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11-09-2019, 03:30 PM
11-09-2019, 03:38 PM
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regulators,
that Magnum 180 4st I had was highly sensitive to fuel levels, every thing in my mind told me a regulator would fix the problem, I never found out if I was correct in thinking that. I was thinking the engine would have to run fatter to pull the fuel with a regulator, therefore at lower fuel levels the engine would not go as lean,,, again, I never found out.
I had a couple guys that had been in the hobby years and years longer than me tell me a regulator will not help without a pump or very good tank pressure, today that makes good sense to me.
I do know the YS and OS Heli engines that come with regulators pressurize their fuel tanks from the back plate and use a one-way valve. to add, I now can say that I do remember the sound I heard when my friend would release the pressure from his Helii's fuel tank (the engine was the YS 80), the tank was very well pressurized.
edited, the OS 4st's that come with a regulator also come with a pump,,, the plastic pump don't cost much, only an arm and a leg, $80.
https://www.towerhobbies.com/cgi-bin/wti0001p?I=LXUTN4&P=7
Jim
that Magnum 180 4st I had was highly sensitive to fuel levels, every thing in my mind told me a regulator would fix the problem, I never found out if I was correct in thinking that. I was thinking the engine would have to run fatter to pull the fuel with a regulator, therefore at lower fuel levels the engine would not go as lean,,, again, I never found out.
I had a couple guys that had been in the hobby years and years longer than me tell me a regulator will not help without a pump or very good tank pressure, today that makes good sense to me.
I do know the YS and OS Heli engines that come with regulators pressurize their fuel tanks from the back plate and use a one-way valve. to add, I now can say that I do remember the sound I heard when my friend would release the pressure from his Helii's fuel tank (the engine was the YS 80), the tank was very well pressurized.
edited, the OS 4st's that come with a regulator also come with a pump,,, the plastic pump don't cost much, only an arm and a leg, $80.
https://www.towerhobbies.com/cgi-bin/wti0001p?I=LXUTN4&P=7
Jim
Last edited by Hobbsy; 11-09-2019 at 03:41 PM.
11-09-2019, 06:48 PM
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Jim, I wondered that very thing concerning the Iron Bay regulator, it uses a Schrader valve for the output. John at Iron Bay said, it only takes a breath, he was right. Even the little 30 with it's air bleed carb can operate either the Cline or the Iron Bay. Some claim that an air bleed carb can't work with a regulator, somebody forgot to tell the carb. Think about it this way Jim, without pressure there's nothing to regulate.
I have a Perry pump, traded some hobby stuff for it. the guy said it only had like 6 flights on it, and it looks like it too. he said it came with an OS 90 heli engine.
I plan to use the pump and my regulator on my 115 in the VQ P-40.
Jim
11-10-2019, 03:31 AM
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ICBIMProducts.com - Saito FA-120, FA-150, FA-180 (Series 'A')-505054
http://icbimproducts.com/gaskets/new...php?groupid=80
She ships quickly.
Last edited by Hobbsy; 11-10-2019 at 03:40 AM. Reason: Add content
11-10-2019, 03:57 AM
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VP 40 for gas
I dug it up, Thanks
Last edited by Hobbsy; 11-10-2019 at 04:03 AM. Reason: Add picture
11-10-2019, 04:11 AM
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Good review here: Saito FA-80
11-10-2019, 04:24 AM
11-10-2019, 05:44 AM
11-10-2019, 05:46 AM
11-10-2019, 06:34 AM
Received my bearings the other day. They came in with metal shields. Can I take this off? I feel that the rear bearing should be open and the inside of the front bearing should be open.
11-10-2019, 07:24 AM
Thanks for the link and replies to my gasket question.
I dropped out of the hobby for about six years and it amazes me how many suppliers, manufacturers, products, etc. have disappeared in that period of time. It's getting to be almost impossible to find 4-stroke nitro fuel locally. I still have almost all of my R/C equipment, including Saitos, but replacement parts are non-existent. I guess we're all becoming dinosaurs.
