RE: Showtime
 

Hi,

You are 100% correct but are also 100% wrong... read my post I am talking about the length from the front of the drive collar to the back of the carb. In my original post I was talking about having to hack the cowl and firewall to get the FA-125 to fit into the ST.

Flip over and out!!!

p.s. please dont take these comments out of context, I am not flaming you in any way...

RE: Showtime
 

yes, i did read it. i was saying i suspected it was longer to offset the leverage of a larger crank to put it short IMO.. sorry for the long confusing post.. 1 too many beers;)

RE: Showtime
 

thank you for my new signature:D

RE: Showtime
 

and they say this is not educational[sm=lol.gif]

RE: Showtime
 

Here is a picture showing how I pinned my landing gear in. I used two triangle pieces of stock as reinforcement to help it from rolling under and out. On the sides I drilled three holes and ran dowels through and epoxied them in place. It might be slightly overkill but I would much rather spend two weeks flying my showtime rather than spending that quality time fixing it again after the gear falls out and tears apart my plane. I hope this is somewhat helpful for all of you.

ME

RE: Showtime
 

No problems Drum... I often have one two many myself!

RE: Showtime
 

Hey Barry C, How many turns out are your YS110's set at? I put a 120 on my showtime and it idles great but dies a little over 1/2 throttle. I'm going to replace the plunger, diaphram,and gasket. My YS has been stored for years so I imagine it need a pump tune up. Thanks SD

RE: Showtime
 

Hey Mr Tork!


When are you going to share your settings with us lesser skilled pilots?

There seems to be some controversy about elevator settings........why don't you "set" us straight???:)


Thanks,
Magoo

RE: Showtime
 

folks,

I found the "deadspot" that everyone is talking about and here is what I have seen so far and can recreate it at will.

I flew at least 5 flights on saturday with them on and found the deadspot during the first flight. The only difference from when I said I did not see it until now is my YS swallowed the exhaust valve so I installed an OS108 anda 16X4W prop. The YS110 had a 17X4W prop, perfect match btw...

I was very slow, in a low alpha knife edge. I then applied more rudder/power to raise the nose into high alpha KE and it slowly started pulling to the canopy . I gave it down elevator to stop the pitch and had no elevator control. I increased throttle a tiny bit more and had elevator control immediately. But by this time it had gone to far and I was pretty inverted so I just flew out of it. This happened both left and right KE and was able to recreate it several times. Power always seemed to allow me to fly right out of it. Going straight into a high alpha KE was no problem as I had power in already and backed off to get the angle I wanted.

I'm gonna fly it again and try and get someone to video it for me so it can be analyzed better. WX is supposed to be questionable until this next weekend so it may be some time until I can do this

My setup is

OS108
APC 16X4W
CG 8

The CG may account for it not happening on approach since I was using a faster than normal approach anyway, not that this thing has to land very fast at all. As a matter of fact, It does nice harrier type landings and slows to a crawl for normal stuff, but my approach was steeper than normal since I had to keep speed up to counter the wind we had.

Not once did it try to snap out during the KE tests, it would roll out slowly in most cases but it would not "suddenly" snap out. So in my opinion, if you can keep airflow over the elevators, then the problem will not exist. I'm thinking of a higher diameter prop with the same 4W pitch would solve this quite well.

Hopefully the YS110 will be back from YS soon and I can really get back to having fun and use my 17X4W prop which is the engine/prop combo I had on it when I first made the statement about not seeing it. I like the 1.08 but it is lacking a little bit, but it is brand new so it's not quite broken in yet.

All in all, I'm liking this plane the more I fly it....:D

RE: Showtime
 

Weird... I flew mine a bunch this morning... and mine pitch couples ever so slightly to the belly in KE........


very odd....

but I think this will be a great plane to practice IMAC... tracks very true for me

RE: Showtime
 

After many, many flights I finally figured out what was causing the snap and now that I know what it is I can't believe I never thought to look at it before. if you plane is snapping go check to make sure your rudder is trimmed straight. (I know, sounds stupid, doesn't it?) I can now tell you with all certainty that is what is causing it. if it is just slightly off it changes the deflection off the elevator to whatever side it favors and drops the wing because the elevator on the one side has no authority anymore. I am shocked that I never went over the basics before I tried to tackle all the complicated fixes. Also, if the springs on the tail wheel don't have the same tension on either side, it will cause this as well. Hopefully this will help all of you out that are experiencing this problem.

ME

RE: Showtime
 

Exeter,

I just rechecked my CG, it's at 8 inches not 5 1/2... DOH....

A blast of power straightens it right out. In every case, I moved the elevator and had no control over it. I did check my elevators to see if they were moving exactly the same and at the same time and no problem there. I know the roll could be the ailerons, but I had roll control but no pitch control at all. I tried to roll it level and add elevator at the same time and had nothing. It's possible I was in the "spot" where the SFG's were blocking some airflow over the elevators. I will go over the rest of the setup to verify I have everything else correct

Now I had none of what I described with the SFG's off.

I agree, for practicing IMAC, with the right power combo it's a beauty. Other than what I described, you are correct, it tracks well and is not bothered at all by the wind.

