Thanks Bill for sharing your experience with the Javelin. The weaknesses you exhibit is what I expected. I've got one on the board right now.

@billkuhl442

3 жыл бұрын

I thought this might help people some in their builds.

Good video Bill I am building a Javelin now I will follow your lead on the landing gear etc..... Thanks for the video

@billkuhl442

3 жыл бұрын

At least I hope the video gives people some ideas for their planes.

Thank you Bill for posting your Javelin journey. I look forward to your posts.

@billkuhl442

3 жыл бұрын

Thank you. That is why I do it, I am not spending much time on editing but just showing the process in my building and flying.

Looks like you got some good flights out of it.

@billkuhl442

5 ай бұрын

I was hoping for better.

I've built a half dozen of these, but only 2 had the original landing gear setup. 1 because I didn't know better, the other because it was required by the contest rules. Both quickly broke as yours did. I now use a setup similar to the one on Endless Lift. Something that helps with the glide, but isn't allowed by your contest rules is thinning the airfoil about 30%. Gets rid of that very blunt leading edge. Good luck in the contest. :-)

@billkuhl442

3 жыл бұрын

I remember seeing a video of someone that used a thinner airfoil and it improved the flight. The glide is really bad as is.

Very cool. I'm rooting for you. But here in Las Vegas, I'm thinking we're on track for good flights! Haha

The landing gear wire is best inserted into a slot/box in the underside of the fuselage. The balsa strut may be glued to the wire leg and bound in place with a cloth strip. The balsa sheet is not glued rigidly to the fuselage, but attached with a cloth hinge strip. See an example here: www.endlesslift.com/the-mystery-phantom/ You are right, that prop is way too small. The prop diameter should be at least 1.5 times the square root of the wing area.

@billkuhl442

3 жыл бұрын

Thank you for sharing your approach to this issue. I like your simple stooge idea towards the end of the article.

Bill, Nice improvements to your Javelin.

@billkuhl442

3 жыл бұрын

thank you Tom

Nice job. I don't like the stock nose assembly ,and should have done what you did. There is still time to modify it. What are you using for power if you don't mind me asking?

@billkuhl442

3 жыл бұрын

I used one loop of 3/16" one and half length between hooks. Flight is pretty wimpy.

Does anyone know who designed the Javelin and when? Was it Paul Guillow or one of his designers.

That's a pretty ship! I just finished mine(scratch built). What rubber did you use? I am on the fence between 2 loops of 1/8" or a loop of 1/8"+ 1 loop of 1/16"(total 3/16").

@billkuhl442

3 жыл бұрын

3/16" will give a very gentle climb, 2 loops it will climb much better.

@adarshlakshman4715

3 жыл бұрын

@@billkuhl442 hmm. I'm yet to weigh mine. But you're right. 2 loops of 1/8" is probably better. But will a 6" prop be able to cope with that much power?

@billkuhl442

3 жыл бұрын

@@adarshlakshman4715 I think so but I did have 7" on my Lancer with two loops of 1/8".

@adarshlakshman4715

3 жыл бұрын

@@billkuhl442 ah. That would have had amazing flights.

Likewise my landing gear broke on it's first flight back in 1974. lol

I simply fly it without landing gear. It's just for fun anyway and not a world class performer no matter what you do. It flies much better without the gear. Why bother with competition, fly for fun.

@billkuhl442

6 ай бұрын

The entire reason I built it was for postal contest, for sure it flies better without landing gear.