Marty_d

Has anyone had luck sourcing fuel on/off valves? Inline that is, just for a safety "off" in the cabin in case of fire etc.

A follow up question... A couple of people have said they threaded the inside of a barb and inserted the restrictor jet into it. Given the restrictor jet has a barb itself - is there any reason I can't just tap an M5 hole into the body of the manifold and have the 2 restrictor jets (tank return and fuel pressure gauge) threaded straight on to it? Yes the barbs are very small (around 4mm OD by the looks of it), I'm assuming there's a fuel safe hose of that size available? And an additional question - the back of my fuel pressure gauge looks like this. Can anyone remember what fitting they bought to connect a hose/line to this? Thanks!

Hi Bryan, I don't have a Sav, but a CH701 which is a bird of a very similar feather. Plans called for right thrust 3 degrees (0 down). I just used 3D CAD to locate the engine centreline 3 degrees from the fuselage centreline. Of course the prop plate should still be in the centre line of the aircraft, which means the back end of the engine is kicked out to the left (port). Then drew the location of the Rotax ring mount holes behind the engine and drew in a mount to fit. This seems to have worked. Having said all that, doing it with washers sounds easier if that's an option.

I would have thought a composite chassis/body would be great for corrosive environments. Possibly hard to achieve safety ratings though.

None of the older ones were pretty. My parents had a 12 in burnt orange, which was a pretty common colour.

I'll second that, Renault had great seats. My first car was a Renault 16, my Dad bought 2 for $500 and I bought one from him. Shit car but the seats were brilliant.

Looks like a great kit.

If it's the same stuff they sent me (it should be, I navigated to the ad from my purchased list) then the below should put your mind at ease. That's 20mm OD oil line, goes on easy.

You didn't hear an alarm and a mechanical voice saying "Missile launch... missile launch..."?

A couple of pics of it Skippy...

OT, paid 2/2/23, delivered 8/2/23 - so 6 days. Hong Kong is usually quicker than many locations in mainland China.

Skippy, I bought 3 lengths of this - seems like good stuff: https://www.ebay.com.au/itm/Red-3-feet-Fire-Sleeve-Braid-Flame-Heat-Shield-3-4-Fits-10AN-for-Oil-Fuel-Lines-/372637527814?mkcid=16&mkevt=1&_trksid=p2349624.m46890.l49286&mkrid=705-154756-20017-0

Happy to be corrected here, but I wouldn't have thought that a difference in distance between manifold and carbs would matter in the least. Think of the fuel system like an irrigation setup, the garden hose that's 10m long gives the same pressure as the one that's 12m long. If there's no air in the fuel system, why would it matter?

That's very nice work @rodgerc. What's the whitish stuff on the threads?

Sorry Mike! For some reason the engine photo reminded me of iBob's installation and I obviously went by that instead of looking at who posted it... 🤔

Thanks gents. So Bob - that's all brass fittings you're using? Thanks Skippy re the Mikuni jets. They seem to have an M5 thread - Bob in your photo have you pressed the jet into the end of the normal barb with the thread outward?

There's a challenge and a business opportunity for you OK. I've seen your trailer which is a masterpiece of engineering - surely you can produce a lower-cost hydraulic moving Jabiru cabin?

Help required please... I want to create the fuel manifold as shown by the Rotax Installation Manual, (image below). Banjo bolts are easily accessible as are the fittings. They're available in M10 or M12 in various threads which I can tap myself. So all I need to manufacture is the block itself which clamps onto the crossover pipe. Essentially it's just a solid block with a threaded vertical hole right through for two banjo bolts to go into, and an unthreaded hole for the crossover pipe to go through with a small bolt to tighten it onto the pipe. Questions: 1. What would this be best manufactured from? Alloy? Any particular type? 2. What about the banjo bolts? They're available in alloy, zinc coated steel and stainless... what's best for fuel? 3. The barb for the return line to tank needs to be restricted (is it 0.35mm? The manual says "PILOT JET 35"), and the barb for the fuel pressure gauge needs to be restricted to 0.5mm. How is this usually achieved - can you buy barbs that are sealed at the end and drill them to the correct size, or is there some kind of restrictor available which seems to be suggested by 6 below? As always any suggestions gratefully received. Cheers, Marty

Man of the people, huh! Nothing like parking your Roller where everyone else has to trudge in.

Big day today - for the first time a wing was put in position! Very relieved to find that the mounting surfaces meet neatly. I finished the fuel line on that wing then removed it again, would have been difficult to get to the loo with it in position.

But seriously, how does that happen? Caught cheating by a wife who can drive an excavator?

Amazingly narrow wings and tiny HS. Looks like the whole fuselage is a lifting body.

No, but it'd be nice to sit in it once or twice and then sell it, and buy something far cheaper.

Bugger, I thought my luck might change! Not this time.

Thanks all! some good leads there.