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  #31  
Old 07-29-2019, 08:50 AM
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JumpJet JumpJet is offline
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Quote:
the Multi-Roc, through I was surprised to find a balsa nose block at the base of the payload section on that model


A new display model of the Multi Rock has not been made yet so the one seen was the original display model from when it was introduced back in the day.

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  #32  
Old 07-29-2019, 09:19 AM
stefanj stefanj is offline
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I would be SO happy for a high-thrust D booster.

Like the trial-manufactured D38.

A high-thrust E or F would be nice too. The F15-0 is kind of flabby.
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  #33  
Old 07-29-2019, 09:54 AM
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A D38 booster would be great.
Would capably boost a substantially massive rocket.
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  #34  
Old 07-29-2019, 01:44 PM
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Earl Earl is offline
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I would guess -- barring an Estes entrance into the composite field -- that a high-thrust black powder motor in the D thru F range is what we'll be seeing. Probably something in the lower end of that scale, say D or E.

A good E60 that doesn't explode (a la the old FSI E60's) would be nice.

Earl
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  #35  
Old 07-29-2019, 03:03 PM
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Would be glad to see any hi-thrust port-burning B through E BP SU motor.
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When in doubt, WHACK the GAS and DITCH the brake !!!

Yes, there is such a thing as NORMAL
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ALL systems are GO for MAYHEM, CHAOS, and HAVOC !
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  #36  
Old 08-11-2019, 08:41 AM
PaulK PaulK is offline
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Quote:
Originally Posted by Scott_650
A few things from the forum at NARAM last night - a new boost glider that appeared to have some Shrox-like characteristics, a single stage SAM 83(?) that looks like a companion to the Sasha, confirmation that the current BLACK POWDER 29mm motors are as big as they’re going to get BUT a very strong hint that more powerful PSII motors are coming, and that new PSII builder kits will be upscale versions of classic Estes/Centuri designs. Plus it sounded like B14s are coming back. Oh, and a little fly and forget mini rocket called the Luna Bug - think Mosquito with curved footpad equipped fins.
Upscale classic kits for the PSII line would be great. If the upscale is modest, like the Interceptor-E, they could work nicely with the current E16/F15 motors; If reliable higher thrust BP motors can be made, that's even better.

Any talk of improving the BP starters?
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  #37  
Old 08-12-2019, 04:25 PM
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Quote:
Originally Posted by PaulK
Upscale classic kits for the PSII line would be great. If the upscale is modest, like the Interceptor-E, they could work nicely with the current E16/F15 motors; If reliable higher thrust BP motors can be made, that's even better.

Any talk of improving the BP starters?


I doubt it. Regulation is too crazy. But, you can enhance them. The clear coating on them is water-soluble. I soak them for about 30 minutes, and the coating turns to a goo that wipes off easily.

I then mix FFFg BP with NC lacquer, dip them, and hang to dry. These work great!

No BP? Just dipping in NC lacquer works well. I bought my NC lacquer from Firefox, but you can make your own by dissolving ping pong balls in acetone. I bought the “better” ping pong balls at Walmart, but the cheap ones are probably fine.

The commercially available NC lacquer is about $16 a quart, which for me is more than a lifetime supply. If you love to tinker, try the homemade stuff.

Firefox ignition supplies, including pyrogen kits:

http://www.firefox-fx.com/ignition.htm

Finally, ematches fit in nozzle of 24mm and 29mm engines and are excellent igniters for BP. I’ve not tried them on 18mm but that recent launch of 5000 rockets used ematches under each motor. They do throw a flame, so apparently they are very good for 18mm engines, too.
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Last edited by LeeR : 08-12-2019 at 04:40 PM.
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  #38  
Old 08-13-2019, 07:29 AM
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tbzep tbzep is offline
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Quote:
Originally Posted by LeeR
The commercially available NC lacquer is about $16 a quart, which for me is more than a lifetime supply. If you love to tinker, try the homemade stuff.

Fingernail polish is nitro cellulose lacquer and you can even pick colors to match your rockets. Just don't let your wife catch you. If you just want to try a few, that might be the way to go.
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  #39  
Old 08-13-2019, 11:07 AM
BigRIJoe BigRIJoe is offline
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Quote:
Originally Posted by LeeR
Finally, ematches fit in nozzle of 24mm and 29mm engines and are excellent igniters for BP. I’ve not tried them on 18mm but that recent launch of 5000 rockets used ematches under each motor. They do throw a flame, so apparently they are very good for 18mm engines, too.


Could you recommend a specific e-match,please?
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  #40  
Old 08-13-2019, 11:24 AM
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Aren't E-matches BATFE regulated now requiring a LEUP ?
A really effective igniter can be made by stuffing a 1" piece of cannon/visco fuse in the engine nozzle. Wrap the base of the fuse with a 2" piece of bare nichrome to ignite the fuse electrically.
Fuse does not even have to touch the grain. Sparks from the end shooting upward WILL ignite BP propellant.
Back in the 80s and 90s I used to ignite Composite Dynamics AP E and F engines the same way.
I vividly remember a launch in around 1990 where I gave a Composite Dynamics E to a buddy to launch his Maxi Alpha 3. Ripped the fins KLEEN OFF !
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When in doubt, WHACK the GAS and DITCH the brake !!!

Yes, there is such a thing as NORMAL
, if you have to ask what is "NORMAL" , you probably aren't !

Failure may not be an OPTION, but it is ALWAYS a POSSIBILITY.
ALL systems are GO for MAYHEM, CHAOS, and HAVOC !
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