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Welcome to Club SAITO !

Old 02-06-2006, 09:01 PM
  #1526  
William Robison
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All:

For general information.

A few years ago Saito stopped using the "C" retainers on the big block engines, This is all with cylinder sizes of 1.20 and larger.The "C" clips have been replaced with proper split cotters, as are commonly found in automotive engines. They are harder to assemble but are stronger. The change was made to eliminate the clip failure that Dunbar had with bis 120. The earlier parts are no longer available, the new spring set comes with the split cotters.

See pictures. Early "C" type on the left, late split cotters on the right.

Except for one thing this is fine - the split cotters wont work with the old valves - the retainer groove is too narrow. So with new springs in an older big block you can attempt to widen the groove, reuse the older caps and clips, or replace the valves at the same time.

I do not know if this change applies to the FA-125, Saito considers a mid block engine.

Maybe Hobbsy will look at his and tell us.

Bill.

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Old 02-06-2006, 09:46 PM
  #1527  
Hobbsy
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I will, I'm tied up tomorrow but will look first thing Wed.
Old 02-06-2006, 10:15 PM
  #1528  
TimC
 
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Default RE: Welcome to Club SAITO !

Here's a photo from the 1.25 part list at Horizon:
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Old 02-06-2006, 10:22 PM
  #1529  
w8ye
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You cannot completely trust the photos on Horizon or Tower. They mess up just enough to make you wonder?

Enjoy,

Jim
Old 02-06-2006, 10:36 PM
  #1530  
William Robison
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Dennis:

I've seen that Saito site before. There's a lot of good information there, but I disgree with some of it, and other parts, like the section on the genuine Saito "Pumps" is incomplete. Suppose it's really just rivalry. and being jealous of a nice site.

I think W8YE is associated with it, if you notice an error tell him about it.

Fuel? There's nothing wrong with using heli fuel, it's normally nothing but airplane fuel with higher oil percentages. Wont hurt a thing. But do stay with a fuel that has some castor oil in the lube mix.

Back on the valve keepers. Here are two pictures again. The one on the left has the "C" clip,red arrows pointing to the ends of the "C." Right pisture has the split cotters, with the rocker arm installed you see nothbing butthe spring cap.

Bill.

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Old 02-07-2006, 02:43 AM
  #1531  
Ernie Misner
 
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Default RE: Welcome to Club SAITO !

>>> Can anyone tell me how this engine does with a MA K series 14-6. I picked up this prop to break it in with before I switch to a 13-4 for 3d. Thanks >>>

A 14 or 15x4 Wide APC prop is what most guys are using on the 82 for 3D. A 13 is too small.

Ernie
Old 02-07-2006, 06:10 AM
  #1532  
William Robison
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All:

Just had a note asking about Saito valve springs. Horizon uses a strange name for the spring set: "Valve Spring/Keeper/Retainer" which can be confusing. But it's the spring set.

Bill.
Old 02-07-2006, 05:50 PM
  #1533  
Hobbsy
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Here is a poor quality picture of the C clip spring retainers on the 1.25, also I suspected that the exhaust port on the 1.25 looked larger than the 1.50 exhaust port even though the 1.25 has a slightly smaller pipe. The 1.25 exhaust port is approximately .5 mm larger than the 1.50s. The 1.50s pipe will not begin to screw into the 1.25.
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Old 02-07-2006, 06:55 PM
  #1534  
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Can someone tell me what part numbers to order for an aluminum spinner and adapter. ( Dave Brown or TruTurn, etc I appreciate recommendations ) This will be used on a Saito 125 from Horizon and would like some recommendations from forum members.

thanks, Bill
Old 02-07-2006, 07:10 PM
  #1535  
William Robison
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Bill:

There is no specific part number for a spinner to fit one particular engine. The only thing specific to the FA-125 is that the adapter nut has to be an 8 x 1.25 mm thread.

The diameter and shape of the spinner cone depend on what airplane you want to match. Nothing to do with the engine.

Bill.

>>Edit to add: PS: Why did the edirA4uoYekaTsneilA ?
Old 02-07-2006, 07:28 PM
  #1536  
William Robison
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Dave:

So the FA-125 does use the "C" clips on the valve spring caps? Even with the hardest efforts of my best enhancement software I couldn't make them out.

