"Kurt" wrote in message news:978re.569$ snipped-for-privacy@newssvr17.news.prodigy.com...
[areo-tech ] don't have to have custom dies made..... hence the small gap when installed .....nuff said about that.......now the solution to your problem, which is really all you care about anyway.......having been in a similar situation here is what to do....get some common everyday wooden toothpicks......make sure the hole is clear......don't add the ejection powder until right before you fly ......you can pre-assemble the motor but don't add the ejection charge.....now right before you head to the pad ....seperate the two caps...pour a very small amount of powder into the ejection well take the toothpick and poke it [the powder into the hole ,this will make sure it comes into contact with the delay grain,insuring the ejection charge ignites] ......now slip the red cap, with the remainder of the powder over the well as instructed ......at this point, under no cicumstances turn the motor upside down.....install said motor in rocket by sliding rocket over motor ....this keeps the ejection charge in contact with the delay grain .....if you do tip it over the powder can "shift'' out of position due to the gap space in the cap and may not go back into contact with the de-lay due to the small size of hole.......this is not a problem with larger motors due to the larger hole size in the casing .....with such a small hole in the hobby size motors the powder grain size is such that it can jam together and not settle back into the hole .....kinda like when those 3 minute egg timers with the sand in them do.....you have probably seen that.... the sand clots together and you have to tap it,to get it flowing again... it sounds more difficult than it really is.....since using this technique, I haven't had a ejection charge fail to lite.....lighting on time though ,is another matter, which I'm sure, my brother rocketeers can relate to .......... just remember.....once the ejection charge is in....don't invert the motor or the rocket with installed motor....you shouldn;t have any further problems.....once again this seems to be a problem only with the smaller 18mm and 24mm casings, i haven't had it with the 29mm ..... the smaller they are the touchier they seem to be....hope this helps...... jim h- Vote on answer
- posted
18 years ago