Ron Gray
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Yesterday, too high to see it clearly was, I think, a Sea Fury, flying over our flying site in South Norfolk. It was doing big loops in and out of the clouds, what a sound! Shame it didn't come lower. Edited By Ron Gray on 07/10/2017 18:22:40
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Didn't think you were John and I was tempted to make some standoffs as per the gassers, after all, it would have a lot easier and quicker! Threatening rain has curtailed garden duties so infernal management has let me back into the workshop!
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I agree John, all my gassers have them, albeit the largest are powered by DLE55s, and they don't appear to have a problem. But I did take on board what Jon said hence the ply ring. I was going to make an alloy one but when I checked my stock the only lump I had was 25mm thick so would have fallen short by 5mm. I also thought about making one to go between the engine and its mounting ring, as that would be a smaller diameter and I have plenty of bar stock from which to turn it, but have shied away from that. Doing some gardening today so won't be able to get back onto it until later on this afternoon but will hopefully have holes drilled and have it fuel proofed by early evening giving me a bit of time to sort out the tank fixing and plumbing.
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I don't think that will be a problem as it is only a spacer with the fixing bolts passing through it and the bulkhead to T nuts located behind. Arguably I could just have grooves in the ring for the bolts to rest in, at the end of the day the full engine mounting ring is supported by the ply ring and any direct loads will be transmitted back through it. To negate torsional loads I will epoxy the ring to the bulkhead.
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Standoff ring made:
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I'm away tomorrow and flying on Friday so won't get chance to do any more work on it until the weekend. Hopefully then I'll be able to see the challenge of the cowl installation and all that that entails.
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Not too sure yet about the exhausts but when I had a quick look I think the problem is more one of the correct angle for the exhausts rather than length but will know more once it's all mounted correctly. Am rather into reverse flick starting at the moment, just twisting the spinner in the reverse direction looks and feels 'cool'. But to be honest in haven't tried that method on any of my gassers, for those it's the good old gloved flick. Having said that, one of my gassers doesn't like starting that way so I have to resort to the electric wrist so no problem doing that with the 160. I'm planning to use glow drivers for the plugs (not on board glow) but do take your point about fault diagnosing.
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Looks like posts crossed! Take your point about cooling Jon and on all of my gassers (and the 1 glow!) I make an effort to direct air to the cylinder and work on the basis of 1 in 4 out! A cursory look at the cowl leads me to think that I may need to have 2 deflectors from the intake to the cylinders, pack out the back of the cowl (useless airspace) and then form an opening in the underside near the rear. I need to do that anyway to gain access to the carbs, how else can I choke the engine or could I just prime them instead? Exhaust outlets are going to be interesting!
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The 160 has a circular engine mounting so I need to make a ply ring for it. I did think about the standoffs but have been advised not to go down that route by Jon. Nearly finished the Sbach repairs so may be able to get into it this weekend as we're flying next Monday!
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Too true Rich, all of my gassers have standoffs so maybe I should do the same here, it will certainly be easier and less time consuming to turn up 4 of those!
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Laser 160v delivered today and what a beauty it is! I drilled out the mounting holes and temporarily attached it to the bulkhead then tried the cowl, it swallowed the 160 and no openings cut for it, wow! Then realised that the engine needs to move forward by 30mm so now have to make a ply ring packer or machine an alloy one plus there will be quite a bit of cowl cutting required. Didn't realise that Laser don't supply glowplugs with their engines so will have to get some of those. What with the above plus a bit of a rebuild on an Sbach due to losing its U/C it probably won't be ready until some time next week.
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Only thinking ahead Jon, to the LA-7!
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Warbird Replicas Bf 110 club.
Ron Gray replied to Nigel Dell's topic in Building from Traditional Kits and Plans
Now that explains why - thanks KK. -
On advice from Jon I added the other feed line to fuel the 160v, otherwise, if I used a T piece,, 1 carb may draw fuel from the other.
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Aw, c'mon Geoff, you know that deep down inside you really do want to sell that Laser as it's only gathering dust!