I dropped out of the hobby for about six years and it amazes me how many suppliers, manufacturers, products, etc. have disappeared in that period of time. It's getting to be almost impossible to find 4-stroke nitro fuel locally. I still have almost all of my R/C equipment, including Saitos, but replacement parts are non-existent. I guess we're all becoming dinosaurs.
11-10-2019, 09:12 AM
Yep, just peel them out.
Metal shields don't seal out oil though. There is plenty of clearance for oil to move thru the bearings.
11-10-2019, 09:21 AM
11-10-2019, 09:30 AM
Thanks for the link and replies to my gasket question.
I dropped out of the hobby for about six years and it amazes me how many suppliers, manufacturers, products, etc. have disappeared in that period of time. It's getting to be almost impossible to find 4-stroke nitro fuel locally. I still have almost all of my R/C equipment, including Saitos, but replacement parts are non-existent. I guess we're all becoming dinosaurs.
I dropped out of the hobby for about six years and it amazes me how many suppliers, manufacturers, products, etc. have disappeared in that period of time. It's getting to be almost impossible to find 4-stroke nitro fuel locally. I still have almost all of my R/C equipment, including Saitos, but replacement parts are non-existent. I guess we're all becoming dinosaurs.
yes it has been a disappointing last few years. There has been a few times I have gone to buy something and that suppler has closed shop.
the other thing that is a little disappointing is the switch to electric. Not sure why this is happening but it can’t be because of noise. I believe some have just gone to get away from the oil. That seems to be the biggest thing in the hobby that has been a constant lots of pilots don’t like the oily mess.
i say long live glow, I personally love the sound smell and oil.
11-10-2019, 09:44 AM
Yes I agree, there is something about an I.C. engine cranking up the revs that I like. And, the 4-stroke sound makes it even better. As far as electrics are concerned, I think if you look around at the flying fields, aircraft model types are overwhelmingly ARF's. At least that is what I see at our field. Instant gratification and they avoid (ugh!) the mess of glue. Building and repairing, for me, is more than 50% of the fun. But then, I've been at it (minus some breaks) for over 60 years.
11-10-2019, 09:55 AM
That said, I always remove seals/shields from rear bearings.
Last edited by Glowgeek; 11-10-2019 at 09:59 AM.
11-10-2019, 10:27 AM
Yes I agree, there is something about an I.C. engine cranking up the revs that I like. And, the 4-stroke sound makes it even better. As far as electrics are concerned, I think if you look around at the flying fields, aircraft model types are overwhelmingly ARF's. At least that is what I see at our field. Instant gratification and they avoid (ugh!) the mess of glue. Building and repairing, for me, is more than 50% of the fun. But then, I've been at it (minus some breaks) for over 60 years.
vary few people actually build and boy if you’re on a forum that says balsa building. The ARF guys get kinda of upset when there not included in that. I say fly what you want but don’t get upset when a group doesn’t acknowledge what you’re doing.
11-10-2019, 10:58 AM
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It seems sealed bearings don't keep oil out either. Two engines I tore down after 1hr of run time to replace SS bearings with hard chrome ones had no grease left in the sealed front bearings. For that matter I haven't seen any grease in any bearings I've taken out of an rc engine. Sealed bearings are supposed to be greased for the life of the bearing but I'm not so sure that applies to our application. Maybe it's the heat combined with the constant pulsing of crankcase pressure that works the grease out of sealed bearings?
That said, I always remove seals/shields from rear bearings.
That said, I always remove seals/shields from rear bearings.
11-10-2019, 11:04 AM
Amen Crunchy, people fly what they want and should keep negative comments to themselves. It kills the fun. Arf, Arc, Kit , Scratch, build or buy there's a purpose to them all. I fly some of each and I can say for certain that I have no interest in scratch building the kind of 3D planes that are available as arfs today ie laser cut plywood/carbon fiber composites.
66° and light S/SW winds today...... It's off to the field for me.
66° and light S/SW winds today...... It's off to the field for me.