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RE: SYSSA 30CC GAS MADE IN USA
Anyone know is Todd has modified the muffler on the new production engines? Problem may be solved if he has changed something.
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RE: SYSSA 30CC GAS MADE IN USA
Guess I am one of the lucky ones. Original muffler, not loose, has never been taken off.
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RE: SYSSA 30CC GAS MADE IN USA
It sure has been quiet on the forums lately. Is anyone flying?
I got in a few flights early this morning before it got to hot and windy. Nothing came loose, broke, fell off or wore out, so it was a good day. |
RE: SYSSA 30CC GAS MADE IN USA
Same here. When all is going well, it is hard to take the time to post comments. I do read those that do post, but have been flying. Everything working great. Now the wind is coming up, so am grounded for the rest of the day.
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RE: SYSSA 30CC GAS MADE IN USA
Joystick is that muffler still tight? I'm thinking about doing the mod. I took my Slick to our vacation place in Delaware and forgot my charger. I came home thinking I'll be going back soon, so I left the plane there. What a mistake. I couldn't test my last change. Hope to get there soon and fly it. If it comes loose, your change will be made.
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RE: SYSSA 30CC GAS MADE IN USA
ORIGINAL: mmlong Joystick is that muffler still tight? I'm thinking about doing the mod. I took my Slick to our vacation place in Delaware and forgot my charger. I came home thinking I'll be going back soon, so I left the plane there. What a mistake. I couldn't test my last change. Hope to get there soon and fly it. If it comes loose, your change will be made. |
RE: SYSSA 30CC GAS MADE IN USA
Hi Again!
Good news - have another SAP 180. Slight bad news - new out of the box it wouldnt pump gas with hand flipping and/or rocking as per instructions (choke closed, throttle in various positions). After exhausting my shoulder joint - Hit it with the electric starter - starts straight away (no choke, low throttle). After that - one flip hand starts (4 flights - runs fine). Next day - same deal. I didnt drain the tank. Just tried it again now - same deal. I had to bend the lug on the choke plate a little to get the linkages set up but the plate itself seems flat against the carb when the choke is in the the closed position. My friend google says that some times walbro carbs are hard to prime/wet and there may be some fiddling with membranes/needles required even straight out of the box. Advice? Is it the choke plate somehow? Is it the carb? Is it something else? I dont want to go fiddling with the carb from new - they look complicated! Thank you Beej |
RE: SYSSA 30CC GAS MADE IN USA
One of the check valve flaps in the carb pump is curled. when it gets wet with gasoline it seats perfectly.
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RE: SYSSA 30CC GAS MADE IN USA
Thanks w8ye,
Is this a permanent condition that will only be fixed by a new part, or will it eventually seat as the engine is run in? cheers, Beej ORIGINAL: w8ye One of the check valve flaps in the carb pump is curled. when it gets wet with gasoline it seats perfectly. |
RE: SYSSA 30CC GAS MADE IN USA
I would consider putting a new pump diaphragm in the carburetor. It uses the WAT style kit.
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RE: SYSSA 30CC GAS MADE IN USA
ORIGINAL: Beej Hi Again! Good news - have another SAP 180. Slight bad news - new out of the box it wouldnt pump gas with hand flipping and/or rocking as per instructions (choke closed, throttle in various positions). After exhausting my shoulder joint - Hit it with the electric starter - starts straight away (no choke, low throttle). After that - one flip hand starts (4 flights - runs fine). Next day - same deal. I didnt drain the tank. Just tried it again now - same deal. Your fuel lines are draining or filling with air when the plane is not in use, and flipping or rocking can take a LOOONG time to pull up fuel if at all ( dependant upon your plumbing... ) However once fuel hits the carb and the pump is primed, rocking is sufficent to pull more fuel in. Your engine starts "right away" once run and you didn't state having any running problems or in flight problems. If you can maintain vertical flight, it's doubtful there's anything wrong with the pump... it IS pumping fuel. Don't fix what may not be broken. |
RE: SYSSA 30CC GAS MADE IN USA
Just in case you need or want to replace the carb parts, a good source for the carb repair kit is your local lawn mower repair shop. They can also help you pick the right diaphram for the fuel you are using; sometimes there are a bunch in the kit, black, blue and white, and it is easy to get confused.
