EQ1

Isn't it what he said? Moving in opposite direction ...

SrTelemaster150

He did state that they were moving in opposite directions but everything else he posted suggested a single crank throw.

Aside from the top end, there is nothing similar between the 2 engines.

EQ1

Vasek, would you like to open a new thread, where we can discuss these things?

vasek

My Feedback: (4)

Thanks guys, I new I was asking the right people here!

I will open a new thread

Cheers, V.

Carosel43

take off the rocker covers and see if the click comes when a valve is being depressed. If so then don't worry as its normal

EQ1

Interesting comment from you. Could you please explain what the reason is?

SrTelemaster150

It's probably the valve coming off the seat. If there is any lube between the valve & seat it will cause a slight crack or tic as the bond is broken. W/castor it can be quite loud although i did notice the OP said it was NIB. I'm not sure what ASP used as assembly lube, but if is tacky it could cause a distinct noise as the valve opens.

EQ1

Yeah, see what you are talking about, but this should make a sound more like a "pop" rather than a "click" as he said and I also experienced.

SrTelemaster150

I fretted over my 1st saiti FA150 because it made a loud crack as it turned over. It very distinct & sounded like something breaking.
It turned out to be the exhaust valve coming off the seat. I was using Byron's 4-stroke fuel that had some castor in it. After swtching to all synthetic Cool Power, the sound is not nearly so distinct.

vasek

My Feedback: (4)

Thanks C, I'll check it out .

Hey guys, it would help if you reply in the new forum I started for the twin. It would help to get it going
http://www.rcuniverse.com/forum/glow...-160-twin.html

BJ64

Put some big-arsed 1-inch outlets with 10 inch extenders on the 'pentagon pipe' - not much difference at all.

Pretty quiet, actually.

Has been a great experiment though. Bloke's gotta be happy when he's out in his "shop"... cuttin..brazing... swearing (a lot)

BJ

Kmot

My Feedback: (24)

Did I miss the video?

BJ64

Neh - was getting too dark too quick, and I was cranky as all hell by then anyways.

Was gonna nip upstairs and get the cam, but I was covered with oxy stuff, then castor oil etc... and I din wanna get all that crap on my cam.

It's pretty windy today, but it may taper off by evening. Might see if I can get a minute or two of vid/sound. It's nothing really spectacular...

BJ

Kmot

My Feedback: (24)

Ahh, but it is different. And new. And one of a kind. And hand made.That makes it special in my mind.

BJ64

Looks more like an aborted plumbing job

If the weather is kind this arvo, I'll fire it up and do a short vid

BJ

Carosel43

The saga of my 400 continues....

Yesterday I took it out for what was supposed to be its last flights. The model was going to be sold and the engine mothballed. The reasons for this were deteriorating performance from the engine, a model that I have no real love for (other than the novelty of flying the radial) and the fact that I need space in the hangar for my sea fury which is rapidly approaching completion. Anyway, I thought I would use this opportunity to get shot of the last half gallon of 5% nitro 20% castor fuel I had kicking around as I knew I would never run it in anything else and the radial would chew it up I only a few flights. The first two flights were unremarkable both in terms of engine performance and my enjoyment. The engine sounded rough and after landing had very poor compression (as usual). After a few hours I went for another flight and it was a different story, the engine was better and was much more enjoyable to fly. The 4th flight of the day was a transformation, I had great power, smooth running and a lovely trail of white castor smoke against the blue sky. When I landed I compression back on all 5 cylinders (one was a little weak) and it would idle for ages with the glow turned off (its never done this before) so I am now totally baffled and have a problem as I do not wish to part with it while its enjoyable to fly! While it may make a mess and stink the place out I will mix up some more fuel with 20% castor in it and see what happens. I have a few gallons of methanol and some castor I bought years ago, I might as well use them up.

Despite all its issues, it seems that my 400 is trying its best not to die. I suppose its only fair to keep on trying to use it!

BJ64

Probably likes the 20% castor - sealing up the pistons etc and maybe even giving you that 'castor glaze' to help with compression?

Keep flyin her

BJ

Kmot

My Feedback: (24)

She has a BIG heart, that's why!

Carosel43

I think you are right BJ, the castor is filling in all the gaps!! In any event, I might have to rearrange my fleet somewhat to make space for my two new models. The sea fury is huge and once out of the way I have a 6th scale sopwith pup to build. I need more space!

BJ64

I've read-up a bit on Castor Oil - and it sounds like it still has some qualities to this day that the synthetics can't reproduce.

Think I might keep using fuel mixes that contain at least some Castor

BJ

Carosel43

You are right BJ, its a great lubricant but there are some downsides. The carbon and mess it makes for a start!!

But, I was mixing up some 20% castor fuel for the radial and having poured my measured ingredients into my bottle I noticed something you wouldn't normally see. Now im sure we all remember the school experiment with liquids of different densities floating on each other etc etc. Well, here is the same experiment but with glow fuel! In the photo you can see the methanol at the top, then the 20% castor and if you look carefully the 5% nitro right at the bottom as it is much denser than the oil. A bit random, but it interested me greatly!

Don Cunningham

I have used your site as a bible when I tore down my OS FR5-300 Sirius engine. After reassembly my engine, I have three cylinders very low or no compresstion. I have rechecked the valve settings many times and still no compresstion. Do you have any advice for me?
Thank you Don Cunningham

BJ64

Thank Gawd they don't separate like a crappy Hollandaise once mixed, huh...?

BJ

BJ64

If the valve clearances are all ok and there's nothing wrong with the valve-seats themselves, you could always give each pot a small squirt of oil to see if the compression comes up.

That's assuming that everything is done-up correctly etc...

BJ

Dad_Roman

Awfully tall order there Don considering we know nothing about your project. Glad to TRY to help. Im going to list the questions that jump into my head.

1. Why did you rebuild the motor?
2. What specifically did you do to it? (parts replaced?)
3. Did you install rings on the pistons when reassembling?
4. Did you leak test the valves in each head?
5. Were you comfortable with the cam timing or did it give you trouble?

Look forward to your answers.