---------------------------------------------------------- Europa-List Digest Archive --- Total Messages Posted Tue 03/05/19: 5 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 12:06 AM - Re: Manifold pressure (Ivor) 2. 07:50 AM - Filler resin alternative to Ampreg (Steve Ivell) 3. 09:01 AM - Re: Filler resin alternative to Ampreg (Kelvin Weston) 4. 09:22 AM - Re: Filler resin alternative to Ampreg (Bill) 5. 04:49 PM - Re: Re: I'm puzzled, again! (Bud Yerly) ________________________________ Message 1 _____________________________________ Time: 12:06:30 AM PST US Subject: Europa-List: Re: Manifold pressure From: "Ivor" I have used yellow silicone 5 mm piping with a retrictor close to the cross Tube pick up, been working fine for 10 years so far Read this topic online here: http://forums.matronics.com/viewtopic.php?p=487934#487934 ________________________________ Message 2 _____________________________________ Time: 07:50:08 AM PST US From: Steve Ivell Subject: Europa-List: Filler resin alternative to Ampreg Hi All We are getting close to beginning filling and prep for painting and are loo king for an Ampreg alternative resin which we could use which cures faster. In our current UK climate the Ampreg takes several days to cure to a point that is can be sanded so will slow down the whole finishing operation. As it's only the finishing to the surfaces and not structural I'm hopeful ther e is a suitable alternative which won't have any adverse reaction with the existing Ampreg based structure. Any recommendations gratefully accepted?? Steve Ivell Mob: 07971 128842 E-mail: steveivell@pestproof.co.uk ________________________________ Message 3 _____________________________________ Time: 09:01:07 AM PST US Subject: Europa-List: Re: Filler resin alternative to Ampreg From: "Kelvin Weston" Hi Steve The late, great, Neville Eyre recommended the use of West 105 resin at the filling stage. I have used this with appropriate hardener and it certainly does cure quicker to the sanding state. Sands easier too. -------- Regards Kelv Weston Kit 497 kelv@kdweston.biz Read this topic online here: http://forums.matronics.com/viewtopic.php?p=487941#487941 ________________________________ Message 4 _____________________________________ Time: 09:22:56 AM PST US From: "Bill" Subject: RE: Europa-List: Filler resin alternative to Ampreg Steve, I used Alphapoxy from Aircraft Spruce. It will cure overnight and sands easily. Bill Henderson Europa Monowheel Classic N51EU From: owner-europa-list-server@matronics.com [mailto:owner-europa-list-server@matronics.com] On Behalf Of Steve Ivell Sent: Tuesday, March 5, 2019 10:49 AM Subject: Europa-List: Filler resin alternative to Ampreg Hi All We are getting close to beginning filling and prep for painting and are looking for an Ampreg alternative resin which we could use which cures faster. In our current UK climate the Ampreg takes several days to cure to a point that is can be sanded so will slow down the whole finishing operation. As it's only the finishing to the surfaces and not structural I'm hopeful there is a suitable alternative which won't have any adverse reaction with the existing Ampreg based structure. Any recommendations gratefully accepted?? Steve Ivell Mob: 07971 128842 E-mail: steveivell@pestproof.co.uk ________________________________ Message 5 _____________________________________ Time: 04:49:47 PM PST US From: Bud Yerly Subject: RE: Europa-List: Re: I'm puzzled, again! Remi and Jonathan, Of course the early 912ULS were happier running backwards than forward. If you have done all you say you have, the list gets pretty small and expen sive. Things which helped the kickback was most importantly, the soft start modul e and the new ignition modules (six wire). Careful assembly of the pickups on the electrics was also essential to assure the correct pickup went to t he correct box. An early spark just as the valves close will kick right ba ck. See your Rotax Heavy Mx manual. I have only seen this once on a very early Rotax 912ULS where the A&P found some broken wires (another problem w e all discussed before) and repaired the wires with new wires and didn=92t quite get everything wired back up right. What a nightmare. We ended up g oing to two new ignition boxes paying extreme attention to the pickup wirin g and all was fine. I was chastised by Kerry at Lockwood for not changing both boxes initially, as tinkering with one old box and putting only one ne wer one initially