U Can Do 60
 

Hello Everyone

I am trying to finish up on my U Can Do 60 but I have ran into something that I wanted to make sure of before moving on. I am installing a Saito .91 in the inverted position. By installing inverted this will place the throttle linkage predrilled hole on the opposite side of where it needs to be. I can re-drill on the other side but I think this means I will need to remove the gas tank to re-drill a hole for the throttle tubing. Also I think I am going to have move my servo over to accomodate the linkage. I am a new builder and didn't see this as I was putting everything together. The directions were good and clear but didn't mention anything about opposite side throttle connections (or at least I didn't see them) NOw for my questions:

*If I re-drill another hole on the opposite side will this weaken the firewall?? (have seen some postings about weak firewalls in UCANDO's and don't want to add to what might already be a problem)
*Is there a throttle connection or device that will allow for everything to stay as is?? (seems like I have seen some gizmo called a throttle connection for 4 strokes)
*Will Du-Bro's Flex Cable assembly handle the throttle linkage job? It says so on the package and in the description. It seems like it would bind or not have a quick response to throttle movement.

Ok....Thanks in advance. Hope everyone is having a great weekend.

Lamar

RE: U Can Do 60
 

On some four stroke engines you can turn the carburetor around which will put the throttle arm on the other side. I have done this on my OS 70 Surpass; I do not know if it works the same for a Saito.

If you cannot reverse the carb, drill the new hole. A single 3/16 hole is not going to weaken the firewall.

Here’s the linkage you probably read about
http://www.shopatron.com/product/pro...d=DUB665/101.0
All it does is move the connection point forward for cases when the carb is extremely close to the firewall.

RE: U Can Do 60
 

Lamarj, first you will not weaken the firewall by drilling a hole on the opposite side, just make sure that it clears where the fuel tank will be.
also, you can rotate the carb on the saito by removing the two screws that hold it to the backplate, and just spin it around making sure you dont loose the metel washer and o-ring that is on the intake manifold where it goes into the cylinder;)
i have built 2 ucd 60 planes and here are a couple of pics, maybe they will help.

sorry, i thought the pics had better wiews of the throttle hookup[:@]

RE: U Can Do 60
 

Gary....Thanks a million!! I feel like a dummy now as after looking at the engine I can see how the carb can be reversed. Duh!!!

In your photos, is that a regulator or pump?? If so, is it th my time to invest in this since I am still building?? Another week or two and a few more bucks is nt going to kill me especially if it means I'll have more fun flying than trying to tweak.

Thanks again
Lamar

RE: U Can Do 60
 

Lamar, that is a cline regulator, with the 60 size you will notice that the tank is going to be higher than the carb by quite a bit and will flood easily, the only way you can fight this without a regulator i to either lower the tank(a big job imo) or use a gp or dubro easy fueler valve mounted higher than the carb,but even with the easy fueler you still have to fuel and then fire up the engine quick and fly or it will still eventually flood.

the cline was a cure to the problem and then you can also if you want can put the fuel tank over the CG if you want.there is also the iron bay regulator which is cheaper in price but i havent used one of them, the cline is pricey at 60 dollars but if your interested in one here is the link below. there is also a cou;le of threads on the 60 size you can get a great amount of info from here on rcu.

http://www.billsroom.com/pcfs/produc...fs_details.htm

RE: U Can Do 60
 

Thanks Gary....I really do appreciate your help.
Have a good one.
Lamar

RE: U Can Do 60
 

Lamar, here is the link to the 60 size ucd thread, good luck!!

http://www.rcuniverse.com/forum/m_1488953/tm.htm

RE: U Can Do 60
 

Lamar, if you are going to use a Cline regulator go ahead and move the tank back to just above the wing. It puts it over the cg and helps the plane do better 3D.

I use an inverted Saito 100 w/Cline. Fun plane.

RE: U Can Do 60
 

here is a pic of what Kwigen is talking about, does help!

RE: U Can Do 60
 

Is this something that I can do relatively easy. I am just a bit over a beginner at this. It looks simple enough and I noticed that you moved the throttle servo up also.

Thanks for the update and thanks for hanging with me on this project.

Lamar

RE: U Can Do 60
 

Lamar, if your just out of your trainer i would go ahead and do it up stock, thats how i did and this plane flys great and easy for a second plane, then after a while you can move the tank back and yes its not real hard, you just cut out the brace on the one former and sand it a little till the tank slides in and glue a block to where the front of the tank is on the bottom where the cockpit is to keep the tank from sliding forward and then use some weather stripping(thats the black strips that you see on my tank) this holds it in snug when you put the wing on.

RE: U Can Do 60
 

a few other things about this plane is dont put on the wheelpants untill you land hard and break off the LG and reinforce it,(they break off real clean) because the pants will go right through the bottom of the wing and you will have a lot more to repair!!

also use 4-40 rod for the pushrods to the control surfaces(or carbon fiber rods, the stock are not strong enough imo and will bend under stress

cut most of the bottom out of the cowl out (at least half) for proper cooling!