Welcome to Club SAITO !
10-05-2016, 11:09 AM
10-05-2016, 12:16 PM
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I have a Saito 100 that I got used. It looks to be in very good condition with a clean piston. I started the engine a few weeks ago but it ran poorly and only on a rich setting. I checked the LS setting and it was about 6 turns in from flush with the outside of the arm. The valve clearances were very wide open (I did not measure this). I started leaning out the LS and HS and about ¾ through an 8oz tank it backfired and stopped. I reset the LS, HS needles and valve clearances to factory settings. Now it only backfires and this is with using an electric starter. Could the timing be off?
10-05-2016, 01:00 PM
10-06-2016, 03:31 AM
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There is a physical size difference, I'll take a picture in a while, here they are on opposite ends of a 12mm pipe and a second shot with the 1.25 muffler in the middle.
Part # SAI6574D says 65 to 82
Part # SAI91S74B for the 100 but is discontinued.
Part # SAI6574D says 65 to 82
Part # SAI91S74B for the 100 but is discontinued.
Last edited by Hobbsy; 10-06-2016 at 04:37 AM.
10-06-2016, 04:43 AM
Well everyone i add a saito 30 to my collection and have it in a converted to rc plane called the sure fun. Its a float plane hope to fly it this weekend. But not sure of what the best prop would be for best flight performance. Could you givr me an idea. Thanks Captcrunch
ps richard could you hook one of those triple cylinder saito steam engines up to a home made expresso machine i have next to the bar fridge ?
Last edited by Rudolph Hart; 10-06-2016 at 04:51 AM.
10-06-2016, 04:53 AM
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Back the LS needle out one turn, peak HS needle and leave it peaked, then set the LS needle 1/8th turn at a time, check acceleration and idle after every other change. When it hesitates on opening the throttle, go ccw 1/8th turn on LS needle then set the HS for your favorite full throttle setting.
10-06-2016, 05:57 AM
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Back the LS needle out one turn, peak HS needle and leave it peaked, then set the LS needle 1/8th turn at a time, check acceleration and idle after every other change. When it hesitates on opening the throttle, go ccw 1/8th turn on LS needle then set the HS for your favorite full throttle setting.
10-06-2016, 07:28 AM
You could also convert the boiler to a still?
10-06-2016, 07:32 AM
Vbr, Richard
10-06-2016, 07:51 AM
I have doubts about that, my maternal grandfather was known to be Noble county's expert on still locations and mash recipes, I understand a number of distillery owners may have been distant cousins. My father on the other hand was a boiler expert and I learned a few things from him too. Anyway on the subject of conversion I would suspect due to its size the mash could inadvertently clog some of the boiler tubing causing an unwanted build up of pressure inside the boiler, never a good thing! Then you still need sufficient quantities to age the beverage unless you are particularly fond of "Rot Gut" Whiskey. Just my 2 cents, someone want to pass a bottle?
10-06-2016, 10:17 AM
Wow, you just discovered a whole new direction to send this thread in, Moonshine and boilers.
SMK I found setting the LSN where the top is even with the bevel of the throttle arm works as a good starting point.
Did you guys know the #1 cause of deaths in steam age train wrecks was not from the crash itself, but from the explosion of the boiler. The number #1 cause of river boat losses was also due to the boilers.
In both cases the cause of boiler explosions was due to the water leaving the hot spot above the burners, which superheats. In tha case of train wrecks, the water never returns to cool down that hot plate, which eventually melts and causes the superheated water to expand rapidly and BOOM boiler explodes. In Riverboats sometimes they would run hard, boilers were not well maintained and water levels would drop in one boiler since most were tied together, and water from one boiler would get into the other one when the boat heeled over in a turn or some other reason, superheat the burner plates, then when the boat went back on even keel the water would reenter the boiler and flash to superheated steam and BOOM boiler explodes setting the boat on fire.
It is interesting that water boils faster in low pressure, but high pressure it superheats. Remove that pressure and it rapidly expands. BOOM. In space water would instantly biol and freeze at the same time.
SMK I found setting the LSN where the top is even with the bevel of the throttle arm works as a good starting point.
Did you guys know the #1 cause of deaths in steam age train wrecks was not from the crash itself, but from the explosion of the boiler. The number #1 cause of river boat losses was also due to the boilers.
In both cases the cause of boiler explosions was due to the water leaving the hot spot above the burners, which superheats. In tha case of train wrecks, the water never returns to cool down that hot plate, which eventually melts and causes the superheated water to expand rapidly and BOOM boiler explodes. In Riverboats sometimes they would run hard, boilers were not well maintained and water levels would drop in one boiler since most were tied together, and water from one boiler would get into the other one when the boat heeled over in a turn or some other reason, superheat the burner plates, then when the boat went back on even keel the water would reenter the boiler and flash to superheated steam and BOOM boiler explodes setting the boat on fire.
It is interesting that water boils faster in low pressure, but high pressure it superheats. Remove that pressure and it rapidly expands. BOOM. In space water would instantly biol and freeze at the same time.
10-07-2016, 05:04 AM
Keep the low speed sleeve fat like dave says and tune for top end first.If that does'nt work pull the main needle and change the small o ring,do the carby o rings too where it meets the head especially and make sure the small washer is still there.
ps since we are talking about our favourite old boilers i thought i'd just repeat a joke about this old bird who dropped ten shooters straight in ten minutes...but then again maybe not
ps since we are talking about our favourite old boilers i thought i'd just repeat a joke about this old bird who dropped ten shooters straight in ten minutes...but then again maybe not
10-07-2016, 05:21 AM
Any idea why the TH is not recommended for YS engines? (But, i won't admit i have a 120 on Gary's H9 Cub, knowing how you love them so much)
Vbr, Richard
PS: Is it corn or soybeans at the FARCC field this year? I have lost planes in both
10-07-2016, 12:31 PM
Too rich causes backfires too. Most backfires occur when fuel accumulates in the exhaust system, and when the exhaust valve opens, the hot cylinder gasses ignite the fuel in the exhaust pipe, and thats the bang you hear, and in these engines, its the reverse explosion into the cylinder from the exhaust valve that stops the engine cold and spins the prop nut off.
Too lean backfires occur at the intake side, where flames leap out the carb.
Too lean backfires occur at the intake side, where flames leap out the carb.
10-07-2016, 12:47 PM
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Too rich causes backfires too. Most backfires occur when fuel accumulates in the exhaust system, and when the exhaust valve opens, the hot cylinder gasses ignite the fuel in the exhaust pipe, and thats the bang you hear, and in these engines, its the reverse explosion into the cylinder from the exhaust valve that stops the engine cold and spins the prop nut off.
Too lean backfires occur at the intake side, where flames leap out the carb.
Too lean backfires occur at the intake side, where flames leap out the carb.
CR
10-07-2016, 03:18 PM
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Too rich causes backfires too. Most backfires occur when fuel accumulates in the exhaust system, and when the exhaust valve opens, the hot cylinder gasses ignite the fuel in the exhaust pipe, and thats the bang you hear, and in these engines, its the reverse explosion into the cylinder from the exhaust valve that stops the engine cold and spins the prop nut off.
Too lean backfires occur at the intake side, where flames leap out the carb.
Too lean backfires occur at the intake side, where flames leap out the carb.
