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RE: ASP/MAGNUM FS400AR Rebuild/Overhaul
For best power keep the 400 at 7000rpm or above and just use whatever prop gives you those numbers. Because it has a short stroke its not a torque monster and so will not turn huge props. The Evolution radials are much longer stroke and will take bigger props. Personally im sticking with 20x8 menz props from here on, I may try a 21x8 menz again at a later time but the 20x8 gives the best performance so far as the engine runs free and happy. 22x10 sounds really big but it if you are getting about 6400 on 10% then try a 22x8 with the same fuel. you should be near 7000. Props are such a minefield as some (gsonic) run very fast and others very slow. Also some props run slow but have good bite (menz/master airscrew scimitar wood) and some (master airscrew classic) run fast with no bite. so, just prop the engine between 7000 and 7600 on the ground, and if it pulls well in the air go for it.
Posted on: 5/23/2013 4:24 AM by Author "Carosel43"
in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=11520030
RE: ASP/MAGNUM FS400AR Rebuild/Overhaul
Hi Kym, I agree fully with Rev. you need to blank off all of the areas between the cylinders. just cut out some baffles from thin ply or balsa and glue them to the cowling. they should be set up as close to the engine as is possible to still allow easy fitting of the cowling. The corsair has a nice venturi effect on the cowl flaps at the back so that will draw the air through nicely. If the engine has more than an hour of use the 18% oil will be perfectly ok but I would definitely avoid the low viscosity stuff in a 4 stroke as it burns off at 200'c. now is very easy to get to 200'c when a 4 stroke overheats so I would tend to use normal klotz if you can. again its a personal choice but I think 20% nitro is overdoing it and I think 10% would be better top limit. Im if so then coolpower do a nice 10% nitro 17% oil fuel that would be ideal, I think its bright green...in any case, that's just my 2 cents! Either way welcome to the mad house ;)
Posted on: 5/23/2013 12:43 AM by Author "Carosel43"
in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=11519951
RE: ASP/MAGNUM FS400AR Rebuild/Overhaul
I guess its a case of checking all the usual stuff. make sure the glow is charged, check each plug, valve clearances, dirt in the carb etc and start again. and as has been mentioned before I have wildly different compressions on my cylinders
Posted on: 5/22/2013 3:47 PM by Author "Carosel43"
in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=11519617
RE: ASP/MAGNUM FS400AR Rebuild/Overhaul
Tim, if the compression is uneaven on the pots then some cylinders will not fire as well as the others so at certain power settings they are being driven by the other cylinders and tend to run rich. this all cools them enough for them to go out. But you are right in that the sensing glow driver should have been able to keep up, unless a plug is faulty? and while I have never put a thermometer on my engine its always pretty hot when I come down. I mean I wouldn't want to touch any part of it for more than a second
Posted on: 5/22/2013 2:52 PM by Author "Carosel43"
in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=11519575
RE: ASP/MAGNUM FS400AR Rebuild/Overhaul
BJ the esm gear should be fine in there. They are big and strong but lack some of the sierra detail and refinement. sierra are brilliant but they also cost a packet! Roger, if you were low on rpm its possible you fell off a cliff on CHT. I know this goes against what I said earlier about overheating but its possible the heads cooled off and 2 cylinders went down. Throttling back (kicking in the glow) may have relit one but not the other. The cool temps would also explain the very poor throttle response. I had the exact same issues with mine on the 21x8. unless I kept the revs up and kept moving it would cool off and give up. the issue has gone away now im using the 20x8 as im using a bit more rpm and this seems to keep it going. I have only ever from a 20x10 master airscrew and cant say I had the problem with that prop either so I could be off the mark. Long story short, its very hard to tell what the problem is as the symptoms of overheating and overcooling are (on my engine anyway) quite similar. My test for lean running is a simple loop as it will die noticeably in a loop if a little lean. the test for overcooling is to coax it back up to full power and just belt it around for a bit, if she comes back to life (you may have to throttle back once or twice to relight any dead pots) then that's your issue. Honestly, this is not a simple fly about engine, its got to be worked to keep it happy (in my experience anyway) In the short term, perhaps you can find a flying test bench for it like you plan to do with the laser 300. That's why mine is in the pacer. I wanted to test the engine out before I flew it in a scale model, but as its never been reliable enough to leave the flying test benches I have installed it in I have never used it in anything else.