with the old one, really made a mess. Note that the timi ng controls changed as did the flywheel pickups in the early 2000s then aga in around 2009. The new boxes even with the original flywheel really helpe d this plane. The high torque starter was also a help on some of these older engines with soft start or with starting on one ignition technique. On a 912/914 low c ompression, the low torque spins at about 300 RPM with a supercharged batte ry or booster charger at 50 amps. The high torque starter spins at nearly 500 RPM on the 914. On the 912ULS I found the RPM still hit 400 plus which is more than enough for quick starts. The Skytec starter is OK but I went with the Rotax. I was impressed and you know what a cynic I am! I would also check for a spun crank shaft or a valve timing problem. I do n=92t do that in my shop. I pull the engine and go to Lockwood and have Ke rry speck out the problem. A spun crank is nasty expensive and is usually better to replace the entire short block. Really expensive. $14,000 min w ith labor. I had a sticky valve problem on two cylinders causing a problem which was j ust that, sticky valves. We never could figure what actually caused it but the kickback was spectacular. We redid the heads and that cleared up the problem. Changed a slightly bent valve and a pushrod, lapped the valves, r eplaced valve springs (Service bulletin) and checked the crank and ignition modules which were OK. Heck of a thing. And only about $4300 which was a bargain considering two guys for 3 days plus engine runs at Lockwood. I s uspect that the engine was over revved and hit a valve as there were some t ell tale signs on the piston carbon of the valves hitting. I=92m in Florida so cold engine starts occur only one month of the year for about 2 days. If the engine is really cold (below 0C) the cold oil and ti ght oil pump can slow the engine crank some 50 RPM on even a semisynthetic oil. Warm your engine with a blanket or something. I=92m not a fan of boc k engine heaters that use the crankcase bolts however, they make heat pads for the oil tank and crankcase that work if the cowl is wrapped fairly tigh t outdoors or in a hangar. A 100 watt bulb in the intake works if you leav e it for an hour and wrap the cowl tight. Mobile 1 MX4T or Motorcycle raci ng full synthetic oil helps, but warmth is always nice for quicker starts. Good luck. Remember you will find the problem. It is always the last plac e you check. Bud Yerly Sent from Mail for Window s 10 ________________________________ From: owner-europa-list-server@matronics.com on behalf of Remi Guerner Sent: Monday, March 4, 2019 12:27:46 PM Subject: Europa-List: Re: I'm puzzled, again! As an addition to my previous post regarding the kick-back problem, I belie ve it is useful to add the following regarding the sprag clutch replacement . After reviewing the different issues of the 912 IPC, from 2017 up to now, I discovered that Rotax has made several changes in that area over the yea rs. The sprag clutch itself has not been changed but the sprag clutch housi ng was modified several times. Housing P/N 852405 was introduced in May 200 8 with the following comment: "new housing with expanded space for sprag cl utch". Then in January 2017, P/N 852406 was introduced with the very same c omment. I guess the changes were designed to improve the behaviour of the s prag clutch. My conclusion: when replacing the sprag clutch, it is critical to replace a lso the housing and make sure the P/N is the last version. Remi Read this topic online here: http://forums.matronics.com/viewtopic.php?p=487913#487913 ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message europa-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/Europa-List.htm Web Forum Interface To Lists http://forums.matronics.com Matronics List Wiki http://wiki.matronics.com Full Archive Search Engine http://www.matronics.com/search 7-Day List Browse http://www.matronics.com/browse/europa-list Browse Digests http://www.matronics.com/digest/europa-list Browse Other Lists http://www.matronics.com/browse Live Online Chat! http://www.matronics.com/chat Archive Downloading http://www.matronics.com/archives Photo Share http://www.matronics.com/photoshare Other Email Lists http://www.matronics.com/emaillists Contributions http://www.matronics.com/contribution ------------------------------------------------------------------------------------- These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.