Recent engine acquisitions

Kris, What the...? Is that left from the machining of the induction channel or has there been a reduction bushing or something inside the crankshaft?

Here is my very latest acquisition. No motor on it but still somewhat related. A few weeks (or months) ago I answered a poll about our hobby and won this:



It is the "ELF" by Vladimir's Model in Ukraine. Wingspan is 39in, flying weight 3.35oz. It is called a DLG, which means "Discus Launch Glider". A sort of a hook is installed on the left wingtip and the plane is launched like a discus. Plenty of videos on the 'tube.

It is handcrafted, materials are a bit exotic to me. Carbon fibre wing structure, thin plastic radio compartment and the tailfeathers look like they are 3D printed.



I'll need to get some very small servos, a micro receiver and a 1S LiPo receiver battery. Probably need to move on to GHz technology, I doubt there are any receivers available that would be tiny enough and compatible with my existing 35MHz gear.

Hey TS, sorry, missed your reply almost a month ago! It would be nice to hear about your experiences and tips about flying a DLG. Slope soaring and Thermal chasing are fascinating concepts. So far I have just flown my 2 meter Riser, up to the sky with electric power and just gliding back. The area I fly in has no thermals and is relatively flat too. It is by a lake so the "lift" runs downwards there.

I have tried to cut back on buying stuff lately, but got a little carried away one night when I saw a couple of ads at the Cox Facebook group. There was a pile of misc parts, among which I spotted a metal non-vented backplate and an exhaust collector. The same guy also had a bunch of wrenches, a reset tool for .074/.09 engines, new rubber spinners and some engines. I made an offer for a bunch of stuff and this is what I ended up with:



The engines are nothing special, all with #2 cylinders but generally healthy and they also have 128tpi needles. The W type glow head looks like it's toast

The black firewall looks like it might be from a PT-19, but what about the red one?

Here is a close-up of some parts that I don't remember seeing before, and would appreciate any insight:



The small clear fuel tank is probably from an RTF plane? What about the tank mount? Cox or aftermarket? The mounting pattern is the same as the one on Bees, and the beam mount fits a Tee Dee. The little discs look like some kind of extra flywheels or nose weights (edit: the yellow one is obviously plastic, most likely a backing plate for a spinner), they fit the .049 prop screw perfectly and also have indentations made for (or by) the pattern on prop drive plates. I am not familiar with Cox or other RTF's but it would be nice to know where these came from. Just curious

I am familiar with the exhaust collector, but is it just an accessory part or was there a model that used this as standard?

The shim is just a little too big and a lot too thick to be a head gasket for a .15, could this be a timing shim? Also the Medallion carb body looks strange, is it just cut for some reason or is there a model that uses this kind of a part?

Thanks Ken, interesting fact about the Big Mig is that it has the same bolt pattern as the Tee Dee. Is it the same for .049 and .061 Big Migs? I am asking because I am building a small profile stunt plane but it just may be a tad big and/or heavy for Tee Dee. It would be nice to have a possibility to fit a Big Mig instead without any modifications.

Thanks Andras. My engine mounting point has some extra room, I unintentionelly built it a bit wide... Here's a picture of the model I am working on. It is built around a pair of general-use styro wing elements glued with their bottoms against each other to create a symmetrical profile. I will have difficulties to keep it under 230-250g which seems to be the magic number for .049 stunts. This is not entirely my own design, I have combined parts and dimensions from here&there. The profile is from Yak-55, so the Big Mig would be very appropriate



You and me both have our (possibly similar) opinions about the Soviet Union and Russia, but I must admit they have created some mighty civilian machinery too!