Welcome to Club SAITO !
05-31-2011, 09:43 AM
Senior Member
My Feedback: (1)
Join Date: Mar 2010
Location: Las Vegas,
NV
Posts: 1,278
Likes: 0
Received 0 Likes
on
0 Posts
RE: Welcome to Club SAITO !
ORIGINAL: Nikolas K
You mean .0015 inches of course, which makes it 0.03mm.
You mean .0015 inches of course, which makes it 0.03mm.
I have a .0015" feeler gauge, so that's what I use.
05-31-2011, 09:47 AM
RE: Welcome to Club SAITO !
I suspect the distributor is worried that some will have the gap so that the valve never seats. Doesn't matter if it has a gap hot, if it won't start it won't get hot.
05-31-2011, 11:04 AM
Senior Member
Join Date: Dec 2008
Location: Athens, GREECE
Posts: 136
Likes: 0
Received 0 Likes
on
0 Posts
RE: Welcome to Club SAITO !
ORIGINAL: scooterinvegas
Of course
I have a .0015'' feeler gauge, so that's what I use.
ORIGINAL: Nikolas K
You mean .0015 inches of course, which makes it 0.03mm.
You mean .0015 inches of course, which makes it 0.03mm.
I have a .0015'' feeler gauge, so that's what I use.
06-01-2011, 03:44 AM
RE: Welcome to Club SAITO !
Just a quick note on prop figures for the 82 if anyone is interested,they are slightly skewed as it was recorded with a 14x6 apc prop that had the tips splintered when doing a bad three pointer with the decatlon.Pulled 9400 out of it where-as with the old seals i was struggling to get mid eights.An engine you use all the time,that slowly goes off song over a period of months can be hard to pick for the user and you tend to ignore broader main needle settingsto concentrate on flying it.
06-01-2011, 07:29 PM
Join Date: May 2007
Location: Kirbyville,
TX
Posts: 333
Likes: 0
Received 0 Likes
on
0 Posts
RE: Welcome to Club SAITO !
Hi all,
Just want to run something by you all. Today while flying I had a catastrophic engine failure. I was doing outside loops with my P51 that has a Saito 72 old case installed. The one with the black plastic back plate. Up until now it has run great with the lowest ideal of all my engines. Anyway while flying it suddenly stopped with a loud clang sound. I landed just fine but upon checking the engine I found that the connecting rod broke at the connection to the crankshaft. I have never had an engine do this before so I wanted to make sure I repair it correctly.
So, what all should I replace? Of course the:
Connecting rod
Gasket set
I will have to pull the piston to get to the connecting rod so should I replace the piston ring, and piston pin?
Up until now the backplate has not been an issue but should I go ahead and replace it?
06-01-2011, 08:35 PM
Join Date: Dec 2006
Location: Trussville, AL
Posts: 1,561
Likes: 0
Received 0 Likes
on
0 Posts
RE: Welcome to Club SAITO !
Hi guys,
Im thinking about buying one of saitos fg 14 gassers. I know they came out a few years ago and I heard some engine were a little tricky to tune. I think I could handle the tuning part ok but I was more wondering about their reliability. I have quite a collection of saito glow engines that never let me down but I have not yet tried one of their gassers. Are they still pretty reliable engine? And just to be sure, the saito 14 fg fits in the same bolt pattern as the saito 82 glow version. I think they are the same engine except one is glow and the other is gas, is that correct?
Thanks,
David
Im thinking about buying one of saitos fg 14 gassers. I know they came out a few years ago and I heard some engine were a little tricky to tune. I think I could handle the tuning part ok but I was more wondering about their reliability. I have quite a collection of saito glow engines that never let me down but I have not yet tried one of their gassers. Are they still pretty reliable engine? And just to be sure, the saito 14 fg fits in the same bolt pattern as the saito 82 glow version. I think they are the same engine except one is glow and the other is gas, is that correct?
Thanks,
David
06-02-2011, 06:30 AM
Senior Member
Join Date: Dec 2008
Location: Athens, GREECE
Posts: 136
Likes: 0
Received 0 Likes
on
0 Posts
RE: Welcome to Club SAITO !
ORIGINAL: Sharpeye22
Hi all,
Just want to run something by you all. Today while flying I had a catastrophic engine failure. I was doing outside loops with my P51 that has a Saito 72 old case installed. The one with the black plastic back plate. Up until now it has run great with the lowest ideal of all my engines. Anyway while flying it suddenly stopped with a loud clang sound. I landed just fine but upon checking the engine I found that the connecting rod broke at the connection to the crankshaft. I have never had an engine do this before so I wanted to make sure I repair it correctly.
