Trouble locating parts

[captbk]

I have some tubes and NC of an odd size and I cant figure out what/where to get parts. I am looking for some centering rings and coupler. I measured the tube and it's 1.8" OD. Anyone know what size this is and where I can get parts? I already checked Balsa Machining and there is nothing close to this size.

 

[Rex R]

try 'erockets.biz' look for 'BT-65'
Rex

 

[kuririn]

If it's an ST-18 tube, you can get centering rings and couplers at Erockets.
If it's an HBT-1800 tube, like the one used in the Estes D Region Tomahawk, I think you're out of luck.
Edit: If it's a specialty size, why not make your own centering rings and couplers? Not that difficult.

 

[captbk]

I think it was from the D-Region Tomahawk. I had a couple kits years ago and this must be the leftovers. I looked over erockets and ordered some Semroc centering rings and some couplers. We'll see if they work. If not there's always sandpaper.