KMP PITTS 12
09-26-2007, 06:43 AM
#1
KMP PITTS 12
Hi Guys,
I just bought a kmp pitts 12 from a friend and was wondering what engine would be suitable for this aircraft. I dont fly 3D, so I am looking for a reasonably powered aircraft. I was leaning towards OS 120 AX 2 stroke. Please let me know what you guys have used on this aircraft.
Thanks
Asif
I just bought a kmp pitts 12 from a friend and was wondering what engine would be suitable for this aircraft. I dont fly 3D, so I am looking for a reasonably powered aircraft. I was leaning towards OS 120 AX 2 stroke. Please let me know what you guys have used on this aircraft.
Thanks
Asif
09-28-2007, 10:20 PM
#2
RE: KMP PITTS 12
Asif,
I just bought one and have a Zenoah G38 that I am going to put in. I think you would be disappointed with the OS 120. Not enough power. A 25cc 2 stroke or 32 to 40 gasser would be the right choice.
Regards,
Dan
I just bought one and have a Zenoah G38 that I am going to put in. I think you would be disappointed with the OS 120. Not enough power. A 25cc 2 stroke or 32 to 40 gasser would be the right choice.
Regards,
Dan
09-29-2007, 01:00 AM
#3
RE: KMP PITTS 12
Dan,
Thanks for your reply. I have came to realize that OS 120 AX 2 stroke will not be a good choice for KMP pitts 12. I am now leaning toward SPE 26 cc gas enigne, these are chinese made engines. My local hobby shop either has SPE 26 or Zenoah G20... I guess G20 is same cc as OS 120.
ASif
Thanks for your reply. I have came to realize that OS 120 AX 2 stroke will not be a good choice for KMP pitts 12. I am now leaning toward SPE 26 cc gas enigne, these are chinese made engines. My local hobby shop either has SPE 26 or Zenoah G20... I guess G20 is same cc as OS 120.
ASif
09-29-2007, 04:12 PM
#5
RE: KMP PITTS 12
The plane is tail heavy and needs the added weight in the nose so the G38 is a good choice. The spe26 is kinda small. I think it would still be underpowered. Go to the larger SPE, you won't regret it.
Dan
Dan
09-30-2007, 03:28 PM
#8
RE: KMP PITTS 12
Braindr,
I just got my model today. the consturction is solid... therefore I feel it is not a light weight airframe. YT Inrtnational / KMP have done a good paint job on fiberglass fuse. This tail group and wings are very well made. Keep in mind pitts is an aerobatic aircraft not a 3D machine. I havent started building but I guess it will turn out to be a good model. One thing is for sure.... this aircraft looks great!!!!
Asif
I just got my model today. the consturction is solid... therefore I feel it is not a light weight airframe. YT Inrtnational / KMP have done a good paint job on fiberglass fuse. This tail group and wings are very well made. Keep in mind pitts is an aerobatic aircraft not a 3D machine. I havent started building but I guess it will turn out to be a good model. One thing is for sure.... this aircraft looks great!!!!
Asif
09-30-2007, 03:36 PM
#9
RE: KMP PITTS 12
Dan, you are right. I got my model today and apparently it will be a tail heavy model. Though it is built well but it is not a light weight model.
I saw the video of pitts 12 on kondor's website which was flown with a 40cc engine and now I realize that 32cc-40cc should be the choice of engine. I also got my SPC 26 today which I will exchange for SPC 40.
So when do you expect to test fly youe model?
Asif
I saw the video of pitts 12 on kondor's website which was flown with a 40cc engine and now I realize that 32cc-40cc should be the choice of engine. I also got my SPC 26 today which I will exchange for SPC 40.
So when do you expect to test fly youe model?
Asif
09-30-2007, 09:31 PM
#10
RE: KMP PITTS 12
Asif,
My model needs a little work. It was the one featured in MAN March 07. It has a little wing damage that I need to repair. I bought all new servos for it and am expecting some new covering from KMP. It should be ready in a couple weeks.
I bought a new spinner but it was too small. I'm going with a Tru Turn 3.5" . Can't wait to fly this bird. Should be nice.
Dan
My model needs a little work. It was the one featured in MAN March 07. It has a little wing damage that I need to repair. I bought all new servos for it and am expecting some new covering from KMP. It should be ready in a couple weeks.
I bought a new spinner but it was too small. I'm going with a Tru Turn 3.5" . Can't wait to fly this bird. Should be nice.
Dan
10-01-2007, 02:15 AM
#11
RE: KMP PITTS 12
Dan,
I just went over the manual, and there is a lot to be done to finish this model. Hopefully I'll start my model tonite!!! Regarding servos, do you think Jr 811 digital servos ( 50oz torque) on ailerons should be fine? I have 4 servos that if can install if the torque seems right for the application.
I am also going with tru turn 3.5" spinner that I have spare from my DMP ultimate!!
Asif
I just went over the manual, and there is a lot to be done to finish this model. Hopefully I'll start my model tonite!!! Regarding servos, do you think Jr 811 digital servos ( 50oz torque) on ailerons should be fine? I have 4 servos that if can install if the torque seems right for the application.
