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-   -   Estes Little Joe I (http://www.oldrocketforum.com/showthread.php?t=17340)

BARGeezer 06-30-2018 06:52 PM

Quote:
Originally Posted by SEL
Way back in 1998, Yita Wu of HUVARS (I think) put together a Little Joe I kit. Not exactly up to scale, but not bad. Below is a pic from a CMASS launch. Flew really well on C6-3's. It ultimately fell victim to a A8-3 (I wasn't wearing my glasses).



S.



You may be interested in reading pages 10 and 11 of the following HUVARS newsletter:

http://cv41.org/newsletters/T-Minus..._vol12_no01.pdf

Also a closer shot on p. 18.

SEL 06-30-2018 07:06 PM

Quote:
Originally Posted by BARGeezer
You may be interested in reading pages 10 and 11 of the following HUVARS newsletter:

http://cv41.org/newsletters/T-Minus..._vol12_no01.pdf

Also a closer shot on p. 18.


Thanks for that. I’ve downloaded the HUVARS newsletters, but haven’t reached that issue yet.

SEL 06-30-2018 07:12 PM

Quote:
Originally Posted by rocket.aero
The Yitah Wu LJ kit was the seed that began a 20+ year obsession with the Little Joe for me. If I ever meet the guy I plan on buying him many beers.

The scale qualities of that kit were actually pretty good, and the forthcoming Estes kit is very similar to that old gem.

James


I have the plans in pdf form. If anyone here knows Yita, and can check to see he doesn’t mind, I can send the file to Scott to post on YORP.

jdbectec 07-01-2018 10:32 AM

Quote:
Originally Posted by SEL
I have the plans in pdf form. If anyone here knows Yita, and can check to see he doesn’t mind, I can send the file to Scott to post on YORP.

As I recall these were once available online. I remember downloading them. However, I can't seem to find them anywhere. It was BT-70 slightly smaller in diameter than the scale diameter of 2.3" .

Gus 07-01-2018 11:11 AM

James,

I had no idea that's what inspired your obsession. Yitah is still part of HUVARS. Wonderful guy! I will pass along your post.

In addition to his Little Joe, Yitah's also really creative in other ways. He's an electrical engineer and a couple of years ago he led a session at a HUVARS meeting where he taught us to build ridiculously powerful launch controllers from disposable camera capacitors. Emma and I went to Walgreens and convinced them to give us their entire recycle box (hundreds, LOL) of already developed cameras for us to "recycle."

Those controllers, really meant for clusters, were just insanely powerful. And you charged them up with a single AA battery. They were powerful enough that Yitah demonstrated how, using his controller, clusters should be connected in series, not parallel. He hooked up 8 igniters in series, pushed the button on his controller and all 8 just instantly vaporized. Just amazing.

SEL 07-01-2018 05:23 PM

Quote:
Originally Posted by jdbectec
As I recall these were once available online. I remember downloading them. However, I can't seem to find them anywhere. It was BT-70 slightly smaller in diameter than the scale diameter of 2.3" .


Y’know, I could have sworn that I had sent the plans to Scott years ago and that he had posted the to YORP, but I don’t see them.

Ltvscout 07-01-2018 06:09 PM

Quote:
Originally Posted by SEL
Y’know, I could have sworn that I had sent the plans to Scott years ago and that he had posted the to YORP, but I don’t see them.

It is weird. When I first saw Estes was testing an LJ I to sell I went looking on my sites because I remembered Yitah had made plans for one. I was pretty sure I had the plans. I knew I had the plans he made for spring loading the landing pads of an Estes Super Vega. Those were in the Building Tips section of YORS. I couldn't find anything! I honestly don't know what happened to the stuff. The only thing I can think of is at some point Yitah must have asked me to take them down, although if that happened I don't recall.

So, even if Yitah asks stuff not be posted publicly when Steve talks to him I'd appreciate if you could re-send the plans to me along with a copy of the spring loaded landing pads plan if you have them. Yitah was selling the special springs back in the 90's. I have a set of the springs around here somewhere that I bought from him. I just need a set of the plans again.

Ltvscout 07-01-2018 06:17 PM

Quote:
Originally Posted by Ltvscout
It is weird. When I first saw Estes was testing an LJ I to sell I went looking on my sites because I remembered Yitah had made plans for one. I was pretty sure I had the plans. I knew I had the plans he made for spring loading the landing pads of an Estes Super Vega. Those were in the Building Tips section of YORS. I couldn't find anything! I honestly don't know what happened to the stuff. The only thing I can think of is at some point Yitah must have asked me to take them down, although if that happened I don't recall.

So, even if Yitah asks stuff not be posted publicly when Steve talks to him I'd appreciate if you could re-send the plans to me along with a copy of the spring loaded landing pads plan if you have them. Yitah was selling the special springs back in the 90's. I have a set of the springs around here somewhere that I bought from him. I just need a set of the plans again.

Part of the mystery solved. I was positive I had the plans for spring loading the landing pads in the Building Tips section of my YORS site. I used Google and found it's on the Barclone site I host for Craig McGraw. Here's a link to that one:

http://barclone.rocketshoppe.com/tips/svspring.jpg

Ltvscout 07-01-2018 06:20 PM

Quote:
Originally Posted by Ltvscout
Part of the mystery solved. I was positive I had the plans for spring loading the landing pads in the Building Tips section of my YORS site. I used Google and found it's on the Barclone site I host for Craig McGraw. Here's a link to that one:

http://barclone.rocketshoppe.com/tips/svspring.jpg

And the rest of the mystery is solved. Yitah's LJI plans are also on Barclone. Duh! I haven't looked at that site in years. Sorry, Craig!

http://barclone.rocketshoppe.com/de...nstructions.pdf

The plans were actually scanned/sent to me by Bill Spadafora, RIP.

There are lots of cool designs on Barclone that Craig and others contributed. People should check them out:

http://barclone.rocketshoppe.com/

SEL 07-01-2018 07:10 PM

Quote:
Originally Posted by Ltvscout
And the rest of the mystery is solved. Yitah's LJI plans are also on Barclone. Duh! I haven't looked at that site in years. Sorry, Craig!

http://barclone.rocketshoppe.com/de...nstructions.pdf

The plans were actually scanned/sent to me by Bill Spadafora, RIP.

There are lots of cool designs on Barclone that Craig and others contributed. People should check them out:

http://barclone.rocketshoppe.com/



Here's a thread from ~10 years ago on the same subject with a reply from the man himself:



http://forums.rocketshoppe.com/show...highlight=yitah


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