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Old 10-12-2013, 01:12 PM
Initiator001 Initiator001 is offline
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Default Estes Majestic PS II E2X Kit

I have assembled an Estes Majestic kit.

This is the second Estes PS II E2X kit I have finished.

It was easier to assemble than my previous PS II E2X model (Ascender) due to the fact that the fins halves are already glued together.

I assembled the model with CA and 30 minute epoxy adhesives. My only alteration to the kit was the addition of a Semroc ejection baffle (EB-20). I had to sand down the rings a little to get the baffle to fit in the body tube.

I look forward to flying it soon.
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Old 10-12-2013, 05:07 PM
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BEC BEC is offline
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Glad to know that an EB-20 can be made to fit these. Need to retrofit my Majestic, or if not that put one in an Ascender when I get that one.
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Old 10-12-2013, 05:56 PM
frognbuff frognbuff is offline
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Have you flown a Majestic yet? I'm wondering why E15-6 is recommended but E15-8 is not. The Majestic is very light, and I'm surprised the extra two seconds of delay make such a difference. Then again, I haven't flown an E15 or F15 yet.
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Old 10-13-2013, 08:28 AM
snaquin snaquin is offline
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Quote:
Originally Posted by frognbuff
Have you flown a Majestic yet? I'm wondering why E15-6 is recommended but E15-8 is not. The Majestic is very light, and I'm surprised the extra two seconds of delay make such a difference. Then again, I haven't flown an E15 or F15 yet.


Bearing in mind that OpenRocket is just an estimation and that I also have just the one flight on my Majestic with the F15 engine and not the E16, refer to the first image in my last post for a possible answer.

The 6 sec delay shows 8.38 ft/s velocity at deployment which is very good. With all the same conditions the 8 sec delays shows 40.1 ft/s velocity at deployment so according to this estimation, the extra two seconds of delay do make a difference.

.
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🚀 In Build Queue: Estes Doorknob w/Vander-Burn Rocketry Upgrade Kit [Sport Decor], Semroc Centurion-F, Semroc Egg Crate
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Old 10-13-2013, 10:44 AM
frognbuff frognbuff is offline
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Quote:
Originally Posted by snaquin
Bearing in mind that OpenRocket is just an estimation and that I also have just the one flight on my Majestic with the F15 engine and not the E16, refer to the first image in my last post for a possible answer.

The 6 sec delay shows 8.38 ft/s velocity at deployment which is very good. With all the same conditions the 8 sec delays shows 40.1 ft/s velocity at deployment so according to this estimation, the extra two seconds of delay do make a difference.

.

Cool - thanks!
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Old 10-13-2013, 08:53 PM
snaquin snaquin is offline
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Out of the five F15 engines I burned yesterday only the F15-6 engine that was used for the Majestic fight had more nozzle erosion and more soot on the nozzle end, also leaving a small ring of soot around the end of the case. These two engines came from the same package.

The engine on the left was used on the Ascender flight. The engine on the right was used on the Majestic flight. This motor was also the only one that I used that had to be forced out from the front side with a rod. The other motors could be shaken out or pulled out easily from the engine mount tube.

Did not appear to have any thrust vectoring in the photos.

Not sure if any of this helps .... I'm just making a post flight observance.

.
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🚀 In Construction: Der Blue Maxx/Minie-Magg 5.5” & Vander-Burn MDRM Clone w/Stickershock23 Custom Decals
🚀 In Paint & Detail: USR Banshee
🚀 In Build Queue: Estes Doorknob w/Vander-Burn Rocketry Upgrade Kit [Sport Decor], Semroc Centurion-F, Semroc Egg Crate
🚀 In Repair: SLS Lil’ Hustler, SLS Aero-Dart 1969 Trim
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Old 10-13-2013, 01:43 AM
Initiator001 Initiator001 is offline
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Quote:
Originally Posted by BEC
Glad to know that an EB-20 can be made to fit these. Need to retrofit my Majestic, or if not that put one in an Ascender when I get that one.


You will need to 'notch' the baffle rings in order to get it to slide past the shock cord mount.
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Old 10-13-2013, 01:46 AM
Initiator001 Initiator001 is offline
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Sorry to hear about your Majestic 'flight', Steve.

I'll be flying mine next Sunday. I will post pictures.

BTW, nice hat.
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  #9  
Old 10-13-2013, 07:49 AM
snaquin snaquin is offline
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Quote:
Originally Posted by Initiator001
Sorry to hear about your Majestic 'flight', Steve.

I'll be flying mine next Sunday. I will post pictures.

BTW, nice hat.


It's become my standard launch hat. I forgot to stick my NAR and Tripoli pins in it before I left the house though.

I have several hats I could reach for on launch day but I always seem to grab the EnerJet hat!

Also good to know about the EB-20. I figured that was the one you used from one of your other posts. I need to pick up a few from Semroc.



.
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TRA# 677 L2
NAR# 85518 L2
SAM# 0052

🚀 In Construction: Der Blue Maxx/Minie-Magg 5.5” & Vander-Burn MDRM Clone w/Stickershock23 Custom Decals
🚀 In Paint & Detail: USR Banshee
🚀 In Build Queue: Estes Doorknob w/Vander-Burn Rocketry Upgrade Kit [Sport Decor], Semroc Centurion-F, Semroc Egg Crate
🚀 In Repair: SLS Lil’ Hustler, SLS Aero-Dart 1969 Trim
🚀 Stay Tuned For Fall 2021 Launch Dates
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  #10  
Old 10-14-2013, 12:48 AM
Initiator001 Initiator001 is offline
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Quote:
Originally Posted by snaquin
Also good to know about the EB-20. I figured that was the one you used from one of your other posts. I need to pick up a few from Semroc.



.


To prevent any backpressure issues with the EB-20 Semroc baffles I punch extra holes in the baffles.

I haven't notice any burning/soot on the parachutes.
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