Profile PT 25
#1
Thread Starter

My Feedback: (1)
Joined: Dec 2001
Posts: 838
Likes: 0
Received 0 Likes
on
0 Posts
From: Lakeland,
FL
I started my Profile PT 25 Friday afternoon. I am building it at Frank Tiano's place as he is on vacation.. I believe it can be build in just a few days.
Fuselage is built and some paint on it. Had it on gear.. I may put an OS 10 in it as I have one setting around.. I would like to go electric but to cheap right now to spend $76 for the AXI I want. Try a get a picture soon..
Anyone else building there's.
Jim
Fuselage is built and some paint on it. Had it on gear.. I may put an OS 10 in it as I have one setting around.. I would like to go electric but to cheap right now to spend $76 for the AXI I want. Try a get a picture soon..
Anyone else building there's.
Jim
#2
Member
Joined: Oct 2004
Posts: 32
Likes: 0
Received 0 Likes
on
0 Posts
From: Bartlett,
TN
Not sure which AXI motor you were looking at, but I tried a 2808-20 on mine and I just wasn't real happy with that combo. The E-Flite Power 15 and a 3 cell 3150 mah battery with a APC slo-flyer 11 x 3.8 prop works really well on this model.
Mark
Mark
#3
Thread Starter

My Feedback: (1)
Joined: Dec 2001
Posts: 838
Likes: 0
Received 0 Likes
on
0 Posts
From: Lakeland,
FL
Mark,
Yes I was looking at the 2808 AXI.. I tryed to look at the one you are using but couldn't really find it.. I looked for E-Flight 15 and couldn't find it listed..
Do you have a site for the 15 size motor.
JIm
Yes I was looking at the 2808 AXI.. I tryed to look at the one you are using but couldn't really find it.. I looked for E-Flight 15 and couldn't find it listed..
Do you have a site for the 15 size motor.
JIm
#4
Member
Joined: Oct 2004
Posts: 32
Likes: 0
Received 0 Likes
on
0 Posts
From: Bartlett,
TN
Jim,
Try this link:
http://www.horizonhobby.com/Products...odID=EFLM4015A
The street price is $79.99 I bought mine at our local hobby shop for $74.99
Also, I am using a Castle Phoenix 35 controller.
Mark
Try this link:
http://www.horizonhobby.com/Products...odID=EFLM4015A
The street price is $79.99 I bought mine at our local hobby shop for $74.99
Also, I am using a Castle Phoenix 35 controller.
Mark
#5
Thread Starter

My Feedback: (1)
Joined: Dec 2001
Posts: 838
Likes: 0
Received 0 Likes
on
0 Posts
From: Lakeland,
FL
Made 2 flights today on my PT Profile.. I am usinf a wet engine.. An OS .10. It pulled it very slow as we had no wind here today. The OS 10 was a little peaked so I have changed that engine out to an OS 15.. May try to fly it again Friday..
Anyway I did hand launch today as our field grass is about 4" tall in the low spots. Taller everywhere else.
This has to be the smoothest flying of all the PT series of Autogyros. I just gave it a toss and flew it around a few times. Did make one chick of ailron and that ws it.. I got some pictures and one flying but my Photographer was not used to my Digetal Camera
Now I have most of the PT Gyro's to take to Morris,IL.
Jim
Anyway I did hand launch today as our field grass is about 4" tall in the low spots. Taller everywhere else.
This has to be the smoothest flying of all the PT series of Autogyros. I just gave it a toss and flew it around a few times. Did make one chick of ailron and that ws it.. I got some pictures and one flying but my Photographer was not used to my Digetal Camera
Now I have most of the PT Gyro's to take to Morris,IL.
Jim
#6
Hi Jim,
Your Profile looks great! I have put it in the "customer gallery" of our website.
Let us know how it performs with the glow .15
The roll control arm is reversible (and field replaceable). We did this so that you can put all of the servos on the same side for a glow conversion.
This would move the servos out of the exhaust gas path. Your option.
See you in Morris in September!
John
Your Profile looks great! I have put it in the "customer gallery" of our website.
Let us know how it performs with the glow .15
The roll control arm is reversible (and field replaceable). We did this so that you can put all of the servos on the same side for a glow conversion.
This would move the servos out of the exhaust gas path. Your option.
See you in Morris in September!
John
#7
Thread Starter

