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Tuesday, September 26 2017 @ 01:05 AM AEST
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Jolly Logic voluntary recall of AltimeterOne and AltimeterTwo

John Beans has posted this on a US forum:

Bug Report: AltimeterOne and AltimeterTwo


Jolly Logic has found a bug in the code that displays METRIC units in next generation versions of AltimeterOne and AltimeterTwo. Altitudes in meters and speeds in meters/second are misreported on the display. The underlying data, stored in feet and MPH, remains accurate. However, when the units are switched to metric these measurements are displayed incorrectly. As most users in the United States use feet and MPH we are not making this a mandatory recall. However, if you plan to use your altimeter in metric mode, we would be happy to update your firmware.

Affected Units

Product Issue

AltimeterOne 2.3 Do not use in metric mode.
AltimeterTwo 3.8 Do not use in metric mode.

Earlier and later versions are okay.

Any customer who depends on metric units may send their altimeter to us with their return address and we will update their software. This is a voluntary update.

Send to:
Jolly Logic
231 Daylight Place
Danville, CA 94526

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Iconia Aerospace Store

Australian manufactured rocketry components at Chinese prices from outback Queensland.



Most rocketry supplies for model builders are made in China, then sent to the US, then brought into Australia by an importer then sold to you by a reseller.


Finally there are rocketry supplies made in Australia without all the markups by the middle men. Though we currently only have a limited line of products, new products will be being added on a monthly basis and as our new manufacturing facility is completed, our new machines will come online so prices are set to drop.


In the pipeline are fins, fins and more fins. Once one starts designing fins it's hard to know when enough designs are enough.


We will be providing each design in multiple sizes, however multiple material types will have to wait for a while.


Once we have a reasonable inventory of fin designs on sale, we will release a certain amount of new designs each month to add more variety.


We will also be providing a feature for people to submit fin design suggestions and even custom laser cut fins.


The more support we get from the Australian rocketry community, the more types and designs of model rocket parts we will manufacture.


It's all about people being able to build more creative model rockets in less time without spending a fortune.


Goto Iconia Aerospace Store
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New online rocketry store opens

My buddies over at Australian Rocketry (no relation) have opened a new online store, selling a wide variety of High Power kits, parts, accessories, and importantly, motors. Check them out @
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CASA gets the word out

I had occasion to pop into my friendly Local Hobby Shop today. I admit to not having done so for several months. I was somewhat surprised to see a smart looking CASA flyer on the counter with the friendly catch line "New to Model Rockets? Get to know the rules." on the front. On the back is some notes about what kind of rockets can be flown where. It's great that CASA has produced an informational flyer like this. I think it's testimony to the great work that some of the clubs around Australia have done in growing this amazing hobby.


It's a shame they made a small error in describing their own regulations that would incorrectly shut out an almost entire impulse level from use in small model rockets..

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Site upgrade redux

I've upgraded the site again. Let me know if things don't work the way you think they should.

I thought I'd also let you know that NASA have released some great photos on Flickr. Well worth spending some time to look through them.

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Japanese spacecraft to land in Australia

The Central Australian outback will play a part in space discovery in June when a capsule from a Japanese spacecraft will come to earth at the Woomera rocket range.

The Hayabusa spacecraft made contact with an asteroid five years ago but Japanese officials are uncertain if it managed to collect any material from it.

The Federal Government says Australian authorities are working with their Japanese counterparts on how to successfully land the basketball-sized capsule.

From ABC News
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Site upgrades in progress

Update: The software upgrade has gone well, and the gallery and forum are back on line. The main problem is my theme has had a suboptimal transition. I'm looking into it. Sorry for the ugliness.

I'm currently working on upgrading the site software. Parts of the site like the photo gallery will go offline during the process. This is a jump of a couple of major release versions, so fingers crossed all goes well. I have backups, but hope I won't need them.
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Australian Mint releases 40th Anniversary of Moon Landing commemorative 50 cent piece

If you've been under a rock for the last week or so, you might have missed all the celebrations surrounding the 40th anniversary of the first moon landing. You might also have missed Australia's involvement in televising that moment to 600 odd million people around the world. The Australian Mint has struck a commemorative 50c piece in honour of the occasion. Keep an eye on your change in coming months, or, jump straight to the Australian Mint's website and grab an uncirculated coin including the cover.

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TRA & NAR win 9 year case against BATFE

In what will be the biggest story this year in the global hobby rocketry community, Judge Reggie Walton has issued his final ruling in the long running case of NAR/TRA vs BATFE. The communication from TRA President Ken Good spells out the results. At this early stage, I don't know if this judgement will have any effect on rocketry in Australia, but any effect can only be positive. Several Australian states labour under draconian laws that label Ammonium Perchlorate Composite Propellant (APCP) as an explosive. This ruling in an American court has scientifically proven that APCP is not an explosive, and the BATFE listed it without any regard to fact. Once the dust has settled in America and the full effect of this ruling is seen, hopefully we may be able to use it as a precedent for having some of our own laws relaxed. Make no mistake, this win is a huge step forward for legitimising our hobby amongst those agencies that don't understand how safe and responsible we are.

From: Ken Good
Sent: Mon 3/16/2009 11:42 PM
To: TRA Prefects List
Subject: Victory in the Litigation Against the BATFE

March 16, 2009

TRA Prefects and Members:

After a nine-year effort by the leaders of TRA & NAR, the legal team of Joe Egan, Marty Malsch, and John Lawrence, and with the generous and solid support of our members, we have at last won decisively in our litigation against the BATFE. The District Court opinion, issued today by Judge Reggie Walton and appended below, constitutes a clear and full victory, and vindication of what we have asserted these long and difficult years.

As quoted in the opinion, BATFE’s regulation of APCP was found by Judge Walton to be "arbitrary and capricious, an abuse of discretion, or otherwise not in accordance with the law." and has been ordered by the Court to be "vacated" or canceled.

NAR President Trip Barber and I will be in communication with our legal counsel over the next several days on exactly what we need to do next to ensure that BATFE complies with this order, and to determine the details and timing of ending our interaction with the agency as a regulator of APCP. We are not making any assumptions concerning the agency’s next actions – they may consider an appeal or other further legal options to try to hang on, but the burden of proof is now on them, and their roadmap of such proof has utterly failed them.

Until we understand the next steps and how we will ensure the agency adheres to this court order, please refrain from confrontations with any BATFE agent, do not surrender or destroy your LEUP, and do not remove material from any magazines yet. We will issue a joint statement at some point in the next several days on our next steps as soon as these are known.

Thank you all again for your unflagging support and your enduring patience.

Ken Good
TRA President

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Delay adjusting tool (ProDAT) Recall Alert

Loki Research's Jeff Taylor has issued the following notice:-

It has come to my attention that some ProDAT delay adjusting tools sold in 2007 and 2008 are defective.

The problem is that the drill bit is set into the handle at the wrong height (too high). The result is that the delays are drilled deeper than expected and the delay times are too short by as much as five seconds. This can be catastrophic! Please check any ProDATs that you have and contact me if you find bad ones. The correct overall length to the tip of the drill bit is 1.675", the bad ones that I have seen are in the 1.8" to 1.82" range.
See for a drawing.

I will replace any bad tools, regardless of where you bought them.



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