I am also going with tru turn 3.5" spinner that I have spare from my DMP ultimate!!
Asif
10-01-2007, 02:30 AM
#12
RE: KMP PITTS 12
Dan,
What color scheme si your pitts. I bought white, red, blue and yellow color scheme (not the oracle) but when I opened the box this Pitts was neither Orcale nor the other color scheme. I guess this is a 3rd color scheme. It is the same color scheme as Goldberg Pitts, but the yello is more of "cub yellow." Not what I had expected but looks good!!! Beside I have no choice, this was the only pitts imported im Pakistan!!!!
Asif
What color scheme si your pitts. I bought white, red, blue and yellow color scheme (not the oracle) but when I opened the box this Pitts was neither Orcale nor the other color scheme. I guess this is a 3rd color scheme. It is the same color scheme as Goldberg Pitts, but the yello is more of "cub yellow." Not what I had expected but looks good!!! Beside I have no choice, this was the only pitts imported im Pakistan!!!!
Asif
10-01-2007, 04:23 AM
#13
RE: KMP PITTS 12
Dan,
Contrary to what you and I are discussing, I have seen a video of Carl Goldberg video on youtube. This guy flew CGM Pitts with os 160 Fx, and it flew pretty good. YT / KMP pitts is slightly bigger and I guess same weight range. So a 26cc gas engine should fly it fine.
Asif
Contrary to what you and I are discussing, I have seen a video of Carl Goldberg video on youtube. This guy flew CGM Pitts with os 160 Fx, and it flew pretty good. YT / KMP pitts is slightly bigger and I guess same weight range. So a 26cc gas engine should fly it fine.
Asif
10-01-2007, 08:44 AM
#14
RE: KMP PITTS 12
The OS160 glow is about 26cc and VERY powerful. It's equal in power to a 35 to 40cc gasser.
I'm putting in hitec hs645mg for the tail and elevator. I bought hs475 karbonite for the 4 servos in the wings, but now I'm having second thoughts on them. They shoud have enuff power since the surfaces aren't that large but I think I might go metal gear. I just crashed a plane last weekend because I put weak servos in on the ailerons and stripped the plastic gears to shreds.
So you're in India. I deal with alot of people over there.. Outsourcing IT stuff, projects, etc. Send me some pics of your model when you're up in the air.
Regards,
Dan
I'm putting in hitec hs645mg for the tail and elevator. I bought hs475 karbonite for the 4 servos in the wings, but now I'm having second thoughts on them. They shoud have enuff power since the surfaces aren't that large but I think I might go metal gear. I just crashed a plane last weekend because I put weak servos in on the ailerons and stripped the plastic gears to shreds.
So you're in India. I deal with alot of people over there.. Outsourcing IT stuff, projects, etc. Send me some pics of your model when you're up in the air.
Regards,
Dan
10-01-2007, 09:31 AM
#15
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RE: KMP PITTS 12
Braindr,
Depending on your altitude and your flying style, A Saito 180 should be more than enough for that plane. I think a Saito 220 would be overkill. I just picked up a good deal on an older, but recently sent back to YS for refurbishing, YS140FZ with a brand new Slimline Pitts style smoke muffler from a local hobby shop that is closing. I have been considering getting one of these planes since I saw the review in MAN and the YS should haul it around just fine and it should look great with a smoke trail
. Good luck with your plane. Let us know what you decide to go with.
Fly safe and have fun!!
David
Depending on your altitude and your flying style, A Saito 180 should be more than enough for that plane. I think a Saito 220 would be overkill. I just picked up a good deal on an older, but recently sent back to YS for refurbishing, YS140FZ with a brand new Slimline Pitts style smoke muffler from a local hobby shop that is closing. I have been considering getting one of these planes since I saw the review in MAN and the YS should haul it around just fine and it should look great with a smoke trail
. Good luck with your plane. Let us know what you decide to go with.Fly safe and have fun!!
David
10-01-2007, 09:50 AM
#16
RE: KMP PITTS 12
I agree with hrrcflyer. If staying with glow Saito 180 is perfect. You need to transfer batteries and all the weight you can to front of fuse if using the 180.
These are all good choices:
OS160 - 2 stroke
Saito 180 - 4 stroke
Gasser 35 to 40cc (Zenoah g38 (no added weight needed due to heavy flywheel), Brison 2.4, ZDZ 40 )
I guess it all depends on your type of flying preferences. ZDZ has a great chart on thier website for engines vrs flying types.
Dan
These are all good choices:
OS160 - 2 stroke
Saito 180 - 4 stroke
Gasser 35 to 40cc (Zenoah g38 (no added weight needed due to heavy flywheel), Brison 2.4, ZDZ 40 )
I guess it all depends on your type of flying preferences. ZDZ has a great chart on thier website for engines vrs flying types.
