New Sport Jet: T-One Models Mini Fortune / Mini T1
10-15-2018, 06:54 PM
#604
My Feedback: (1)
most have complained about being very nose heavy so i feel for whatever reason this is true for my model also.
it would have been nice to just put all the batteries in the nose area like you did.
Stan
10-15-2018, 07:35 PM
#605
My Feedback: (53)
i am using the cg wizard pro to balance. I have used it on several planes before and they seemed to have worked. I have read in this thread where there was a large discrepancy in the balance point with some models.
most have complained about being very nose heavy so i feel for whatever reason this is true for my model also.
it would have been nice to just put all the batteries in the nose area like you did.
Stan
most have complained about being very nose heavy so i feel for whatever reason this is true for my model also.
it would have been nice to just put all the batteries in the nose area like you did.
Stan
10-16-2018, 03:13 AM
#607
My Feedback: (53)
I’m pretty sure the Wizard is nice as well...
10-16-2018, 05:53 AM
#608
My Feedback: (1)
i bought it mainly for big jets that i have a hard time handling by myself. It has a provision to measure angles for control surfaces. I have never used it.
10-16-2018, 06:41 AM
#609
10-16-2018, 07:16 AM
#610
My Feedback: (1)
Markusvt
I moved all 3 batteries back between the tank and fuse sides like you did. Now my cg is 193 mm.Very little left to move back, maybe my 1000 ma 2c lipo bat that is sitting above the nose wheel.
Do you know where your cg sits since you moved your batteries back?
I moved all 3 batteries back between the tank and fuse sides like you did. Now my cg is 193 mm.Very little left to move back, maybe my 1000 ma 2c lipo bat that is sitting above the nose wheel.
Do you know where your cg sits since you moved your batteries back?
10-16-2018, 07:56 AM
#612
I've got my two Fromeco 2600 mah receiver batteries over the nose gear, 2100 mah LiFe turbine battery on top of the fuel tank, K85, no smoke, my CG is around 190mm (front side of the wing tube), using two different types of Xicoy (both give the same readings) and it flies perfect there for me. I originally had the CG at 200mm with all three batteries on top of the fuel tank and it was way too squirrelly for me there, so I moved the two Fromecos over the nose.
There have been a lot of discussions on this thread about CG, which I have followed closely, and I still cannot figure out these large inconsistencies in battery placement and CG. I finally gave up trying to figure it out. My recommendation is to just get it in the ballpark (error to the nose heavy side) for the first flight, then adjust from there. I don't recommend starting with a CG of 200mm or more, especially if this is your first turbine jet.
Tom
There have been a lot of discussions on this thread about CG, which I have followed closely, and I still cannot figure out these large inconsistencies in battery placement and CG. I finally gave up trying to figure it out. My recommendation is to just get it in the ballpark (error to the nose heavy side) for the first flight, then adjust from there. I don't recommend starting with a CG of 200mm or more, especially if this is your first turbine jet.
Tom
10-16-2018, 09:51 AM
#614
My Feedback: (1)
I've got my two Fromeco 2600 mah receiver batteries over the nose gear, 2100 mah LiFe turbine battery on top of the fuel tank, K85, no smoke, my CG is around 190mm (front side of the wing tube), using two different types of Xicoy (both give the same readings) and it flies perfect there for me. I originally had the CG at 200mm with all three batteries on top of the fuel tank and it was way too squirrelly for me there, so I moved the two Fromecos over the nose.
There have been a lot of discussions on this thread about CG, which I have followed closely, and I still cannot figure out these large inconsistencies in battery placement and CG. I finally gave up trying to figure it out. My recommendation is to just get it in the ballpark (error to the nose heavy side) for the first flight, then adjust from there. I don't recommend starting with a CG of 200mm or more, especially if this is your first turbine jet.
Tom
There have been a lot of discussions on this thread about CG, which I have followed closely, and I still cannot figure out these large inconsistencies in battery placement and CG. I finally gave up trying to figure it out. My recommendation is to just get it in the ballpark (error to the nose heavy side) for the first flight, then adjust from there. I don't recommend starting with a CG of 200mm or more, especially if this is your first turbine jet.
Tom
Appreciate your numbers. Getting the cg to the 200 mark has become a quest for me, only because people on this thread have said that the plane fly's better when the cg is further aft. However because of the small size and using smoke it has become very interesting to reach the 200 mm balance point. actually I am enjoying trying to figure it out.
I have had quite a few jets over the years and usually don't spend as much time with the balance point.
Nice to know that you are happy flying at 190.
