dingawing

Help ---Has anyone flown this plane with an os 1.08 fsr? I scanned the thread and havn't seen any info .. I just got a new 1.08 and the manufacturer specs call for this engine size. Will it fly?

tailskid

My Feedback: (34)

That would be my engine of choice! Go for it....

Jerry

dingawing

Thanks Tailskid. Any advice is really appreciated. This will be my first bipe and my next purchase since Vectorflight went off the air. I've been flying their extra 66" and the Sukhoi, both of which are unbelievably fine flying aircraft. I'm gradually working myself into larger planes and I thought this would be a good start. I am really interested in smooth pattern flying--not 3-D. If the 1.08 will do the job then I'll go with it.

MadDog35

My Feedback: (77)

Look up just a little farther and you will see my thread on the 1.08 and pictures of it in my m12. Fits really nice and clean and its a killer engine. Nice weight to power.

dingawing

Thanks MadDog. I went back and read your threads and I guess the next thing I do is order this bird. Could you tell me where you got the muffler? Tower doesn't carry this brand but if its any different from a Bisson pitts I'd like to know the difference.

mugenkidd

My Feedback: (94)

If anyone wants to get rid of their decal "Pitts model 12 monster" that came with the kit please send me a PM. Thanks

Michael

Lowlevlflyer

My Feedback: (3)

Okay... I'm almost ready for a maiden with my Pitts, just in the process of setting up the radio gear now. I went with Hitec 645MG servos on the ailerons, two 5625's on the elevators, and a 5645 on the rudder. My question is, are the heavy duty nylon servo arms going to be enough on this plane, or do I need to get some aluminum ones?

v-snap

My Feedback: (18)

Heavy duty nylon should be fine....

raptorjockey

My Feedback: (17)

All right guys, I just got my Pitts S12 this week. I have ordered a Brison 2.4 for it. Is this engine going to work for this Monster? Or is it going to be too heavy? Feedback please....

Lowlevlflyer

My Feedback: (3)

You are almost going to have to relocate rudder and elevator servos to the tail from to get it to balance with a gasser like the Brison, from what I've read here. I just finished doing the weight and balance on my Pitts (OS 1.60FX with Bisson pitts muffler) and I got it to balance after putting my 2700Mah battery pack on the deck behind the canopy. This plane builds nose heavy to begin with, and a gasser just adds to the problem. I would have LOVED to have gone gas on this one, but the hassle of moving servos and such just wasnt worth it to me. Besides, I just ran this OS 1.60 for the first time about 30 minutes ago, and it is a powerhouse!!

cadconversions

My Feedback: (21)

raptor, I think you went too big on the gasser. Look at the MVVS 26cc (1.6). Weight is much better and power is more than enough.

raptorjockey

My Feedback: (17)

Well, it sounds like I just washed $500 down the drain!!!! How much does the MVVS 26cc sell for? Where is a good place to look for them?
Thanks,
Neal

cadconversions

My Feedback: (21)

Pick up the MVVS 26 from Pe Rievers at www.mvvs-nl.com He's $100 cheaper than anyone and can get it to you as quick as anyone in america. He's on the support forums on here as well and really stands behind the motors. I think with the current exchange rates it's around $325 for the motor. Cancel the brison order or send it back if you've already received it. The MVVS is also beam mounted so it's really easy to install.

cadconversions

My Feedback: (21)

Oops, just checked. 251.26 Eur = 304 USD Even cheaper.

juanes1969

sorry to butt in the thread guys... if you want a gasser for this plane, can a RCS180 do the job? it´s a 30cc and puts out 4 HP and with a 20x8 menz S at 21.50 static thrust. It weights 3.5 Lbs with ignition.
do you guys think it would be enough power for this Monster?

cadconversions

My Feedback: (21)

More than enough power but too heavy. I originally purchased a Roto 35vi for the plane and then went the MVVS 1.6 because of the weight. However, I think you can make the RCS180 work for the plane with relocating some servos, etc..

dingawing

Talking about servos, I could use some technical advice. I just got this plane and haven't started working on it yet,but in reading through the manual I was surprised to see a split Y pushrod coming off the end of a wooden dowel for the elevator control on a plane of this size. The last time I used this set-up was on the World Models Velox R-2, and I had some problems with differential on each half if the rod was not perfectly centered...the servo arm arc would swing the dowel side to side and it would throw the movement of each half of the elevators slightly off.
My question is.. instead of a single 100 oz/in servo,would it be feasible to install 2 separate lower torque servos such as hi-tec HS635HB which develops 69 oz/in. You would be delivering almost 140 oz/in to the elevator but it would be split. Could this cause a problem with handling in flight?

cadconversions

My Feedback: (21)

Nope, that would work fine and has been done already. I'm really thinking about going that route as well.

dingawing

Thanks cadconversions for your input. I'll have to spend some more time in this forum to see how other systems were set up. I'm thinking of a rod in tube but then i'd probably have to glue in some supports on the fuse formers. Any other suggestions would be appreciated.

cadconversions

My Feedback: (21)

My plane is to purchase a roll of matching covering and install two servos in the tail with direct linkages. Anyone want to split a roll?

dingawing

Cad, I don't think I want to do major surgery in the tail section. If I am using a 1.08 engine to keep it balanced I would rather mount the two elevator servos alongside the rudder servo and mount the motor servo on a separate box or ply mount. (this also saves me money on extra covering material). As soon as I can clear out some space in the garage I'm going to start putting this beauty together.

cadconversions

My Feedback: (21)

I was thinking you were going gas. Yep, with the 1.08 I would do two elevators on each side of the rudder servo and relocate the throttle servo.

Lowlevlflyer

My Feedback: (3)

dingawing,
I have my elevator servos installed EXACTLY the way you have described, and it works fine. I have two Hitec 5625 digitals, one on either side of the rudder servo, and I used carbon fiber pushrods. The only thing I had to do was cross the pushrods over to opposite sides (left servo controls right elevator half, etc.) I relocated my throttle servo up onto the motor box on the firewall.

MadDog35

My Feedback: (77)

Yes 2 servos would work nicely as you mentioned on either side of the rudder but maybe you are being a little too carefull. I agree that the stock set up is not awesome but it is not bad either. Maybe fly it stock first and if you are not happy change it. Remember this is not a 3d plane and no one has complained about the set up yet. You are being wise using the 1.08 and saving weight to power so why add a servo which is just adding weight for something that does not seem to be a problem. If you want to change it and save the weight why not go with pull pull, this would be a simple fix and a no brainer. My Dave Patrick 1.20 arf is set up stock like this and im very happy with it. You only need one server and can run double lines to either side of the servo arm. This works great and you also save the weight of the control rods. Good luck and I will get that muffler brand for you, sorry to lazy to walk downstairs lolz.

cleonard

My Feedback: (1)

Guys, I used the standard setup, with the exception of putting a brace about halfway back, in the fuselage. I used a piece of 1/4 inch balsa, drilled a hole in it, slipped it over the pushrod and then slid the pushrod in place. I connected it to the servo, and then slid my hand inside the back of the fuse and CA'd the brace to the 2nd bulk head. That keeps it from swinging side to side, and stiffened up the elevator to the point that there is no deflection in either the up or down position. Checked it with a throw meter and both sides are moving equally. The plane has about 30 flights on it from last summer, and the method worked fine.