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RE: Welcome to Club SAITO ! - 12/11/2011 11:46 AM   
Beej


 

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quote:

ORIGINAL: charlie1960

quote:

max revs on ground 9600, needle wound back to 9200 on ground


is that on the rich side or lean side of 9600.
sounds like you may be leaning out.


Thanks for the comment but the 9200 is achieved by richening the needle not by over-leaning it so it may not be that.

cheers,

Beej


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RE: Welcome to Club SAITO ! - 12/11/2011 11:56 AM   
Old Fart


 

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Status: offline 		You don't say if it's a really quick aeroplane or not.If it is i've had the same problem with a 55' midget mustang and a 115.

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RE: Welcome to Club SAITO ! - 12/11/2011 2:09 PM  1 votes
charlie1960


 

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From: Palestine, TX, USA
Status: offline 		how lean is the LSN?
sometimes it can affect the hi end.
it does on mine.
if i get the LSN too lean, i get a GREAT smooth idle, but a crappy transition, and it will pop like you describe.
seems as tho it struggles to gain rpm after 3/4 throttle and pops. it has slung the prop before.

other than that, i havent got a clue. except maybe a fresh plug.........i did have some fuel once that did it too...old fuel from the season before.
hard to start and didnt want to accelerate,just wouldnt run on it. fresh fuel. pop went away.


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RE: Welcome to Club SAITO ! - 12/11/2011 8:31 PM   
DustBen


 

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From: Kearney, NE, USA
Status: offline 		Of all the 4 strokes I ever ran or owned, I was always impressed by the Saito line most of all.
One of most favorite versions was the .80 built on the .65 case. The weight to power ratio was hard to beat.




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RE: Welcome to Club SAITO ! - 12/11/2011 11:24 PM   
Beej


 

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From: Brisbane, AUSTRALIA
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quote:

ORIGINAL: charlie1960

how lean is the LSN?
sometimes it can affect the hi end.
it does on mine.
if i get the LSN too lean, i get a GREAT smooth idle, but a crappy transition, and it will pop like you describe.
seems as tho it struggles to gain rpm after 3/4 throttle and pops. it has slung the prop before.

other than that, i havent got a clue. except maybe a fresh plug.........i did have some fuel once that did it too...old fuel from the season before.
hard to start and didnt want to accelerate,just wouldnt run on it. fresh fuel. pop went away.


Thanks - I have the LSN as lean as it will go whilst keeping a smooth transition. I leaned it to the point where it hesitated mid range, backed it off until it was smooth, then for good measure richened it 1/8th turn. The strange thing about this is that the first few flights are fine and I dont change anything. Backfires have happened on climb out from take off or level flight so I dont think I am overwinding the prop to get the engine out of operational range (and the fuel is fresh). Plug is only about 10 flights old.

cheers,

Beej



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RE: Welcome to Club SAITO ! - 12/12/2011 1:15 AM  1 votes
hsukaria


 

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quote:

ORIGINAL: Beej


quote:

ORIGINAL: charlie1960

how lean is the LSN?
sometimes it can affect the hi end.
it does on mine.
if i get the LSN too lean, i get a GREAT smooth idle, but a crappy transition, and it will pop like you describe.
seems as tho it struggles to gain rpm after 3/4 throttle and pops. it has slung the prop before.

other than that, i havent got a clue. except maybe a fresh plug.........i did have some fuel once that did it too...old fuel from the season before.
hard to start and didnt want to accelerate,just wouldnt run on it. fresh fuel. pop went away.


Thanks - I have the LSN as lean as it will go whilst keeping a smooth transition. I leaned it to the point where it hesitated mid range, backed it off until it was smooth, then for good measure richened it 1/8th turn. The strange thing about this is that the first few flights are fine and I dont change anything. Backfires have happened on climb out from take off or level flight so I dont think I am overwinding the prop to get the engine out of operational range (and the fuel is fresh). Plug is only about 10 flights old.

cheers,

Beej



Just for kicks, have you checked that the crankcase ventilation is not blocked? Not sure it would cause this problem, but jus to be sure.

