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Old 11-09-2015, 02:16 PM
  #30376  
FNQFLYER
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Old Fart, tried the 30 in the Rainbow but liked the OS 20 (4S) better when it was fitted, almost similar performance and given we (my mate and I) don't race around the circuit when sport flying it was the best combo for us. On the glo plug thing WHY don't people (for "normal use") use the factory plugs or at least the factory recommended plugs. I use Saito plugs generally and OS F plugs for performance. Never had a problem with all the various fuel mixes that I have used. I once used an Enya 3 with 50% + nitro and that was interesting once I got it to run. Sold the engine soon after to a person desperate to have it. Wood ducks are every where.
Old 11-09-2015, 07:56 PM
  #30377  
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I flew an ARF 40 size trainer with a Saito 30 and it flew a lot better than I expected.
Old 11-09-2015, 08:13 PM
  #30378  
vertical grimmace
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Originally Posted by blw
In fact, that's the kit mine is going in. I was lucky enough to run across a NIB GK version. The 4*20 is about half built as Sig designed it mostly with electric in mind, so some changes had to be made. I needed an access cover to the fuel tank. I don't like torque rods so I added an aileron servo in each wing. The Saito 30 is too long for the cowling, so I had to build out the nose almost 1 1/2 inches. I also added counterbalances for the elevators and rudder.

I'm not much into high wing planes anymore, but I considered the LT-20 at first. They're just too expensive. They were $125 a year or so ago. Too much for a small kit so I passed until I saw the 4*40.
I think on the nose I would take the easy way and just have the stock extended, slab fuselage sides, like the bigger star models. Funny, after all of these years, I have never owned a 4 star. I have flown them a few times. Seems like a good platform for a leisurely engine like the .30. Originally, and the only aircraft I had it installed in, was one of the old Polks hobbies .25 sized Fokker DR1 triplanes. That was a fun combo. So fun in fact, I flew it into the ground eventually.
Old 11-10-2015, 01:34 PM
  #30379  
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I have been running FOX plugs in all of mine without issues. Also picked up some Merlin plugs, and they work well too. The only one I will be looking to get top RPM from is the 72 in the Somethin Extra. The rest are in planes that top speed is not something they need. Dont need to rip the struts off my Cubs.
Old 11-10-2015, 03:54 PM
  #30380  
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Same here, most have Fox Miracles, a couple have Taipan 4c and couple have Glo-Devil plugs, they are also very good.
Old 11-11-2015, 05:58 PM
  #30381  
p3arljam
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I have a Saito 100 FA can anyone tell me if this would be decent for a 90" wingspan Great Planes Cub? I only fly scale so i am not looking for a rocket ship.
Old 11-12-2015, 04:00 AM
  #30382  
Cougar429
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Should be more than enough for a plane up to 13 lbs or so. May have to try different props, such as 14/8, to get the right pull.
Old 11-12-2015, 04:49 AM
  #30383  
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Oh that would be an apc then.

Jammin which way are you going to mount the engine?
Old 11-12-2015, 06:30 AM
  #30384  
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Originally Posted by FNQFLYER
Old Fart, tried the 30 in the Rainbow but liked the OS 20 (4S) better when it was fitted, almost similar performance and given we (my mate and I) don't race around the circuit when sport flying it was the best combo for us. On the glo plug thing WHY don't people (for "normal use") use the factory plugs or at least the factory recommended plugs. I use Saito plugs generally and OS F plugs for performance. Never had a problem with all the various fuel mixes that I have used. I once used an Enya 3 with 50% + nitro and that was interesting once I got it to run. Sold the engine soon after to a person desperate to have it. Wood ducks are every where.
I didn't have access to Saito plugs when I first started running Saito engines but I could get the Fox Miracle plugs at the LHS (El Paso, TX). The Fox plugs worked in the engines so I looked no further. Now I live in a small town where I have to drive 65 miles to the nearest HS, so everything is mail order. Still using the Fox plugs.

CR
Old 11-12-2015, 06:35 AM
  #30385  
Charley
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Originally Posted by Sport_Pilot
If your plug is too hot you enrich the mixture to quench the plug and retard the timing, as you do you the engine will pick up speed. Being rich of peak does not mean you are at the optimal mixture, rather it is a compromise between mixture and timing. If it is too rich it will smoke heavily. If you were too switch to a cooler plug you will find that it will now pick up RPM when you lean the mixture. If it is the correct heat it will have more RPM than with the hot plug and will not smoke as much. You will have more power and better fuel economy. You cannot truly properly tune an engine without trying several glow plugs.
Huh? Never had a glow engine pick up RPM when I richened it.

CR
Old 11-12-2015, 10:22 AM
  #30386  
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These are the best plugs I have found.



I've never had one burn out.

Last edited by SrTelemaster150; 11-12-2015 at 10:28 AM.
Old 11-12-2015, 01:18 PM
  #30387  
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My thought for the day "where there is a will / estate there is always a relative"
Old 11-12-2015, 05:21 PM
  #30388  
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Originally Posted by p3arljam
I have a Saito 100 FA can anyone tell me if this would be decent for a 90" wingspan Great Planes Cub? I only fly scale so i am not looking for a rocket ship.
Thats the GP ALMOST 1/5th scale version like the SIG, and thats the engine I have on mine, and its FAST with a 14x6 APC, best prop for scale would be an Evolution 15x6 prop, if you can find one. A 70 flies the GP one with authority so the FA 100 will be plenty.
Old 11-13-2015, 05:36 AM
  #30389  
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Originally Posted by SrTelemaster150
These are the best plugs I have



I've never had one burn out.
Putz!

