RE: U-Can-Do 3d 46?
 

Take a look at the specs on these engines and please give some advise as to what engine is best.

FS-70 II Surpass $219.00

SPECIFICATIONS
Stock Number: OSMG0872
Displacement:0.702 cu in (11.5 cc)
Bore:1.02 in (26 mm)
Stroke:0.87 in (22 mm)
Practical rpm:2,000-12,000
Output: 1.1 hp @ 11,000 rpm
Weight:20.3 oz (580 g)

O.S. .50 SX Ringed $209.00



SPECIFICATIONS
Stock Number: OSMG1951
Displacement: 0.499 cu in (8.17cc)
Bore: 0.866 in (22mm)
Stroke: 0.847 in (21.5mm)
Practical rpm range: 2,000-20,000
Output:1.9 hp @ 17,000 rpm
Weight: 14.3 oz (406g)
Includes: 60LH carburetor, #8 glow plug
Requires: muffler, drive hub

Saito 72 $224.00
16.6 oz,

Saito 82 $254.00
17.6 oz

YS 63 $239.87
RPM Range: 2,000 to 12,000 RPM
weight: 16.23 oz. (460 grams)



0s .50 fx Ringed $159.99
SPECIFICATIONS:
Stock Number: OSMG0550
Displacement: 0.499 cu in (8.17cc)
Bore: 0.866 in (22mm)
Stroke: 0.847 in (21.5mm)
Output: 1.8 hp @ 17,000 rpm
Practical rpm range: 2,000-20,000
Weight: 13.8 oz (390g)
Recommended Props: 10x8, 11x7

RE: U-Can-Do 3d 46?
 

Britton, if i had the money i would have gone with a Saito. I really wanted the 82, but i am sure this crazy folks would have convinced me to get the Satio 100.

As it is with my budget I purchased a Magnum 91 from Tower for $145 ($170 - 25 coupon). For that price it was definetly worth a try. I had my first flight today with it, but that is for a different post.

Bore: 27.7mm
Stroke: 24.8mm
Displacement: .91 cu in
Practical rpm: 2,000-11,000
Normal rpm: 9,500-9,600
Weight: 22.4 oz

RE: U-Can-Do 3d 46?
 

Ceegee, i love my 46 AX, and it did a fairley decent job of hauling the UCD, it will be great in that katana profile if you get it running well. It is now in my Avistar and that thing screams. I get a little worried from time to time because its going so fast. I cant figure out if its one of my wheels or the the rubber bands but every now and then when i hit terminal velocity in the Avi i get this odd noise. The guys at the field say it sounds like a big tucks jake brake.

A while back i had bubbling problems in a tank and i added foam and a different type of clunk. It looked kind of like a stone, almost like an airstone for a fish tank if you know what that looks like. That really seemed to help at the time.

RE: U-Can-Do 3d 46?
 

HAHA! I am hogging the thread.

So today was the first flight with the Magnum. I have to admit i was still about 10-15 minutes short of the recomended break in time but i just couldnt see it running without flying it. Well the engine thought better and kept stalling on the runway when i had it at idle. It ran great at full, but just wasnt idling. Possible because i had it running rich. But it ran great with the glow plug ignitor on. So i tried switching glow plugs. Still the same. So I ran her a little bit more on the ground.

Finally i kept the throttle a little higher and had some one hold it and then let it go. What a difference. I am so used to 40 size 4 strokes it felt like I was just gliding it around because there was hardly any noise, and my throttle was at a 1/4. I got to try one hover and I held it for all of about 10 seconds, but felt a lot more comfortable.

Well stupidly i tried to run her around at idle to see how it behaved. STALL. Low and over the runway. No way to get it back. Blew out the Landing gear again. I think i may actually take the chance to lower the tank.

Not much of a flight report. Will give a better one when i get a real flight in. But I can tell i am really going to like it.

RE: U-Can-Do 3d 46?
 

Britton... I like 4c's... Some like the 2c's... I have/had a YS 63FZ on
my UCD 46.. I loved it.. But in the summer here in AZ.. I was wanting
a bit more... I think the YS is just a tad less than the Saito 82, because
the 82 will turn a bigger prop better IMO... Anyway that would be my
choice.. Saito 82....

RE: U-Can-Do 3d 46?
 

sctcrash... Sorry to hear of your problem....

As you know I was going to use my Mag 91.. But now have changed to the
Saito 100 since I found a Great Deal on one!... If I ever get working on it...
Anyway people at the field was telling me that they would be surprized if I
did not have a flooding problem with an inverted Mag and not lowering the
tank to the level of the carb.. I told them that I lowered the tank as far as
it will go without cutting (more) into the engine mount(GP60-120) or moving
the tank back... And that I was under a half inch above the carb.. And still
they thought the same on the flooding with the Mag????... But I'm sure I
read somewhere that someone had no problems??? As I said I was going to
try it and lean the low end as much as I could to see if that helped if not I
was just going to lower the tank as it should be... I just said the above
because you said you may lower your Tk. And that if you do you should
get it even with the carb...

