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Welcome to Club SAITO !

Old 06-07-2010, 06:33 AM
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Evidently I have the MK II. Thanks for all the details. Always nice to here from some body that can really help.
Mike
Old 06-07-2010, 08:51 AM
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The 45 MKII is the only 45 I've seen. They were rather common in the USA/Canada. Horizon never carried the 45S. The 45 MKI & MKII were sold by Indy RC before Horizon bought them.

The main differences beside bore and stroke with current available parts is that the back plate and carb body are designed different. The other difference is the camshaft/cam cover, pushrods & tubes.
Old 06-07-2010, 05:06 PM
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ORIGINAL: w8ye

The 45 MKII is the only 45 I've seen. They were rather common in the USA/Canada. Horizon never carried the 45S. The 45 MKI & MKII were sold by Indy RC before Horizon bought them.

The main differences beside bore and stroke with current available parts is that the back plate and carb body are designed different. The other difference is the camshaft/cam cover, pushrods & tubes.
Yes, I have both engines and can confirm the numerous differences. Even the cranks are slightly different (larger threaded section on the 45S - from memory). The back cover, carb, intake tube, pushrods/tubes/seals, camshaft/cam cover, and crank are all different. I mistakenly tried to assemble one engine from both engines, quickly finding out that some things wouldn't fit (pushrods mostly).

Whilst both have different gasket sets, only the intake tube and pushrod area really differed (at least enough that I could tell).

I'm about to pull the 45S and swap it for the 45MkII. I may take some side by side pics to post here.
Old 06-07-2010, 06:44 PM
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Please post some pictures for the record
Old 06-08-2010, 04:40 AM
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ORIGINAL: w8ye

Please post some pictures for the record
I will do that soon as I need to swap the engines in my Eindecker. So while they are both out I can take the pics.
Old 06-08-2010, 11:15 AM
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These pictures are of Hobbsy's engines These pictures are all from this thread.

45MKII on left and 40 on the right
[img]{akamaiimageforum}/Upfiles/22623/Wu60376.jpg[/img]

[img]{akamaiimageforum}/Upfiles/22623/Om31956.jpg[/img]

[img]{akamaiimageforum}/Upfiles/22623/Zu66347.jpg[/img]

45MKII Graupner 12 X 5 @9500
[img]{akamaiimageforum}/upfiles/22623/In26912.jpg[/img]

Last production 45S from Europe 2006 As you can see it looks much like the current Saito 56
[img]{akamaiimageforum}/upfiles/290563/Jh27039.jpg[/img]

Old 06-09-2010, 10:22 AM
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ORIGINAL: N1EDM

Winglift, I might be out of line here but you said that the top of your tank is now level with the carb. I was always under the impression that the centerline should be even with the carb (i.e., spraybar) or 1/4'' below.

Can someone set me straight on that? Is it different for 4S engines than it is for 2S?

Or is the tank now set that low to prevent siphoning?

Bob
Bob, According to a recent article in FlyRC (Aug 2010) on the Saito engines FA-72 and FA-82 he said that "you should not mount the fuel tank above the fuel inlet on the carburetor." and I went ahead and did that for this engine since I have been having problems in that area. I called Horizon about my particular problem and they did tell me that the routing of the fuel lines will not make any difference unless they are extremely long. They recommended that I send the engine in for analysis. As far as 4S or 2S, I would think it would be the same, ie both the 2S & 4S carb demands fuel the same.
Old 06-09-2010, 10:28 AM
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Does anyone have a method of indexing the cam and crankshaft on the Saito 100 when reassembling? Photos? I can set the dot at 6 oclock on the cam, but not sure if it stays there when lowering it into the case. The same for the crankshaft which needs to be at 12 oclock, not sure if it stays in position when assembling the cam.
Old 06-09-2010, 10:53 AM
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Look back in the thread, there is a hole in the cam that you can put a drill with a bit of plastic pushrod around it in one of the follower holes and that will hold it in time as you put it in the engine. Still need the crank at TDC.