Posted on: 5/22/2013 10:58 AM by Author "Carosel43"
in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=11519391
RE: ASP/MAGNUM FS400AR Rebuild/Overhaul
ahh yes, the old 'bench run only' nugget. i have fallen foul of that a few times. My enya 120 needed new bearings, conrod, ring and liner...its great now though :) and theres a laser 150 on ebay at the moment thats 'as new, bench run only' and yet it can be seen that the exhaust has been wire brushed clean and the engine its at least 7 years old. not really as new then is it? Anyway, digression asside, BJ did you get the retracts with your corsair?
Posted on: 5/22/2013 8:26 AM by Author "Carosel43"
in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=11519235
RE: ASP/MAGNUM FS400AR Rebuild/Overhaul
if a cylinder dropped out the other 4 would have been working hard and that could have caused an overheat situation
Posted on: 5/22/2013 7:26 AM by Author "Carosel43"
in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=11519151
RE: ASP/MAGNUM FS400AR Rebuild/Overhaul
Rev - The Gsonic will run up to about 7200 as i have one and tried it on my 400. the gsonic props run really fast so i think it will be ok. just watch your top end rpm as the max recommended rpm for the prop is about 6000 (theres a formula in the instruction sheet) which is crazy low. They can also be a little noisy, but in the racer im sure it will be just fine! :D Roger - I always do maidens with no cowl for the exact reasons to mentioned so i am suprised you had the issue. i think over heating is still the most likely candidate, perhaps it went lean with a lower tank position? i must say in my experience with my own engine you have to be a little bit of a heat management expert. too much prop/toolean/too slow and it overheats. to much prop at low revs, or flying for a little while at low throttle and its too cold. but of a nightmare either way. what prop were you using? BJ - the esm corsair is really nice and apparently flys very well. As with all esm models keep the weight forward! as for your issues with size, its not a proper model until you can lie down under it ;)
Posted on: 5/22/2013 7:16 AM by Author "Carosel43"
in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=11519139
RE: ASP/MAGNUM FS400AR Rebuild/Overhaul
I would not go above 22x8 on the 400. Even then i think its going to be pushing the engine. As for the spinner i will check once more with yt and see what i get.
Posted on: 5/22/2013 5:00 AM by Author "Carosel43"
in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=11519028
RE: ASP/MAGNUM FS400AR Rebuild/Overhaul
Hi Rev, if you can get me a quote for a 2 blade spinner that would be appreciated.
Posted on: 5/22/2013 3:44 AM by Author "Carosel43"
in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=11518973
RE: ASP/MAGNUM FS400AR Rebuild/Overhaul
Rev, i have not forgotten about the dome nut i owe you i have just been busy! i will try and get it done this weekend. Also i will order than P39 spinner from you if they are still in stock, i am sick of waiting for YT. i have sent you a few pm's but they dont seem to be that reliable Roger, very bad news about the Zero :( from my experience with the engine its likely it either overheated or a cylinder went out. Looking at the cowling on the zero its possible it overheated as the air can get in nicely but cant get out. To prevent this problem block off all the gaps between the cylinders. It could have been something else but it fits your description of what happened. I hope the wings can be fixed, do you have a photo of the damage?
