RE: u-can-do 60  
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    • All Forums >> RC Airplanes >> ARF or RTF >> RE: u-can-do 60
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    RE: u-can-do 60 - 1/3/2006 6:31:21 PM   
    Chuck381


     

    Posts: 54
    Joined: 12/29/2005
    From: Mary Esther, FL, USA
    Status: offline     		Cumn thru! I just want you all to know I have been reading these threads for some hours now ( ha ha Not working) and am so glad to hear all the good info and info to help me prepare my UCD for flight! Joe I do have a question about the Saito engine going inverted as well as do I need a pump with this set up? Thanks again I have enjoyed it all the way! You guys kill me!

    Chuck

    (in reply to AcroJo)
           Post #: 1351

    RE: u-can-do 60 - 1/4/2006 2:27:35 AM   
    seanychen



    Posts: 2914
    Joined: 7/20/2002
    From: Canton, MI, USA
    Status: offline     		If you can lower the fuel tank level somehow to line up the tank center to the carb, then you won't have the idle load-up symptom that seems to happen to some of us with unpumped Saito 100. Mind you, the carb faces up when the engine is mounted inverted.

    I have a Saito 100 currently in a H9 P40, and the tank center pretty much lines up with carb, and it runs fine inverted. It does still load up during idle a little bit, but nothing that causes hesitation or flame-out.

    _____________________________

    E_Total = M*G*H + 1/2 M*V^2
    When H=0, all of airplane's velocity becomes crash energy!

    (in reply to Chuck381)
           Post #: 1352

    RE: u-can-do 60 - 1/4/2006 1:32:05 PM   
    Chuck381


     

    Posts: 54
    Joined: 12/29/2005
    From: Mary Esther, FL, USA
    Status: offline     		Seanychen, Thanks for the advise! I have read so much on the UCD it is beginning to make my head hurt! I am about to get the set up process going on my current project and have been checking out all the info folks are saying to make it handle and fly better. So far I have come up with re-enforcing the landing gear (build up and to make sure I install the easy fueler up higher than the carb! I want to do all my modifications before I get it flying so I can just pack it up and go to the field and have fun! I had a tough decision to make as far as which engine to pic! Locals told me to go with OS or TT and some refered to Saito as the crown jewl so I researched and read so much on the site refering to the Saito FA100 it was a done deal. Again thank you all for keeping this thread going and I am going to get it started this week as the motor gets here. Good luck and fly low to avoid the radar!

    Chuck

    (in reply to seanychen)
           Post #: 1353

    RE: u-can-do 60 - 1/4/2006 2:09:48 PM   
    AcroJo



    Posts: 2279
    Joined: 1/25/2003
    From: Clarks Summit, PA, USA
    Status: offline     		Chuck, the S 100 is a good choice. I see you have done your homework regarding the position of the quick fuel valve. Many have found to simply raise it up from a too low position. Also, if need be, there is approxamatly 5/8 of an inch in there, if you would like to lower the tank right from the get go.

    On the LG block you don't have to go overboard on it. You will find a full former at the front of the wing, where the wing dowels insert. Forward of that, there is a half former. Between the two formers you will find the LG block, sandwiched between the two. There is one piece of tri stock, from the factory, attached horizontally, joining the LG block to one of the formers, You can feel it with your finger. My recomendation is to add one more piece of tri stock, horizontally, to the other former. Test fit to see that you don't cover the tee nuts, for good reason, which I will explain in a minute. Now cut four more pieces of tri stock and fit them in the cavity, vertically, in each of the corners. Again, this is done by feel or trial and error to get the right length, as I do not remember the dimensions. Finally, you will see where there are two pins, or dowells going through the two formers and the LG block, front to back. Drill and insert one more dowell between the two existing ones. I found this to be very strong and light.

    Back to the tee nuts, You don't want to cover them or glue them in, as I found that the simple tri stock mods were so strong that on ocassion I would snap the threaded tube of the tee nut from the retaining washer and would need replacement. Its a gentle balance, too strong and a mishap will do unescesary damage to the fuse. Too little and you will knock off the UC, but thats what it was designed to do to save the fuse. Good luck with the build and enjoy. Joe

    _____________________________

    Stranger in a strange place.

