tag:blogger.com,1999:blog-3612012025300219489.post772417304238413129..comments2024-03-28T11:34:11.082-04:00Comments on Model Rocket Building: Estes Space Corps Corvette Class, #7281 Build, Part 6, Details & DecalsChris Michielssenhttp://www.blogger.com/profile/06907925631001358372noreply@blogger.comBlogger3125tag:blogger.com,1999:blog-3612012025300219489.post-21974086092636516592019-11-21T13:22:20.396-05:002019-11-21T13:22:20.396-05:00One advantage over the motor hook is you don't...One advantage over the motor hook is you don't have to worry about the problem of the motor mount tube tearing. Adding thrust ring on the forward end of the hook would get rid of the problem during thrust phase, but ejection could result in tearing (at ejection the motor "kicks" backwards, being stopped from exiting out the back end by the motor hook -- but the forward end of the motor hook is only being stopped by the wall of the motor mount tube). Workarounds might include:<br />a. lengthened motor hook where the front end goes in front of the thrust ring. Downside would be that it's much easier to goof up if you're not careful.<br />b. turn the forward bend of the motor hook out (i.e. rather than the front end of hook going into motor mount tube, it sticks outward) and have it engage against a centering ring. If you sandwich this end between two centering rings, the hook won't get pulled out nor pushed in (and as mentioned previously, the thrust ring prevents the motor from moving forward). Downside of course is that this only works for models where the airframe tube is large enough to require centering rings (where difference between the outer radius of motor mount tube and the inside radius of the airframe tube is at least as much as the size of the upturned end of the motor hook).Naoto Kimurahttps://www.blogger.com/profile/02762712349150120196noreply@blogger.comtag:blogger.com,1999:blog-3612012025300219489.post-58099121589060338822019-11-20T21:44:57.834-05:002019-11-20T21:44:57.834-05:00Hi Naoto,
The new screw on retainers work very wel...Hi Naoto,<br />The new screw on retainers work very well and look good. You do have to put in the igniters after the engine is slid in and the outside ring is screwed on tho -Chris Michielssenhttps://www.blogger.com/profile/06907925631001358372noreply@blogger.comtag:blogger.com,1999:blog-3612012025300219489.post-42013453313830391712019-11-18T15:57:35.581-05:002019-11-18T15:57:35.581-05:00I've not yet tried the screw-on retainers -- b...I've not yet tried the screw-on retainers -- but I am liking them. Will have to have to give these a spin -- looks to be a nice alternative the usual engine hook. As an added plus the ribbed cap does have a bit of "jet exhaust" look to them -- so not only could they be functional, they might look nice as a styling element (especially in "jet fighter" and "space fighter" type models).Naoto Kimurahttps://www.blogger.com/profile/02762712349150120196noreply@blogger.com