Logo
Builders' Plan Gallery  |  Hip Pocket Web Site  |  Contact Forum Admin  |  Contact Global Moderator
June 26, 2017, 08:17:52 PM *
Welcome, Guest. Please login or register.
Did you miss your activation email?

Login with email, password and session length
 
Home Help Search Login Register
Pages: [1]   Go Down
Print
Author Topic: BMJR Starduster e36 Build Report  (Read 686 times)
0 Members and 1 Guest are viewing this topic.
ScienceGuy
Gold Member
*****

Kudos: 10
Offline Offline

United States United States

Posts: 577

Topic starter


Ignore
« on: January 20, 2017, 02:26:57 PM »

I have a Starduster almost built, it is not as light as other designs but appears to be really rigid. After I have flown it I will do another report.

http://scienceguyorg.blogspot.com/2017/01/starduster-bmjr-e36-build-report.html

Bill Kuhl
Attached files Thumbnail(s):
BMJR Starduster e36 Build Report
Logged
Starduster
Platinum Member
******

Kudos: 28
Offline Offline

United States United States

Posts: 1,183




Ignore
« Reply #1 on: January 20, 2017, 02:32:18 PM »

Hey, Bill... do me a favor?

Take a tape measure and measure from wing tip to wing tip? (i.e. "Projected")

Thanks

Rich
Logged

"We have done the impossible, and that makes us mighty..."
ScienceGuy
Gold Member
*****

Kudos: 10
Offline Offline

United States United States

Posts: 577

Topic starter


Ignore
« Reply #2 on: January 20, 2017, 02:33:42 PM »

I will later today and report back.

Bill
Logged
jswain
Silver Member
****

Kudos: 5
Offline Offline

United States United States

Posts: 140



Ignore
« Reply #3 on: January 20, 2017, 03:01:14 PM »

thanks for posting your work and experience so far.

please keep doing so and if you get the chance some final weights of model parts for use by others later as what to expect from the kit.

also i enjoyed seeing your  videos - https://www.youtube.com/watch?v=lTrOosF4Nns  - of the recent nats event.

john s.

Logged
ScienceGuy
Gold Member
*****

Kudos: 10
Offline Offline

United States United States

Posts: 577

Topic starter


Ignore
« Reply #4 on: January 20, 2017, 03:14:31 PM »

I need to get the total weight. The wing was 35 grams uncovered and 43 grams covered. Stab was 10 grams covered.  I should be able to get total weight now.

It sounds like this plane weighs about 170 grams.

Bill Kuhl

Logged
ScienceGuy
Gold Member
*****

Kudos: 10
Offline Offline

United States United States

Posts: 577

Topic starter


Ignore
« Reply #5 on: January 20, 2017, 05:59:45 PM »

Final weight 172.08 grams. Projected wingspan is exactly 36 inches.
Logged
jswain
Silver Member
****

Kudos: 5
Offline Offline

United States United States

Posts: 140



Ignore
« Reply #6 on: January 20, 2017, 11:50:22 PM »

Final weight 172.08 grams. Projected wingspan is exactly 36 inches.

thank you again, great to know what to expect from the kit material.

best wishes on getting some time and weather to at least test fly, been very windy and rainy here in so. calif and will continue for a few more days.

john s.
Logged
ScienceGuy
Gold Member
*****

Kudos: 10
Offline Offline

United States United States

Posts: 577

Topic starter


Ignore
« Reply #7 on: April 04, 2017, 09:22:15 AM »

I have made many test flights of the Starduster now but never got above 5 seconds and did short DT because I was flying from a small field. To me it seemed like it got good altitude in 5 seconds.

Bill Kuhl
Attached files Thumbnail(s):
Re: BMJR Starduster e36 Build Report
Logged
ScienceGuy
Gold Member
*****

Kudos: 10
Offline Offline

United States United States

Posts: 577

Topic starter


Ignore
« Reply #8 on: June 16, 2017, 09:26:42 AM »

I am still working on getting the e36 Starduster trimmed out but it is looking better all the time. It has taught me a lot.

http://scienceguyorg.blogspot.com/2017/06/e36-free-flight-2017-progress-sometimes.html

Bill Kuhl

Attached files Thumbnail(s):
Re: BMJR Starduster e36 Build Report
Logged
jswain
Silver Member
****

Kudos: 5
Offline Offline

United States United States

Posts: 140



Ignore
« Reply #9 on: June 17, 2017, 05:58:54 PM »

I am still working on getting the e36 Starduster trimmed out but it is looking better all the time. It has taught me a lot.

Bill Kuhl

Yeah, that shimming of the stab tilt is a bit of a 'creeper' setting where the more you tilt via shims the more down effect the model gets - can easily
change a good slow glide (albeit usually a straight down wind attempt to escape..) to an unwanted faster glide.

Still though, stab tilt,  has been the best method to for me to keep my models from trying to run away straight down wind  Cheesy

js
Logged
flydean1
Gold Member
*****

Kudos: 4
Offline Offline

United States United States

Posts: 336



Ignore
« Reply #10 on: June 17, 2017, 06:17:34 PM »

That can be avoided by shimming the trailing edge of the stab 1/2 the thickness of the tilt shim added.  If 1/32" of tilt added, shim up the trailing edge by 1/64".  Stab angle relative to the wing remains the same.
Logged
danberry
Gold Member
*****

Kudos: 16
Offline Offline

United States United States

Posts: 856



Ignore
« Reply #11 on: June 17, 2017, 07:36:02 PM »

You don't shim the stab for glide turn.
You shim the wing. That way you don't change decalage.
And you don't shim with balsa.
Logged
Pages: [1]   Go Up
Print
Jump to:  

Powered by MySQL Powered by PHP Powered by SMF 1.1.21 | SMF © 2015, Simple Machines Valid XHTML 1.0! Valid CSS!