    (in reply to Chuck381)
           Post #: 1354

    RE: u-can-do 60 - 1/4/2006 4:00:24 PM   
    Chuck381


     

    Posts: 54
    Joined: 12/29/2005
    From: Mary Esther, FL, USA
    Status: offline     		Joe,
    Thanks a million and yes I will do as you said to stregthen the landing gear. Do I need to do any other work to the wing? Glass the middle top and bottom? So no pump needed on the saito 100 Great to hear! This im my first 4 stroke and I am still feeling my way around. Going with the CF push rods and the recomended servos but not on the Rudder. I am thinking I will need to increase my fuel tank from the size it came with as well. Any suggestions? Seems like I have tons to do BUT time well spent before might make it a very dependable plane. Joe if you ever get down south here to Hurricane alley look us up here in Ft Walton, we have a great field and good folks like you willing to get out and provide options to folks, makes the art of flying even better!

    Any other advise would be greatly appreciated and as I progress I will attach photo's to show my status. Just wish I had not quit the hobbie back in 92! But hey back in the saddle and soloed on the 3rd flight! Getting back in the groove and havin a blast! Thanks again!

    Chuck

    (in reply to AcroJo)
           Post #: 1355

    RE: u-can-do 60 - 1/4/2006 4:27:51 PM   
    AcroJo



    Posts: 2279
    Joined: 1/25/2003
    From: Clarks Summit, PA, USA
    Status: offline     		No need to work on the wing as it is very subtantial right out of the box. The supplied fuel tank is ample in size and the S100 is good on fuel consumption. A fuel pump has its advantages, so don't rule it out. I tried a cline regulator and was dissapointed. It worked well, but I like the pumps better. It gives you the option of placing the tank on the CG. The Cline Regulator is set for 'general atmospheric pressure' without the ability to adjust it. Long story short, if the outside pressure changes, your needle settings change.

    I did use 'Dubro' nylon pinned hinges all around and am very happy with them. I still have the stock tail wheel on the tail and it is holding up remarkably.

    Thanks for the invite, I'm still working on the last one from Ole' Stoney and he is now moving back up north. If I came by he would never forgive me. Joe

    BTW, I think the most important aspect of my LG mod is the one piece of tri stock, installed horizontally and the one additional dowell. The four vertical pieces in the corners were for my own benefit.

    _____________________________

    Stranger in a strange place.

    (in reply to Chuck381)
           Post #: 1356

    RE: u-can-do 60 - 1/5/2006 3:00:12 PM   
    Chuck381


     

    Posts: 54
    Joined: 12/29/2005
    From: Mary Esther, FL, USA
    Status: offline     		Joe,
    I was reading another thread and well I have a question about the Saito engine I just ordered.... Is there a problem with the bearings I need to be aware of? I hope I didnt just blow my money! I am not too sure if it was an old thread (back when the 100's were new to the market) Hope that they are all that cause that is more than I wanted to spend on an engine! Thanks again for the help! Oh yea I run Cool Power 15%, I was told that would be plenty and would lube everything just fine by other members flying the Saito's in my club. Please let me know if I need to sale this engine before I start it up!

    Chuck

    (in reply to AcroJo)
           Post #: 1357

    RE: u-can-do 60 - 1/5/2006 3:37:04 PM   
    jlkonn



    Posts: 1277
    Joined: 1/2/2003
    From: Planet Earth, IA, USA
    Status: offline     		Chuck,
    I had my Saito 1.00 bearings on a UCD 60 fail after less than 6 gallons.
    It was the retainer in the rear bearing that let go.
    Horizon warrantied it and it feels smother and quieter than when new.
    Makes me wonder if I didn't have a defect to begin with.
    I run 25%nitro Sig 20% oil 50/50 synthetic/castor.
    If I ever suspect the bearings are going again I will replace them with ceramic from this source.
    http://rc-bearings.com/
    Paul is a great guy and I have ordered 4 sets of bearings from him for various old O.S. and Enya engines.
    Good luck with yours.
    I'm sure it will run fine.
    Just pay attention to it.
    JLK




