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  #51  
Old 01-13-2011, 06:15 AM
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billspad billspad is offline
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Quote:
Originally Posted by Chas Russell
ghrocketman said: "I'd bet if you tranport them to NARAM and gave samples out to a select few for private evaluation at the end of the next NARAM you would get some feedback shortly afterward."

Actually, SEMROC could demo the motors with S&T approval. At NARAM-11 FSI flew a modify E5 that had the separate charges and delays like the motor Carl mentioned early in this thread. I was there and it was interesting. I believe it was mentioned in the N11 coverage in Model Rocketry Magazine. Quest had a few D8 motors that were flown at the last NARAM.

I agree with Ltvscout, ROAD TRIP!

Chas


He could but he'd better start now trying to get approval. Demo's have to be approved by the NAR President and he doesn't like them. I tried to get the NAR Board to change that so S & T could approve them (the way it used to be) and got shot down twice. Ironically, the only demo I can recall in the last twenty NARAM's was one that S & T refused to approve (it was a sparky on a dry field) and we got over ruled by Trip. It started a fire. The Quest D8's were certified before NARAM.
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  #52  
Old 01-13-2011, 06:50 AM
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blackshire blackshire is offline
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Quote:
Originally Posted by billspad
He could but he'd better start now trying to get approval. Demo's have to be approved by the NAR President and he doesn't like them. I tried to get the NAR Board to change that so S & T could approve them (the way it used to be) and got shot down twice. Ironically, the only demo I can recall in the last twenty NARAM's was one that S & T refused to approve (it was a sparky on a dry field) and we got over ruled by Trip. It started a fire. The Quest D8's were certified before NARAM.
Well, fake Quest self-adhesive motor labels are pretty easy to print up at home... :-)
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  #53  
Old 01-13-2011, 08:01 AM
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Solomoriah Solomoriah is offline
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Quote:
Originally Posted by tbzep
I don't know if I can afford what I chose, but I'd sure like to give it a shot.

Yeah, me too.
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  #54  
Old 02-03-2011, 12:23 PM
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Chas Russell Chas Russell is offline
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Carl,

Any updates for us minions? Also, what are your thoughts and plans for igniters?

Thanks,
Chas
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  #55  
Old 07-19-2011, 11:02 PM
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Carl@Semroc Carl@Semroc is offline
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The input here has been invaluable!

I have removed the Carlisle 13mm x 2.25" for now. Black Powder is just not as energetic as it was in the 60's. It is impossible to get a full 5 N-sec B engine with a delay in that package. I am concentrating on 15mm x 2.25" for the full B. I need to put some of the old MPC B3 engine on the stand. They probably were short as well. The Centuri A4-4 engines I tested were 1.7 N-sec with 2 second delay, so I tend to doubt some of the early documentation. Our goal is to call the engines what they are.

The 4.5" long engines were not as popular as I thought they would be, so they are gone from the survey as well. Since that length requires a whole new machine, the extra 8% in revenue (from the survey) would not be worth it until "Mabelette I" (christened by Vern) has made enough to pay for a sister. A long burn D has limited use anyway. The full E might justify it in the future since it would be just under the Estes E9 in average thrust, but have an even longer burn.

We have been doing most of our work fitting Mabelette for 10mm, but have all the parts to change over to 18mm made and tested. We hoped to have some samples of the 10mm to take to NARAM, but had to release new kits to keep a revenue stream instead. Plans are to do them first and have them for the FAI team to use for testing.

Even though the Retro (Mable I) engines are not popular, I will probably do them as anniversary specials or other special occasions, but they are also removed from the survey for now.
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  #56  
Old 07-21-2011, 10:19 AM
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ghrocketman ghrocketman is offline
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Carl,
PLEASE make the first run of 18mm motors B14's !!!!!!
I will gladly buy at least 10 packs of the first run.

How close are new 18mm motors to reality ?
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  #57  
Old 07-21-2011, 10:25 AM
jetlag jetlag is offline
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and I'll buy the next 10+++!!!

Allen
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  #58  
Old 07-27-2011, 05:16 AM
BigRIJoe BigRIJoe is offline
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and put me down for the next 10!
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  #59  
Old 07-27-2011, 02:29 PM
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And just think, if you're a SAM + NAR you'll get them for 20% off!!

I'll go for a few packs too!

IMASAM 216
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  #60  
Old 09-27-2011, 03:11 PM
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Carl@Semroc Carl@Semroc is offline
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Default New viewer and engine testing results

There are some new items on the Engine Survey page. Qualification testing on the Hybrid Port engines is complete and posted. Results for the 1/2A4, A7, 3/4B7, B7, 3/4C6, and C6 are given in a drawing and .eng files. The .eng files show slightly over the impulse limits on some of the engines. I did not stop to adjust the powder to keep all under the limits for impulse.
We are pleased with the results.

The hybrid port has a slightly deeper drill than standard to get the 18N peak. This is still not as high as the B14, B8, or C5 from the early days, but is higher than most engines in this class sold today. Now we have to decide whether to release the standard 11N peak as well as the hybrids or just release the hybrids and avoid the confusion.

A new .eng viewer is also included to analyze the results.

Feedback and comments are welcome!
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