Trev damn right about the rellies claiming your stuff after you kark it but i reckon we are lucky living in a northern state.Down south there popey is surrounded by rellies mate,all related
Old 11-13-2015, 08:43 AM
  #30390  
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Originally Posted by Old Fart
Putz!

Trev damn right about the rellies claiming your stuff after you kark it but i reckon we are lucky living in a northern state.Down south there popey is surrounded by rellies mate,all related
Now now , I would be offended if it wasn't true ! Cheers the pope
Old 11-13-2015, 11:51 AM
  #30391  
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Originally Posted by vertical grimmace
I think on the nose I would take the easy way and just have the stock extended, slab fuselage sides, like the bigger star models. Funny, after all of these years, I have never owned a 4 star. I have flown them a few times. Seems like a good platform for a leisurely engine like the .30. Originally, and the only aircraft I had it installed in, was one of the old Polks hobbies .25 sized Fokker DR1 triplanes. That was a fun combo. So fun in fact, I flew it into the ground eventually.
I bought a 4*40 kit years ago and later sold it NIB to W8YE. I bet he has it out in the workshop right now. The 4*20 is built differently as it has a plastic cowl. No cheeks. It's easy to stack up a few 1/4" pieces around the firewall until you get it to fit. I've got to say though that as much as I love Sig models this is no Bruce Tharp design!!!

Hey Bruce, I know you read stuff on RC Universe a while back. If you're still reading please jump in and give us a few words of wisdom, okay? We're a pitiful bunch in this club and I don't know how we get by. And, I may have a few more "indestructible Flying King" stories for you.

Last edited by blw; 11-13-2015 at 11:56 AM.
Old 11-15-2015, 05:17 AM
  #30392  
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Barry, I know this is not big headlines but here is a shot of the Saito .56b I stumbled upon, I like the look of the b's. I have had two previous .56's and they are sweet engines.
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Old 11-15-2015, 08:34 AM
  #30393  
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Originally Posted by FormerDairyFarmer
Barry, I know this is not big headlines but here is a shot of the Saito .56b I stumbled upon, I like the look of the b's. I have had two previous .56's and they are sweet engines.
I have a plane you can put that one, I expect to see that engine here soon.
Old 11-15-2015, 09:38 AM
  #30394  
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We'll probably see yours first.
Old 11-15-2015, 05:27 PM
  #30395  
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Phhht
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Old 11-16-2015, 03:25 AM
  #30396  
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Did you shave before you took that selfie?

Trev spied a gold plated saito 30 in the hobby shop today for 499 aussie dollars.The gold finish looks better in the factory photos.Either side of the 30 were these real ugly large os fourstroke gas engines,ugly enough to suck the shine right outta that gold finish.
Old 11-16-2015, 06:45 AM
  #30397  
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Originally Posted by Old Fart
Did you shave before you took that selfie?

Trev spied a gold plated saito 30 in the hobby shop today for 499 aussie dollars.The gold finish looks better in the factory photos.Either side of the 30 were these real ugly large os fourstroke gas engines,ugly enough to suck the shine right outta that gold finish.
Those gold plated jobs are pretty so was the LAs OS made in blue but I never saw the point. I like hiding as much of the engine as possible inside a scale cowling so I would never get to the see the pretty gold rocker covers I pay big bucks for!
Old 11-16-2015, 09:25 AM
  #30398  
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Originally Posted by p3arljam
I have a Saito 100 FA can anyone tell me if this would be decent for a 90" wingspan Great Planes Cub? I only fly scale so i am not looking for a rocket ship.
I have the OS 70 in my Great Planes Cub 90 " and it is perfect for scale flying....the Saito 100 would be overkill if you like that...if you ever put floats on it the 100 would be perfect though....
Old 11-16-2015, 01:42 PM
  #30399  
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A new build Fokker D8 turned up at the field the other day, it has an OS 30 gas engine fitted. The whole outfit, radio, plane and engine were brand new. On start up the engine had fuel pouring out of it. Long story short the owner had dropped it (the engine) onto the carpet in his workshop. It appears to have stuffed the carby. It also appears that the carbies on OS gas engines are susceptible to any sort of impact. Comments any one?
Old 11-16-2015, 03:31 PM
  #30400  
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Originally Posted by Old Fart
Did you shave before you took that selfie?

Trev spied a gold plated saito 30 in the hobby shop today for 499 aussie dollars.The gold finish looks better in the factory photos.Either side of the 30 were these real ugly large os fourstroke gas engines,ugly enough to suck the shine right outta that gold finish.
Hey there OF , I have 3x of those ugly OS 4strokes and i think youve been hitten the wacky baccy again ! Are you like the ol Italian mobsters with the gold teeth and chains dripping off you everywhere ? The only thing is youve got the big fat guts and combover to match . I guess you could hang the 18 carrot 30 around your neck when you blow it up from too much synthetic oil , remember the castor goes into the fuel can and its not meant for personal lubrication . Cheers from your ol buddy the pope
https://www.google.com.au/search?q=c...28635%25252FHo
http://www.holytaco.com/combover-awe...photo-gallery/

Last edited by the pope; 11-16-2015 at 03:37 PM.

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