New FB Jets Large L39
#77
Hi,
one of the other adjustments was that I replaced everything air for electric. Chassis shaft doors and aerodynamic brakes control servos and chassis mechanisms I used Electron retracts ER50eVo. Only the brakes are air. For electric, I would have to buy whole new wheels and I also had a Jet tronics Brake valve, so I used it.
one of the other adjustments was that I replaced everything air for electric. Chassis shaft doors and aerodynamic brakes control servos and chassis mechanisms I used Electron retracts ER50eVo. Only the brakes are air. For electric, I would have to buy whole new wheels and I also had a Jet tronics Brake valve, so I used it.
#78
Hi,
finally change the brakes. I used a new electric from Electron Retracts diameter 50 mm. I have a question about the UAT tank. Doesn't that make a problem with the UAT tank in the nose of the hull, the main tank in the middle and the turbine in the back?
Thank you.
finally change the brakes. I used a new electric from Electron Retracts diameter 50 mm. I have a question about the UAT tank. Doesn't that make a problem with the UAT tank in the nose of the hull, the main tank in the middle and the turbine in the back?
Thank you.
#81
Thread Starter
Yes, that is correct, the reason is because that's the landing configuration when you really do need balance at its best.
My uat is midships with a filling tube running to the nose for ease of access
Hope that helps.
My uat is midships with a filling tube running to the nose for ease of access
Hope that helps.
#84
I have a modified wing. I cut off the flaps from the wing and fastened the hinges from the underside of the wing. Maybe I changed the depth of the wing a bit. CG states 150 mm in the manual. jkjunior stated here that the CG 170 mm suited him. So I took it to the center and put CG at 160 mm. The first flight was almost the last. The albatross was almost unmanageable and I was very lucky to land without damage. Finally, when Gary looked at his records, he wrote me that he gave his Albatross without a modified wing a CG of 150 mm. He was very sensitive to elevator and therefore added 6 oz (170 g) of lead to his nose. I have a 210 N JetsMunt M210TS turbine, but it's 13.05 oz (370 g) heavier than Gary's Wren 160. I moved the turbine battery from center to nose and had to add 7.54 ounces (214 g) of lead in my nose. CG I now have 140 mm. If you are building this aircraft, I recommend balancing it at 140 mm and if it does not suit you, you can always move the center of gravity backwards. Above all, you will avoid a crisis on your first flight.
Last edited by Czech; 11-27-2021 at 03:46 AM.
#86
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Does any of you have a canopy that would like to sell. My L39 has a complete canopy and I really need it. It's a generation. 1 or 2 kit. I WOULD APPRECIATE IT.
Thanks, Hector
Thanks, Hector
#87
Arrangement with the original tube
Original and new tube
New installation
I wanted to get rid of 214 g of lead in my nose, but with the heavier JetsMunt M210TS turbine there was a problem. The original exhaust pipe was short, so it was not possible to move the turbine closer to CG. I ordered a new one, longer, with a larger diameter and, surprisingly, it was also lighter than the original one. November 28 ordered and paid. The tube was delivered to me on December 3. Ordered at Grumania Jets: GRUMANIA JETS