Ah, exhibit A why I don't like friction fit, at least for BP motors. Second Kuririn's suggestion to use tape wrap in the future.For the next launch try wrapping the outside rear of the engine around the motor and tube instead of friction fit.
This is what I would do. Just unwind it from the inside.You can unwrap the casing from the inside out.
I almost sacrificed an extension cord but then decided to wait until the new wire arrives on Friday.
Ive launched rockets 3 times in the past week so probably won’t again until next week despite Wednesday promising lite winds.
Keep close control of that power lead. Since you're using a standard plug at one end(C13?, C14?...I forget), it's entirely possible that someone can plug it into 110v AC live and get quite the surprise on the other end. Not saying you shouldn't do that, just keep track of your cords.I use a 30 foot extension cord for my launch controller, works great. Easy to replace, large gauge wire, etc. Controller has a surface mount receptacle and I use extra computer power cords for the clip whip, cut off the IEC end and install gator clips.
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Electricians call that a widow maker.Keep close control of that power lead. Since you're using a standard plug at one end(C13?, C14?...I forget), it's entirely possible that someone can plug it into 110v AC live and get quite the surprise on the other end. Not saying you shouldn't do that, just keep track of your cords.
Thanks guys. I peeled away enough to get in there with a 1/2" drill bit. I surmise I had too much glue for the engine block causing too much friction. The heat from the motor probably adhered the case to the tube. I got too excited about trying out my new launch controller (thus the 6ft cable) and jammed the motor into the tube thinking that I could get it out later with pliers.
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Keep close control of that power lead. Since you're using a standard plug at one end(C13?, C14?...I forget), it's entirely possible that someone can plug it into 110v AC live and get quite the surprise on the other end. Not saying you shouldn't do that, just keep track of your cords.
True. The difficulty was that the PONG rocket is especially fragile so could only twist so much.I'm pretty late to this party, but as to the original topic, I use a lot of rebar around the yard to keep rocks where I want them on banks, borders, etc. Sometimes I have to pull one out. I've found that if I take a vice grip and twist it around a few times, I can then start twisting and pulling and out it comes, whereas a straight pull I may as well go grab an engine hoist or something, because it isn't moving otherwise.
Or suicide leads. I would really thing about not doing that.Electricians call that a widow maker.
Yeah, "suicide cable" is the term I've heard.Or suicide leads. I would really thing about not doing that.
You could try very slowly drilling it out starting with a small drill bit and working up the sizes bigger each time. The motor casing will relieve the pressure as the hole gets bigger. I did this a few times and it works. Do not do this with an unused motor. The propellent could ignite with a spark from the bit.Suggestions for removing a stuck engine? Can’t twist too hard or the body will break. Tried jamming a rod into the front but not a lot to catch on.
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Dont do this with an unused motor. A spark could ignite the motor.You could try very slowly drilling it out starting with a small drill bit and working up the sizes bigger each time. The motor casing will relieve the pressure as the hole gets bigger. I did this a few times and it works.
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