Dan
10-02-2007, 02:12 AM
#17
RE: KMP PITTS 12
Dan,
I am not a big fan of gas engine because I dont have gas setup... I fly glow engines only. The reason I am avoiding OS 160 is because my past experience was not a very good one. I had OS 160 with bisson pitts muffler and I sold it because I was not getting reliable performance. I guess the issue might have been bisson muffler. At extended idling the engine would quit due to insufficient back pressure. I found out the solution to this problem after I sold the aircraft!!
Saito are good engines but 4-stroke are not my cup of tea!! Not a pleasant experience with 4 strokes!! I have once tried a gas engine not too long ago when I use to live in USA. I had quiqui somenzini YAK 84" with DA 50. Very nice setup... I loved it.
Here in Pakistan it hard to get DA engines and there were issues with getting part on regular basis. ZDZ, and DL, are popular choice and newly introduced SPE engine. I will the first one to try SPE enines in Pakistan... that why I am little hesitant. But still I am going ahead with SPE 40cc and giving it a shot!!!!!!!!!!!
Asif
I am not a big fan of gas engine because I dont have gas setup... I fly glow engines only. The reason I am avoiding OS 160 is because my past experience was not a very good one. I had OS 160 with bisson pitts muffler and I sold it because I was not getting reliable performance. I guess the issue might have been bisson muffler. At extended idling the engine would quit due to insufficient back pressure. I found out the solution to this problem after I sold the aircraft!!
Saito are good engines but 4-stroke are not my cup of tea!! Not a pleasant experience with 4 strokes!! I have once tried a gas engine not too long ago when I use to live in USA. I had quiqui somenzini YAK 84" with DA 50. Very nice setup... I loved it.
Here in Pakistan it hard to get DA engines and there were issues with getting part on regular basis. ZDZ, and DL, are popular choice and newly introduced SPE engine. I will the first one to try SPE enines in Pakistan... that why I am little hesitant. But still I am going ahead with SPE 40cc and giving it a shot!!!!!!!!!!!
Asif
10-02-2007, 04:30 AM
#18
RE: KMP PITTS 12
David, and Dan,
Here is something intresting I found on RCMF forum website
http://www.rcmf.co.uk/4um/index.php/topic,21467.0.html
You have to be member to view the thread. Sign in and become a member, because there are lots of information regarding KMP/ YT international Pitts.
Please read following comment of someone who flew his pitts with ZDZ 40 cc. This is what he has to say:
"One major point take no notice of the C of G in the instructions, I checked this out with Dave Stephens who flew the prototype and his C of G is 7 1/2" from the leading edge of the top wing and the instructions say 4" I set mine to 6 1/2". So go with 6 1/2" to 7 " from the pointy bit on the leading edge pf the top wing."
So be careful with you CG
Asif
Here is something intresting I found on RCMF forum website
http://www.rcmf.co.uk/4um/index.php/topic,21467.0.html
You have to be member to view the thread. Sign in and become a member, because there are lots of information regarding KMP/ YT international Pitts.
Please read following comment of someone who flew his pitts with ZDZ 40 cc. This is what he has to say:
"One major point take no notice of the C of G in the instructions, I checked this out with Dave Stephens who flew the prototype and his C of G is 7 1/2" from the leading edge of the top wing and the instructions say 4" I set mine to 6 1/2". So go with 6 1/2" to 7 " from the pointy bit on the leading edge pf the top wing."
So be careful with you CG
Asif
10-04-2007, 09:30 AM
#20
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RE: KMP PITTS 12
Hey, I just ordered the KMP pittts as well from Chief. Should be here tomorrow. As for the CA hinges... I have had good luck with them on models up to this size if installed correctly. However they are always subject to cracking or fatigue over time. The robarts would outlast the model for sure. I would'nt use the CA hinges that came with the kit unless you feel they are of good quality. At a minimum you may want to upgrade the rudder and elevator. These surfaces will see the most load/stress.
Anyhow, I'll post some pics of the kit once it arrives. I ordered the red Oracle scheme. Still not sure on the motor. I have a Moki 1.80 in the shop but I think a small Gasser would be better. Gas is so much less hassel! Clean planes!!!!!!! IMO..
Anyhow, I'll post some pics of the kit once it arrives. I ordered the red Oracle scheme. Still not sure on the motor. I have a Moki 1.80 in the shop but I think a small Gasser would be better. Gas is so much less hassel! Clean planes!!!!!!! IMO..
10-04-2007, 12:55 PM
#23
RE: KMP PITTS 12
Although the Ca hindge are of very good quality, I planning to install either robart hinge, or dubro hinge.... by the way the kit comes with robart hinge for rudder.
I am done installing landing gear, wheel spats, rudder, elevator. Lower wings are installed and aligned. I just glued top wing. Now I need to work on rudder elevator servo installation.
After much thought and debate, I have decided to install OS 160 instead of SPE 40cc gas engine.
will post some pictures tomorrow!!!
Asif
I am done installing landing gear, wheel spats, rudder, elevator. Lower wings are installed and aligned. I just glued top wing. Now I need to work on rudder elevator servo installation.
After much thought and debate, I have decided to install OS 160 instead of SPE 40cc gas engine.
will post some pictures tomorrow!!!
Asif