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RE: BME 50 owners advice needed
ORIGINAL: Pat Roy Prop is good. 17 to 18 was about average for the version 1 Edge, so you did well. No worries, they flew great at 20 lbs!! The first one I did I threw everything into it and added wood everywhere, wrongly thinking it needed more strength. It just ended up heavier, not stronger:( The next two got much better:) The new ones (v-II) can come in between 15.5 and 17.5, depending on what's used. You're one of the few that remembers my earlier screen name. Thank you:D Remind RTK that he needs to get out to the fields more often if he's going to flip anything. The poor boy's prop arm must be starting to atrophy and may have reached the point where he can't even flip me the bird anymore, lol. So why the change in screen name? |
RE: BME 50 owners advice needed
ORIGINAL: Pat Roy Remind RTK that he needs to get out to the fields more often if he's going to flip anything. The poor boy's prop arm must be starting to atrophy and may have reached the point where he can't even flip me the bird anymore, lol. |
RE: BME 50 owners advice needed
Copyright issues when someone decided to release a Fantastic Four movie with Silver Surfer in it after a 40 year character retirement.
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RE: BME 50 owners advice needed
Pat
That's too bad. I too enjoyed your screen name and your avitar! At least you're still here giving great advice! Sam |
RE: BME 50 owners advice needed
Land of the over-entitled and home of the frivolously litigated. [:'(]
On a more positive note: It's great to see BME Engines has been resurrected. I will attempt to bring my engine to life today. |
RE: BME 50 owners advice needed
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Houston, we have a problem. The rubber wafer in the photo seems to be stopping the flow of anything coming in through the fuel nipple on the side of the carb. When assembled, I can't even blow air through it. When the plate and wafer are removed, I can.
It was mounted sothe smooth side was against the main carb body, and the one with the little chambers was against the plate. Also, the black line that runs from the plate to the bottom of the cylinder, is that liike a PCV line? If so, why does it get blocked at the rubber wafer? It seems like it should be opened up to allow crankcase pressure to draw fuel in to the carb. Any thoughts? |
RE: BME 50 owners advice needed
Well, you just found the fuel pump. It's real important that it reassembles correctly. The view in the first picture will be the side facing out to the cover plate that was over it. I had a situation happen a couple weeks ago where a carb that had been used before and sat for some time would not draw fuel. Get that membrane wet with fuel and close the cover back up and see what happens. If it won't draw fuel now getting that membrane wet may do the trick. Thanks to Altavillan for that one, I was stumped until he mentioned it at the field. If the carb has sat too long that wafer (pump) will need to be replaced. The part is in a rebuild kit, along with some other parts that may need replaced. The diaphragm being one of them.
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RE: BME 50 owners advice needed
No dice on the gas trick. I'm off to the city to find the part.
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RE: BME 50 owners advice needed
ORIGINAL: tankertoad Also, the black line that runs from the plate to the bottom of the cylinder, is that liike a PCV line? If so, why does it get blocked at the rubber wafer? It seems like it should be opened up to allow crankcase pressure to draw fuel in to the carb. Any thoughts? |
RE: BME 50 owners advice needed
I replaced the diaphragm between the plate and the carb. I still can't get air to flow through the fuel intake when I blow into the tube. The pulse line is not blocked. The fuel intake is not blocked. What could be stopping me from getting anything through the fuel intake when the plate is installed?
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RE: BME 50 owners advice needed
doubled.
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RE: BME 50 owners advice needed
Sounds like there may be some dried oil in the passage. Time to soak it in some carb cleaner and blow it out with air a bit later. You could also try a few shots of WD40 using the red pressure tube.
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RE: BME 50 owners advice needed
ORIGINAL: tankertoad I replaced the diaphragm between the plate and the carb. I still can't get air to flow through the fuel intake when I blow into the tube. The pulse line is not blocked. The fuel intake is not blocked. What could be stopping me from getting anything through the fuel intake when the plate is installed? |
RE: BME 50 owners advice needed
Try this if you have an open hole in the plate on the atmosphere diaphragm side. Blow on the fuel line, then with a small blunt rod "gently" push through the hole. Air will flow very freely then. Be careful not to puncture the metering needle diaphragm or you will be back to the saw shop.
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RE: BME 50 owners advice needed
Best thing to do at the moment is put the carb back on the engine. Keep that pulse pump wet with some fuel to act as a prime for the carb. Choke the carb, flip the prop, and see if it draws fuel. Use a see through fuel line to make this easy. If it's dawing fuel when it's choked likely all is good.
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RE: BME 50 owners advice needed
I'm getting gas through the inlet now. I finally caought on that you shouldn't be able to blow through that line. The ignition battery has a full charge. I checked the plug and am getting a spark on a brand new NGK resistor plug. I removed the plate (I have the type with a nipple that you run a line into the fuse for constant air pressure), and replaced the diaphragm in there (came in the kit).
SS - I'm not sure where to look for the dried oil. All the ports on the pump side (the side with the screen?) were clear. The manual says to pull the screen and check for debris. Any other places that could be blocked? |
RE: BME 50 owners advice needed
As Pat has mentioned I would try and start it.
Debris/gunk can be under the metering needle, stuck in the low/high needle passage, etc.. If it still does not draw, take the pump cover off and wet it with fuel. If that still fails you have a blockage somewhere. Walbro has good diagrams of carbs so you can see all the passages that might need cleaning. |
RE: BME 50 owners advice needed
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The screen was clean. I took the atmosphere diaphragm off again the spring moves fine. I forgot what order the diaphragm and gasket go.
I'll try to start again once I get this together. I'll check out the Walbro site too. The engine sat for at least 2-3 yrs so there may be some gunk hiding somewhere. BTW - what model of carb are we dealing with? The guy at the lawn and garden store was un-happy that the numbers stamped on the carb didn't match those in his book. |
RE: BME 50 owners advice needed
Gasket then diaphragm, the opposite of the pump side.
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RE: BME 50 owners advice needed
It could be a wt-76, but then again it could be one of several other numbers. Several carbs fit these engines and work well. Just about all of them have been used, depending on part availability at the time. No big. There's a stamped number on one side of the carb somewhere. The WT part may be remoted from the number, but on the same side.
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RE: BME 50 owners advice needed
It runs!!!!!!!!!!!!!!!!!!!!!!!
It took a lot of choking since it's only 20 degrees outside and I need to adjust my idle position on the servo. Too bad it's so late now. I don't want to tick off the neighbors, so I'lll wait until tomorrow to run it some more. SS, RTK - Thanks a million for the help you provide us noobs. Without it, I'd still be stuck in the garage trying to figure out why I just didn't go electric. [X(] Any advice on where to go from here? I have a tach and should start looking at low and high ends? |
RE: BME 50 owners advice needed
It's always great to have a happy ending, and these guys here do their best in helping to make sure it happens just about all the time.
Karol |
RE: BME 50 owners advice needed
Super!!
It's cold out so any rpm numbers will be hard to hit. You'll have more than you should have. Next time you go to start it when it's cold out take your heat gun and warm the engine up for 5 minutes or so. The head mostly but up the exhaust stack and on the carb a little as well. It'll start right up after that. You're welcome, and anytime! |
RE: BME 50 owners advice needed
You are welcome, I am glad all worked out well. Gas is so much nicer than glow:)
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RE: BME 50 owners advice needed
Yep, the cold didn't help at all today. It was in the upper teens and I couldn't get anything consistant, so I guess I'll have to wait for some warmer weather before I can get some serious tuning done. I did reset the needles to factory settings and that made a big difference. I'm not sure where they were before, but they seemed off.
Thanks again fellas! |
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