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If you plan on usig that engine much, I would consider a new cam and lifters.
Another thing about a high time engine is that you should look under the tips of the rocker arms on the valve end. You will find little sockets worn into the rocker arm which will make it impossible to get a good valve lash setting with a feeler gauge. If you are observant, you can reface these old rocker arm tips on a nice grinding wheel by hand.
Inspect the tips of the push rods for pitting.
Compare the valve adjuster screws. One that is down too close to the jam nut means there is something short? Push rod, lifter, racker arm tip, valve stem?
The valve tips get peened over also. When this happens, you cannot get the spring retainer washer up off the valve nor get the valve out of the head. You have to take a small hone stone and dress the flange off the valve stem to get them apart.
Another thing about a high time engine is that you should look under the tips of the rocker arms on the valve end. You will find little sockets worn into the rocker arm which will make it impossible to get a good valve lash setting with a feeler gauge. If you are observant, you can reface these old rocker arm tips on a nice grinding wheel by hand.
Inspect the tips of the push rods for pitting.
Compare the valve adjuster screws. One that is down too close to the jam nut means there is something short? Push rod, lifter, racker arm tip, valve stem?
The valve tips get peened over also. When this happens, you cannot get the spring retainer washer up off the valve nor get the valve out of the head. You have to take a small hone stone and dress the flange off the valve stem to get them apart.
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ORIGINAL: octanehuffer
.... According to the ''Everything Saito'' thread, it is stated that there must never be a sealed bearing in the rear. ...
.... According to the ''Everything Saito'' thread, it is stated that there must never be a sealed bearing in the rear. ...
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Join Date: Dec 2001
Location: Colonial Beach, VA
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If you rounded it off it is this 24x12x6 at BOCA, there are variations in style, just choose.
http://www.bocabearings.com/bearing-...6901ZZ-12x24x6
http://www.bocabearings.com/bearing-...6901ZZ-12x24x6
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My Feedback: (16)
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Those dimensions are for a 6901 bearing
RC bearings has it in Stainless Steel but not ceramic $6.49
http://www.rc-bearings.com/catalog/p...roducts_id=673
The front bearing is a 608-2RS and RC bearings has it in ceramic $9.69
http://www.rc-bearings.com/catalog/p...roducts_id=552
RC bearings has it in Stainless Steel but not ceramic $6.49
http://www.rc-bearings.com/catalog/p...roducts_id=673
The front bearing is a 608-2RS and RC bearings has it in ceramic $9.69
http://www.rc-bearings.com/catalog/p...roducts_id=552
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ORIGINAL: Kostas1
Hi.
Can i see a real life picture of the camshaft housing of an opposed cylinder Saito;
Either of the 100, 130, 270 or 300;
Hi.
Can i see a real life picture of the camshaft housing of an opposed cylinder Saito;
Either of the 100, 130, 270 or 300;
Here are some of an FA-130T:
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While I haven't actually used them yet Wolf Models have some you beaut "flick" type switches that I will be using with my FG Saitos. The O/T (Vintagents guys) are using them (well some are) with great success.
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ORIGINAL: FNQFLYER
While I haven't actually used them yet Wolf Models have some you beaut ''flick'' type switches that I will be using with my FG Saitos. The O/T (Vintagents guys) are using them (well some are) with great success.
While I haven't actually used them yet Wolf Models have some you beaut ''flick'' type switches that I will be using with my FG Saitos. The O/T (Vintagents guys) are using them (well some are) with great success.
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ORIGINAL: frets24
I can scan the parts breakdown/exploded view later today. Unless someone beats me to it.
I can scan the parts breakdown/exploded view later today. Unless someone beats me to it.
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Kostas,
Here are the manual breakdown scans. If the basis of your inquery is because you are wondering how the air pump works; it is basically like a bicycle pump where the cam drives the pump piston one way and a return spring drives it the other way.
Cheers!
Here are the manual breakdown scans. If the basis of your inquery is because you are wondering how the air pump works; it is basically like a bicycle pump where the cam drives the pump piston one way and a return spring drives it the other way.
Cheers!
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My Feedback: (16)
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Here's the Saito four stroke opposed twin manual
There three different basic designs
http://www.horizonhobby.com/ProdInfo...oke_Manual.pdf
There three different basic designs
http://www.horizonhobby.com/ProdInfo...oke_Manual.pdf
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Thank you so much....
Let me ask,
someone has posted how you calculate the mass of the connecting rod, piston pin etc
so that these will eventually balance the mass of the crankshaft.
How can i find it again?
Let me ask,
someone has posted how you calculate the mass of the connecting rod, piston pin etc
so that these will eventually balance the mass of the crankshaft.
How can i find it again?
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You mount the connecting rod on two scales or at least with the beam center line level. Get the weight of each end of the rod.
Then obtain the full weight of the piston, ring, wristpin, circlips.
In calculating your needed counterbalance weight, use half the weight of the big end of the rod, and all the weight of the little end of the rod, the piston, ring, wrist pin, and circlips.
Then obtain the full weight of the piston, ring, wristpin, circlips.
In calculating your needed counterbalance weight, use half the weight of the big end of the rod, and all the weight of the little end of the rod, the piston, ring, wrist pin, and circlips.
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ORIGINAL: Kostas1
Thank you so much....
Let me ask,
someone has posted how you calculate the mass of the connecting rod, piston pin etc
so that these will eventually balance the mass of the crankshaft.
How can i find it again?
Thank you so much....
Let me ask,
someone has posted how you calculate the mass of the connecting rod, piston pin etc
so that these will eventually balance the mass of the crankshaft.
How can i find it again?
The less vibration period is best placed where the engine does its most work, outside of that above and below expect excessive vibration,it is a narrow rpm where an engine will seem sweet with regard to vibration.
w8ye has given you good advice as to where to start.
Me thinks a lot of experiment to follow to get where one is happy
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Regarding the balancing of a single, wouldn't Saito already balance the engine for general purpose use? So this discussion of balancing relates to balancing at max rpm for speed applications?
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My Feedback: (26)
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I'm installing a Saito 1.8FS inverted into a ESM Hawker Hurricane. The fuel tank location in this configuration is above the fuel inlet on the carburator. The engine is equipped with an OEM fuel pump assembly. What problems can I exspect in this configuration? I'm running two other Saito engines side mounted with the fuel tanks below the fuel inlet and have no problems with this set-up.
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The Saito factory fuel pressurization adapter is generally hard to adjust. If you do get it running correctly, the second you change a parameter like taking off into the air, the thing is out of adjustment again.
This system is easier to use . . .
http://www3.towerhobbies.com/cgi-bin...XDG61&P=ML
This system is easier to use . . .
http://www3.towerhobbies.com/cgi-bin...XDG61&P=ML
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My Feedback: (26)
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Are you speaking from experience or have you been a whitness to this happening? The biggest problem with this system is getting the pressure adjustment correct. I should have asked is fuel siphoning is a problem due to the relationship of tank height above the carburetor.