Stan
10-18-2018, 09:29 AM
#615
Stan,
Let us know your thoughts on how she flies at 200mm. I fly at a relatively small field so tight turns are the norm, when I flew mine at 200mm it was too easy to get into a high speed stall, fortunately none of the high speed stalls I encountered were fatal (I wish I could say that about a recent low speed stall
). I do have to apply a little elevator to keep her level in inverted flight, but just a wee little. If I were flying at a larger field where I could extend my turns a little I'd probably move my CG further back too, in the end there a lot of variables in this equation. Weather looks great for this weekend so I'm hoping to get my T1 and my remaining T1 Mini out for some flying -Tom
Let us know your thoughts on how she flies at 200mm. I fly at a relatively small field so tight turns are the norm, when I flew mine at 200mm it was too easy to get into a high speed stall, fortunately none of the high speed stalls I encountered were fatal (I wish I could say that about a recent low speed stall
). I do have to apply a little elevator to keep her level in inverted flight, but just a wee little. If I were flying at a larger field where I could extend my turns a little I'd probably move my CG further back too, in the end there a lot of variables in this equation. Weather looks great for this weekend so I'm hoping to get my T1 and my remaining T1 Mini out for some flying -Tom
10-18-2018, 10:05 AM
#616
My Feedback: (1)
Stan,
Let us know your thoughts on how she flies at 200mm. I fly at a relatively small field so tight turns are the norm, when I flew mine at 200mm it was too easy to get into a high speed stall, fortunately none of the high speed stalls I encountered were fatal (I wish I could say that about a recent low speed stall). I do have to apply a little elevator to keep her level in inverted flight, but just a wee little. If I were flying at a larger field where I could extend my turns a little I'd probably move my CG further back too, in the end there a lot of variables in this equation. Weather looks great for this weekend so I'm hoping to get my T1 and my remaining T1 Mini out for some flying -Tom
Let us know your thoughts on how she flies at 200mm. I fly at a relatively small field so tight turns are the norm, when I flew mine at 200mm it was too easy to get into a high speed stall, fortunately none of the high speed stalls I encountered were fatal (I wish I could say that about a recent low speed stall
). I do have to apply a little elevator to keep her level in inverted flight, but just a wee little. If I were flying at a larger field where I could extend my turns a little I'd probably move my CG further back too, in the end there a lot of variables in this equation. Weather looks great for this weekend so I'm hoping to get my T1 and my remaining T1 Mini out for some flying -TomWith my current setup, placing my 3 batteries where you have yours the best numbers I got was a touch over 190 mm. This is where I will fly it. If I am unhappy I will pull the remaining hairs out of my head
I will let you know as soon as I can fly it.
Right now I am fighting another problem where my left flap goes to full down buzzes and won't respond . It has happened twice now indiscriminately when it chooses. when I shut the power off the servo move about 1/2 the normal distance freely, like it hits a stop on either side.. when I turn it on it goes back to normal operation. really strange. I have some new servos coming from Dirk Savox 1250's.
Stan
10-18-2018, 11:06 AM
#617
Stan,
Let us know your thoughts on how she flies at 200mm. I fly at a relatively small field so tight turns are the norm, when I flew mine at 200mm it was too easy to get into a high speed stall, fortunately none of the high speed stalls I encountered were fatal (I wish I could say that about a recent low speed stall). I do have to apply a little elevator to keep her level in inverted flight, but just a wee little. If I were flying at a larger field where I could extend my turns a little I'd probably move my CG further back too, in the end there a lot of variables in this equation. Weather looks great for this weekend so I'm hoping to get my T1 and my remaining T1 Mini out for some flying -Tom
Let us know your thoughts on how she flies at 200mm. I fly at a relatively small field so tight turns are the norm, when I flew mine at 200mm it was too easy to get into a high speed stall, fortunately none of the high speed stalls I encountered were fatal (I wish I could say that about a recent low speed stall
). I do have to apply a little elevator to keep her level in inverted flight, but just a wee little. If I were flying at a larger field where I could extend my turns a little I'd probably move my CG further back too, in the end there a lot of variables in this equation. Weather looks great for this weekend so I'm hoping to get my T1 and my remaining T1 Mini out for some flying -Tom
I have my CG at 200-205. You can look at post #592 above for my battery placement. I'm flying a K-85G2, 60oz tank, no smoke or smoke tank. UAT is on top of the main tank. I also have to give a wee little bit of up elevator in normal flight and roughly the same wee little inverted. I'm very happy with how she flies and I'm going to get the CG back to 210 to see what happens. I'm doing a lot of banking and yanking. Typically the last minute or so of the flight, I'll take her up and try to make her do bad things so I know what to expect when. I've had three tip stall type events, one on purpose and two in various aspects of real flight. In all cases it snaps more or less to level flight when applying too much elevator and bank at too low of power. Much of my flight is around half throttle with bursts both maximum and idle depending on my maneuvers. I currently have 38 flights on my Mini for 4:03:30 of flight. I don't know how small your field is. I've attached a map of our field...which I consider small for turbines. At 200-205, it's not too snappy for me in my environment. This is my first turbine, but tons of EDF jet experience as well as all other kinds of aircraft.
Hope this helps...
Speaking of "bursts" of throttle....good tailwind yesterday.
Last edited by T3chDad; 10-18-2018 at 11:13 AM.