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RE: Welcome to Club SAITO ! - 12/12/2011 1:30 AM   
Beej


 

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Status: offline 		Ahhhh interesting thought! Last time i wiped the plane down I thought there was very little oil on the underside. Will check.

cheers,

Beej

quote:

ORIGINAL: hsukaria


quote:

ORIGINAL: Beej


quote:

ORIGINAL: charlie1960

how lean is the LSN?
sometimes it can affect the hi end.
it does on mine.
if i get the LSN too lean, i get a GREAT smooth idle, but a crappy transition, and it will pop like you describe.
seems as tho it struggles to gain rpm after 3/4 throttle and pops. it has slung the prop before.

other than that, i havent got a clue. except maybe a fresh plug.........i did have some fuel once that did it too...old fuel from the season before.
hard to start and didnt want to accelerate,just wouldnt run on it. fresh fuel. pop went away.


Thanks - I have the LSN as lean as it will go whilst keeping a smooth transition. I leaned it to the point where it hesitated mid range, backed it off until it was smooth, then for good measure richened it 1/8th turn. The strange thing about this is that the first few flights are fine and I dont change anything. Backfires have happened on climb out from take off or level flight so I dont think I am overwinding the prop to get the engine out of operational range (and the fuel is fresh). Plug is only about 10 flights old.

cheers,

Beej



Just for kicks, have you checked that the crankcase ventilation is not blocked? Not sure it would cause this problem, but jus to be sure.



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RE: Welcome to Club SAITO ! - 12/12/2011 1:05 PM   
Old Fart


 

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Status: offline 		Beej the reason i asked whether you have a quick aeroplane meant is the engine tightly cowled.In any event my first thought was that the engine is getting to hot,and you may still be to lean by the sound of it.

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RE: Welcome to Club SAITO ! - 12/12/2011 4:41 PM   
lopflyers


 

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Status: offline 		Hello fellows, I finally decided to put my P51 Miss America out of her misery. I just cant fly her so I am taking the Saito 100 out.
Now I need a plane to put it on. Suggestions?
I dont want another warbird

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RE: Welcome to Club SAITO ! - 12/12/2011 5:48 PM   
earlwb


 

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quote:

ORIGINAL: lopflyers
Hello fellows, I finally decided to put my P51 Miss America out of her misery. I just cant fly her so I am taking the Saito 100 out.
Now I need a plane to put it on. Suggestions?
I dont want another warbird


Before I can suggest something, I would want to know...
What is your skill level with flying the model planes?
What was your problem or issues with the p51?




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RE: Welcome to Club SAITO ! - 12/12/2011 8:43 PM   
charlie1960


 

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Status: offline 		whats the thread diameter and pitch for the exaust pressure nipple on the muffler????


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RE: Welcome to Club SAITO ! - 12/12/2011 10:48 PM   
Beej


 

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From: Brisbane, AUSTRALIA
Status: offline 		G'day OF,

Thanks - currently the engine is in a pulse Xt 60 which means it is quite tightly cowled around the crankcase but the engine sits up high - the entire cylinder is exposed. Will try richening both HSN and then LSN a tad more..... (although it's still strange that on the two occasions this has occurred I got in 4-5 uneventful flights until the problem started...)

cheers,

Beej

quote:

ORIGINAL: Old Fart

Beej the reason i asked whether you have a quick aeroplane meant is the engine tightly cowled.In any event my first thought was that the engine is getting to hot,and you may still be to lean by the sound of it.



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RE: Welcome to Club SAITO ! - 12/13/2011 12:05 AM   
hsukaria


 

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quote:

ORIGINAL: lopflyers

Hello fellows, I finally decided to put my P51 Miss America out of her misery. I just cant fly her so I am taking the Saito 100 out.
Now I need a plane to put it on. Suggestions?
I dont want another warbird

So many choices!! I am now assembling a Phoenix Extra 330S, size 60-90 2-stroke. Maybe it would work for your Saito 100. I am putting a 74 2-stroke on it. It has a fairly lightweight frame. Scale, but not warbird.