Ports:

As I read your caliper the FA-150 is 9.5 mm, and the FA-125 is 9.75 mm. Not enough to worry about. Thread? Someone from Horizon came in a while back, when we were talking about the 125's exhaust thread, said the test models were 1/2-20 thread, production models are 13 x 1.25 mm thread. The FA-120/150/180 are all 14 x 1.0 mm thread.

Compare the inside diameter of the 125 and the 150 exhaust pipes.

Bill.
Old 02-07-2006, 07:30 PM
  #1537  
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ORIGINAL: William Robison



>>Edit to add: PS: Why did the edirA4uoYekaTsneilA ?

I hope it wasn't for that probing and stuff like that....[X(]

Good flying,
desmobob
Old 02-07-2006, 07:39 PM
  #1538  
tunes079
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Hey All,
I just found the tread. I am a saito fan and owner. .72,.91GK,1.00. I won't buy any other 4stroke. Have had the .72 completely disassembled, and was very
impressed with the overall quality. 72 & 91 are great runners. 100 is new and going in a funtana40 Thanks for starting a club for Saitos.
Old 02-07-2006, 07:51 PM
  #1539  
w8ye
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Saito exhaust sizes...
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Old 02-07-2006, 07:53 PM
  #1540  
William Robison
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Number 193 - tunes079

And welcome to RCU as well.

Bill.
Old 02-07-2006, 07:55 PM
  #1541  
William Robison
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Jim:

I could swear that post said the FA-125 was 1.25 mm pitch.

Bill.
Old 02-07-2006, 08:00 PM
  #1542  
bldrums
 
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They told me if I ever went unlimited vertical again while they were in the area , they would .........................something about memory...............I forget now.............render me, ah............I forget....got little pc boards imbedded in my temples.....emm...dont remember that....my wallets missing too...what was the question??
Old 02-07-2006, 08:26 PM
  #1543  
w8ye
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Those numbers for the exhaust are from the Saito Info site.

Enjoy,

Jim
Old 02-08-2006, 07:56 PM
  #1544  
crazy4planes2000
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Hi.

I live on the other side of the pond ( England) well no ones perfect. I only own one Saito an FA65 do i qualify for membership???
Old 02-08-2006, 08:11 PM
  #1545  
bldrums
 
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Hey Crazy4planes2000
Welcome !


( do you guys fly with the throttle & steering on the right?)
Old 02-08-2006, 08:18 PM
  #1546  
William Robison
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crazy4planes2000:

I don't know how the law reads in your part of the world, but over here we are not allowed to discriminate for any reason, even (SHUDDER) being British.

Besides, we've let some other Limeys in.

Haw.

You're number 194, and as said, welcome.

Bill.
Old 02-09-2006, 01:48 AM
  #1547  
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ORIGINAL: Kmot

I wish to make a proposal here.

We all know how much William (Bill) Robison has helped us with his never ending knowledge, and good humor to boot. But, truth be told, his camera sucks big time! His pictures generally are blurry, too small, and look like they were shot with a cardboard box camera. (No offense Bill!!!)

I propose, that those of us who truly appreciate what Bill has done for us and the hobby in general, buy him a new and decent digital camera. Selfish ulterior motive aside (it will make for much clearer images to see) Bill truly deserves something in return.

I ante up the first $25 bucks. We need $200 bucks for a decent quality digital camera. Give what ya can. I will find out if Bill has a Paypal account or some other way to accumulate the funds.

Thanks for participating!
The only thing worse than looking at Bill's pictures are pictures of Bill. HAW!
Old 02-09-2006, 01:57 AM
  #1548  
William Robison
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Dang, Bum!

Just because I invaded your Sepulveda Basin thread, do you really think that gives you the right to come over here and invade this one?

Haw back at you.

Bill.

PS: I notice you've been careful to keep all pictures of YOU off the net. Haw again. wr.
Old 02-09-2006, 06:31 AM
  #1549  
crazy4planes2000
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Thanks Bill for letting an old Limey join and in reply to "bldrums" question, I fly mode one so the answer is yes.

Garry (crazy4planes2000)
Old 02-09-2006, 10:35 AM
  #1550  
nibs
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Welcome #194! I'm # 190 - beat you by 4! Also a Brit - living in Dallas TX! Yikes - what's this place coming to!
Better get some more of them Saitos!

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