Or..... get one of those regulators<?> Or on board glows... That a make it
work....

RE: U-Can-Do 3d 46?
 

:)I've never had a flooding problem with the 46. The 60 is far worse but the 46 isn't bad. I wouldn't change a thing until you fly it and experience a problem. Like raideron says...it really isn't too bad.
Also, one of my new favorite landings is the KE landing. Thing of beauty.
Thanks
Barry

RE: U-Can-Do 3d 46?
 

Crazy folks?

RE: U-Can-Do 3d 46?
 

Britton, Out of the ones that you have listed I would go with the Saito 82. It's actually lighter than the 72 and has more poop. Or is that pep? [:-] Anyway chief aircraft will send you a "monthly specials list" if you send them your email address and you should be able to get one for about $235. [link]http://www.chiefaircraft.com/[/link] I would think that you'd be happier with a 4 stroke on the UCD.

Sctcrash, I checked out a bubbleless filter from Tower and that sounds like it would do the trick. Thanks for the idea. [8D] I didn't think of that. I did put some foam behind the tank so I'll see tomorrow if that helped. With your UCD I would just get it running and fly around through some tanks of fuel before trying hovering or anything else. If it's anything like my Saito 82 was at first they aren't real reliable untill they've been around a bit.

Hey Gary, I got to thinking that I could put an extra set of landing gear on the top of my plane and fly inverted. [8D] It would probably help with inverted flat spin landings too. [X(]

RE: U-Can-Do 3d 46?
 

Time to put you guys to work. I have been flying a little over a year. 35 to 40 flights. My abilities are that I can land, fly circles, inverted, loops, and land without crashing most of the time. Give me some hints as the throws i should start with, where to start as to what i work on first and give me any ideas as to what to expect. Flat spins or flat spin landings are not an option right now (Barry). I did that one on my last plane. Sig Kavilier. I fly a slow poke now with a Saito 72, which flys sloooooow. But doesn't do much else. It has an 18" flat-bott. wing with alot of dehidral. What can i expect out of UCD with saito 80?

Doug

RE: U-Can-Do 3d 46?
 

Doug, just set it up soft on the elevator(about 3/4 in to start) and soft on the ailerons (1in to 11/2in) to start and just fly it around a little and then you can up it as your ready, with that engine your ready to get out of any troubles you get into except the ground;)

you can expect the best flying plane you have ever flown, and easy too!, go forward with confidence, just not to wild at first and you will be an old ucd pro before long[8D]

llet us know how it goes!!

got some great new inverted pics CEEGEE:D will post tomorrow;)(even hovering ones too!!!!!)

RE: U-Can-Do 3d 46?
 

Great [:-] Can't wait to see them......[>:]

Dougwill, If you have a computer radio you could set it up with dual rates and some expo and then fly up a couple of mistakes high and try it out. It's relatively easy to fly. You'll do fine with it. It's about as fun as it gets. [8D]

RE: U-Can-Do 3d 46?
 

dougwill.... As CeeGee said:-)... If you have a computer radio...
Get all you can get on your control surfaces... Then just adjust
with the dual rates setting on your radio... say 30-40% on the
low setting and 100 with expo on the hi... then readjust as needed..
Some radio's as mine does not have duel rate on the rudder but
IMO it's not bad on that surface... But I'm saving for a JR replacement...

If you control the sticks good.... The plane flies like a kitten... I don't
think you'll have a problem with it... As with most planes and maybe
more so with the Do... very little stick keeps all in control...

35-40flts/yr..... Dang.... I almost get that in a month... No wonder my
fuel bill is so high:D... I did spend "way" more than I thought(and told
the boss [X(]) I would for my 17mos. in the hobby:-(... But it's Great:D

... My "Do's" still sleeping:-(... I woke it... But then it scared me... It had
that.....Just wait look.....:(.... But man the Saito 100 sure is running GREAT
in the 4*... already got about 15 flts on it.... And it runs Sooo Smooth:)
I do a bit of a roll out, slowly push the stick... And she's in the air NOW!!
Man.... Gary.... Did you put wires on the wings too:D

RE: U-Can-Do 3d 46?
 

ok guys, here are some pics of me and my kids having funnnnn ucandooooing it:D andy didnt have as much fun as me and Brock[:@].but he has a alpha to put all the stuff in and he will be back.

CEEGEE, now remember im only 4ft tall so the inverted slow by is only about 3ft off the deck:D

Ron, i do have my muffler on my blazer wired[&:]

RE: U-Can-Do 3d 46?
 

heres some more:D

RE: U-Can-Do 3d 46?
 

its days like this we live for[8D]

RE: U-Can-Do 3d 46?
 

