Rocketman R7 chute

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havoc821

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Will the R7 fit into a 3inch airframe and how much space will it take up inside the airframe (length)? Thanks!

Also how do you order custom centering rings from BMS? I sent them an email but no reply yet. Thanks!
 

joepolicy

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Also how do you order custom centering rings from BMS? I sent them an email but no reply yet. Thanks!
You need to download the Excel spreadsheet from their website :

https://www.balsamachining.com/bms_calculator.xls

They also have a 1 page .pdf file the explains how to fill out the spreadsheet, you can find it at:

https://www.balsamachining.com/fins&rings.pdf

When you will out the spreadsheet, you will be given a total cost. E-mail the completed spreadsheet to [email protected] and pay them. I usually pay them with PayPal.

There have been some recent delays ordering from them, but nothing more then a week for me, and the quality is worth it. I generally get a response from them in 2-3 days. I had to use their alternate e-mail address because their ISP apparently blocks e-mails from Germany, but that is not their fault!
 

Justin Horne

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We've got an R9 and it goes into a 3 inch tube, so yes, i would say an R7 will fit.:)
 

havoc821

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Thanks, I will download that tonight. How much space did the R9 take up? As in length that is. I want to msake sure I have enough room for everything in the main deployment bay of my rocket. Thanks again guys!
 

rocket trike

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To get your centering rings you might want to try our own Rocketsonly at www.rocketguts.com They are a group of students raising money for their TRF. I love to see things like this. They also do a great job on their work they are also cheap. So give them a try you will not be disapointed.

Tom
 

Justin Horne

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Well, I just went and packed the chute small enough to fit (its a squeeze in a 3") and the chute took up just under 10 inches of bay. Thankfully the talon has probably near 20, so it fits fine.:) Just for my own curiosity, what kind of rocket are you building?
:)
 

havoc821

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2stage high power rocket. 3 inch diameter, upperstage, ~6ft tall. Booster 18in, total ~7.5' tall. 54mm MMT in each stage. Dual deploy. Liftoff for first flight I284 to I284. More info once I get more money to start.
 
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