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U-Can-Do 3d 46?

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U-Can-Do 3d 46?

Old 07-10-2003, 04:29 AM
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Default RE: U-Can-Do 3d 46?

Originally posted by rkramer
tower's latest estimate is late july now... anyone know of another online hobby store that has them in stock?
Try chiefaircraft.com.
Old 07-10-2003, 10:40 AM
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Default RE: U-Can-Do 3d 46?

Shaffers Hobby Shop in St. Louis has a few.
Old 07-10-2003, 03:11 PM
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Default RE: U-Can-Do 3d 46?

Well it has been about 7 months since i visited this site, but i too had to order one of these UCD 46's...I have had my Flip on the work bench for nearly 8 months debating on some of the things discussed on this thread....check out the pic of bench...the main reason I haven't finished that Flip is I hate torque rods, that is the elevator using one servo for each half via torque rod, so i ordered an extra servo, nice hanger 9 servo wheel, all the other stuff and had all intentions to mount rudder servo in cockpit (pull-pull) and use 2 servos for each elevator...just haven't had the time to complete this....Since then they came out with this UCD 46 with out the torque rod set-up and i liked that, so it is on back-order...late july as of today...I have both the saito 72 and os 50 both new in box, couldn't determine which one for flip so ordered both, all carbon fiber rods, ball bearing control arms, aluminum servo arms, nearly the best of everything you can buy as you can see in photo, now from what i read here there is so much talk about this and that as far as engine size, balance issues, etc.. this one might just sit on the bench for several months, lol...no i am going with the saito 72 this is the 2nd one i have, also have the 180...and if you want to know why, i don't know of another engine that you can put 3 fingers on the spinner and give a quick back flip and it will start 99% of the time first try, i have been flying these models for 25 years and the saito is a nice motor, so is os and the ys....anyone flying it already with the 72, please let me know, very curious but i think it is the ticket...also 30% heli fuel is the only way to go with the saito's.....again i sorry this is so long of a post
Old 07-10-2003, 03:25 PM
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Default RE: U-Can-Do 3d 46?

Does anyone have a pic of the engine installation with the Saito 100?
Old 07-10-2003, 11:43 PM
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Default RE: U-Can-Do 3d 46?

does anyone know if a la 65 will work
Old 07-11-2003, 12:38 AM
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Default RE: U-Can-Do 3d 46?

la .65 not the best idea
Old 07-11-2003, 12:46 AM
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Default RE: U-Can-Do 3d 46?

Hey SnappyRolls, What photo are you referring to?

RB
Old 07-11-2003, 06:08 AM
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Default RE: U-Can-Do 3d 46?

Hm...
Has any one else found that the firewall on the UCD46 had UP-thrust built in vice Down-thrust? I do in fact have right thrust built in (thank goodness).
Old 07-11-2003, 12:55 PM
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Default RE: U-Can-Do 3d 46?

I will have to try to put it on again, it really wasn't much of anything other than the FLIP 3D that now I am debating on finishing because of the work needed to add dual elevator servos, now that the new UCD 46 has them this may go on the back burner...I just wanted to post the pic to show all of the extra goodies that were purchased, it may be over-kill with the
ball bearing links, carbon fiber rods, aluminum servo arms and all but my big worry now is the weight of using all of this on the UCD...I hope that I will not have to relocate the rudder servo on this one too but if I do at least I already have all the stuff...I am not buying another motor..It has to be either the OS 50 or Saito 72.....
Old 07-11-2003, 02:00 PM
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Default RE: U-Can-Do 3d 46?

Nothing but a big mess right now...but i have reason to organize since UCD 46 is on the way...anyone want to buy Flip, lol
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Old 07-11-2003, 03:06 PM
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Default RE: U-Can-Do 3d 46?

Don't give up on the flip! Put that thing together with the elevator torque rod and fly. You'll wish you had finished it right away! I had the 60 size 'It can't do 3D' and the flip can fly circles around it!

Originally posted by SnappyRolls
Nothing but a big mess right now...but i have reason to organize since UCD 46 is on the way...anyone want to buy Flip, lol
Old 07-11-2003, 03:09 PM
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Default RE: U-Can-Do 3d 46?

I might consider taking the flip off your work table. Let me know what you'll take for it. Rodney
Old 07-11-2003, 07:31 PM
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Default RE: U-Can-Do 3d 46?

It is interesting that Great Planes Designer Mike Cross discourages the use of an OS .91 in the instruction manual. Nobody has said that they wished they had used a smaller engine in the .46 and the .60 size. The engine's hovering RPM's can be brought up with a 4" pitch.........same with horizonal speed. The .46's wing area is 900 squares vs the .60's 1,000 +/1 so there is a lot area to support an extra 8 ounces.
Actually the Saito .91 might better than the OS.......
Old 07-13-2003, 10:39 PM
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Default RE: U-Can-Do 3d 46?

Originally posted by TOMAPOWA
Out of curiosity, how well does it perform with that OS 70 ? I plan to use the same engine but have heard that it might be slightly under-powered for verticals. Also glad to hear you have no fuel problems. This always had me worried (inverted, no pump, tank/carb levels, etc...)

what he said..
Old 07-13-2003, 10:49 PM
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Default RE: U-Can-Do 3d 46?

i have an OS-70 on a morris hobby sledge at under 5.5 lbs i would want to see this motor on anything heavier as its not ready for anymore weight to have good verticle. 13 x 6 apc. on a u can 3d we are talking more weight than my fun fly weight... it will be great to burn holes in the sky down low
Old 07-14-2003, 02:13 AM
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Default RE: U-Can-Do 3d 46?

