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RE: Welcome to Club SAITO ! - 8/31/2005 10:17 PM   
IronCross



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Status: offline 		Thanks for clarifying it Bill... Always an education reading your posts FYI the early .72 also had a very weak (plastic) backplate on it also... The replacement I bought for it was much sturdier and has yet to break... They keep changing these dang mufflers and it is hard to get the earlier replacements... To use the latest ones (cast) requires a new cowl on a few of my planes... Kind of frustrating..

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RE: Welcome to Club SAITO ! - 8/31/2005 10:28 PM  1 votes
William Robison



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Status: offline 		IronCross:

Sorry, intended to include this last time.

The 10mm thread is a few thousandths of an inch larger than 3/8", the 12mm is a hair smaller than 1/2", and the 14mm is 9/16" diameter. Hope this helps your ID of the pipes.

Bill.

PS: Thanks for the kind words. wr.

EDIT: And the plastic back plates do not help to keep the intake pipes held firmly. The later ones are better, but the pipes are still prone to vibrate and destroy the upper seal. wr.


< Message edited by William Robison -- 8/31/2005 10:31 PM >

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RE: Welcome to Club SAITO ! - 9/1/2005 1:07 PM   
tukkus


 

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Status: offline 		Is anyone running a .82 with 30% heli fuel and what prop are you using?....i have a UCD .46 propped with a 14wx4 on 15% COOLPOWER and i was wondering what prop to use with 30%

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RE: Welcome to Club SAITO ! - 9/4/2005 3:12 PM   
SigMan



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Status: offline 		Your in Like Flynn, Donkey Doctor !

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RE: Welcome to Club SAITO ! - 9/5/2005 5:26 AM   
seanychen



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quote:

ORIGINAL: tukkus

Is anyone running a .82 with 30% heli fuel and what prop are you using?....i have a UCD .46 propped with a 14wx4 on 15% COOLPOWER and i was wondering what prop to use with 30%


See my rpm and thrust data in this thread:

http://www.rcuniverse.com/forum/m_3311178/tm.htm

I recommend APC 14x6.

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RE: Welcome to Club SAITO ! - 9/5/2005 5:31 AM  1 votes
Hobbsy



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Status: offline 		Sean, that is about 1,100 rpm faster than my .82 gets on 10% WildCat and an APC 14x6, you done good.

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RE: Welcome to Club SAITO ! - 9/5/2005 5:38 AM   
seanychen



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quote:

ORIGINAL: hobbsy

Sean, that is about 1,100 rpm faster than my .82 gets on 10% WildCat and an APC 14x6, you done good.


Saitos this size gains about 500 rpm for each 10% nitro added.

I think using low nitro on Saito is like putting a stock muffler on a 2 stroke: getting less power for your $.

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RE: Welcome to Club SAITO ! - 9/5/2005 7:41 AM   
khodges


 

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Status: offline 		Just added another Saito to my flock, herd, covey, whatever; a FA-91S. One question: it's called Special (the "S" after .91). What's special about it? I don't see that designation after any of the other models. It's not made of gold, there's no supercharger, it doesn't have anything on it the other Saitos don't have; so, what's special?

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RE: Welcome to Club SAITO ! - 9/5/2005 7:47 AM  1 votes
William Robison



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Status: offline 		The "S" versions usually have hotter cams, more peak power, and worse idle than the older ones.

Saito claims they idle as well as the older ones, that has not been my experience.

Bill.

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RE: Welcome to Club SAITO ! - 9/7/2005 12:34 AM   
Ernie Misner



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Status: offline 		Bill, great info as usual. Thanks! Now..... which type of silicone for the intake o-ring.... red? And how do you make a restrictor for your restricted straight pipes???

Thanks again,

Ernie

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RE: Welcome to Club SAITO ! - 9/7/2005 1:24 AM  1 votes
William Robison



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Status: offline 		Ernie:

I normally uise the plain blue RTV for a couplle reasons. One, it's the most common and easiest to find, and two (the main one) it's the least expensive and I'm cheap.

Two ways to form a restrictor in an exhaust pipe that wont come loose and fall off. Put a steel bar in a heavy vise, sized about 1/2 the diameter of the pipe. Then use the bar as a mandrel and using a hammer, just peen the end while turning the pipe on the mandrel.

The second way, if you have full access to the pipe all around, is using a tubing cutter with a very dull cutting wheel. Instead of cutting the pipe the wheen will bend a circumfrential groove in the pipe. When it's as far in as you want it you can cut the pipe normally at the outlet end of the groove, or right in the bottom of the groove.

I'm working up a post/thread about making inlet stacks for any engine, not just Saito, I show the peening with a mandrel there. If it's unclear here, and you can't wait, I'll post on it here.

Bill.

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RE: Welcome to Club SAITO ! - 9/7/2005 6:46 AM   
khodges


 

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quote:

ORIGINAL: William Robison

The "S" versions usually have hotter cams, more peak power, and worse idle than the older ones.

Saito claims they idle as well as the older ones, that has not been my experience.

Bill.