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RE: Welcome to Club SAITO ! - 12/13/2011 12:10 AM   
charlie1960


 

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Status: offline 		yes..... and the pulse 60 is a good one too. the twist 60. on low rates is a sweet docile flyer.
escapade. just so many that would take the 1.00 well.


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RE: Welcome to Club SAITO ! - 12/13/2011 2:08 AM   
w8ye



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Status: offline 		I love the Twist 60. I have three of them.

They work best when using computer style transmitters and exponential programming.


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RE: Welcome to Club SAITO ! - 12/13/2011 2:59 AM   
dirtrod



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From: carrollton, GA, USA
Status: offline 		lopflyer,
There is so many to choose from. I am currently
flying a 60 size spacewalker with my saito 100 and i could
not be happier. with it not sure what kit it is i got it used at
a swapt meet with no engine. It makes a great all around
sunday flyer.Not sure what style of flying u do?
Ty

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RE: Welcome to Club SAITO ! - 12/13/2011 4:04 AM   
DHC6


 

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From: Montreal, QC, CANADA
Status: offline 		Got room for another member?  I got my first Saito a few years ago now, and I have pretty much converted all my planes to Saito.  Love these engines.  I Have 2 100's, a 91, and a 125.  Just picked up another 100 from the bay for my father, cleaned it up and it runs perrrfect!


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RE: Welcome to Club SAITO ! - 12/13/2011 10:58 PM   
lopflyers


 

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From: Orlando, FL, USA
Status: offline 		Thx guys for all the suggestions

earlwb: The P51 was a nightmare since the beggining, it is a yr old and has being flown 4 times. The first two times were deadsticks, neither me nor the good old boys at the club could made the thing iddle. I put a on board ignitor and that didnt work well. Someone adjusted the valves and suggested a special plug with a tab special for inverted engines and that worked.
The next flight the gear didnt come out so it landed on her belly. Fixed that, then the canopy came out midair. 
This weekend I try to fly her again and now is very nose heavy, to the point she cant even taxi. I didnt move anything around so I have to see what shifted while in the garage. Not to mention that the monocote is becoming loose in several areas. I DONT WANT THE THING ANYMORE, Im tired of fixing a plane for 1 yr that I barely fly.

Have 5 other planes, Phoenix Extra 300, Lanier Edge 540, Funtana S 90 size, Small(59) Revolver and Small Hobby King Yak 54.

The Twist 60 and Spacewalker are nice options. I dont care about the Escapade too much.
Ive always like the Sundowner and Sbach but I dont think they come in a suitable size for my 100.  

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RE: Welcome to Club SAITO ! - 12/14/2011 1:50 AM   
charlie1960


 

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Status: offline 		GP super skybolt ROCKS with a 1.00
http://www.youtube.com/watch?v=wk5KsNPalM0

the maiden take off.

not the best quality video, my son used his cell phone to record it.
but you get an idea.


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RE: Welcome to Club SAITO ! - 12/15/2011 12:36 PM   
Old Fart


 

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Status: offline 		That was awfull to read,have a think

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RE: Welcome to Club SAITO ! - 12/16/2011 4:39 PM   
donkey doctor



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Status: offline 		Saito's ts90 twin; I have a few questions.

Are the heads one piece with the barrells? Is the camshaft ball-bearing supported? Do they oil their camshaft well?

I have heard that they are a smooth running, not particularly powerful, somewhat heavy easy starter.

This is the twin with the push rod tubes on the bottom,not on the front.

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RE: Welcome to Club SAITO ! - 12/16/2011 6:01 PM   
Hobbsy



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From: Colonial Beach, VA, USA
Status: online 		Doc, the heads are an integral part of the cylinder casting, the cam lubes very well, don't know about tje cam bearings. Try a 14x6 as on any other .90 and be pleasantly surprised.

