stunthanger.com

General control line discussion => Open Forum => Topic started by: RC Storick on October 18, 2015, 03:33:13 PM

Title: Shoestring flight report
Post by: RC Storick on October 18, 2015, 03:33:13 PM: We had a old time/Perky/1.2 A contest and I arrived around 10. I over slept and should have been there first thing. But after waiting for them to finish I got a chance to roll out the lines. I hooked them up on a already made set of Lines I had and the handle was close to adjustment, so I thought. Powered up and in a 1/4 lap it jumped into the air. After back pedaling I got it under control. I went around about 5 laps and landed to readjust the handle.

Second attempt was a little more successful with around 15 to 20 laps ( not sure on the count) But I knew from the start there is a underling issue. Something is out of balance and I am getting a big vibration through the lines. There is a spacer between the back plate and hub that has a few thousands run out. After completing my other paint jobs so I can get into the garage and work on my lathe I will make the correct spacer and all should be well.

Even though I have a sound card sequencing issue and a vibration issue I believe it was a successful outing for the first time. Fred Cornenwett has taken a movie and should post it soon. Once this vibration issue is sorted out I think it's going to haul the mail. The footage you see is only 1/4 throttle.

https://youtu.be/lBzLVU8JZTY
Title: Re: Shoestring flight report
Post by: Fred Cronenwett on October 18, 2015, 04:06:06 PM: Got some pictures and video, get that posted later tonight. Awesome looking model Sparky! Typical maiden flight items

Fred
Title: Re: Shoestring flight report
Post by: Fred Cronenwett on October 18, 2015, 05:30:02 PM: Video has been uploaded to youtube

https://www.youtube.com/watch?v=rBLmj5ZUQQY

Fred
Title: Re: Shoestring flight report
Post by: RC Storick on October 18, 2015, 05:43:42 PM: Quote from: Fred Cronenwett on October 18, 2015, 05:30:02 PM
Video has been uploaded to youtube

https://youtu.be/lBzLVU8JZTY

Fred

Thanks Fred! I was very windy and it handeled the wind well for being out of trim. Next time I fly it I hope its warmer and less wind to sort out any issues.
Title: Re: Shoestring flight report
Post by: Jim Dincau on October 18, 2015, 06:30:18 PM: Sweet!
Title: Re: Shoestring flight report
Post by: john e. holliday on October 18, 2015, 07:00:10 PM: Looks great.
Title: Re: Shoestring flight report
Post by: Andre Ming on October 18, 2015, 07:21:42 PM: Nice airplane and maiden flight Robert!!

LOVE that field setting. Buder Park?
Title: Re: Shoestring flight report
Post by: Shug Emery on October 18, 2015, 07:44:54 PM: Looks fantastic.
Shug
Title: Re: Shoestring flight report
Post by: Gordon Van Tighem on October 18, 2015, 08:04:27 PM: Congratulations, now for the sound generator?
G
Title: Re: Shoestring flight report
Post by: Fred Cronenwett on October 18, 2015, 08:33:55 PM: This is the Center pad circle at Buder park that Sparky was flying on

https://www.youtube.com/watch?v=NqJRAJFaIQA

Fred
Title: Re: Shoestring flight report
Post by: wwwarbird on October 18, 2015, 08:46:00 PM: Cool. y1
Title: Re: Shoestring flight report
Post by: RC Storick on October 18, 2015, 09:28:14 PM: Quote from: Gordon Van Tighem on October 18, 2015, 08:04:27 PM
Congratulations, now for the sound generator?
G

I got that fixed tonight. I had the wires soldered on the wrong side of the of the switch.
Title: Re: Shoestring flight report
Post by: M Spencer on October 18, 2015, 09:34:57 PM: Looks Good , lotta people are fraid of tarmac .
Title: Re: Shoestring flight report
Post by: john e. holliday on October 19, 2015, 11:12:37 AM: It seems that most here in the states want pavement. The St Louis group are very lucky to have such a beautiful site. I need to get back there again.
Title: Re: Shoestring flight report
Post by: Mike Lauerman on October 23, 2015, 01:45:33 PM: All through the build I anticipated seeing this flight. Beauty in the air, looks to taxi nicely. Typical of the Sparky build quality.
Title: Re: Shoestring flight report
Post by: FLOYD CARTER on October 23, 2015, 01:53:45 PM: I have to admire anyone building a serious scale model without all the "point grabbers" like retracts, flaps, bomb drop, etc.

It's tough trying to compete against any "full house" model.

F.C.
Title: Re: Shoestring flight report
Post by: RC Storick on October 23, 2015, 02:18:55 PM: Quote from: Mike Lauerman on October 23, 2015, 01:45:33 PM
All through the build I anticipated seeing this flight. Beauty in the air, looks to taxi nicely. Typical of the Sparky build quality.