Well, I spent the whole day flying my 46 UCD. Tried to find a good hovering prop for my OS 61FX. I ordered every prop in the book last week. Tried a 13X4, 13X5, 12.5X6, 14X4, 14X5, 14X6, 13X8. I got calluses on the palm of my hand from reaming out all those props at the field.

Then I tried removing the baffle from the muffler, and cycled through all those props again. The result? Tailslides out of a hover with every one. The 12.5X6 came closest to holding a hover.

I had four people at the field who got interested in my project, and one of them suggested a 12.25X3.75, and sure enough, it was able to slowly pull itself up and out of a hover. With that prop, it turned 13,800 on the ground, unloaded quite a bit more in the air. With no baffle it was a real screamer!

I've had it! Out with the 61FX, and in with a Saito 91. I don't know if I'll buy another, or haul the one I have out of another plane.

... I also had quite a few mixture problems with the inverted setup resulting in a few deadsticks .... and we had some heavy weather at the field, with a gusty crosswind during most of the day. I've pancaked the UCD into the dirt, stalled and slammed it onto the field (resulting in totally flattened gear), and dumped it down into the tall grass behind the apple trees. Not a crack or a mark in the plane after all this abuse.

I know I'm gonna like this plane, but Scotty, get those dilithium crystals glowing white, we need more power!
Old 07-14-2003, 02:32 AM
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Default RE: U-Can-Do 3d 46?

the saito 100 with a apc 15x4w or 16x4w (depending on altitude) is the best combo.
Old 07-14-2003, 12:27 PM
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Default RE: U-Can-Do 3d 46?

What servos is everyone using on the .46 size? I did some cross referencing in the manuals for the .46 size and the .60 size u can do and the results are kind of interesting.
They tell you to use the same torque servos in both airplanes. In the larger one they list hobbico servos, in the small they list Futaba digitals.


.60 size servos total $170.94 from tower, combined weight 10.78 oz
.46 size servos total $534.90 from tower, combined weight 11.04 oz

does the .46 size really need 50 oz in + servos on the elevators? how bout 90+ oz in on the rudder? this is after all a <6 lb plane isnt it?

Dylan
Old 07-14-2003, 12:34 PM
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Default RE: U-Can-Do 3d 46?

Call me brave...call me cheap I'm just going to use 531JR on a 5 cell pack. Have used this combo on many plane and hasn't let me down yet.
Old 07-14-2003, 12:41 PM
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Default RE: U-Can-Do 3d 46?

Birds of a feather ....

UCANDO 46 / Funtana
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Old 07-14-2003, 12:57 PM
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Default RE: U-Can-Do 3d 46?

Hey "Bolts", I agree with you ! I'm using standard JR 537's in my big Can-Do, However, the "Big Boys" did scare me into laying out another $30.00 for a high torque rudder servo. Anyway, I'm only using a OS.61 for power and am having a ball with this big thing ! Unlimited vertical ? Who cares ! I'm lucky if I get it up and down in one piece!
Ugo
Old 07-14-2003, 01:00 PM
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Default RE: U-Can-Do 3d 46?

what a combo!!!!
Old 07-14-2003, 04:12 PM
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Default RE: U-Can-Do 3d 46?

Call me a fool, Lord knows many people have, but the only high torque servo I have ever used is the Tower TS-65. They're listed for $29.99 at the moment, but they are three for $85.97. Now if you order a few more things to break the $150 barrier, you get 10% off. Couple all this with free shipping and I make that out to be $25.80 per servo.

I probably have 15 of these servos, and they have never let me down. Dual BB with 77 oz of torque and they include a hefty servo arm. I have taken these apart and I can tell you they have stuffed the biggest possible motor in there, and the wide helical output gear is a thing to marvel at. You won't be breaking that one! They center very well, and mount in standard servo mounts.

I think they're Hitec HS-605BBJ servos re branded, but who cares?

I have them on the UCD 46 for rudder and both ailerons. I used two S3004's for the elevator, considering the small size of the surface.
Old 07-14-2003, 08:52 PM
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Default RE: U-Can-Do 3d 46?

I am picking mine up this Friday at the LHS. Looked it all over and nothing is broken and it looks like it has good glue joints as well. They just got it in last week and the covering doesn't have wrinkles in it at this time also. When I pick it up I am also going to be picking up a Saito 91 4 stroke enginew for it. I have this engine in my GP Spacewalker and it has been a very reliable engine.
rwh, let me know how the Saito 91 works in yours and what prop you end up running. I went with the Saito over the OS because of the size difference and the big weight savings. Hopefully I will have it flying by the end of next week. Will keep you posted. Chuck
Old 07-16-2003, 01:45 AM
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Default RE: U-Can-Do 3d 46?

What do you guys think about joining the elevator halves and putting a HS605BB servo behind them? My radio doesnt have ailevator mixing. Also what do you think about using JR's new .32 ounce digital on the throttle? As per the instructions you end up with about 11 ounces of servos. im thinking i can get away with 6.5 ounces of servos, and still have plenty of torque on everything.


Thanks,

Dylan

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