L.
Old 06-09-2010, 01:22 PM
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My dad just informed me that our Golden Saito has arrived in the mail today[8D]. I am trying to get him to send me some pictures of it.
Old 06-09-2010, 01:24 PM
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ORIGINAL: winglift

Does anyone have a method of indexing the cam and crankshaft on the Saito 100 when reassembling? Photos? I can set the dot at 6 oclock on the cam, but not sure if it stays there when lowering it into the case. The same for the crankshaft which needs to be at 12 oclock, not sure if it stays in position when assembling the cam.
You can just use the small end of a pushrod

Old 06-09-2010, 01:26 PM
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ORIGINAL: Cherokee Flyer

Look back in the thread, there is a hole in the cam that you can put a drill with a bit of plastic pushrod around it in one of the follower holes and that will hold it in time as you put it in the engine. Still need the crank at TDC.

L.
Thanks for that, I will search for it.
Old 06-09-2010, 02:40 PM
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well here it is. One picture is all I have so far.
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Old 06-09-2010, 03:11 PM
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ORIGINAL: davidgeorge212

well here it is. One picture is all I have so far.
BLING...!!!
Old 06-09-2010, 05:15 PM
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sho is shiney
Old 06-09-2010, 07:51 PM
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The hole in the cam is 2mm and the lifter bore is 4mm
Old 06-09-2010, 08:09 PM
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well here it is. One picture is all I have so far.
BLING...!!!

No Kidding!!

I would have to hang that from my neck on a thick gold chain and wear it to the field on sunday. I would be the Flavor Flav of the flying club [8D].
Old 06-10-2010, 08:24 AM
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ORIGINAL: w8ye


ORIGINAL: winglift

Does anyone have a method of indexing the cam and crankshaft on the Saito 100 when reassembling? Photos? I can set the dot at 6 oclock on the cam, but not sure if it stays there when lowering it into the case. The same for the crankshaft which needs to be at 12 oclock, not sure if it stays in position when assembling the cam.
You can just use the small end of a pushrod

Thanks. I should have thought of that. Do you just eyeball the crank?
Old 06-10-2010, 08:58 AM
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It is easy if you take out the glowplug and use a toothpick to find TDC.
Old 06-10-2010, 01:36 PM
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Hi Bill, I would like to get a copy of the material you mentioned here. I just picked up a 100 FA, sold for parts as it was crashed, that looks complete and fixable. The pushrods are bent and the high speed needle bent as well.
I also have a 120 in a Tiger Moth that will need the bearings replaced. The two 45s are still OK. So any information that you could provide on the correct process to pull the crank and assembly would be greatly appreaciated. Thanks in advance. Gerry [email protected]
Old 06-10-2010, 02:29 PM
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ORIGINAL: davidgeorge212

well here it is. One picture is all I have so far.
BLING...!!!

No Kidding!!

I would have to hang that from my neck on a thick gold chain and wear it to the field on sunday. I would be the Flavor Flav of the flying club [8D].
haha
Old 06-11-2010, 10:23 AM
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ORIGINAL: winglift

Does anyone have a method of indexing the cam and crankshaft on the Saito 100 when reassembling? Photos? I can set the dot at 6 oclock on the cam, but not sure if it stays there when lowering it into the case. The same for the crankshaft which needs to be at 12 oclock, not sure if it stays in position when assembling the cam.
You can just use the small end of a pushrod

Unfortunately that did not work as the cam followers prevented that. Without a sure way to lock it in place, I just rotated it to 6 oclock and gently lowered it and hope for the best.
Old 06-11-2010, 10:32 AM
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Others have posted that an exacto blade or a piece of plastic (credit card) could be used to hold the cam gear in position as the cam cover is lowered onto the crankcase. I can see that a credit card with a U channel that bridges opposite cam gear teeth would hold them and then be pulled out after mesh is made.
Old 06-12-2010, 10:08 AM
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Ok I know this might be a silly question, I currently am running a OS 55ax 2 stroke in a gp Cap 580, I am awaiting a 5 year old saito 80 gk that I picked up used, Is this engine more powerfull than my 55? On the websites the 55 is rated at 1.7hp @ 16000, The saito is rated @ 1.3? Would someone mind explaining?
Old 06-12-2010, 10:55 AM
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Never mind....I researched it and figured it out

Dave

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