Phenolic tubes - ?how to make? - Model Rocketry Forums
2021年8月20日 · Phenolic glue isn't easy... Cascophen is one type of phenolic adhesive available for amateurs. I've never tried it for tubes but I doubt that it's easy to use. It shrinks a lot and isn't extremely sticky, so keeping the paper of the tube in place isn't going to be too simple.
Why Phenolic Tubing? | Rocketry Forum - Model Rocketry Forums
2014年8月12日 · Note that there are various types of phenolic. The most commonly used material is wound paper as well, but the "phenolic" means impregnating the paper with a resin that creates a (more) solid composite. Aside from variations in the base material and resin, tubes can be heat-cured as well ("vulcanized phenolic", solid as "blue tube").
Telemetry with Phenolic Tubes - Model Rocketry Forums
2024年1月31日 · I know the phenolic tube isn’t RF-transparent, but how do people using phenolic tubes usually perform any telemetry (if they do)? I’ve thought about using a body section of fiberglass around the avionics coupler, but I imagine that could introduce a world of structural issues if that would even allow RF transmission at all.
Pre-Glassed Phenolic Tube VS Full Fiberglass Tube
2016年7月5日 · I realized I had some scrap 6" dia pieces of both, one was 12" long and one 15" long. Sent them down 12 wooden steps of stairs to the basement, like a slinky. The Pre-glass cracked and chipped on the edge of the tube. The full fiberglass appears to be fine.
First Fiberglassing | Rocketry Forum - Model Rocketry Forums
2024年4月22日 · Phenolic tube is well known for cracking in a hard landing and that crack spreading. When it happened to me the crack was all the way around the tube in 2 places and the centering rings and the motor tube were what was holding the rocket together. I moved to full fiberglass. Norm Watch John Cokers videos
Reducing diameter of a body tube - rocketryforum.com
2017年7月21日 · Hi guys, I need to reduce the diameter of a 6 inch phenolic body tube. I've done it with cardboard tubes, but never with phenolic. With cardboard I just sliced out a strip length wise and glued it back together. Phenolic is more brittle of course, and I'm thinking I might have to cut it in half length wise and take a bit off each side.
Phenolic Tube Temperature Range - Rocketry Forum
2007年11月10日 · I'm not sure about motor tubes but McMaster-Carr lists the operating temperatures for 2-1/2" paper based phenolic tubes as being between +32 and +266 degrees Farenheit.
Why/When Do You Glass Phenolic Tubes? - Rocketry Forum
2007年1月10日 · The phenolic is brittle while the glass has some flexibility so while in a moderate impact the glass is undamaged the phenolic tube actually cracks and significantly weakens the airframe. I've had it happen with both tubes I've glassed and the tubes that PML glassed for me (their glassing job is awesome, three wraps of six oz cloth vacuum ...
Help with shear pins. | Rocketry Forum - Model Rocketry Forums
2024年7月20日 · I am finishing off a 57.2 mm outside diameter phenolic tube, carbon fin rocket to be powered by an I 350 cesaroni 38 mm 5 grain motor. It sims at mach 1.2 It's a motor eject, with JLCR recovery. The avionics bay is above the deployment bulkhead, just behind the nose.
REMOVING A MANDREL IN FIBERGLASS LAYUP - Rocketry Forum
2022年8月15日 · The phenolic coupler splintered and pieces got lodged between the plug and the fiberglass. This made it all the more difficult to drive the phenolic tube out. I ended up drilling holes in the wood plug to make it less ridged, and with continued difficulty I was …