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  #21  
Old 07-25-2020, 09:29 AM
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5x7 5x7 is offline
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Quote:
Originally Posted by SEL
FYI: Be prepared for some scorching on the business end:


That looks awesome!
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  #22  
Old 07-25-2020, 10:23 AM
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Quote:
Originally Posted by ghrocketman
SOME Scorching ???
Good grief, that thing is TORCHED.


Some say I’m a master at understatement ...
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  #23  
Old 07-25-2020, 11:25 AM
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Well, that WAS MASTERFULLY understated.
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When in doubt, WHACK the GAS and DITCH the brake !!!
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If you are NOT FLYING LOW in the left lane, you need to GET THE #$&@ OUT of it !

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  #24  
Old 07-26-2020, 04:04 PM
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Quote:
Originally Posted by SEL
FYI: Be prepared for some scorching on the business end:
OUCH!

Oh and SEL you misspelled *torching* ..... it’s not spelled *scorching*
Okay SEL ... so now I’m concerned. I made the holes in the seven 18mm motor tubes per the instructions. There will be a tiny bit of space between the completely assembled motor mount assembly and the ID of the main airframe tubing judging from my centering ring OD and the back view your burnt toast business end photo.

I can’t imagine the hot gasses from clusters of 18mm zero delay black power motors venting through those 1/4” diameter holes in such a small space and out the rear not causing damage initially and certainly on repeated flights. I am thinking of pouring an epoxy plug into the end of any zero delay black powder motors that I use in the 18mm outboards and if I use say any Quest D16 composites remove the ejection charge and epoxy plug those as well to avoid a torch fest ...

If epoxy plugging the motors would be considered a motor mod I would fly either before the range officially opened or after the range officially closed for the day or on an EX day.

Any suggestions? Bueller? Bueller? ... Anyone? Anyone?

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Steve Naquin
TRA# 677 L2
NAR# 85518 L2
SAM# 0052

🚀 In Construction: MINI KATANA & Reduced Size MINI KATANA 418
🚀 In Paint & Detail: USR Banshee
🚀 In Build Queue: InFlight A-20 Demon, SSRS/Crown Upscale Lasor “163”
🚀 In Repair: Semroc SLS Lil’ Hustler, Semroc SLS Aero-Dart 1969 Trim
🚀 Launch Countdown: Coming Soon
🚀 Upcoming Launch: “High Cotton” September 2020 Winnsboro, LA
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  #25  
Old 07-26-2020, 06:48 PM
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ghrocketman ghrocketman is offline
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Put a balsa plug ahead of the motors and EJECT them
__________________
When in doubt, WHACK the GAS and DITCH the brake !!!
No DIRECT and MEASURABLE Harm=NO Foul advocate

If you are NOT FLYING LOW in the left lane, you need to GET THE #$&@ OUT of it !

Yes, there is such a thing as NORMAL
, if you have to ask, you probably aren't
!
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  #26  
Old 07-29-2020, 08:16 PM
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Well, it took a month to get here because of the D16’s but I got my Quad Runner to bash for the other build. Almost feel sorry doing that my first impression is that it’s a very well thought out kit. I’m pushing this on the back burner for now I want to finish my MINI KATANA first and the Quad Runner / MINI KATANA 418 at a later date. I need to update my signature our club put out launch dates and rain dates for the fall season unless COVID-19 interrupts our flying season.

Saw on the news yesterday Louisiana leads #1 with COVID-19 in the USA per capita so no telling what could happen
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__________________
Steve Naquin
TRA# 677 L2
NAR# 85518 L2
SAM# 0052

🚀 In Construction: MINI KATANA & Reduced Size MINI KATANA 418
🚀 In Paint & Detail: USR Banshee
🚀 In Build Queue: InFlight A-20 Demon, SSRS/Crown Upscale Lasor “163”
🚀 In Repair: Semroc SLS Lil’ Hustler, Semroc SLS Aero-Dart 1969 Trim
🚀 Launch Countdown: Coming Soon
🚀 Upcoming Launch: “High Cotton” September 2020 Winnsboro, LA
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  #27  
Old 07-29-2020, 08:20 PM
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Quote:
Originally Posted by ghrocketman
Put a balsa plug ahead of the motors and EJECT them
If I were on my own property I could use short delays and do that however one year at our club launch a sparky motor caused a bad fire on the field so I doubt they will allow that. They no longer allow sparky motors because of the fire.

I am leaning towards plugging zero delay motors with epoxy and flying before or after our range opens or on the EX day.
__________________
Steve Naquin
TRA# 677 L2
NAR# 85518 L2
SAM# 0052

🚀 In Construction: MINI KATANA & Reduced Size MINI KATANA 418
🚀 In Paint & Detail: USR Banshee
🚀 In Build Queue: InFlight A-20 Demon, SSRS/Crown Upscale Lasor “163”
🚀 In Repair: Semroc SLS Lil’ Hustler, Semroc SLS Aero-Dart 1969 Trim
🚀 Launch Countdown: Coming Soon
🚀 Upcoming Launch: “High Cotton” September 2020 Winnsboro, LA
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  #28  
Old Yesterday, 06:53 PM
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I have been very busy with work for the last two weeks but I made some progress
I used the 18mm standard engine casing from my fin alignment guide to set the seven thrust rings 2.5” deep into the seven motor mount tubes. That lands them just below the vent holes. With an Estes A, B or C in each mount you would have 1/2” of space left in the mounts between the front of the engine and the centering ring but with the ejection charge well on the Q-jet D16 those fit with very little space there. With Q-jet D-16’s I’m going to remove the ejection charges and plug them. I did not use a thrust ring in the center 24mm mount so I wouldn’t limit any motor length selections.

Motor mount is finished but haven’t glued the forward centering ring on yet. I used Gorilla wood glue for all the bonding. Super strong stuff. I will use a cable mount through the front centering ring same as the original kit. I have some 1.8mm vinyl coated stainless steel cable with 2.2mm double ferrule crimps and a crimping tool to set the loop in each end. I will use 30 min epoxy when I bond the motor mount in the body tube. That way I will have enough time to get a good ring of epoxy ahead of the front centering ring and as I slide the mount in also put a bit more epoxy to be pushed up ahead of the second centering ring to get a good ring of epoxy there too.

I cut 10” off the T80H tube to get the required 24” for the main body tube. That took a LOT of passes and some patience with the vintage #6 X-acto to get through that thick walled tube. I built up a tape ring around the tube and got a perfectly cut tube and didn’t even need to sand it! I still want to coat just the exposed ends of all motor mount tubes and both ends of the body tube with a little thin CA.
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__________________
Steve Naquin
TRA# 677 L2
NAR# 85518 L2
SAM# 0052

🚀 In Construction: MINI KATANA & Reduced Size MINI KATANA 418
🚀 In Paint & Detail: USR Banshee
🚀 In Build Queue: InFlight A-20 Demon, SSRS/Crown Upscale Lasor “163”
🚀 In Repair: Semroc SLS Lil’ Hustler, Semroc SLS Aero-Dart 1969 Trim
🚀 Launch Countdown: Coming Soon
🚀 Upcoming Launch: “High Cotton” September 2020 Winnsboro, LA

Last edited by snaquin : Yesterday at 07:30 PM.
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