How do you reckon this is gonna affect power delivery for a DR-1 (Great Planes). Obviously, this engine won't be spinning at top rpm very much, planning on a prop in the 15-5 to 16-5 range, depending on what rpms I can turn the larger prop. If I can't get more than 9000 with the bigger one, I'll drop down an inch. Not that I want a lot of top end, but I tend to size my props by how much rpm I can get. If this thing doesn't make much midrange, maybe I need to rethink using this engine for the Fokker.

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RE: Welcome to Club SAITO ! - 9/7/2005 7:12 AM  1 votes
William Robison



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Status: offline 		KHodges:

It's a relative thing. The "S" engines still have good mid range, and throttle well. And at the top end, there is more power to be had.

But my old ABC FA-120 engines, the low cam ones, idle nicely at 1700-1800 rpm with a MAS 14x8 three blade prop. The FA-120S, while it will spin more prop, is a bear to get under 2200 rpm at idle. Still idles well, just wont do it as slowly.

The "Middle" production, with the AAC cylinders and the low cams, removed the weight penalty that Saito used to have, if you can find one that might be for you if you have to have the low idle.

ABC and AAC. How to tell them apart. Easy. If you have one in each hand there's about 5-6 ounces more weight with the ABC. Looking at the cam box, the larger fins on the ABC wont let you pull the cam without pulling the cylinder first. The smaller fins on the AAC give enough room to pull the cam out with the cylinder in place.

In any case, if you buy new don't be afraid of the "S" engines - they will do the job very well.

Bill.

PS: Attached picture is two FA-120 cylinders. ABC on the left, AAC on the right. Difference in size hits you right in the eye. Please note the AAC in this case is the early FA-120S with the pipe intake rather than the cast. Otherwise interchangeable. wr.


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RE: Welcome to Club SAITO ! - 9/7/2005 11:48 AM   
udi maman


 

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From: lehavimisrael, ISRAEL
Status: offline 		hi to all
i have this saito"s
6/100
1/91
3/120
1/150
3/180
ist ok
maman udi
israel

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RE: Welcome to Club SAITO ! - 9/7/2005 4:23 PM  1 votes
Hobbsy



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Status: offline 		That's not fair Udi, you have one more than I do, you need to add a 2.20 to your list.

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RE: Welcome to Club SAITO ! - 9/7/2005 4:50 PM   
SigMan



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Status: offline 		hey Udi, 14 saitos must mean 14 planes ? WOW ! you must have to rent hangar space at the local airport..lol.

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RE: Welcome to Club SAITO ! - 9/7/2005 8:05 PM   
grumpE



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Status: offline 		Just one. A real purdy 91 that I could not resist. I agree with a previous post, once you have one you want more more more. Way better looking than my Magnum 91 FS or OS 70s (2) or 91.

Eric

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RE: Welcome to Club SAITO ! - 9/7/2005 10:05 PM   
beelzebubishere


 

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Status: offline 		Uhhhhhh......does having one on order qualify a person for membership......Graupner J-3 arrived this morning, and I just got off the phone with Cheif, FA56 is on the way, $27.05 CHEAPER than LHS, and that includes the freight too.

So anyway.....FA56 owner-in -waiting here.....

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RE: Welcome to Club SAITO ! - 9/7/2005 10:50 PM   
sdcranford


 

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Status: offline 		I want to join. Getting ready to buy a 100 for a Four-Star 60. Heard nothing but good things about
these motors. Where is the best place online to purchase?

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RE: Welcome to Club SAITO ! - 9/7/2005 11:17 PM   
SigMan



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Status: offline 		http://www.horizonhobby.com/Search/Default.aspx?SearchTerm=saito&OverallCatID=

horrizon hobbies carries saitos copy and paste link above.

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RE: Welcome to Club SAITO ! - 9/7/2005 11:22 PM   
SigMan



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Status: offline 		kliff and Mr. Scranford, you guys are official members. WELCOME ABOARD!

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RE: Welcome to Club SAITO ! - 9/7/2005 11:42 PM   
sdcranford


 

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Status: offline 		Glad to be aboard, now I've got to get a Saito, no choice now that I belong to this club!

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RE: Welcome to Club SAITO ! - 9/8/2005 12:00 AM   
beelzebubishere


 

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RE: Welcome to Club SAITO ! - 9/8/2005 12:02 AM   
khodges


 

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quote:

ORIGINAL: William Robison

KHodges:

If you have one in each hand


One Saito in the hand is worth two on the LHS shelf . Thanks for the info. I have two of the ABC Saitos, a FA-65 and FA-80, and they do run better than my other ones, especially the idle and low end.

I'd like to see Saito come out with a seven cylinder radial, maybe a 2.80 or 3.92, using the .40 or .56 top ends. Gotta compete with those Seidels and Technopowers!!

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RE: Welcome to Club SAITO ! - 9/8/2005 12:18 AM   
futaba1024


 

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From: staffordshire, UNITED KINGDOM
Status: offline 		Hi Guys.
Love em to bits, at the moment have, 40a,50,56,72,91x2 (my favorites) and 180 which is in the Flair Giles 202 140 (CMP in the states I think), pictured here.
Cheers

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