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HelicopterMain Discussion › Kyosho Concept 30 SR-T Restoration
05-22-2017 07:03 AM  36 days agoPost 1
flyingnut1980

Heliman

Somerset, NJ USA

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Hi All,

While cruising eBay for Heli Finds, I came across an old Concept 30 SR-T in decent shape and picked her up with the intent to restore and fly for nostalgia purposes. Maybe kinda corny, but this is the same bird I learned to fly on 19 years ago.

Are there any old Concept guys out there? It's been a long time since I was familiar with this machine. Any pro tips or lines on parts would be a help.

As you can see, she still has 90's era guts in her. So my plan is rummage through my spare and old hardware to get her airborne again. Found an extra DSM2 receiver, GY401 and some decent Hitec Servos from an another bird no longer with us. I am hoping the OS .32 in her will come to life. Still moves freely and has good compression. I plan to tear it down and give it a good cleaning. The wood blades are shot, so I think I will throw some Align Carbon 520's on. -I believe this machine can utilize up to 525mm blades from what I read.

I did notice there is a good amount of play in the main and tail rotor grips, but they are not of the usual thrust bearing and damper designs modern birds use. I noticed from photos of Concepts that the blades do have a "droop" at the grips which seems to indicate this play is by design. Any opinions?

Eric

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05-22-2017 01:37 PM  35 days agoPost 2
tonyd12

Senior Heliman

hamlin,PA

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Srt

The conce had Individual head axles.one shaft per grip,so they droop u til up to speed.
Great machine I loved mine.still have some spares somewbere.

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05-22-2017 03:20 PM  35 days agoPost 3
Four Stroker

Elite Veteran

Atlanta

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There were two versions of this heli. Don't remember the exact nomenclature. The "beginner" version had a solid shaft/blade axel in the head and very very soft dampers. The expert version has the floppy head. The floppy heads flew great but auto-ed very poorly.

I think from memory the SRT was the beginner and the SRX the pro.

They came with 520 blades.

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05-22-2017 03:25 PM  35 days agoPost 4
Four Stroker

Elite Veteran

Atlanta

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Note that the SRT does not have an autorotation clutch !

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05-22-2017 03:58 PM  35 days agoPost 5
flyingnut1980

Heliman

Somerset, NJ USA

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@ Four Stroker I did notice there was no auto-rotation one-way bearing. I remember the one I had back in the day was the same setup. -Thankfully, I never had an engine out while I flew her. Think I may look around for an SR-X one-way bearing/gear setup and swap if I can find.

As far has the head goes, it's definitely the floppy setup. as tonyd mentioned above, the setup does not use a one-piece feather shaft. Rather, it is a two-piece bushed setup.

Eric

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05-22-2017 05:57 PM  35 days agoPost 6
Four Stroker

Elite Veteran

Atlanta

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Somebody "upgraded" the head while getting the aluminum start cone! While you take it apart look at what clutch it has. There were many updates. The last clutch has a molded in brass liner that you glued the usual gasket material to plus two ball bearings. The SS clutch is self adjusting and worked quite well. It has just enough spring to work. My Kyosho's had upgrade thin wall SS torque tubes that worked fine as well. Taya attempted to make a tiny helicopter that was as stable as a 60 FAI ship. Did a good job. But don't expect to do any 3D with it.

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05-22-2017 06:01 PM  35 days agoPost 7
Four Stroker

Elite Veteran

Atlanta

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I have a set of all metal paddles that came on the SRT. You have the upgrade paddles as well. The SRT was designed to sit in a hover and barely move while the beginner slammed the sticks all around.

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