Gary... Looks like you did have more fun than..... Glad to see ya'll enjoying
the air..... The peanut gallery at my club would be on you tho.. yelling...
Lower.... Lower... Lower...... But they won't do it:-).... Great flying!!

Yea.. I was trying to hover the heaver 4* off the deck, but was having a time with
it because it just wanted to climb with the slightest touch of the throttle.. I
can imagine the re-learning I'll need on the "Do".... If the wings stay on:D

RE: U-Can-Do 3d 46?
 

:)Great pictures. It does look like you have great time flying, especially with your family. That's a funny looking "Do" crashed in the second picture.?!?!?!? Nice low passes. Is that as low as you can go?
Thanks
BArryy

RE: U-Can-Do 3d 46?
 

Thanks Ron, notice there is no wing around the h9 arrow, all my fault, oil soaked rubberbands because he left his at home in Vegas[:@]he is a good kid though and didnt razz me to much:)

only 2do's BArryy:D,and i can go lower but im not sure i should:eek:, but i am sure i will and will send pics when i do:D, might take a few pics to get all of it in,he he he he[X(]

RE: U-Can-Do 3d 46?
 

Great pictures. But it looks like it's suspended with wires or string or something..... No body can fly that low...... can they (?).....[X(] Yikes!! I gotta get some practice in...... I'm falling way behind......[&o]
I'm glad you had a good time with your kids. [8D]

RE: U-Can-Do 3d 46?
 

Hello Everyone!
Flew 4 flights with Slow Poke. UCD will be ready by end of week. Looks so good that im afraid to fly it. I know i have get over it and just fly, fly, fly. Will set the rates up as suggested. Right now i have standard servo horns on plane, will set up max travels, and 50% on low rates. Not going to worry about expo right now. Will fly it easy till i'm comfortable or we run out of flying time. In ohio you never know when your last flight will be. Flew my wife on trainer cord last night. She didn't to to bad. She enjoys going down to the field.

Doug

RE: U-Can-Do 3d 46?
 

dougwill... You should do good with the "Do"... She does fly nice and easy
and will almost float forever.. It's great your wife enjoys going and flying
You have fun, and keep us updated..

RE: U-Can-Do 3d 46?
 

Everyone thinks I am a pro at landing. I try and tell them its just the plane, but since they dont beleive me, i will take the credit.

Ceegee, i have to remember to try and keep it simple till i break the engine in ITS JUST SO HARD!!

I did notice when i had it on the ground with the 4s cranking that i get a lot of elevetor flutter. It seems it comes from a combination of my servos(Futaba 3004s) having a little play, and my connection to my contol horns. My hitech rudder servo definetely has less play. What does everyone recomend for better control horns.

RE: U-Can-Do 3d 46?
 

sctcrash... I'm still using the stock setup.. only changes are the 440 rods
and dubro extra strength long arms... And there all doing good so far..
I'm sure all will give info... If money is of no concern... I would go with
central hobbies setups....

http://www.centralhobbies.com/contro...e/carbrod.html

But you can find decent setups in most the internet hobby shops....

RE: U-Can-Do 3d 46?
 

sctcrash, i have all the slop out of mine(central hobbies carbon fiber w/dubro balls) and my control surfaces have always fluttered when on the ground, i think that once airborne its not reverberating off the ground, i have no problems in the air, hope this helps.

CEEGEE!!!! put that magnifying glass up:)(thought i had those wires mirrored good)[X(]

my wife wont let me hook her up on the trainer box:(

RE: U-Can-Do 3d 46?
 

GJEFFERS
What size carbon rods are you using on UCD? I will try the stock stuff for now. I do have Dubro extra strength servo arms ready. Might order the carbon rods & ends. Sorry about the wife thing. Haven't seen any lady fliers out there. I have very supportive Lady. If she would only learn to cover planes. [8D]

Doug

RE: U-Can-Do 3d 46?
 

It is hard to resist doing wild stuff at first but they just aren't too dependable at first. I have a new Katana profile and thought I had the motor set up just right. I had several flawless flights in Monday but yesterday it dead sticked over the runway and about 6 feet up. The crash knocked out the landing gear. Just a thought...

Gjeffers, I knew there was a trick to it........[:-]

RE: U-Can-Do 3d 46?
 

Ha, thats exactly what happened to my UCD. Stalling over the runway is the worst. I need to install a parachute so I can drop it straight down. I knew there was know way i was going to be able to turn it back to the runway, so now i need to glue my gear back on. Has anyone who reinforced the landing gear had problems with greater damage on a hard hit. I dont want to reinforce the landing gear at the expense of more damage to the plane.

