I was browsing the
'Coming Soon' section on the Estes website and ran across their new
29mm motor retainer. A pair will list for $8.99. I guess that will save you from cutting and grinding a pair from a 3/4" compression coupling ($3.67 at Home Depot). Actually, for a couple of extra bucks a rocket, it might be worth avoiding the mess. Ground PVC shaving get everywhere.
Having made mine by hand with a Dremel I think that $8.99 for 2 sets is not a bad price.
ReplyDeleteIf you had a lathe (like our friend Itchy) you could really crank out a bunch of these. Plus the inside diameter would be uniform instead of hand ground. I hogged out the inside a little too much on one attempt an you could see daylight between the threads.
$8.99 sure beats paying a LOT more for Aeropack.