Posted on: 5/22/2013 3:01 AM by Author "Carosel43"
in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=11518949
RE: ASP/MAGNUM FS400AR Rebuild/Overhaul
I also have the Andersen La7 and bought the 450 radial for it. Having run the 450 I do not think its powerful enough :(
Posted on: 5/21/2013 12:19 PM by Author "Carosel43"
in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=11518428
RE: ASP/MAGNUM FS400AR Rebuild/Overhaul
bloody hell that's cheap! Tim, if I remember correctly the 400 will JUST fit, ie you have to oil up the rocker covers and slide it in. ok perhaps that's an exaggeration, but it is very very tight. next I get the cowl off my La7 I will check it out. There is a chap in NZ who has a saito 325 in the La7, but without doubt you have to move the firewall back and that could be a bit of a pita! As for the corsair I guess it depends on the kit you fit into it. I mean the evo 7-77 is heavier than the 400 and not really that powerful, so if you were clever you could probably get it to 23lbs? the 400 should just about heft that about? it would be tight though I think, I was looking at it with my saito 450 in mind, but its going to be too much money for me at the moment.
Posted on: 5/21/2013 9:13 AM by Author "Carosel43"
in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=11518249
RE: ASP/MAGNUM FS400AR Rebuild/Overhaul
The 190 looks ace without doubt. I would like a big one myself!
Posted on: 5/21/2013 7:45 AM by Author "Carosel43"
in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=11518156
RE: ASP/MAGNUM FS400AR Rebuild/Overhaul
We are mainly metric over here so 17/32 is never going to happen! also that's very cheap for a drill, they all cost a fortune here :( BJ as you know I have the ESM La7 and you will have to move the firewall back by a good 30mm I think. it would be a lot of work but the model is great to fly :D I don't know if you can get hangar 9 kits easily over there but they have a new corsair out and the 400 should be ok for power. it wont be cheap though, and you need retracts on top. I have added a link to the uk site for your information. http://www.horizonhobby.co.uk/aeroonline/e1hangar9/e1-han4760/e1-f4u-1d-corsair.html
Posted on: 5/21/2013 7:02 AM by Author "Carosel43"
in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=11518107
RE: ASP/MAGNUM FS400AR Rebuild/Overhaul
I had this same problem and my solution was to put my sleeve nut in a lathe and turn it down to 13mm as I had a drill that size. I was also attacked by a prop when trying to drill it which is one reason I use wood not nylon and why I go up in 1mm steps to 13mm. If memory serves the thread on the crank is 3/8x24 unf? if so then the old Laser cranks were that size and I have plenty of suitable sleeve nut and washer sets as they are still sold as spares. these have an O/D of 12.6mm but given how 13mm drills never seem to drill 13mm holes in my props I think it will be fine. If anyone is interested I can sell you one for much less than a 13.5mm drill bit ;) just don't go mad tightening it up as its not made of monkey metal and may damage the crank if you go really mad. EDIT: I just tried one on a prop I drilled to 13mm for a laser 360v and its a lovely fit. its a fraction loose but so much better than being really tight. If anyone is interested let me know, I would guess they are going to be about £8 ($12) including shipping.
Posted on: 5/21/2013 5:46 AM by Author "Carosel43"
in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=11518047
RE: P-39 by ESM
Its all gone quiet for me as im still waiting for a spinner! I look forward to more pics of your model :)
Posted on: 5/21/2013 2:05 AM by Author "Carosel43"
in the forum "RC Warbirds and Warplanes"
http://www.rcuniverse.com/forum/fb.asp?m=11517954
RE: ASP/MAGNUM FS400AR Rebuild/Overhaul
It did indeed go for a wander. Lucky for me it was resting on the side of the head/rocker cover and was just depressing the valve. no damage seems to have been done. still, its another thing to fix. sigh
Posted on: 5/21/2013 1:18 AM by Author "Carosel43"
in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=11517941
RE: ASP/MAGNUM FS400AR Rebuild/Overhaul
Persistance? I am known for being stubborn, and I know how to sort out all the issues: make my own. It couldn't be any worse, even if I make it with my feet. Bj, the failed component is up in the rocker cover. its the little clip that stops the rockers falling off the rocker shaft. It should be noted by the way that my rocker covers had a good amount of oil in them and the bases of the pushrod tubes are all weeping oil everywhere. its a right old mess but at least its wet. The only other comment I have about oil is make sure you turn over a number of times to get any oil out of the lower cylinders. I always do this anyway but have found it very important with the extra oil. Even after start up it was running on 3 cylinders for a little while until the bottom two cleaned out (in a cloud of white smoke I might add) and came on song.
