https://customflightcreations.com/techniques-a rticles/ (I don't pay google any longer so type in the https://... to find the site through all the paying ad customers.) If the cable bends in the t hrottle box, it is generally not a lubrication problem or even a sticky oil cable to sheath issue. It is a problem with the cable installation, most likely a kinked or bound cable. Maintainers unfamiliar with the Europa oft en look at the cables and are appalled that they are loose and not firmly b ound all along their route to the carb. In their attempt for neatness, the y bind the cable(s) and cause them to bind. Builders also fail to get thei r initial throttle box alignment correct to prevent the cable(s) from clean ly entering the sheath from the throttle arm. I recently scolded one of my clients for allowing a well known Rotax repair facility touch his cable ro uting. The repairman kinked the cables and bound them tightly. It was an older Classic (20+ years old), so upon installation of his new cables, all worked flawlessly again. Cables must be anchored and aligned properly on both ends and frankly, the area in between must be loopy and only lightly affixed to prevent interfere nce in the wheel well of the mono. A new set of cables can be purchased, but still, the running of the cables, the alignment in the home made throttle box and fixation to the carby must be addressed. To supplement my article on "Throttle and choke cable etiquette" attached, please check the following: Prior to removing the cables to rebuild them to proper spec. one can check that the cables are not kinked or tightly bound, the cable binding nuts on the throttles are lubricated and free to rotate, and the throttle box cable pivot points on the arm are free to operate. (The only two points requiri ng lubrication are this pivot on the throttle linkage and the box cable piv ot attachment in my opinion.) Look into the throttle box for proper cable alignment. If issues are found, simply removing the cable/throttle box to your nice warm workbench and correcting issues is all that is needed. I fi nd that if the cable itself is kinked, or unraveled, it is best to replace the cables as it is not worth the time. If the cable will not operate laid out on the bench, it won't work in the plane. If you have to tug on a cab le in either direction to get it to move, you have a damaged sheath. Remem ber, cable sheaths are just a coil of wire wrapped around a nylon tube. If the winding is damaged, it squeezes the inner liner, and the cable will no t operate freely in the sheath. For me, the nylon sheath lined cables require no lube over a lifetime. (Al though I have used a graphite lube to ease customers fears from the constan t complaints of club members/owners on this subject.) The sheath is lined with nylon, coiled in stainless, then heat shrink over the top making a dir t resistant sheath for the twisted wire cable. My old original Classic cab les from 1998 (I'm not sure if they were supplied by Europa) were damaged b y the original builder and were shortened in length, but alas his technique was poor as the cable sheaths were bent hard, the cable end cuts were smas hed and the cable attachments were misaligned in the throttle box. So ther e was much to correct. Note that if supplied with an aftermarket or origin al non lined sheath, they are best replaced as stainless steel to stainless steel can lead to a corrosion problem eventually. My 2005 supplied Europa cables have been good now for 15+ years with only a single light lube of a Teflon or graphite that was used during inspection (I can't remember what lube I used on the cloth as I was more interested in corrosion of the cable s here in Florida). The reason I pulled my cables was for an experiment du ring my rubber replacement at the 10 year condition inspection, when I also chose to install a throttle friction. Some owner/builders have done solid cables of wire, model airplane nyrod pu sh pull cables, and Zenith style solid rod to a welded arm on the firewall that allows both throttles to be actuated via a short push pull cable. All taking more time, money and effort than simply following cable etiquette. Read over the attached paper and check your cables for yourself. Correct any issues, make sure it works on the bench with the cables straight, then make a large loop and check again. After install in the aircraft but not y et attached to the carb arm, the cables should move freely. If the thrott le cables worked on the bench and not in the aircraft, you've pinched somet hing. I've found from winter to summer, from minus 10C to plus 40C the cab les work fine from Canada to Florida so they should work for you. Any cable of twisted wire, solid wire or plastic will do if you can get the fittings right on the ends and aligned properly. In experimentation, it t akes a keen eye for detail, time, patience, analysis and money to correct o ur new designs/mods and get them working flawlessly. Best Regards, Bud Yerly -----Original Message----- From: owner-europa-list-server@matronics.com <owner-europa-list-server@matr onics.com> On Behalf Of MEE Sent: Saturday, January 02, 2021 12:52 AM Subject: Europa-List: Europa XS Mono Throttle cable friction and jam I had to abort a take-off due to poor acceleration and low manifold pressur e. Problem was caused by one throttle cable sticking at just above idle while the other at full throttle! Even when the cable was lubricated it was still has high friction. Looks li ke I need new cables. Think the cable system needs expandable rubber boots to reduce the amount of grit that must contaminate the cable runs. Anyone else had this problem? -------- Ian McClelland Read this topic online here: https://na01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fforums.ma tronics.com%2Fviewtopic.php%3Fp%3D499940%23499940&amp;data=04%7C01%7C%7C4 9e72240470042cfdcd508d8aee36e03%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0% 7C637451639107968109%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2 luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&amp;sdata=dVOlPJhn9HUqIQ8ni9% 2FoEbFFq1R1F9Onh1IQJEPA9fE%3D&amp;reserved=0 %2Fwww.matronics.com%2FNavigator%3FEuropa-List&amp;data=04%7C01%7C%7C49e7 2240470042cfdcd508d8aee36e03%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C6 37451639107968109%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luM zIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&amp;sdata=CDiwbu5VruzkTCMLOi7x4v D94Ep3uu%2BPuUZ78bHwgys%3D&amp;reserved=0 %2Fforums.matronics.com%2F&amp;data=04%7C01%7C%7C49e72240470042cfdcd508d8 aee36e03%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637451639107978103%7C Unknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiL CJXVCI6Mn0%3D%7C1000&amp;sdata=VdEBmsKWLU7vG7zO5biEjCExlAfd2%2BpfWMwFaSCA dSk%3D&amp;reserved=0 %2Fwiki.matronics.com%2F&amp;data=04%7C01%7C%7C49e72240470042cfdcd508d8ae e36e03%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637451639107978103%7CUn known%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJ XVCI6Mn0%3D%7C1000&amp;sdata=XtSTu8URTp98OB%2Br4dTj3eN0O1mV5kFj78dEKeJH9F M%3D&amp;reserved=0 %2Fwww.matronics.com%2Fcontribution&amp;data=04%7C01%7C%7C49e72240470042c fdcd508d8aee36e03%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637451639107 978103%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6 Ik1haWwiLCJXVCI6Mn0%3D%7C1000&amp;sdata=5fySIFZoU%2FNmCCvxvy0ZV%2FBdtgwP7 SAaW%2BzujWxPiV0%3D&amp;reserved=0


    Message 3


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    Time: 01:25:05 PM PST US
    Subject: Re: Europa XS Mono Throttle cable friction and jam
    From: "MEE" <macstar1224@gmail.com>
    That's really helpful information. Thanks Bud -------- Ian McClelland Read this topic online here: http://forums.matronics.com/viewtopic.php?p=499943#499943




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