Thanks Mike

Quote from: FLOYD CARTER on October 23, 2015, 01:53:45 PM
I have to admire anyone building a serious scale model without all the "point grabbers" like retracts, flaps, bomb drop, etc.

It's tough trying to compete against any "full house" model.

F.C.

It's only because I don't know what I am doing
Title: Re: Shoestring flight report
Post by: Brett Buck on October 23, 2015, 04:09:42 PM: One of the things that drove me away from scale in model rocketry was the points emphasis on features and complex operations, instead of strictly accuracy. Even though I had one of the first really complex multi-function models, you shouldn't *have to* do it just to be competitive.

The one thing you have going for you is that you can build them light enough to be able to make up some of the lack of features with better flight maneuvering. You know my opinion about it for stunt, but I am amazed as how much plywood winds up in some scale airplanes, and as near as I can tell, most of it is unnecessary.

Brett
Title: Re: Shoestring flight report
Post by: RC Storick on October 23, 2015, 05:02:39 PM: Quote from: Brett Buck on October 23, 2015, 04:09:42 PM
The one thing you have going for you is that you can build them light enough to be able to make up some of the lack of features with better flight maneuvering. You know my opinion about it for stunt, but I am amazed as how much plywood winds up in some scale airplanes, and as near as I can tell, most of it is unnecessary.

Brett

Very little plywood in this one and it's a turd at 85 ounces by my standard. But the scale guys say its light.
Title: Re: Shoestring flight report
Post by: Brett Buck on October 23, 2015, 05:07:29 PM: Quote from: Robert Storick on October 23, 2015, 05:02:39 PM
Very little plywood in this one and it's a turd at 85 ounces by my standard. But the scale guys say its light.

My point exactly.

Brett
Title: Re: Shoestring flight report
Post by: Fred Cronenwett on October 23, 2015, 05:28:48 PM: You have to remember that CL scale models are trimmed differently than Stunt models, odd as it may sound if a model is too light in scale can result in adverse flight performance. With CL scale we don't fly as fast and have to throttle back and land under power. I will typically put in 8 to 9 second laps instead of the faster 5.5 sec laps times in CL stunt. We are also not trying to turn tight corners.

The B-29 that I fly with a 96" span can slow down for a gentle landing but heavy enough that windy conditions does not bounce it around too much. The model comes in at 13.5 lbs and has a 39 ounce wing loading. From a CL stunt point of view it's a flying pig, but from a CL scale point of view flies just like the real full size version and works great. Could I perform a wing over, not a chance but that is not the purpose of the model. The wing loading can increase as the model gets bigger.

I had one model (71" span Piper Cub) was light enough it would never land even at full idle and would balloon up with a strong headwind. The wing loading was light enough it was bounced around by the wind. When I added 16 ounces of ballast (no I am not kidding) the increased weight allowed the model to land like the full size, penetrate the wind and no longer got bounced around at slow landing speeds.

but to be fair some older CL scale kits had way too much plywood and were too heavy....

Fred
Title: Re: Shoestring flight report
Post by: wwwarbird on October 23, 2015, 07:21:48 PM: Like Fred points out it's a whole different ball game with scale, but I think most here realize that.

I do have to say though that most scale models I've ever seen have been literal flying bricks, enough so that they simply "fly" like crap. Finding the ideal weight/size ratio helps a lot but for some reason most scale models you see are built a lot heavier than necessary.
Title: Re: Shoestring flight report
Post by: john e. holliday on October 24, 2015, 11:52:55 AM: As stated they are not built for aerobatics. The extra weight helps when you have wind to contend with. Still they have to be light enough to fly and fly similar to the air craft modeled.
Title: Re: Shoestring flight report
Post by: Mike Lauerman on October 25, 2015, 09:53:24 AM: ...Then there's the 'size scale'. I learned rude lessons early on with 1/2A scale...then up to a .19 and 36" wingspan.
Suddenly, a whole world of 'possibilities' opened up.
Only lately did some of those 'possibilities' finally materialize. ;D
Title: Re: Shoestring flight report
Post by: frank mccune on November 01, 2015, 02:03:30 PM: Hi Sparky:

In Old Country they would say "Well Done" and that it is good as it got! If it was something really great, it would get Three Cheers!

Great work Sparky!

Stay well,

Frank McCune
Title: Re: Shoestring flight report
Post by: Rotten on November 01, 2015, 02:11:05 PM: Very Nice!! Without a doubt a favorite of mine is the Shoestring. Love your Avatar! Although I have been away a while, It's nice to see your work again. Do you still have that HD Viper? I really like that one!!!