Posted on: 5/20/2013 7:26 AM by Author "Carosel43"
in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=11517008
RE: ASP/MAGNUM FS400AR Rebuild/Overhaul
lol, I do in fact spend most of my time throttling back to try and keep the top end rpm under control. In a dive I am well back to about 30% throttle to prevent over revving. Any climbs I try and do with momentum so I am not relying on the engine alone. Its a little disappointing to have another failure but at least its an easy part to fix without stripping the whole engine down.
Posted on: 5/20/2013 5:13 AM by Author "Carosel43"
in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=11516886
RE: ASP/MAGNUM FS400AR Rebuild/Overhaul
[quote]ORIGINAL: SJN Lots of bad luck Carosel.....you must be driving the engine too hard [:)] Roger, where have you put teh CG on your zero ? Im working on the wheel wells on mine, and hope to have mine ready soon too [/quote] I think its just the crapness of the old SC to be fair. the rockers move side to side so much that the clip probably gets quite a beating. Anyway I will chat to Just Engines tomorrow and see what the story is. And I don't push it THAT hard, I mean I only use 99% power in dives ;) lol
Posted on: 5/19/2013 1:32 PM by Author "Carosel43"
in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=11516272
RE: ASP/MAGNUM FS400AR Rebuild/Overhaul
Well, as expected my engine is again broken. bloody thing. Anyway this time I flew and was not happy with the performance, knowing that my valve clearances were a likely to have moved I decided to check them only to discover that the E clip retaining the exhaust rocker on cylinder 3 had broken up :(
Posted on: 5/19/2013 9:58 AM by Author "Carosel43"
in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=11516085
RE: ASP/MAGNUM FS400AR Rebuild/Overhaul
Tim is quite right, it can take 15 seconds sometimes for the radial to respond to tuning changes. Roger your engine is sounding good and strong with no rpm sag at high power. personally I would just get it in the air! Also I would change the wheels on the zero as they look a little small and larger ones may help ground handling. I can see that you have a nice smooth concrete runway but I would still suggest going larger. On my bumpy old grass runway big wheels are a lifesaver!
Posted on: 5/19/2013 1:56 AM by Author "Carosel43"
in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=11515793
RE: ASP/MAGNUM FS400AR Rebuild/Overhaul
BJ you and are in the same boat with the rockers. its why I gave up with mine and left them in a more or less ok state. you are not alone in having differing compression on your pots though, mine has 2 gooduns, 1 is pretty good, 1 is 'meh' and one is...well I assume its there but if it is I cant find it! some extra rpm will help bash the valves into the seats and bed in the rings. Tom, my engine looks like a dog, I mean honestly its a right state. what you are admiring there is laziness of the highest calibre! But, in flight she was sounding pretty happy and the performance was good. After the camera gave up I even let my young 14yr old student/camera man (bloody brilliant pilot considering his experience) have a crack at it and he was very surprised by the range of throttle required to keep the rpm constant and the general weight of the model through maneuvers. It was a shock to him that I manage to make the model do what it does! If the weather is kind tomorrow I may take her out again. oh and by the way, oiling through the new nipple with the engine running at idle works well as you can tell the oil is getting around by the smoke/smell from pots 3 and 4. when they start puffing white smoke you can call it lubed and shut it down!