So, what all should I replace? Of course the:
Connecting rod
Gasket set
I will have to pull the piston to get to the connecting rod so should I replace the piston ring, and piston pin?
Up until now the backplate has not been an issue but should I go ahead and replace it?
Hi all,
Just want to run something by you all. Today while flying I had a catastrophic engine failure. I was doing outside loops with my P51 that has a Saito 72 old case installed. The one with the black plastic back plate. Up until now it has run great with the lowest ideal of all my engines. Anyway while flying it suddenly stopped with a loud clang sound. I landed just fine but upon checking the engine I found that the connecting rod broke at the connection to the crankshaft. I have never had an engine do this before so I wanted to make sure I repair it correctly.
So, what all should I replace? Of course the:
Connecting rod
Gasket set
I will have to pull the piston to get to the connecting rod so should I replace the piston ring, and piston pin?
Up until now the backplate has not been an issue but should I go ahead and replace it?
Why was that?Overreving,insufficient lubrication and/or overheating?What do you suspect?
06-02-2011, 07:16 AM
Join Date: May 2007
Location: Kirbyville,
TX
Posts: 333
Likes: 0
Received 0 Likes
on
0 Posts
RE: Welcome to Club SAITO !
Old Fart,
I got a good laugh from your post.
Nikolas K,
Thanks for the advice. I will check all you suggested. I am not sure why the connecting rod failed. I was running it on the rich side and I use 20% lube that consisted of 16% synthetic and 4% Castrol. I had checked the temp after the 1st flight as I usually do and it was well within acceptable limits. I did not hear any high wine from the engine before the sudden failure. I guess sometimes metal just breaks from fatigue.
Below are couple of pics of the failed part.
I got a good laugh from your post.
Nikolas K,
Thanks for the advice. I will check all you suggested. I am not sure why the connecting rod failed. I was running it on the rich side and I use 20% lube that consisted of 16% synthetic and 4% Castrol. I had checked the temp after the 1st flight as I usually do and it was well within acceptable limits. I did not hear any high wine from the engine before the sudden failure. I guess sometimes metal just breaks from fatigue.
Below are couple of pics of the failed part.
06-02-2011, 07:47 AM
RE: Welcome to Club SAITO !
It looks like a brittle tension type failure. Could the piston have seized and the inertia of the prop and all just kept on going to break the con rod? A recent rod failure here on rCU showed an elongated crank end con rod bearing hole which I guess could be caused by the lower end seizing on the crank pin. This one here is different, as it looks like no yielding, just fracture. JMHO.
Sincerely, Richard/Cub Saito #635
Sincerely, Richard/Cub Saito #635
06-02-2011, 07:57 AM
Join Date: May 2007
Location: Kirbyville,
TX
Posts: 333
Likes: 0
Received 0 Likes
on
0 Posts
RE: Welcome to Club SAITO !
Nikolas K,
I got the engine used off of e-bay when they had only been out a short time. I however have put upwards of 150 hours on it. A lot of flights in several airframes. This little engines has outlasted several ARFs. Of all my engines it has been my favorite.
I have not tried to move the piston yet. I was waiting to take the engine apart and flush the lower end of the cylinder of any lose metal particles before moving the piston.
I got the engine used off of e-bay when they had only been out a short time. I however have put upwards of 150 hours on it. A lot of flights in several airframes. This little engines has outlasted several ARFs. Of all my engines it has been my favorite.
I have not tried to move the piston yet. I was waiting to take the engine apart and flush the lower end of the cylinder of any lose metal particles before moving the piston.
06-02-2011, 02:19 PM
Senior Member
Join Date: Dec 2008
Location: Athens, GREECE
Posts: 136
Likes: 0
Received 0 Likes
on
0 Posts
RE: Welcome to Club SAITO !
ORIGINAL: Sharpeye22
Nikolas K,
I got the engine used off of e-bay when they had only been out a short time. I however have put upwards of 150 hours on it. A lot of flights in several airframes. This little engines has outlasted several ARFs. Of all my engines it has been my favorite.
I have not tried to move the piston yet. I was waiting to take the engine apart and flush the lower end of the cylinder of any lose metal particles before moving the piston.
Nikolas K,
I got the engine used off of e-bay when they had only been out a short time. I however have put upwards of 150 hours on it. A lot of flights in several airframes. This little engines has outlasted several ARFs. Of all my engines it has been my favorite.
I have not tried to move the piston yet. I was waiting to take the engine apart and flush the lower end of the cylinder of any lose metal particles before moving the piston.