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RE: SYSSA 30CC GAS MADE IN USA
ORIGINAL: opjose ORIGINAL: Beej Hi Again! Good news - have another SAP 180. Slight bad news - new out of the box it wouldnt pump gas with hand flipping and/or rocking as per instructions (choke closed, throttle in various positions). After exhausting my shoulder joint - Hit it with the electric starter - starts straight away (no choke, low throttle). After that - one flip hand starts (4 flights - runs fine). Next day - same deal. I didnt drain the tank. Just tried it again now - same deal. Hi - whilst it is true that the engine is very solid on uplines (only had around 12 flights so far and havent fiddled with the needles yet), nonetheless it will not pump prime - even if I flip/rock it it 100s (literally) of times. Cant get a "bump" out of it at all. I can see the fuel in the line and it hasn't drained away from the carb in between days. Since it fires straight away with the electric starter I am also wondering about the possibility my choke plate isn't really sitting flat (as well as the possibility suggested by w8ye). On the other hand, maybe Ill just resign myself to taking my starter with me to the field each time.... it's really only a nuisance value problem since it "shouldnt" really be this way.... The point, after all, is to fly! Thanks for all of the constructive comment. Beej Your fuel lines are draining or filling with air when the plane is not in use, and flipping or rocking can take a LOOONG time to pull up fuel if at all ( dependant upon your plumbing... ) However once fuel hits the carb and the pump is primed, rocking is sufficent to pull more fuel in. Your engine starts ''right away'' once run and you didn't state having any running problems or in flight problems. If you can maintain vertical flight, it's doubtful there's anything wrong with the pump... it IS pumping fuel. Don't fix what may not be broken. |
RE: SYSSA 30CC GAS MADE IN USA
ORIGINAL: Joystick TX It sure has been quiet on the forums lately. Is anyone flying? I got in a few flights early this morning before it got to hot and windy. Nothing came loose, broke, fell off or wore out, so it was a good day. Another few more flights in today with the modified muffler, still tight. Hopefully it stays that way. Rob |
RE: SYSSA 30CC GAS MADE IN USA
Rob,
When did you mod your muffler and how many flights total? Roughly? Thanks! Andy |
RE: SYSSA 30CC GAS MADE IN USA
Just over a week ago, and have two tank s through it. (4-5 flights) I had some other issues to work out on the plane so didn't fly as much as I could have. The muffler was loose prior to mod and would usually loosen up after 4-5 flights. It's still tight now. If it stays tight, I'll mod the other two.
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RE: SYSSA 30CC GAS MADE IN USA
ITS SO NICE TO SEE SOMETHING MADE IN AMERICA HOPE YOU WILL MAKE AROUND LIKE A 15CC ILL GET ONE>>>>> GO AMERICAN EVERYONE
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RE: SYSSA 30CC GAS MADE IN USA
any one know what this motor's cylinder head temp should be? 250F 300F ???
I am turning a 18-6 prop 2400 rpm, should I see a big rpm drop when I go to a 18-10 I had a typo here the rpm is 8400 |
RE: SYSSA 30CC GAS MADE IN USA
ORIGINAL: hobby_man any one know what this motor's cylinder head temp should be? 250F 300F ??? I am turning a 18-6 prop 2400 rpm, should I see a big rpm drop when I go to a 18-10 With an 18-6 wood prop I'm turning 7800+ RPM or more on a new engine. I expect it to do better after it is broken in and I drop the oil percentage a bit. I would expect you to see a QUITE substantial drop in RPM's with the 18x10 prop. If I throw the numbers into ThrustHP I'm getting ( remember this is static testing, so you get better results in the air ). 18x6 @ 7800 RPM = 2.135 HP Projected airspeed 44 MPH Using the HP figure and shooting for similiar numbers I get.... 18x10 @ 6600 RPM = 2.156 HP Projected airspeed 62 MPH - Projected. Your results might be better ( I am getting RPM's above 7800 after all ) but given the above you'll see a big RPM drop. |
RE: SYSSA 30CC GAS MADE IN USA
thanks, I will post my rpm when I find out
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RE: SYSSA 30CC GAS MADE IN USA
My understanding is the temperature should be between 180 and 230. Under 180 and you may get carbon build up. Over 230 and heat damage may occur. But Todd may want to chime in.
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RE: SYSSA 30CC GAS MADE IN USA
ORIGINAL: hobby_man thanks, I will post my rpm when I find out |
RE: SYSSA 30CC GAS MADE IN USA
ORIGINAL: Slow and Steady My understanding is the temperature should be between 180 and 230. Under 180 and you may get carbon build up. Over 230 and heat damage may occur. But Todd may want to chime in. I am seeing 240F per the telemetry unit on my DX8 |
RE: SYSSA 30CC GAS MADE IN USA
ORIGINAL: hobby_man I am seeing 240F per the telemetry unit on my DX8 At the base of the spark plug? |
RE: SYSSA 30CC GAS MADE IN USA
ORIGINAL: opjose ORIGINAL: hobby_man I am seeing 240F per the telemetry unit on my DX8 At the base of the spark plug? the thermal wire is wrapped around the c/l of the head, about 1.5 inches below the spark plug, contacted against the jug itself, not the fins. I wish they made a unit in a spark plug washer, like the units on the 70's era snowmobile head temp gages |
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