• Have you entered ???
    LAUNCH LAB ROCKETRY GIVEAWAY

Apogee X-15 with Rail Buttons?

The Rocketry Forum

Help Support The Rocketry Forum:

danb

Well-Known Member
Joined
Jan 22, 2009
Messages
111
Reaction score
4
I'm working on my X-15. The goal is to fly it at NYPower in about 46 days.

The host club "Mars" requires the use of rail buttons on anything over an "E". I'm concerned that the 1010 rail may interfere with the wings. I'd hate to use standoffs.

Any suggests or hints?

Thanks!
 

David Schwantz

Well-Known Member
TRF Supporter
Joined
Jul 23, 2018
Messages
2,280
Reaction score
1,128
Location
MN
Do you have a chunk of 1010 rail? If so, just try the fit before you drill holes. I have an X-15 also, not Apogees, but just about the same size. I have both 1/4" lugs and rail buttons. On opposite sides, under the wings.
 

danb

Well-Known Member
Joined
Jan 22, 2009
Messages
111
Reaction score
4
Apogee has been great with support. They have informed me that it is my responsibility to re-engineer any alterations to the design. Unfortunately, I do not have any 1010 rail. I may be forced to model the profile.
 

David Schwantz

Well-Known Member
TRF Supporter
Joined
Jul 23, 2018
Messages
2,280
Reaction score
1,128
Location
MN
If you can give me the OD of the tube, I can compare to mine. Can post pics if I think it may also fit on yours.
 

danb

Well-Known Member
Joined
Jan 22, 2009
Messages
111
Reaction score
4
Can you fly at other clubs? Just don't fly it there. Problem solved. Maybe save flying it with your own launch equipment if you have it?
That's not a problem solved, It's a problem avoided! I'm building it specifically to launch at NYPower!! Truthfully, it's very difficult for me to get out to a launch these days. I'm taking vacation to do this fantastic launch.
 

kuririn

BARGeezer
TRF Lifetime Supporter
TRF Supporter
Joined
Oct 3, 2016
Messages
6,042
Reaction score
3,893
Location
Hawaii
I tried to seat the channel of a 1010 rail flush to the body tube. With one rail side touching the bottom stab the opposite side was riding up on the wing fairing ever so slightly. Maybe 1/8". Your results may differ. So if you decide to mount rail buttons you would probably need a slight standoff.

Since this kit just came out I presume this is the maiden flight?
Why not maiden her with the stock lugs on an E motor?
Since the stability is marginal to the point that an engine retainer is not recommended, I would maiden her on the lightest recommended motor, a 29 or 24mm E. If the flight is OK, then you can move up in motor weight. Apogee lists the following on the X15 web page:
29mm: E23T-5 Apogee 520'
24mm: E20W-4 Apogee 608'
E30T-4 Apogee 759'
E28T-7RMS Apogee 776'
Anyhoo, whatever you decide please show pics of the NYPower launch or it didn't happen. 😁
Cheers.
 

KenECoyote

Well-Known Member
TRF Supporter
Joined
Mar 19, 2015
Messages
2,986
Reaction score
234
I've been away, but last I recalled I was able to use micro buttons and rails at my local club on the LP pads. I even bought a micro rail myself to align the buttons (which were tiny). I think I even made an adapter so I could mount the micro rail onto a 3/16" rod base.
 

danb

Well-Known Member
Joined
Jan 22, 2009
Messages
111
Reaction score
4
I tried to seat the channel of a 1010 rail flush to the body tube. With one rail side touching the bottom stab the opposite side was riding up on the wing fairing ever so slightly. Maybe 1/8". Your results may differ. So if you decide to mount rail buttons you would probably need a slight standoff.

Since this kit just came out I presume this is the maiden flight?
Why not maiden her with the stock lugs on an E motor?
Since the stability is marginal to the point that an engine retainer is not recommended, I would maiden her on the lightest recommended motor, a 29 or 24mm E. If the flight is OK, then you can move up in motor weight. Apogee lists the following on the X15 web page:
29mm: E23T-5 Apogee 520'
24mm: E20W-4 Apogee 608'
E30T-4 Apogee 759'
E28T-7RMS Apogee 776'
Anyhoo, whatever you decide please show pics of the NYPower launch or it didn't happen. 😁
Cheers.
Thanks for the effort, I really appreciate it. Your findings are exactly what I expected. I think I'll try to incorporate a 1/4" standoff. Hopefully it doesn't have too much effect on the flight.

I'll do my best to get the photos. My buddy is coming with me this year specifically to photograph rockets.
 
Top