VK96

Can someone confirm there is no spar for the horizontal stab, just clamps? Thanks!

Desertlakesflying

My Feedback: (28)

Just clamps front and back on the regular T-One so I would assume so...

Tip22v

VK96, I'm not sure what you mean by "spar", but my T-1 and T-1 mini both have clamps on the main wings and horizontal stab. The T-1 mini has a fixed vertical stabilizer though, where the regular T-1 has a removable vertical stabilizer (with clamps also). Hope this helps. - Tom

VK96

Just wanted to be sure there was not a carbon or metal tube that went between the horizontal stabs...the clamps look like they’ll be fine, but want to be sure I wasn’t missing a part. Overall, very pleased with the quality and amount pre-assembled at the factory. Nice kit, easy build!

Tip22v

Got it, thanks for the clarification.

DrScoles

My Feedback: (18)

Finished my Mini T1 today. What an easy build! I am using three batteries, a 2100 life pack for the turbine... I put it right on the spar behind the tank. Then two 2600 Liion's one for the smoke and gear, the other for rx. One is in front of the tank, the other up in the nose. Not as bad as Lior had to deal with for balance, but it was not the traditional have to put lead in the nose to get it to balance kind of plane. ;-)

Here's some pics.... Our good friends in China had a tough time with spelling and naval/marine nomenclature on this one... not the end of the world.

VK96

Finishing up my build and now see why there’s question about the CG. With a K85 it looks like I’ll need the batteries in the nose for sure. That said, depending on where guys are measuring the CG from there can be a big difference. The distance between where the root of the leading edge meets the fuse (not part of the detached wing) and where the detached portion of the wing root begins is 25mm. In other words, 2 people could both say they are at 200mm with a 25mm difference. It would definitely help if guys can clarify where they are measuring from. I’d be most interested in hearing from Lior and Emart who have flown the plane. I use the Xicoy CG meter and found the following distances for comparison;
Mains to Nose- 777mm
Mains to CG (actual wing root to fuse-most forward ref point)-96mm

Tip22v

I’m also finishing up my build, just need to figure out where to put the batteries for CG. The best way for us to all reference the same CG point is to reference the CG relative to the center of the wing tube. I also have the Xicoy CG computers (both models) and used the little laser thingy to check my measurements. I measured 800mm from the nose strut to the main struts, from there I measured 48mm to the CG. I currently have my CG point 5mm behind the center of the wing tube. In this config with a K85 and empty header tank I had to place my 2100 3S Life battery on top of the fuel tank and my two Fromeco 2600 Li-ion batteries behind the tank(like Lior) to get the CG right.

Tip22v

Forgot to mention my weight with no fuel is 16.8lbs. This thing is going to right at 20lbs full of fuel.

Tip22v

Ok, I just checked my numbers again by turning the jet over in the cradle, I’m coming up with 767mm from nose strut to main struts. With my CG point 5mm behind the center of the wing tube I measure 54mm from the main struts to the CG point. To get the CG to balance with these numbers I have to put all three batteries on top of the fuel tank.

Tip22v

Just need to figure out where to put the batteries and I'm done with this build:

Dansy

My Feedback: (53)

Measurement for the gear Center of wheel....is normally with gear on the ground the same way you use the scales....with the UAT full....at least that’s the way I do it....otherwise the measurements will be different once you put the plane on the scale

jesse2357

My Feedback: (2)

I maidened mine today, first flight uneventful one of the easiest jet maidens I've ever had Second flight started off great.. I really wished I would have put ion the 85 the 70 just doesn't move this jet fast enough. Top speed was only 105 mph air speed. half way thru the flight I heard a whistling sound. Landed as soon as I could. Bearings in the turbine sound bad but I'll let Kingtech figure that out. Other wise a good day

Tip22v

Sorry to hear about possible problem with your K70.
Can you tell me where you put your CG relative to the center of the wing tube? I’ve got all my batteries on top of the tank and my CG is coming out right in front of the centerline of the wing tube (with empty tank and full UAT). Ran my K85 in the jet for the first time today, everything was good, no leaks. I’m hoping to maiden next weekend if the weather permits.

jesse2357

My Feedback: (2)

I'm 205mm back from where the wing meets the fuselage, I know there is some debate on where that is, My cg is 70mm in front of the center of the main gear wheel. CG was spot on from the limited flying today.

DepecheMode101

My Feedback: (1)

how did the Jeti assist preform?

jesse2357

My Feedback: (2)

I had assist turned off the flights. I tested my 7 assist in a turbo bush master 3d plane and found it to perform flawless.

Tip22v

Thanks for the info, I continue to be dumbfounded as to how much variation there appears to be in where folks are setting the CG. I'm coming to a conclusion that this airframe has a pretty wide tolerance for a flyable CG position. I'm going to split the difference and set my CG to the center of the wing tube with gear down, empty main tank and full UAT, and start there. Weather is looking for good for some flights this weekend!

Tip22v

I noticed in the photo that you have the Xicoy CG computer, would you mind sharing your measurements and resulting numbers? (distance from nose to main, distance from main to CG point) I have a Xicoy computer also, I'm curious how mine will measure using the same numbers. Thanks.

jesse2357

My Feedback: (2)

Here is my Xicoy measurements
now if you look I pushed everything towards the tail cause everyone said they were nose heavy. My turbine I pushed behind the former. I also mounted my pump and switch in the rear hatch area.

Tip22v

Thanks for the info, I also came up with 767mm from nose strut to main gear strut (not wheel to wheel). If the trailing link offset is the same for the nose wheel and the main wheel then measuring strut to strut should be the same outcome as measuring wheel to wheel. However, I measured from the rear strut to the CG point instead of the center of the main wheel to the CG point, which was 54mm. I did it this way because the moment should be measured where the down force is located on the fuselage, not necessarily where the wheel touches the ground and with a trailing link offset these two measurements will be different. Now, because the main wheel is offset about 13mm behind the strut I believe your 70mm from the main wheel, and my 54mm from the main strut will result in roughly the same CG point on the fuselage. Where I'm confused is that the computer does not know that your 70mm is measured from the wheel and my 54mm is measured from the strut and this could result in you and me having a CG that is off by ~15mm using the same computer measurements. When reading the Xicoy instructions for how to make the measurements it says to measure from the wheels, which works mathematically if there is no trailing link offset, but if there is any significant amount of trailing link offset wouldn't the CG will be mathematically inaccurate up to amount of the offset? Whew, this is lot harder than it should be, I'm just going to check my CG the old fashioned mechanical way and go fly!

jesse2357

My Feedback: (2)

The trail of the wheel does matter when using weight to balance. It matters so much that your suppose to tie wrap your gear so it doesn’t move at all and effect your readings. Also the plane being level matters as well all key factors to get a good result.

Tip22v

Good idea on the tie wrap.
Is there anything special that needs to be done with regards to the nose gear door servo? I'm assuming I just plug it into one of the servo outputs on the JP controller? My gear door and servo came pre-mounted from the factory, how do I adjust the open and closing position (endpoints) of the door? Thx.

Dansy

My Feedback: (53)

You cannot adjust it in the radio, if it need adjustments....you will need to plug it in the RX, that’s what I had to do with the same controller in my T-1

Tip22v

Thanks, I was thinking the RX was my only option. I also have a Xicoy retract/brake controller I might use instead but I have to do some testing to compute the cutoff amperage for the JP retracts.