I'm not overly concerned by the issue. I know it's there and where it happenes so I can "fly" around it. I did notice that my SFG's seems to fit better when on upside down (purple on top). The leading edge of the SFG's do not sit completely flat on the wing with the white one on top but sit perfectly with the purple on top. I'm wondering if this may be causing the problem I am seeing in KE as I suspect they would be moving under load more than if they were seated against the wing

Now as far as other flying it's a sweetie, looks great in the air, hovers way better than the F90 ever did, inverted flat spins that rival an Ultimate, waterfalls that did not lose altitude, elevators that were solid inverted and a very slight rock upright and more than enough rudder for anything requiring it. With the SFG's on, a KE loop is easy to do if you have the power to pull it through but in my case I could not get it to slow in KE.

As far as I'm concerned, it's a keeper

RE: Showtime
 

Keeper? Yep... ain't that the truth....

interesting comment though... I have not flown mine WITH the SFG yet??

Bubba...is the dead spot only with the SFG installed, or does it happen without them too"??

Will try to fly again in the next few days....
but tomorrow is reserved to maiden my 85" QQ Yak 54!!!!!

RE: Showtime
 

Only with them on. No problems at all without them

I'm interested in what ItsShowtime found, has possiblities

RE: Showtime
 

Hmmm...the SFG's must create (well....obviously they do!) a different airflow over the Ele..

I'll make sure the test in the next few days... WITH altitude!:D

RE: Showtime
 

hi all i am thinking of getting one of these now, after readding alot of good reports, just a few things need help with,YS 1.10 & 17 x 4w a good combo, an what servos is every one putting in the plane

thanks

antony

RE: Showtime
 

Basically any servo with torque > 100 Oz and METAL gear will be ok for everything else but the rudder. I recommend at least 125 on the rudder.

I have currently HS 645MG on my ailerons, and JR Sport 125 MG on the elevators and rudder. Plenty of authority to do everything I need it to do.

RE: Showtime
 

I'm using digital Hitech servos, YS 110 with 16.5 x 5 prop.

RE: Showtime
 

Josh,

If you get a chance try a .08 to .10 sec. servo on the elevators and rudder.....you won't believe the difference they make.

RE: Showtime
 

Wizone,

I'm using the Hitec 6965's on everything, plenty of power, 111 oz.in. on 6 volts and extremely fast.

Ken

RE: Showtime
 

hs-6985 all round.
no slop, 170 oz torque, fairly fast (.13), 1800 mah nimh battery.[8D]
hs-81 for throtle

RE: Showtime
 

Ok Folks I'm pretty certain the dead spot that some are seeing took out my showtime today..


Here is what happened. I was about half way through the first flight of the day and was shooting touch and goes along with the odd 3D maneuver in the middle. I was setting up for my 5th or 6th touch and go and was coming in slightly nose high, probably5 to 10 degrees and noticed I was coming in a little faster than i wanted to so I added 1/4 throttle and pulled a very small amount of elevator to climb away and all of a sudden it just dropped to the ground, pure pancake, no tip stall at all, just flat as a pancake. In the 2 or 3 seconds it took to fall out I tried to lower the nose and also raise the nose and had nothing although I could see the elevator moving and by the time it hit I was at full throttle trying to power out. The hit tore out the landing gear, broke the fuselage right at the wing tube and drove the gear up into both wings taking out the root ribs and first 3 ribs on both wings.

During my last several flights on this plane I had started to notice that on occasion during takeoff I would give it a small amount of elevator to lift the plane and nothing would happen so I would add a little bit more and all of a sudden it would takeoff and go completely vertical. Thank god for extra power as I was able to fly right out of it whenever it would happen.

During a couple of the touch and goes I did today I noticed it and never gave it a thought. But not having any elevator control on landing is really not a good thing. This plane will not be rebuilt as the damage is way too much to even worry about it.

I will say this, other than the loss of elevator control, this plane flew extremely well and was a blast but I seriously think I will not replace it.

A few of the older more experienced builders that saw this happen seem to think the stab incidence may have been off for the stabs to stall like that or possibly the main wing blocking airflow across the stabs under certain circumstances.

Throw setups were as the book suggests, all servos were 5645's except for the rudder which was a JR8611A. Engine was an OS108

All I have to do now is figure out what plane will work well with an OS108...idea's anyone

RE: Showtime
 

Bubba, really sorry to hear about the loss! That sucks. I've had two showtimes so far, and have crashed them both. (One my fault, hooked the aileron's up backwards, the second went in due to battery short and resulting lock out). On the second showtime I had about 15 flights on it and it had the same weird tendencies you are describing. I actually bought another one but haven't built it yet.(The wife says bad things happen in three's!)

Well the third one happened today! Put in my new BME Edge 540 II 30% in it's 6th flight. Dead stick after a low inverted flat spin, and couldn't make the runway! Fuse and wings are damaged beyond repair.

Good news is I ordered a QQ 85" yak today to replace the Edge and it should be here by the end of the week!

Great thing about this hobby is you can crash all you want, they'll make more!!!

BK

RE: Showtime
 

BK,

I appreaciate what you are saying and am sorry to hear about the Edge. You know what's weird. You mentioned you just ordered QQ's Yak to replce the Edge and I was just looking at the EF Yak for the OS108. I did have a YS110 in the Showtime for the maiden but on the second flight it lunched an exhaust valve so I'll have a YS110 very shortly once YS sends it back.

I was just heading over the Cheif Aircraft to look into the smaller QQ Yak when I got notice that you posted your response

I was gonna buy another showtime but I'm somewhat spooked about the dead spot thing and have been wanting a YAK anyway.

RE: Showtime
 

I have the 85" yak....it is WONDERFUL!!!

might look at QQ's smaller yak for that YS...as it seems the EF will never show up again