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    Wildman Jr question

    Ok, so I just loaded up the the model in shortened configuration with a small chute and a 38mm loaded motor weight of about 800g which is well into the "J" range. CG was measured at 31.13 from nose tip. Rocksim has CP at 34.43 from nose tip for a gap of 3.3 inches (over a body diameter). With...
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    Wildman Jr question

    Has anybody flown theirs with a full 38mm I motor (or larger) but without the avbay and payload section? This would be worst case for me as far as CP vs CG and am in the process of figuring out if I should add a little nose weight before I seal up the nosecone shoulder. I know I could mock it...
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    2 unrelated questions re: Conformal Rail Guide Spacing and vent hole size & location

    Question# 1 - Conformal Rail Guide Spacing: Since conformal rail guides are not tapped into the centering rings of the motor tube, it logically follows that there is a lot more freedom with regard to their placement and spacing. So what are schools of thought out there on the subject? I just...
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    Sem-ROCKS!

    Never had a problem with ANY rocket supplier. Semroc especially goes the extra mile!
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    Cloning from JimZ plans

    Ok, I used "Paint" and saw where the resolution was set to 300 dpi, printed it with no scaling and it seems to be about right. Pretty easy. Thanks for the help, Don
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    Cloning from JimZ plans

    I knew about the .pdf's and those usually aren't a problem, most of the plans out there are scanned to TIFF files so that's good to know, but why is 300dpi the correct setting for these TIFF scans? Can you explain that a little? Thanks, Don
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    Cloning from JimZ plans

    When I clone a classic kit, I'm pretty particular about getting it as close as possible to the original.
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    Cloning from JimZ plans

    I have a question when it comes to cloning classic kits from JimZ's plans or anyone else's for that matter. When it comes to the pattern sheets, they often don't print at the right scale and since a reference (such as a ruler) is not included in the scans, how do you come up with a proper scale...
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    RockSim Mass and Cg overides question

    I can measure the actual Cg and Mass very easily, I just wanted to know what RockSim expects to be included in those overides.
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    RockSim Mass and Cg overides question

    I'm assuming the mass and Cg overides are without motor and RMS hardware but including any motor mount adapters (e.g. 54-38mm) required... Is that correct? Thanks, Don
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    Estes "Classic Series" Satellite Interceptor gripe...

    I would assume the "Classic Series" to aimed at us BARs. And don't get me wrong, I'm really not trying to be too hard on Estes here. In fact I LOVE what they're doing now with kits like the QCC Explorer, the new midpower line that's coming soon, and all the classic re-releases. I think...
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    Estes "Classic Series" Satellite Interceptor gripe...

    Taking back my thread... I'll concede after looking at the side by side that I was wrong about the decal color. It appears to be the same. But it does look darker in the catalog. As for the tail cone, if they had stopped making the part, then fine; I could understand not investing in a...
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    Estes "Classic Series" Satellite Interceptor gripe...

    Maybe JumpJet (John) can answer this one... Why did Estes re-release this kit with a balsa nose and no tailcone? I believe PNC-55BB is still a part that Estes makes as it is used on the Crossfire which is a current kit. Also, from the 1978 catalog picture, it appears that the original...
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    Electronics in Nike Nosecone

    Is it really important where you place the charge? I went with .5" PVC end caps, as charge cups, and placed them on the bulkhead at the base of the nose cone. I was planning on just wiring the charges from the altimeters through the bulkhead. Anyway, I thought it was mostly the pressure that...
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    Cd for Performance Rocketry 4" Nike Smoke...

    Does anyone have a measured Cd for the Performance Rocketry 4" Nike Smoke with filleted fins and a standard rattle can paint finish? Obviously when I say "measured" I don't mean in a wind tunnel, just someone that has fine tuned their Cd with altimeter data. Or barring that, does anyone have a...
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    Semroc Hydra One Build

    Looks great so far Dave. Gotta agree on the Semroc kits... They're awesome! Looking forward to reading more soon, Don
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    Electronics in Nike Nosecone

    Whoops! Sorry, I see that now... What was the source of your data then? Was the vent hole similarly placed?
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    Electronics in Nike Nosecone

    So which motor did you end up using? Also how did you set up your dual deploy?
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    Electronics in Nike Nosecone

    I'm VERY anxious to know how the vent hole worked out for you in that location. I'm doing the same thing with my N.S. although I don't have access to a milling machine so my av-bay is good ole' plywood. I had the same concern about the vent hole being far enough down to avoid any disturbed...
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    Weight sanity check on 4" PR Nike Smoke...

    Whoops! Still learning RockSim... I had the mass overide set for my measured weight with the motor, so my previously stated altitudes were incorrect. I reset the mass overide to the measured dry weight and re-ran the simulations... The corrected alts are: 1638ft on the I211W 3935ft...
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