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RE: Welcome to Club SAITO ! - 12/16/2011 6:51 PM   
w8ye



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Status: offline 		There are seven ball bearings in the 90TS.

There are ball bearings on each end of the camshaft.


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RE: Welcome to Club SAITO ! - 12/17/2011 3:48 AM   
earlwb


 

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quote:

ORIGINAL: lopflyers

Thx guys for all the suggestions

earlwb: The P51 was a nightmare since the beggining, it is a yr old and has being flown 4 times. The first two times were deadsticks, neither me nor the good old boys at the club could made the thing iddle. I put a on board ignitor and that didnt work well. Someone adjusted the valves and suggested a special plug with a tab special for inverted engines and that worked.
The next flight the gear didnt come out so it landed on her belly. Fixed that, then the canopy came out midair. 
This weekend I try to fly her again and now is very nose heavy, to the point she cant even taxi. I didnt move anything around so I have to see what shifted while in the garage. Not to mention that the monocote is becoming loose in several areas. I DONT WANT THE THING ANYMORE, Im tired of fixing a plane for 1 yr that I barely fly.

Have 5 other planes, Phoenix Extra 300, Lanier Edge 540, Funtana S 90 size, Small(59) Revolver and Small Hobby King Yak 54.

The Twist 60 and Spacewalker are nice options. I dont care about the Escapade too much.
Ive always like the Sundowner and Sbach but I dont think they come in a suitable size for my 100.  


I can understand that. I had a Ultimate Biplane that got the best of me. It you tried to do a slow roll the engine would quit. Four points were OK, inverted was OK, up and down was OK, but slow rolls would kill the engine. I tried four different engines and used a fuel pump, changed fuel lines and fuel tanks. I eventually gave up on it and quit flying the plane.




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RE: Welcome to Club SAITO ! - 12/17/2011 7:28 AM   
NM2K


 

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quote:

ORIGINAL: earlwb


quote:

ORIGINAL: lopflyers

Thx guys for all the suggestions

earlwb: The P51 was a nightmare since the beggining, it is a yr old and has being flown 4 times. The first two times were deadsticks, neither me nor the good old boys at the club could made the thing iddle. I put a on board ignitor and that didnt work well. Someone adjusted the valves and suggested a special plug with a tab special for inverted engines and that worked.
The next flight the gear didnt come out so it landed on her belly. Fixed that, then the canopy came out midair. 
This weekend I try to fly her again and now is very nose heavy, to the point she cant even taxi. I didnt move anything around so I have to see what shifted while in the garage. Not to mention that the monocote is becoming loose in several areas. I DONT WANT THE THING ANYMORE, Im tired of fixing a plane for 1 yr that I barely fly.

Have 5 other planes, Phoenix Extra 300, Lanier Edge 540, Funtana S 90 size, Small(59) Revolver and Small Hobby King Yak 54.

The Twist 60 and Spacewalker are nice options. I dont care about the Escapade too much.
Ive always like the Sundowner and Sbach but I dont think they come in a suitable size for my 100.  


I can understand that. I had a Ultimate Biplane that got the best of me. It you tried to do a slow roll the engine would quit. Four points were OK, inverted was OK, up and down was OK, but slow rolls would kill the engine. I tried four different engines and used a fuel pump, changed fuel lines and fuel tanks. I eventually gave up on it and quit flying the plane.







Don't let a model intimidate you and make you give up on it. Models are constructed of wood, plastic, foam (in some cases), screws, fittings, etc. They are not alive and they don't have it out for you.

You need to look at your models in the same way that maintenance crews look at full size aircraft - and that is as a collection of systems, made of impersonal component parts.

In the case that you described above, it is obvious that your model's fuel system is defective and needs attention. Find someone in the club that is particularly clever at analyzing and fixing model fuel systems and ask for his/her help. Don't let your model intimidate you. It is a lifeless collection of parts, nothing more - nothing less.


Ed Cregger


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