I would wait and see... again my whole kit is a lot older than yours... and even after I double checked the tail rotor vertical alignment (and actually shifted it a smidge to the right to make it completely vertical and aligned) it didn't correct the problem... it kinda made it a little bit worse... Your's might align perfectly dead center... I think it's just one of those things when it comes to these types of kits...
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Roban AH-1W Cobra 700 Size Scale Helicopter
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Originally posted by sfcfury View PostI think I originally had my about how tight as DC is describing on his AH6... so much I probably could barely put any twist on the belt; but I don't know the tail mechanics setup on the AH6 800 size... but that amount tension lead to the problem. This go around I have it so that when I squeeze the belt from the middle (middle being from motor pulley to big gear) I can get about a 1/2 in of push... and about a quarter twist in the belt. I had it a little bit looser than that at first, and that actually gave a lil slop in the tail mechanics as well.
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DC, I would imagine the belt would give a little bit after some use... and if it has caused any problems you should be gtg. I knew by the 3rd hover flight that something was messing up. Just something to just watch for. I think if you can pinch the belt in some and give a little bit of twist, that should be right about were you want it.
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Originally posted by Helijet View PostHere is how to do it
Belt tightening around the 6:00 minute mark.
The Cobra is my favorite of the 800 series.
Cheers
Dean W.
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Originally posted by Helijet View PostHere is how to do it
Belt tightening around the 6:00 minute mark.
The Cobra is my favorite of the 800 series.
Cheers
Dean W.
Helijet, I do believe the Cobra is a 700 size??
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Originally posted by sfcfury View Post
Thanks! I have posted that video a couple times in the thread as well... I found it after the fact of course tho!
Thanks for your help sfcfury, really appreciate it.
So I went back and adjusted my belt again, made sure I could twist it a little and squeeze it together like the video, it does seem to turn smoother, so now I will for sure adjust my AH-6, its way to tight.
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Originally posted by Helijet View PostOops right...sorry..700 size.
I also have the Airwolf, Huey and 500 which are 800.
Dean
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Following all of the discussion on the mechanics closely. Hoping to get mine to fly on the test rig soon. I am continuing work on the gun turret at the moment, and finished up adding the servo for gun elevation. Used a 5 gram servo that barely fit inside the housing and some old 450 ball links to get it working. The movement range actually mirrors the real thing pretty closely. I also cut open the bottom of the turret, as the real is open as well for maintenance and ejecting casings. I’m still debating whether to add the cover plate on the turret or not around the barrel. In the States, it is kept on, but it is usually removed in combat environments for accessibility to the gun.
One other thing I’m still trying to figure out is a mechanism to trigger the gun barrel rotation. As of now with the retract motor board, the barrel spins for 4 seconds when triggered. Does anyone know of a receiver activated switch that I could use to trigger it? Would be nice to be able to fire it for different intervals other than 4 secs.6 Photos
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Originally posted by F106DeltaDart View PostFollowing all of the discussion on the mechanics closely. Hoping to get mine to fly on the test rig soon. I am continuing work on the gun turret at the moment, and finished up adding the servo for gun elevation. Used a 5 gram servo that barely fit inside the housing and some old 450 ball links to get it working. The movement range actually mirrors the real thing pretty closely. I also cut open the bottom of the turret, as the real is open as well for maintenance and ejecting casings. I’m still debating whether to add the cover plate on the turret or not around the barrel. In the States, it is kept on, but it is usually removed in combat environments for accessibility to the gun.
One other thing I’m still trying to figure out is a mechanism to trigger the gun barrel rotation. As of now with the retract motor board, the barrel spins for 4 seconds when triggered. Does anyone know of a receiver activated switch that I could use to trigger it? Would be nice to be able to fire it for different intervals other than 4 secs.
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Originally posted by sfcfury View Post
Can you do away with the motor board? And just go direct to the receiver? Then is just be an on/off switch on the transmitter for that channel? Or is the motorboard needed to make it spin period?
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Just found this and put in an order. Hopefully it will do the job: https://smile.amazon.com/gp/product/...TP8E47U9&psc=1
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With my sound card, I have a sound 2 option... I haven't finished playing with it yet, but my intent was to have an APU sound on that channel... and I wanted to tie my lights in with that. I know not all heli's have APU's, but it seems most twin engines ones do. I door gunned on blackhawks, and we had APU on those.... and the Apaches had APU's as well. Anyhoo, the end state in my mind was to flip an aux switch (that's linked to sound 2) and have APU and lights come on, then other aux would be linked to sound 1 (which would be turbine spool up to idle).
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Ohhhh, F106...you’re sorely tempting me to dumb thumb one of my foam jets just to gut the innards. That gun needs a parts kit (hint) for sale to us folks short on imagination.
sfcfury...could you vid that sound when it’s up & ginning? I’ve heard some on ‘tube but would like to hear how your installation sounds.
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Originally posted by PawPaw View PostOhhhh, F106...you’re sorely tempting me to dumb thumb one of my foam jets just to gut the innards. That gun needs a parts kit (hint) for sale to us folks short on imagination.
sfcfury...could you vid that sound when it’s up & ginning? I’ve heard some on ‘tube but would like to hear how your installation sounds.
I did get it mounted to the aircraft today. Still waiting on a 180 deg servo for gun azimuth. This will also tie to the FLIR so that the movements are synchronized. Tomorrow I’ll start to work on getting the mechanics together. I also started some detail work on the FLIR. I couldn’t stand the black painted lenses, so I cut out the left opening, and added some clear plastic with a mirror film on the right. For the left side, I’m hoping to embed a small FPV camera inside for an observer to operate. They would be able to control the gun and FLIR during flight. Should be great for handing off to kids and friends during fun flys.4 Photos
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