Hangar 9 60cc Corsair
10-26-2015, 02:39 PM
#2158
OK, got some more flights on the Corsair this weekend with the 22X10 prop on the G62. The engine is handling the prop just fine and the plane is moving around well. But, yet another problem with the tail gear. This time the shock strut fell out. It came loose from both the gear side (large trunnion) and small side where it hooks to the gear for actuation. This is a bit frustrating with the gear just falling apart, second time some thing has fallen off of it. I'm going to call Horizon and discuss.
Be forewarned once again, if you dont want your tail gear to fall apart, take it apart and locktite all the threaded parts before stuff falls off.
Be forewarned once again, if you dont want your tail gear to fall apart, take it apart and locktite all the threaded parts before stuff falls off.
10-28-2015, 06:33 PM
#2163
... the stiffness, is a major cause of the tailwheel unit falling apart. By softening it up, as well as the tailwheel you reduce quantity of sudden load on the stress points which tend to loosen themselves up. I.E - vibration, and direct load on a stiff metal bracket will tend to vibrate lose any connections made with screws, nuts, bolts etc. For the same reason you want to loctite any metal to metal connection in general. To reduce stress on the frame, and hence shock unit - just like in a car, you provide dampening, or a way to soften and disperse some of that load into other components.
Soften/replace the spring, and use a soft "low bounce" rubber tailwheel, plus some loctite and a little grease on the piston of the shock unit - and you won't see any more issues with it falling apart. In this case, these items are too firm - and not absorbing enough of the load.
Soften/replace the spring, and use a soft "low bounce" rubber tailwheel, plus some loctite and a little grease on the piston of the shock unit - and you won't see any more issues with it falling apart. In this case, these items are too firm - and not absorbing enough of the load.
10-29-2015, 04:05 PM
#2164
... the stiffness, is a major cause of the tailwheel unit falling apart. By softening it up, as well as the tailwheel you reduce quantity of sudden load on the stress points which tend to loosen themselves up. I.E - vibration, and direct load on a stiff metal bracket will tend to vibrate lose any connections made with screws, nuts, bolts etc. For the same reason you want to loctite any metal to metal connection in general. To reduce stress on the frame, and hence shock unit - just like in a car, you provide dampening, or a way to soften and disperse some of that load into other components.
Soften/replace the spring, and use a soft "low bounce" rubber tailwheel, plus some loctite and a little grease on the piston of the shock unit - and you won't see any more issues with it falling apart. In this case, these items are too firm - and not absorbing enough of the load.
Soften/replace the spring, and use a soft "low bounce" rubber tailwheel, plus some loctite and a little grease on the piston of the shock unit - and you won't see any more issues with it falling apart. In this case, these items are too firm - and not absorbing enough of the load.
OK I would tend to agree with your theory for the most part. But I received my replacement tail wheel assembly today and right away I took the shock absorber apart, by hand. No tools needed to remove any of the threaded fittings. I think if they at least put locktite on the fittings that would solve the problem of that thing falling apart over time. Although, once disassembled I noted the ugly spring you mentioned. The one that looks like crunchy chee-too
10-29-2015, 04:34 PM
#2166
Standard thought process for any manufacturer who runs a quality program would be to correct those things after they are discovered, but maybe the hobby industry is a little different where the product has a relatively short shelf life, there's really no point to making improvements when the next bright shiny object is already in the pipeline.
11-03-2015, 11:39 AM
#2167
I'm feeling disillusioned about the landing gear and tail wheel assemblies....sounds by the experiences so far on this thread that they are less than desired quality in general.
Has anybody tried to find a replacement system that might work ?? Sierra ??...before I shell out $600 soon for the whole system.
Has anybody tried to find a replacement system that might work ?? Sierra ??...before I shell out $600 soon for the whole system.
11-03-2015, 11:51 AM
#2168
I'm feeling disillusioned about the landing gear and tail wheel assemblies....sounds by the experiences so far on this thread that they are less than desired quality in general.
Has anybody tried to find a replacement system that might work ?? Sierra ??...before I shell out $600 soon for the whole system.
Has anybody tried to find a replacement system that might work ?? Sierra ??...before I shell out $600 soon for the whole system.
11-03-2015, 11:58 AM
#2169
I'm feeling disillusioned about the landing gear and tail wheel assemblies....sounds by the experiences so far on this thread that they are less than desired quality in general.
Has anybody tried to find a replacement system that might work ?? Sierra ??...before I shell out $600 soon for the whole system.
Has anybody tried to find a replacement system that might work ?? Sierra ??...before I shell out $600 soon for the whole system.
I went through all this myself. I originally bought the first Robart gear offered. Just while testing on the bench I broke both of the mains. After many, many phone calls and emails with Horizon and Robart they kinda confessed to the situation. At first Robart were sending these retracts out to be built for them. (I think china, my personal opinion) after all the problems and issues they decided to bring them back into Robart and manufacture them here. I now have the generation 2 gear in my plane, complete. The actuators and control box all changed with the generation 2. I don't see as much if any plastic anymore, they are all aluminum. So far so good on the new set, If I were to buy new I believe I would now go with Robart and the Gen 2 retracts.
11-03-2015, 12:13 PM
#2170
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For what its worth, I have 25 flights on mine with Robart air operated mains and the Hanger 9 tail wheel. No gear issue at all with the mains. The tail wheel failed after about 5 flights. As suggested in a earlier post, put in a softer spring and Lock Tite and it appears to be fine. Enjoying this airplane, really nice flying and easy to land using the suggested flap throws. Almost trainer like.
11-04-2015, 10:42 AM
#2175
For what its worth, I have 25 flights on mine with Robart air operated mains and the Hanger 9 tail wheel. No gear issue at all with the mains. The tail wheel failed after about 5 flights. As suggested in a earlier post, put in a softer spring and Lock Tite and it appears to be fine. Enjoying this airplane, really nice flying and easy to land using the suggested flap throws. Almost trainer like.
Wondering if a lot of retrofitting is required with the Sierra's ..can teh original gear doors be used ? etc.
Thanks