I300T and I435T use a slower version of Blue Thunder. There is no Blue Thunder load for the 38/720 case (yet). The DMS I500T would be a close approximation.What is the propellant difference between I357T and I300T? They're both BT so why is one faster burning than the other? How about the BT loads for 240, 600, and 720 cases? Which is which?
HEI has been accomplished on offset core motors by chamfering the forward end of the forward grain, in a similar manner to the aft grain for through-the-nozzle igniter placement.Thanks Tony
I was looking at that drawing as well and the grain callouts in the BOM but was not sure what the slot width is and what the 3/4" slot width is referenced to. 3/4" from the edge of the grain OD?
Based on the section view of the motor, the grain perforation looks almost like a c-slot. If it is truly a moon burner and core is 3/4", any idea on the offset distance? I could scale it from the drawing but not 100% sure the drawing is accurate to the actual grain.
If it is a moon burner and the section view is correct. The central port doesn't align with the center of the closure so HEI will be a challenge for the method I was going to pursue.
Was combing google images hoping someone out there took a picture of a grain but didn't find anything.
There is no Blue Thunder load for the 38/720 case (yet).
Which version is the one avaliable on the RCS website? Is there 2 different burn rate propellants?I300T and I435T use a slower version of Blue Thunder. There is no Blue Thunder load for the 38/720 case (yet). The DMS I500T would be a close approximation.
Regular Blue Thunder, 8121T. There are two types.Which version is the one avaliable on the RCS website? Is there 2 different burn rate propellants?
Which motors use the 8121T and which motors use the other type? Based on your other post I assume the H242 and I357 use the 8121T? Is there other 38mm propellants that have different variations used in different reloads?Regular Blue Thunder, 8121T. There are two types.
I bought an I300T earlier in the year and flew it in my Wildman Jr. at MWP and was pleasantly surprised
M685 top grain: 3/4" diameter offset about 1/8" from edge.
View attachment 549852
HEI has been accomplished on offset core motors by chamfering the forward end of the forward grain, in a similar manner to the aft grain for through-the-nozzle igniter placement.
Yes. Slow White Lightning is used in some of the longer 38mm loads.Which motors use the 8121T and which motors use the other type? Based on your other post I assume the H242 and I357 use the 8121T? Is there other 38mm propellants that have different variations used in different reloads?
Thanks for letting us know, I’ll pass that on to the team!I just had a package of tubes and nozzles for the Hobbyline cases delivered with a big crease in the middle. Big thanks to the folks from RCS/Aerotech who took the care to package everything so nicely because there was no damage at all!
Back when you could order spare parts from Quest (alas spares have never returned to the new website), some body tubes I ordered arrived with the best packing I've ever seen for cardboard tubes. The packing was a work of art, and it would have been nigh impossible for the shipper to have damaged them. I was impressed.I just had a package of tubes and nozzles for the Hobbyline cases delivered with a big crease in the middle. Big thanks to the folks from RCS/Aerotech who took the care to package everything so nicely because there was no damage at all!
Not possible because of the stepped oring seats at the ends of the cases.Are there any plans regarding a 98mm RAS (Reload Adapter System)?
Those are extremely rare these days.Has anyone flown an 18mm E?View attachment 551726View attachment 551727
Has anyone flown an 18mm E?View attachment 551726View attachment 551727
I believe it is '89.Those have been around a while, and lots of people have flown them. What is the date code on that package...the 90's?
The year I graduated High School...as long as the igniter goes in and it lights its probably OK.I believe it is '89.
I am not sure which rocket I should spend it on but I would sure like to get more! I guess thats the way it is with good things.
Is that a 18x70mm casing?Has anyone flown an 18mm E?View attachment 551726View attachment 551727
When AeroTech first blister carded the mass-market motors in 1989 the print on the labels was too small.Those have been around a while, and lots of people have flown them. What is the date code on that package...the 90's?
Yes it is.Is that a 18x70mm casing?
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