My Feedback: (1)
Joined: Dec 2001
Posts: 838
Likes: 0
Received 0 Likes
on
0 Posts
From: Lakeland,
FL
John,
I took the PT Profile to a hard surface field and did some ROG. Slight breeze, the rotor spun up good, when straight down the runway and just when up very smoooth.. I now see why the 1/32 shim is put on the hub, but had to question it. The OS 15 pulls it right along.. I tryed an APC 8x6 and it did not like it so I used a Master Airscrew 8x4 and that was better.
I did make a bad landing and the Hitec 125MG stripped (Looked like Aluminum) so I replaced it for now with a full sized MG.
May get in small flights later today depending on storms in the area.
Jim
I took the PT Profile to a hard surface field and did some ROG. Slight breeze, the rotor spun up good, when straight down the runway and just when up very smoooth.. I now see why the 1/32 shim is put on the hub, but had to question it. The OS 15 pulls it right along.. I tryed an APC 8x6 and it did not like it so I used a Master Airscrew 8x4 and that was better.
I did make a bad landing and the Hitec 125MG stripped (Looked like Aluminum) so I replaced it for now with a full sized MG.
May get in small flights later today depending on storms in the area.
Jim
#8
I just ordered my kit the other day... looking forward to it. I would like to use a brushless/3S lipo combo. My LHS carries AXI motors.. so how aggressive is the 2808 for this bird? I don't want it too overpowered, just a little to help climb out of a hairy-carry situation if necessary. I'm not terribly smart on how to pick out motors and props yet and I would venture to say that auto's have slightly different requirements compared to a fixed wing bird for similar weight. Also, what servos are ideal/work well with this model?
Jim, perhaps you could convince Frank to have some autogyro flight action in next year's Top Gun show. I was there this year (only on Friday) and didn't see any glimpse of auto's there. I think if they had some exposure at a major event like that there would be more interest and more kits available.
Jim, perhaps you could convince Frank to have some autogyro flight action in next year's Top Gun show. I was there this year (only on Friday) and didn't see any glimpse of auto's there. I think if they had some exposure at a major event like that there would be more interest and more kits available.
#9
Member
Joined: Oct 2004
Posts: 32
Likes: 0
Received 0 Likes
on
0 Posts
From: Bartlett,
TN
I can save you a lot of frustration. Look at this thread about 7 posts back... I tried a AXI 2808-20 and I just wasn't happy with it. I suggest you purchase a E-Flite Power 15 motor (Horizon hobby), 3150 mah 3 cell lipo battery from Common Sense R/C, a Castle Phoenix 35 speed controller, and use a APC 11 x 3.8 slo-fly prop. This combo works! You will get a solid 10 minutes of flying with a little reserve. Your local hobby shop can get E-Flight motors. Street price is $80, I bought mine for $75 locally....
Enjoy!!
Mark
Enjoy!!
Mark
#11
Thread Starter

My Feedback: (1)
Joined: Dec 2001
Posts: 838
Likes: 0
Received 0 Likes
on
0 Posts
From: Lakeland,
FL
Got the grass cut this week and have been flying off the grass now. Some of the members said you can't get off the ground as there is no wind.. It just spun up and away it went. No problem.
Now I will have enough Autogyros to crash 2 a day and still have some left over, when we go to Morris,IL. in September.
Jim
Now I will have enough Autogyros to crash 2 a day and still have some left over, when we go to Morris,IL. in September.
Jim
#12
Thread Starter

My Feedback: (1)
Joined: Dec 2001
Posts: 838
Likes: 0
Received 0 Likes
on
0 Posts
From: Lakeland,
FL
I don't normally modify my Autogyro's but was having trouble telling which way my PT Profile was going so I thought I would add a wing so that maybe I could track it better.
Made 2 flights with it today in bad sky conditions. Landed safely each time. Not sure if I will keep it the way it is or trim it a little.
Jim
Made 2 flights with it today in bad sky conditions. Landed safely each time. Not sure if I will keep it the way it is or trim it a little.
Jim
#14
I am wondering if you can help me with some info? I am just starting to build a PT-25, and the directions are not clear at all about the "blade shims". The only mention of the shims is in the rotor sub-assembly directions, and the text says only this: "If you want to use the blade shims, glue them in place now." There is no other mention of the blade shims anywhere else in the directions, (that I can find). It would seem to me that the blade shims set the proper blade incidence, and they would be required, not optional. Since there are no other specifics about them, I am hesitant to go ahead and mount them, for fear of doing it incorrectly. Any assistance you can offer would sincerely be appreciated.
Thanks,
Joseph
Thanks,
Joseph
#16
Joseph...
Adding to what Joel has replied.....the PT-25 doesn't need 'shims'. However, to clarify what is meant: In some cases if the rotor doesn't spin up with taxiing into the wind, putting 1/64" shims at the trailing edges of the rotor hub tangs will usually help. Start with 1/64 then if need be go to 1/32. However, the PT-25 comes with the SG6042 airfoil blades and as Joel says, these don't usually need any shims. The shims simply give each blade a bit of negative angle of attack, which helps getting the rotor to spin. However, too much negative angle of attack will cause the rotor to have less lift. This all has to do with getting the rotor into "autorotation".
Hope this helps.
Bill
Adding to what Joel has replied.....the PT-25 doesn't need 'shims'. However, to clarify what is meant: In some cases if the rotor doesn't spin up with taxiing into the wind, putting 1/64" shims at the trailing edges of the rotor hub tangs will usually help. Start with 1/64 then if need be go to 1/32. However, the PT-25 comes with the SG6042 airfoil blades and as Joel says, these don't usually need any shims. The shims simply give each blade a bit of negative angle of attack, which helps getting the rotor to spin. However, too much negative angle of attack will cause the rotor to have less lift. This all has to do with getting the rotor into "autorotation".
Hope this helps.
Bill



