stunthanger.com
Engine basics => Engine set up tips => Topic started by: Leo Mehl on July 24, 2007, 10:19:09 AM
-
When installing uniflow tube in new Gieskie Bear I cut it too short. I also put a tank in this plane that the Moki was fed with in an old Grinder It would not run the same. I tried several things and nothing seemed to work so I thought something was wrong with the tank. I finnaly got down to no more options when the light bulb went on. Maybe the uniflow tube is too short! I added about a inch to the tube an walla it worked like it should. The motor now runs like it should and now am happy camper. The morel to the story and be like me and never give up. HB~>
-
Leo, Leo, maybe you should watch the keyboard while you type...
-
Yah, spelling is a bit offf, but jest of solving problem was informative if I understand it correctly. You put a known good engine with a known good tank in a new plane.
The external uniflow tube that should be in a good position to get the proper anount of air intake was not in the proper position because it was too short. You then added lenght to the tube to get it in the right place to pick up proper air intake and the engine ran as good as before, in the original plane, engine, tank combination.
Sounds like you fixed your problem just ducky, congatulations.
Be happy, fly well, have fun, enjoy. Thanks for sharing the problem solution.
Will file this my in troubleshooting memory bank, get er in the right place.
Tell me what I say.
Jerry
-
I interpreted your problem to be that the uniflow did not go far enough back in the tank. I have made tanks with uniflow at the back, along the side and at the front. All worked well for me. Do what ever works for you. I use a one way valve in open air uniflows and put the outside end wherever.
-
OK Leo, who guessed right?
1-Experienced Helpfull Gentelman who guessed tube inside tank.
2-Old Fart who guessed tube outside the tank.
-
I am afraid to type who answered problem the best because of my typing. I sometime think I have 10 Thumbs. The tank was used in plane before so am sure that uniflow was in proper place. I think that tube was too short and not far enough forward. The solution worked so It must have been the problem. Dum Post Maybe. HB~> HB~> HB~>
-
I am afraid to type who answered problem the best because of my typing. I sometime think I have 10 Thumbs. The tank was used in plane before so am sure that uniflow was in proper place. I think that tube was too short and not far enough forward. The solution worked so It must have been the problem. Dum Post Maybe. HB~> HB~> HB~>
Don't be afraid to type my good buddy in balsa! LOL!! Just learn to click on the tab that says "Spell Check" below the message window! ;D it took me a while to get used to that. And I still forget sometimes! **)
-
So which one was it Leo?? ?? ?? ???
The tube in the tank, or the tube outside the plane? :D
-
And as to "all thumbs", my ring size is about a 20.......... so I DO have all thumbs! LL~ :## **) **)
-
I think he means the outside of the tank. I have had several commercial tanks(wont mention names) that I had to add a peice of fuel tubing to. In fact it was two different brands of tanks. Here is something to try. Turn your uni-flo vent to the rear of the airplane after you get a needle setting and see what happens. The ARF Nobler tank maybe be a fluke, but, whenever the vent came loose and pointed to the rear of airplane. The engine would go extremely rich. Have fun, DOC Holliday
-
Outside tube. uniflow won't work if inside tube is not in right place either.
-
Leo, Leo, maybe you should watch the keyboard while you type...
Thanks But I thought you were not supposed to watch the keyboard when you typed. In any case I finnally spell checked the post thanks to you!
-
Thanks But I thought you were not supposed to watch the keyboard when you typed. In any case I finnally spell checked the post thanks to you!
Well that's what they told us in school...insured that we did so by using all blank keys--what frustration.
I noticed you cleaned up the original. Very nice. I hope, Leo, you understand I was just ribbing you a little...apparently I need to flag my jokes (re: another thread). Don't hesitate on my account to type any way you want.
Your typing may not be the best, but you sure build prettier airplanes than I do!
--Ray
-
Wow, that is my wrist size. LL~ LL~
I was thinking lower! H^^
-
Here is picture of tank uniflow and overflow setup. May be interesting to a few people that would like to do a clean setup. This time I am using spell check! Spell check flagged uniflow. Go figure. Another thing I do is build the crutch first and mount the engine. I then set tank on crutch platform and run a 3/32 rod into the pickup tube and make sure it lines up with the needle valve body. It is important that it is right on. this will also tell you if pickup tube is level.
-
Leo, Good picture, worth a thousand words, Thanks for post, every new proceedure ya learn in life may pay off at some time or another.
Jim Tomerson, Didn't mean to insult you on my last post, I modified it knowning you have been helping many people for a long time. Recheck my original reply for your more appropriate title.
-
Hey you guys are my friends. You can insult me if you wish. I'm a happy flyer. Just like my wife said about my drinking before we were maried 29 years ago. You are a happy drunk. I was then doomed to a life of happiness. LL~ LL~ LL~ LL~ LL~ HB~>
-
Jerry, pretty much right the first time. H^^ Appreciate the courtesy in any case.