I will watch for the flutter in the sky. I have the 440 rods and Dubro servo arms. I may think about those Carbon rods though, looks like a nice setup.

RE: U-Can-Do 3d 46?
 

:)I use carbon fiber pushrods on both sizes of UCDs. I use the 5/32" pushrod with the titanium 2-56 ends. They are plenty stiff for either plane. I just use the standard control horns with a 2-56 screw on clevis. Works fine and is very very light. I'm a weigth kick to keep the weight down.
THanks
Barry

RE: U-Can-Do 3d 46?
 

Thanks Barry
What type servo arms do you use?

Doug

RE: U-Can-Do 3d 46?
 

dougwill, Barry has it right, same setup as mine except i use the dubro ends with safty latch.get the 5/32 carbon fiber rod with the 2-56 titanium push rod ends and use jb weld to join them;)

crash, no problems since reinforcing mine eith lots of 30min epoxy, see pic for 6-32 allthread install too;)

thanks Barry, got it!![sm=thumbup.gif]

RE: U-Can-Do 3d 46?
 

sctcrash... Mine ripped out the tank saddle and the the section that holds
the wing dowel.... But of course I was trying to fly more then I should have
instead of landing, doing the low invert pass.. Then remembered the fuel..
So I was going to pull a half loop and land with the wind about half way down
the runway... Almost made it to the top before that dreaded "no sound" at
about 5'... I was able to pancake it in, which is what caused the damage..
All at the field was surprized of the min. damage.... So I would say....
Beef the gear up:-)

RE: U-Can-Do 3d 46?
 

Well for my set up (for the control rods) I found some carbon fiber tube type stuff from Tower (I think that's where I got it) and put some cut off sections of 2-56 threaded end in the GF tube and also put a little band of aluminum tube on the end where the 2-56 goes into to keep it from splitting. For the servo horns, I wanted to extend them a little and found that Dubro has a pack of longer ones that did the trick. They were a little pricey though but they work good. And as far as the landing gear I took it all apart and reglued and stuff and it's plenty strong now. I've bounce it in more than a few times and it's almost idiot proof. Well, nothing's fool proof to a competant idiot but you get the idea. [:-] I'm sure if I bashed it in hard enough it would just break something else then I would be saying " honey I need another UCD " [X(]

RE: U-Can-Do 3d 46?
 

:)dougwill...I use the Dubro heavy duty servo arms. I use the longest one one the rudder and the next longest on everything else. I get plenty of throw. Well,...maybe not. Sometimes I don't have enough throw to recover. So I have to recover@!??!?!@?
Thank
Barry

RE: U-Can-Do 3d 46?
 

:)You're welcome
Thanks
Barry

RE: U-Can-Do 3d 46?
 

Barry Recover as in Monokote, I get you. :) 5/32" carbon fiber, titanium ends, Thanks guys!

Doug

RE: U-Can-Do 3d 46?
 

Hey Gjeffers,
Man I wish I had a back yard like yours. Nice pics your making me envious.

Hey Barry,
Nice to see you on the thread.

Hey Raideron,
Good advice to our new comers.

Hey CeeGee,
As always hello.

Welcome Dougwill.....These guys are the backbone of this thread and when I was getting ready to fly my UCD, I did all of the improvements these guys suggested and have had nooooooooo problems. I made braces for the horizontal stab from left over push rods. I drilled through the LG block and epoxied two rods through there. I put an OS 90 4C on the nose. Ran two servo screws thru the tailwheel bracket(keeps it from pulling out during your harrier landings). I still have the stock hardware on the controls but will upgrade someday. I'm using Hitec 635's for my servos. These guys know what they're talking about. Your going to love this plane.

Now for news on the SPUD home front: I finally flew my Byron 60 size SUKHOI after 14 years. Flies great. Its heavy compared to some of the stuff I've been flying lately......ie....UCD's. After getting caught up with the thread I threw the old UCD on the charger to get it ready for some air time tomarrow:). Works been nuts since the hurricane, I feel a deep sorrow for those folks in LA:(, I went through Andrew & know for a fact they have a long road to recovery. I also want all our vets out there to know that I recieved my mobilization orders for IRAQ[X(].......no set date yet just the ones that say get your stuff in order cause your going soon.[:@] Good thing the military has internet over there so I can keep up with the thread. Well I hear the charger beeping so I'll give a report tomarrow.

SPUDs out .........see ya.....:D

RE: U-Can-Do 3d 46?
 

:)Man Spud...Good luck on all accounts
Thanks
Barry

RE: U-Can-Do 3d 46?
 

thanks Spud for the comments, and when ya go well be with ya, stay in touch;)

RE: U-Can-Do 3d 46?
 

Spud, Iraq? [X(] Oh man! You'll be in our thoughts and prayers that's for sure. They probably don't even have nitro over there. Well we hope you don't have to be over there too long....... [&o]