BeerorKid
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IMAG0229 by beerorkid, on Flickr
Picked up some rail buttons with the well nuts from Dog House Rocketry and even though I have yet to launch with them it is obvious that they are smoother than the PML guides I picked up and had a problem with out on the pad.
I know that most often rail buttons are meant for MPR and above, but I want to use them so much and have worked them in on my LPR and built a nice launch pad from a Rockwell Jaw stand.
1. Seems in MPR and HPR the rail buttons are screwed into the engine rings and that sets their placement. In LPR that really is not possible. With the well nuts on the ones I bought I can place them anywhere and I would guess that spreading them out over the body of the rocket would be beneficial. Is that true?
2. my current rail is 40 inches of usable rail, but I picked up a 72 inch rail and can extend my current setup by two feet. If I am using rail buttons would there be any disadvantage of me using the longer rail? I am guessing there might be a bit more drag, but I line the rail with graphite powder just in case. Also since I am mostly LPR I thought maybe there would be some possible negatives.
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