To be sure about the cause, the rod needs metallographic analysis...which of course no one bothers to do for a aeromodelling engine. IN a full scale aeroengine, this would have meant complete cancellation of the type approval untill investigation of the issue takes place.Then issuing special bulletins etc...
Many things could possibly have caused it.In any case, reassure that the rest of the engine is ok, replace con-rod and continue flying!
06-02-2011, 05:52 PM
My Feedback: (5)
Join Date: Dec 2004
Location: Monroe,
NC
Posts: 405
Likes: 0
Received 0 Likes
on
0 Posts
RE: Welcome to Club SAITO !
Hey I don't guess there is a way to tell if an engine has been broken in or not is there? I bought one here and seems like it hasn't ever been run so I'm breaking it in just in case. It's a Saito 56 and has been laying around too long. Going to get it into the air.
Thanks,
Jim
Thanks,
Jim
06-02-2011, 06:51 PM
06-02-2011, 08:12 PM
RE: Welcome to Club SAITO !
Guys, i've done the maiden flight on my GreatPlanes Cherokee 40 ARF /w Saito FA-80 !!!
HD720p or more, quality....
[youtube]http://www.youtube.com/watch?v=jOrKvF4xNqE[/youtube]
HD720p or more, quality....
[youtube]http://www.youtube.com/watch?v=jOrKvF4xNqE[/youtube]
06-03-2011, 03:57 AM
My Feedback: (5)
Join Date: Dec 2004
Location: Monroe,
NC
Posts: 405
Likes: 0
Received 0 Likes
on
0 Posts
RE: Welcome to Club SAITO !
"needles at 20"... clicks? manual says 2 1/2 turns on the high speed to start. Then start leaning but not over 4k rpm first 10 minutes.
06-03-2011, 04:11 AM
My Feedback: (102)
Join Date: Dec 2001
Location: Colonial Beach, VA
Posts: 20,370
Likes: 0
Received 25 Likes
on
25 Posts
RE: Welcome to Club SAITO !
Hey Jim, if you want to do the full blown break in here's the routine I use and its worked about 30 times.
10 minutes at 4,000 rich with throttle 1/4 to 1/3 open
10 minutes at 5,000, now lean HS needle for clean running but not too lean
10 minutes at 6,000, set LS needle for decent idle
10 minutes at 7,000 with bursts to full throttle
Now, peak HS needle and leave it peaked while you finish LS needle for best idle and transition, be willing to sacrifice a little on the idle speed in favor of the best transition. The first time you do this it will seem overly involved but the 2nd time its a a no brainer.
10 minutes at 4,000 rich with throttle 1/4 to 1/3 open
10 minutes at 5,000, now lean HS needle for clean running but not too lean
10 minutes at 6,000, set LS needle for decent idle
10 minutes at 7,000 with bursts to full throttle
Now, peak HS needle and leave it peaked while you finish LS needle for best idle and transition, be willing to sacrifice a little on the idle speed in favor of the best transition. The first time you do this it will seem overly involved but the 2nd time its a a no brainer.
06-03-2011, 04:19 AM
RE: Welcome to Club SAITO !
ORIGINAL: Kostas1
Guys, i've done the maiden flight on my GreatPlanes Cherokee 40 ARF /w Saito FA-80 !!!
HD720p or more, quality....
[youtube]http://www.youtube.com/watch?v=jOrKvF4xNqE[/youtube]
Guys, i've done the maiden flight on my GreatPlanes Cherokee 40 ARF /w Saito FA-80 !!!
HD720p or more, quality....
[youtube]http://www.youtube.com/watch?v=jOrKvF4xNqE[/youtube]
Very nice, perhaps the muffler coming loose affected the flight trim and it moved back and forth with flight attitude? Is that an Arise muffler? Perhaps a little heavy mounted unsupported at the end of the exhaust header tube? Maybe support it near it's end somehow? Good luck, good looking plane and of course the only brand engine to use[8D]
Sincerely, Richard/Club Saito #635
06-03-2011, 09:59 AM
Senior Member
Join Date: Dec 2008
Location: Athens, GREECE
Posts: 136
Likes: 0
Received 0 Likes
on
0 Posts
RE: Welcome to Club SAITO !
Κώστα,
Congratulations on your first flight! That is the model I want to buy, it looks very scale, flies good (I have seen other videos too) and is good for a medium level pilot that I am. Because I am thinking of putting my FA-82b on it, please inform me what propeller do you use, if you had any problems with propeller to ground clearance and if you have issues with vibration, since the airframe is designed for a smaller engine.
