Quite frankly, the Q-Jets burn with a rather unsatisfying, fairly quiet, hiss... at least the C6-3 goes WOOSH! It's one reason I consider it unfortunate that AT has discontinued the 18mm single use D's... but I'm not annoyed...
Thanks for the tip, I just got some QJets and haven’t flown them yet.Make sure the Qjet igniter is all the way to the front of the motor. Composites burn from the front of the core, if lit from the middle or end they might not build up enough pressure and will stay on the pad and burn.
Launched my replacement today on a C6-3 motor. A slight breeze blowing, maybe 5 mph. Beautiful flight and recovery, slight arcing near apogee.
Will try a Q-Jet C on the next flight. For higher flights and larger fields the Q-Jet D is perfect.
One thing I noticed: When loading the motor it is not fully seated at the first "stop". The retainer will not fully thread down and lock the fin can. When I twisted it the motor advanced down a further 1/8" or so and the retainer could be fully threaded down. I think that may be what has led to some of the errant flights that have been reported. Read and follow all instructions and addendums.
Cheers.
Quite frankly, the Q-Jets burn with a rather unsatisfying, fairly quiet, hiss... at least the C6-3 goes WOOSH! It's one reason I consider it unfortunate that AT has discontinued the 18mm single use D's... but I'm not annoyed...
But I love the thick black smoke from the Q-jets.
I like the sound *and* smoke from the Qjets. They are pleasingly different from BP motors, nice to have a change of pace.
Well, it's rocketry so you have to be alert, right?How much coffee did you have to drink that morning?
Anybody get one for Christmas?
https://estesrockets.com/product/071061-saturn-v-nose-cone-assembly/P.S.: I went back and actually found the nose code dangling from the tipy-top of a 150+ft tree, now that the leaves are gone. Who knows, maybe the chute shroud lines will rot in a year or two, and I might still recover it!
I got myself a new nose cone for Xmas (along with a dozen other Estes kits that were on sale)!
The old one had drifted into a forest after I broke my own cardinal rule, and used Estes-supplied elastic for shock cord. Total brain fart on my part.
Elastic promptly broke after a few flights, and the light nose cone drifted into the next zip code, while the heavy airframe came back ballistic, core-sampled, yet incurred no damage.
This airframe is gorgeous and indestructible !
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P.S.: I went back and actually found the nose code dangling from the tipy-top of a 150+ft tree, now that the leaves are gone. Who knows, maybe the chute shroud lines will rot in a year or two, and I might still recover it!
I do. It is fairly common practice to replace the Estes-supplied rubber with elastic, Kevlar, or a combination of both. In addition to the lack of longevity of the rubber, most folks like their shock cords to be longer than what Estes supplies.Do you usually replace the stock shock cords right out of the box?
Do you usually replace the stock shock cords right out of the box?
Have followed this thread, then bought a 1/200 Saturn V, then joined forum and would now like to make a post. I see no big deal in sliding the motor in and making sure it seats firmly at the front. When sliding motor in you can feel the edge at the top. If you are misaligned, move it a little and it will clear it and fit right in. Where you have to be careful is with the motor retainer ring. It is very easy to barely cross thread it just enough to where it is not flush against the clear fin unit. This in turn can cause a slight wobble. The thread used is large and it is very easy to cross thread just enough to cause problems when in flight.
I'd agree except when it's 80+ degrees and the humidity is same or worse. What was the temp and humidity when you flew yours?
We pulled one apart where we could see directly what was going on and found that the cardboard tube could swell enough that it had to be sanded some to get the motor into the recessed area (forward retention ring).
Not meant to sound rude: So, sand it a little for fit. These things are not multi million dollar machines really meant to go to the moon. They are to have fun with. I live in Houston Texas. It gets very hot and humid here.
Sure, but the original point was that it is very easy to get a motor it cooked if you are not aware of the defect. If Estes had simply made the forward retention ring a little deeper it would have been impossible to incorrectly install the motor. The problem is compounded by the fact that the rocket is underpowered using the recommend motor.
You are not being rude, but you are missing the point.Like I said, it's a $50.00 to $60.00 dollar rocket. I have no problem with the length of the forward retention ring. Again, not trying to be rude: If you dislike it so much just stop flying it.
....enough already....
Yeah. They fly great on C5-3s.I agree. Back to the rocket itself. Estes says that you can use a C5-3 engine in their new SLS model. Has anyone tried one of these in their 1/200 Saturn V ?
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