patelldp
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- Jan 23, 2009
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I assume a lot of you out there have Kosdon 38mm hardware from the great sell off from a couple of years ago when Frank passed away. Some came with internals, some didn't. If you're without a bulkhead or are unable to make or source appropriate delay grains, these are for you. I took it upon myself to modernize Frank's design slightly by doing the following:
You can buy delay and o-ring assemblies from Scott at www.LokiResearch.com, or full delay sticks and o-rings from RCS at www.rocketmotorparts.com. The delay well is 1" deep. I do not recommend using EX bulkheads for motor ejection, and therefore recommend installation of a delay with greased fore end and a bolt or eyebolt to prevent any blow-by.
I am asking $50 shipped each for these custom parts. If interest exceeds the 2 that I have made, more can be made to order.
- Same external dimensions as Franks original bulkheads, making them plug and play with what you have
- Reduced the delay cavity from 7/8" ID to 3/4" ID to accept Loki and Aerotech delays for tracking smoke
- Reduced the threaded portion (powder well for Frank) from 1/2-13 to 1/4-20
- A 3/32" hole passes through the cavity into the threaded portion to allow you to install the delay without compressing air in the cavity.
You can buy delay and o-ring assemblies from Scott at www.LokiResearch.com, or full delay sticks and o-rings from RCS at www.rocketmotorparts.com. The delay well is 1" deep. I do not recommend using EX bulkheads for motor ejection, and therefore recommend installation of a delay with greased fore end and a bolt or eyebolt to prevent any blow-by.
I am asking $50 shipped each for these custom parts. If interest exceeds the 2 that I have made, more can be made to order.