#3dlabprint spitfire retract gear optuin install
#3dlabprint spitfire retract gear optuin series

Leak checking is easy a little soapy water on the connections bubbles mean leaks simple as that. fully pressurized then cycle the gear if they don't work,or cycle slowly, then they need to be fixed,checked for leaks. Р”Р„t the start of each flying session you pump your gear up and cycle them until they don't work,I pump my gear up and let whatever plane thats going that day sit for a few min.

#3dlabprint spitfire retract gear optuin install

Sure if your air system has a leak thats a contingency, having the spring down feature, but the idea is to install your gear, so it doesn't leak and do periodic pressure tests the hassle of warbirds. But are there advantages to having an air/spring system? It was for a 8-18 lb, and the kit box has a flying weight for 10-12 so i should be good there. What would be a stronger set up, the systems that are air/spring Or i saw a air up air down on robart website. So there are options,I have used all the gear but the 510 series, they all do the job well, and cost about the same + or - a few dollars, so far I am most impressed with my new LADO's for ease and sturdy construction, but the choice is yours of course keep doing your research like your doing its how I started learning about this stuff,still am.

They have a 3/16 wire connector required for the struts to connect to the retract units which is a standard type connection,I used a piece of piano wire heat treated to harden it for my connecting pins works great. I have a set in my Hangar-9 P-40, and another on order for my H-9 Mustang that should be delivered soon, these gear are nice,very sturdy and eleminates the need for air lines, just plug em in to your reciever and thats it no extra battery needed. Then there is the LADO gear there still a new company and there a bit slow to fill orders, but there getting better and the gear are electric actuated,the retract action is scale speed so there not snapping up into your wing like many air gear do unless you use air line restrictors. The 90o nylon ones work OK I have a set in my TF Spitfire and after making sure the mounting rails are perfectly strait there pretty good and you can fit struts to them using 3/16 wire connectors,and there light weight.

#3dlabprint spitfire retract gear optuin series

The 510 series of Robart's is nice but there spring down and air up,I like my gear to be retracted into the wing for storage and depending on how long you want the struts to be you end up with a short legged gear,robo struts are a little on the short side any way so you loose a little more if you have to insert the strut into the retract mech. Good idea asking questions you can go any number of ways with your gear, they all have there advantages, and detractors, I would suggest reading through the 74 pages of the 60 size TF mustang thread there is a ton of ideas and suggestions there to help you on your way to a nice looking, and flying model.Р”Р„s for gear I like the Century jet gear but the valves aren't the best and you can't adjust the speed unless you pay for a better one. Robostruts are sold separately and come in all kinds of configurations. The 500 series would work just fine for your Mustang. You can buy the 701's at if you like those better but they are about $40 higher there. Or if your cheap you can just use some wheel collars on the air lines using the set screw to limit the amount of air getting to the unit. If you look at the 500 series do yourself a favor and buy the 22 dollar Robart Variable Rate valve so you can control the retract speed, without it they'll just slam up and down possibly weakening the wing structure over time or liberating your rail mounts after a while. The 511RS' and 510RS' are 126.99 and are in stock at. The Robart 701RS' are 127.99 and currently out of stock at Tower Hobbies. The Robart 511RS and 510RS are also air up/spring down retracts (511 is 85 degree, 510 90 degree) and accept 3/8ths inch struts out of the box. The 701's are air up/spring down 85degree retracts (no idea what the Mustang calls for degree wise).

I have the Robart 701RS system for my Top Flite P47 kit and 7/16th robostruts.

Trax, Robart also makes air up/spring down systems and a lot are RoboStrut Ready.