10-18-2018, 11:56 AM
#618
Hi Tom.
With my current setup, placing my 3 batteries where you have yours the best numbers I got was a touch over 190 mm. This is where I will fly it. If I am unhappy I will pull the remaining hairs out of my head
I will let you know as soon as I can fly it.
Right now I am fighting another problem where my left flap goes to full down buzzes and won't respond . It has happened twice now indiscriminately when it chooses. when I shut the power off the servo move about 1/2 the normal distance freely, like it hits a stop on either side.. when I turn it on it goes back to normal operation. really strange. I have some new servos coming from Dirk Savox 1250's.
Stan
With my current setup, placing my 3 batteries where you have yours the best numbers I got was a touch over 190 mm. This is where I will fly it. If I am unhappy I will pull the remaining hairs out of my head
I will let you know as soon as I can fly it.
Right now I am fighting another problem where my left flap goes to full down buzzes and won't respond . It has happened twice now indiscriminately when it chooses. when I shut the power off the servo move about 1/2 the normal distance freely, like it hits a stop on either side.. when I turn it on it goes back to normal operation. really strange. I have some new servos coming from Dirk Savox 1250's.
Stan
I think starting at 190ish is wise, this jet flies fine there, definitely no problem flaring on landing, you can always slowly move it aft if you want later, but it you are okay with it there why bother moving components around? My sense is that this jet has a fairly wide range of acceptable CG positions and I found the same to be true for it's bigger brother. -Tom
10-18-2018, 02:40 PM
#619
I know I'm not Stan, but I thought I'd throw in my $0.02.
I have my CG at 200-205. You can look at post #592 above for my battery placement. I'm flying a K-85G2, 60oz tank, no smoke or smoke tank. UAT is on top of the main tank. I also have to give a wee little bit of up elevator in normal flight and roughly the same wee little inverted. I'm very happy with how she flies and I'm going to get the CG back to 210 to see what happens. I'm doing a lot of banking and yanking. Typically the last minute or so of the flight, I'll take her up and try to make her do bad things so I know what to expect when. I've had three tip stall type events, one on purpose and two in various aspects of real flight. In all cases it snaps more or less to level flight when applying too much elevator and bank at too low of power. Much of my flight is around half throttle with bursts both maximum and idle depending on my maneuvers. I currently have 38 flights on my Mini for 4:03:30 of flight. I don't know how small your field is. I've attached a map of our field...which I consider small for turbines. At 200-205, it's not too snappy for me in my environment. This is my first turbine, but tons of EDF jet experience as well as all other kinds of aircraft.
Hope this helps...
Speaking of "bursts" of throttle....good tailwind yesterday.
I have my CG at 200-205. You can look at post #592 above for my battery placement. I'm flying a K-85G2, 60oz tank, no smoke or smoke tank. UAT is on top of the main tank. I also have to give a wee little bit of up elevator in normal flight and roughly the same wee little inverted. I'm very happy with how she flies and I'm going to get the CG back to 210 to see what happens. I'm doing a lot of banking and yanking. Typically the last minute or so of the flight, I'll take her up and try to make her do bad things so I know what to expect when. I've had three tip stall type events, one on purpose and two in various aspects of real flight. In all cases it snaps more or less to level flight when applying too much elevator and bank at too low of power. Much of my flight is around half throttle with bursts both maximum and idle depending on my maneuvers. I currently have 38 flights on my Mini for 4:03:30 of flight. I don't know how small your field is. I've attached a map of our field...which I consider small for turbines. At 200-205, it's not too snappy for me in my environment. This is my first turbine, but tons of EDF jet experience as well as all other kinds of aircraft.
Hope this helps...
Speaking of "bursts" of throttle....good tailwind yesterday.
Our field boundaries are 1200x450', plus we have 35ft poles all over the place because our flying field doubles as the overflow parking for the Clark County Event Center. Because the field is so small I rarely fly over half throttle (usually only on T/O and verticals) and keep my speeds under 125mph, which is not a problem with these T1 jets, they seem to fly very nicely around 115-125mph.
10-24-2018, 04:39 PM
#620
Well, had a slight problem with my K70 during the bench run and had to send it in. Turns out it was beyond repair so now I’m going with the K85. I think this will work out better for CG anyway with the slightly heavier 85 and I won’t mind the extra power either. What are you setting your timers at with the 85?
10-24-2018, 04:49 PM
#621
Well, had a slight problem with my K70 during the bench run and had to send it in. Turns out it was beyond repair so now I’m going with the K85. I think this will work out better for CG anyway with the slightly heavier 85 and I won’t mind the extra power either. What are you setting your timers at with the 85?
10-25-2018, 03:31 AM
#625
Well, had a slight problem with my K70 during the bench run and had to send it in. Turns out it was beyond repair so now I’m going with the K85. I think this will work out better for CG anyway with the slightly heavier 85 and I won’t mind the extra power either. What are you setting your timers at with the 85?