#1
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Where can I buy cluster centering rings these days?
Fliskits gone. Sunward basically out of the picture. Nothing listed on eRockets.
Who are the go-to guys/gals for cluster CRs now? |
#2
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Rocketarium:
https://www.rocketarium.com/Build/Cluster-Mounts Rocket Garden still has Fliskit cluster mounts: http://therocketgarden.com/FlisKits/FlisKits_index.htm Erockets has a few, look under Parts for Rockets/Centering rings: http://www.erockets.biz/semroc-cent...-sem-ra-4x5-60/ http://www.erockets.biz/bt-70-1/ http://www.erockets.biz/bt-80-1/ And BRS still has Sunward cluster mounts: https://brshobbies.com/cluster-engine-mounts/ Or make your own and hone your scratch buiilding skills! Cheers. |
#3
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I found plenty of cluster rings on eRockets.
Here is the page for BT-80, there are 4 listings. Make sure you read description. The pictures on some sizes don’t show a cluster ring. http://www.erockets.biz/bt-80-1/ Also check BMS. balsamachining.com
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Lee Reep NAR 55948 Projects: Semroc Saturn 1B, Ken Foss Designs Mini Satellite Interceptor In the Paint Shop: Nothing! Too cold! Launch-Ready: Farside-X, Maxi Honest John, Super Scamp |
#4
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I posted same time as BARGeezer, forgot about Rocketarium. Looks like their BT-80 4x24mm mount has a 3D printed motor hook retainer. Cool!
A bit off-topic, I use their 18mm and 24mm motor retainers for my RMS motor hardware. Really nice! Finally, a favorite way for me to hold cluster motors. Center mounted threaded insert, washer and capscrew holds motors. This is an upscaled Super Cobra, 4 x 24mm motors, in a BT-80. CRs from BMS. Washer was scalloped after construction started.
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Lee Reep NAR 55948 Projects: Semroc Saturn 1B, Ken Foss Designs Mini Satellite Interceptor In the Paint Shop: Nothing! Too cold! Launch-Ready: Farside-X, Maxi Honest John, Super Scamp |
#5
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I use a similar system on my LOC Viper. It's just an 8-32 machine screw with the head removed and a wing nut/washer. I like your allen bolt idea, it has a much cleaner look.
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#6
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Andy Jackson Aerospace Speciality Products NAR # 14575 TRA # 1191 http://www.asp-rocketry.com |
#7
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I'm always in the market for a two D cluster mount, ST-20.
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Just completed: Estes Cherokee-E, Estes Multi-Roc. Current project: Painting the roll pattern on my new Ventris build, gifted me by the estimable Dr. Houchin. |
#8
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Don't use them. Use cluster bulkheads and sufficiently/minimally long motor tubes.
http://v-serv.com/usr/kits/tall_tail_10_12.jpg http://v-serv.com/usr/kits/tall_tail_10_13.jpg Just Jerry http://v-serv.com/usr/instaship-visual.htm 2.25" Tridents only 3 left at the ALPHA version price $80. http://forums.rocketshoppe.com/showthread.php?t=17675 |
#9
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Quote:
Andy, Glad you posted. You have really good prices!
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Lee Reep NAR 55948 Projects: Semroc Saturn 1B, Ken Foss Designs Mini Satellite Interceptor In the Paint Shop: Nothing! Too cold! Launch-Ready: Farside-X, Maxi Honest John, Super Scamp |
#10
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Thanks for the tips, gentlemen. It looks like Rocketarium and BRS have what I need. I've been looking for a central motor with 4-6 outer motors.
You know, I looked all over erockets at the CR pages and didn't see them. I think I must have read the 3x50 etc as being a packet of 3 rather than cluster of 3. |
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