    _____________________________

    A goal without a plan is just a dream.
    AMA 97605

    (in reply to Chuck381)
           Post #: 1358

    RE: u-can-do 60 - 1/5/2006 5:09:37 PM   
    AcroJo



    Posts: 2279
    Joined: 1/25/2003
    From: Clarks Summit, PA, USA
    Status: offline     		Err, uhm, ahhh.....................yeah, lost my bearings on the third gallon. Bearings, cam lobe, tappets. Ran 30% on the reps advice as the oil content is higher. No warrenty for not useing after run oil, or should I say for admitting I didn't use it. Regardless of what the problem is, if they find rust in the case your on your own. That was two years ago and hopefully is not an issue now. Quite a few @ the field and a bud has one that he has been flying for two years now without a hiccup. Bought mine when he did so they were awfully close in production runs. Joe

    _____________________________

    Stranger in a strange place.

    (in reply to jlkonn)
           Post #: 1359

    RE: u-can-do 60 - 1/5/2006 5:33:25 PM   
    Chuck381


     

    Posts: 54
    Joined: 12/29/2005
    From: Mary Esther, FL, USA
    Status: offline     		Joe & Jlkonn,
    Thanks for the info and the web site, good info! I will try and learn to tune my ears as time goes by to the set ups of my motors! Again thanks and I will press on with it! The reason I went with the Saito is because 1) it has more power 2) I read it could pull the UCD better verticle 3) because I heard Saito was a very good 4 Stroke brand. SO there you have it !
    Later guys and thanks again!

    Chuck

    (in reply to AcroJo)
           Post #: 1360

    RE: u-can-do 60 - 1/5/2006 10:30:45 PM   
    AcroJo



    Posts: 2279
    Joined: 1/25/2003
    From: Clarks Summit, PA, USA
    Status: offline     		I don't know about ears. Early on I used to tune by ear, lean is mean. Thats why mine went. Get a tach, don't try to squeeze every last ounce out of the motor and a good smoke trail means its happy. Good luck, Joe

    _____________________________

    Stranger in a strange place.

    (in reply to Chuck381)
           Post #: 1361

    RE: u-can-do 60 - 1/5/2006 10:39:18 PM   
    seanychen



    Posts: 2914
    Joined: 7/20/2002
    From: Canton, MI, USA
    Status: offline     		No warranty for not running after-run oil? That's a whole bunch of nonsense. It certainly didn't come across to me when I bought it or when I read through the manual. I think it's just a way Saito cheaply opts out of warranty replacement for a defective batch. In some cowled application, it's a pain to even get to the glow plug, so using after-run oil is a difficult practice for some. I do run my engine dry at the end of each flying day, so to prevent rusting. For one thing, YS does not require or recommend using after run oil (unless it's the kind that does not ruin the seals). So I don't see how Saito should admit their bearings are inferior to those of YS's, although they probably are.

    I've never had Saito bearing failed. But it's probably because I have not had a Saito for more than 5 gallons. That's the downside of having too many engines. They do start to sound noisy when dry; the noise goes away when engine is lubricted with fuel. I notice the same sympton with my OS engines. I'd say it's the cost reduced bearing showing its true color.

    _____________________________

    E_Total = M*G*H + 1/2 M*V^2
    When H=0, all of airplane's velocity becomes crash energy!

    (in reply to Chuck381)
           Post #: 1362

    RE: u-can-do 60 - 1/6/2006 11:55:39 PM   
    Downtrodden


     

    Posts: 955
    Joined: 4/3/2004
    From: Calumet, MI, USA
    Status: offline     		Call me a fool, but I ordered a Super Tigre 2300 (23cc or 1.4 ci) to power my UCD 60. I've watched a friend fly his with a Saito 1.0 and was disappointed by the power. I currently have a Twist with an O.S. .61FX and the power is FANTASTIC! I'm not planning on flying this thing all out, but I do want the power to do the things the Twist can do. Has anyone out there heard of this combo w/18x6 MAS? I'm also using home-brewed skis with dual batteries. Comments and/or jeers? And to think I once lambasted a guy for even suggesting a .61 on a Twist and here I'm putting a 1.4ci on a UCD60! Live and learn. Peace

    (in reply to seanychen)