Posted on: 5/18/2013 10:43 AM by Author "Carosel43"
in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=11515208
RE: ASP/MAGNUM FS400AR Rebuild/Overhaul
IT DIDNT EXPLODE :D all the wiggly bits are still connected and seem to be happy. I have no idea how long the Loctite will hold on to the bearings but for the moment all seems well. Below is a pic of the new oil nipple and oil hole in the front housing (blanked off with am m3 grub screw) [IMG]http://i1237.photobucket.com/albums/ff470/Carosel43/P1080922_zpsd56db245.jpg[/IMG] When running a fair amount of oil comes out of the new nipple so I will add a pipe to keep it off the model. I also found (when oiling the engine at idle) that there is in fact quite a bit of pressure from that nipple. As such I have changed my recommendation regarding the drain nipple in the bottom. If you mod your engine like myself and BJ then close it, if you don't mod it then it should probably be open. I think my current setup is how the original OS was when the instructions were written. Anyway, just to prove it did work, heres a video :D sorry it cuts out, memory card was full http://www.youtube.com/watch?v=9sfTT6awhto&feature=youtu.be
Posted on: 5/18/2013 8:01 AM by Author "Carosel43"
in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=11515120
RE: ASP/MAGNUM FS400AR Rebuild/Overhaul
BJ you just have to judge it. when leaning out it will pick up but eventually will start sounding hard. It drops off quite a bit when you go too lean. if its holding good rpm then you are more than likely safe, especially as your lean runs will only be for 15 seconds max for the first gallon of fuel. And even then how often do you fly at full beans? Also 3 turns is not mega rich on this engine. I have had mine out to 4 easy in the past, I forget my flying setting...I will check it later Anyway my engine is all back together and the glow battery is on charge. My next post should be telling you how excellent my days flying was....either that, or it will tell you how many spares I need this time!
Posted on: 5/18/2013 2:16 AM by Author "Carosel43"
in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=11514967
RE: ASP/MAGNUM FS400AR Rebuild/Overhaul
My 400 is now safely back in one piece and back in the model. all in all things have gone well, although my fool proof system of little pots has failed me and I have misplaced one of the intake tube bolts. bit annoying but im sure I can find a replacement. other than that the only drama was two rounded off rocker adjusting nuts (I think they were made of the stuff they use for making those stress ball things) which means cyl 3 has less than perfect valve clearances. to be fair the other 4 pots are not great, I got tired of chasing the clearances and so left them all at an 'about right' setting. If the rain stops for the weekend I will certainly run it up and try to fly. I will also get photos of the new lubrication holes and post them for you guys to see.
Posted on: 5/16/2013 1:38 PM by Author "Carosel43"
in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=11513464
RE: ASP/MAGNUM FS400AR Rebuild/Overhaul
Don't look at me, I have plenty on my plate as it is! that said I think there is room on the 400 pistons for another ring. it probably wouldn't be hard to do. But anyway I have enough going on right now with 3 prototypes in hand and 3 on the drawing board. Not to mention a maintenance list for my models that's as long as my arm, and a list of half finished models as long as my leg! I do however like BJ's idea of fuelling the engines with high % hooch. that way if its all gone wrong you can just drink the fuel and forget all about it!
Posted on: 5/15/2013 11:07 AM by Author "Carosel43"
in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=11512361
RE: ASP/MAGNUM FS400AR Rebuild/Overhaul
As it was sent air mail I believe they use long range pigeons as snails have a hard time getting off the ground ;)
Posted on: 5/15/2013 12:42 AM by Author "Carosel43"
in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=11511977
RE: ASP/MAGNUM FS400AR Rebuild/Overhaul
Right then. I had another go at the 400 today and i almost kicked the whole model over the fence. for reasons i cannot begin to understand it refuses to start in any kind of useful way. by that i mean it takes 15 minutes to get it going. i have cleaned the carb as i suspected fuel issues to begin with, i have tried tuning to no avail. my lingering suspicion is the glow driver as the plugs are not glowing bright orange, in fact they are only just a dull red...sometimes. the thing is as its always started before i have never looked at the plugs and so dont know if they were always like that. however something has changed as it never used to be this much of a pain in the butt. Anyway, i did get it started but it wont idle below 2000rpm and it will just run down and stop. i did get a video however so at least you can hear it. http://www.youtube.com/watch?v=jkw-5B3LQzY&feature=youtu.be
Posted on: 9/18/2012 1:13 PM by Author "Carosel43"
in the forum "Glow Engines"
http://www.rcuniverse.com/forum/fb.asp?m=11232672
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