You surely had problems with starting as I see on your video, due to the inverted position of the engine. That makes me thing of putting the engine in side position (muffler down of course), but the other question I have is about the cowling: do you use it?Does the 80 engine fit in it, or not?
Congratulations on your first flight! That is the model I want to buy, it looks very scale, flies good (I have seen other videos too) and is good for a medium level pilot that I am. Because I am thinking of putting my FA-82b on it, please inform me what propeller do you use, if you had any problems with propeller to ground clearance and if you have issues with vibration, since the airframe is designed for a smaller engine.
You surely had problems with starting as I see on your video, due to the inverted position of the engine. That makes me thing of putting the engine in side position (muffler down of course), but the other question I have is about the cowling: do you use it?Does the 80 engine fit in it, or not?
06-03-2011, 10:42 AM
RE: Welcome to Club SAITO !
Hey there!
I used an APC 12x8 but i will also try a 13x6. Not that the 12x8 is bad, it's good but with the 13x6 i can drop the rpm during idle, a little more.
Ground clearance is not a problem.
About the starting problems......these were due to the fact that the engine is installed inverted and the nose leg is just in front of the glowplug.
So, it's really difficult to use your glowplug starter and that's the reason i am going to buy a remote glowplug starter for my FA-80.
While the engine is inverted....
You won't cut a h3ll lot of the cowl.....it will be a clean installation....i didn't install mine because it was the maiden flight
and i wanted to minimize any chance of overheating...
Your FA-82 will be awesome, i highly suggest it....and ofcourse, don't think about any vibration problems....
Just check my assembly thread here : [link=http://www.rcuniverse.com/forum/fb.asp?m=10419268]GreatPlanes Cherokee 40 ARF assembly thread![/link]
I am sure it will help you out!!!
Kostas1
I used an APC 12x8 but i will also try a 13x6. Not that the 12x8 is bad, it's good but with the 13x6 i can drop the rpm during idle, a little more.
Ground clearance is not a problem.
About the starting problems......these were due to the fact that the engine is installed inverted and the nose leg is just in front of the glowplug.
So, it's really difficult to use your glowplug starter and that's the reason i am going to buy a remote glowplug starter for my FA-80.
While the engine is inverted....
You won't cut a h3ll lot of the cowl.....it will be a clean installation....i didn't install mine because it was the maiden flight
and i wanted to minimize any chance of overheating...
Your FA-82 will be awesome, i highly suggest it....and ofcourse, don't think about any vibration problems....
Just check my assembly thread here : [link=http://www.rcuniverse.com/forum/fb.asp?m=10419268]GreatPlanes Cherokee 40 ARF assembly thread![/link]
I am sure it will help you out!!!
Kostas1
06-03-2011, 05:41 PM
My Feedback: (5)
Join Date: Dec 2004
Location: Monroe,
NC
Posts: 405
Likes: 0
Received 0 Likes
on
0 Posts
RE: Welcome to Club SAITO !
ORIGINAL: Hobbsy
Hey Jim, if you want to do the full blown break in here's the routine I use and its worked about 30 times.
10 minutes at 4,000 rich with throttle 1/4 to 1/3 open
10 minutes at 5,000, now lean HS needle for clean running but not too lean
10 minutes at 6,000, set LS needle for decent idle
10 minutes at 7,000 with bursts to full throttle
Now, peak HS needle and leave it peaked while you finish LS needle for best idle and transition, be willing to sacrifice a little on the idle speed in favor of the best transition. The first time you do this it will seem overly involved but the 2nd time its a a no brainer.
Hey Jim, if you want to do the full blown break in here's the routine I use and its worked about 30 times.
10 minutes at 4,000 rich with throttle 1/4 to 1/3 open
10 minutes at 5,000, now lean HS needle for clean running but not too lean
10 minutes at 6,000, set LS needle for decent idle
10 minutes at 7,000 with bursts to full throttle
Now, peak HS needle and leave it peaked while you finish LS needle for best idle and transition, be willing to sacrifice a little on the idle speed in favor of the best transition. The first time you do this it will seem overly involved but the 2nd time its a a no brainer.
Thanks, Jim
06-03-2011, 05:58 PM
My Feedback: (102)
Join Date: Dec 2001
Location: Colonial Beach, VA
Posts: 20,370
Likes: 0
Received 25 Likes
on
25 Posts
RE: Welcome to Club SAITO !
Jim, if it has a metal throttle arm set the LS needle even with the end of the carb barrel to start, if its a plasitic arm set the LS about 1/16th" in side the arm. If the LS needle gets too lean it render the HS needle ineffective.