MPF M6 Mermaid Scratch and Kit Built
Build Guide for Dz1sfb modified Mermaid Seaplane and Kit details
The object of this blog entry is to capture changes that I made to the Vlesie (Marcel) Mermaid design so that if you want to, you can make one like it. Marcels design performs wonderfully like it is, but changes in materials drove me make some design changes and enhancing flight characteristics was also desirable. Also the provided build documentation will support those who desire to assemble parts supplied by Kens CAD Models.
Link to Marcel's original design thread.
Changes to Marcel's design include:
Revised aileron servo location and mounting
Redesigned horizontal stabilizer/elevator assembly
Redesigned tail former
Added fuselage deck/battery support
Redesigned wing with KFm2 airfoil and affected wing braces
Changed wing tip floats from a laminated design to a hollow 3 piece interlocking design.
Reinforced motor mount box mounting to fuselage.
Mermaid M6 Specifications
- 41 Wingspan
- 35.64 Length
- 11.17 Height
- 16-21oz ready to fly
- Hobby knife with a fresh sharp blade
- Painters or masking tape
- Foam Tac Adhesive
- Gorilla Glue White Formula
4 9g Servos...Continue Reading
1 25-35 Amp ESC
1 2405 2190 Kv or a 2212-06 2200 Kv brushless outrunner motor
2 16 servo extension leads
1 6 x 4 APC Propeller and adapter for motor
Clear and colored packing tape for protecting and decorating the airframe
.032 and .039 music wire for pushrod
4
StingRay 3.0
I am happy to introduce not only a new kit, but plans for the folks that love to build from paper templates, the latest version of the SEMFF StingRay, StingRay 3.0.
This new interation has some significant design improvements and more organic looks.
Changes include;
- Further aft center of gravity.
- Longer elevons.
- More central servo location.
- Sexy trailing edges.
- One degree of downthrust
Flying characteristics impacted by changes;
- Easier to build inside the cg range without having to add ballast or spinner.
- More pitch authority at low speeds.
- Less rolling moment inertia which make for crisper rolls and protects the servo from impact by placing them behind the prop arc.
- Smoother roll response.
- Pulls level through power range.
Plans have written instructions and will be accompanied by a build guide.
Ken
Testimonial - http://www.rcgroups.com/forums/showp...&postcount=143
This new interation has some significant design improvements and more organic looks.
Changes include;
- Further aft center of gravity.
- Longer elevons.
- More central servo location.
- Sexy trailing edges.
- One degree of downthrust
Flying characteristics impacted by changes;
- Easier to build inside the cg range without having to add ballast or spinner.
- More pitch authority at low speeds.
- Less rolling moment inertia which make for crisper rolls and protects the servo from impact by placing them behind the prop arc.
- Smoother roll response.
- Pulls level through power range.
Plans have written instructions and will be accompanied by a build guide.
Ken
Testimonial - http://www.rcgroups.com/forums/showp...&postcount=143
Dz1sfb Plans
Finally getting around to getting the links to all my plans in one place. The following are my design or a variation of an existing design. Give Credit where it's due.
Aero Ace Air Hogs geared models
Aero Ace Air Hogs geared models
- Aero Ace gear BD-5J - Original - http://www.rcgroups.com/forums/showthread.php?t=683788
- Aero Ace gear T-38 Talon - Original - http://www.rcgroups.com/forums/showp...postcount=1677
- Blazy Bee - Foamie version of Andy Clancy's Lazy Bee - http://www.rcgroups.com/forums/showthread.php?t=828620
- Blu Speedy Bee - Foamie version of Andy Clancy's Speedy Bee - http://www.rcgroups.com/forums/showthread.php?t=1019010
- Sea BB - Designed off of the sucessful Tony65x55's Blue Baby - http://www.rcgroups.com/forums/showthread.php?t=954868
- Foamie Rascal - Foamie version of a Top Flite models classic - http://www.rcgroups.com/forums/showthread.php?t=1008310
- Aviatik D1 - A mildly aerobatic slow flyer that looks and flys great indoors and out. - http://www.rcgroups.com/forums/showp...&postcount=200
- Oshkosh Special - Designed off of the sucessful Tony65x55's Blue Baby - http://www.rcgroups.com/forums/showthread.php?t=1040899
- BB AT-24 - Another bashing of the Blue-Baby design - http://www.rcgroups.com/forums/showthread.php?t=1140436
- Blu-Baby 33 Classic - The only commercially approved by Tony 65x55 kit of his famous design - http://www.rcgroups.com/forums/showthread.php?t=1577227
- Blu-Baby 33 Trike - The only commercially approved by Tony 65x55 kit of his famous design -
My Favorite Plane of 2007
I really have enjoyed Tony65x55's Blue Baby. I have built 4 of the 33" versions in 2007 and it generated another 4 builds by my coworkers. Theirs are not complete yet, but they are getting there. I maybe building 2 more this spring. I just wanted to put up the pictures of the 3 I finished. I sold the 4th one prior to finishing it.
Here is the link to Tony65x55's Blue Baby thread if you are not already familiar with it. http://www.rcgroups.com/forums/showthread.php?t=681556
Ken...Continue Reading
Here is the link to Tony65x55's Blue Baby thread if you are not already familiar with it. http://www.rcgroups.com/forums/showthread.php?t=681556
Ken
...Continue Reading
Profile BD-5J with AA Jet guts
Discussion /
Posted by dz1sfb /
May 09, 2007 @ 08:13 PM / 34,199 Views /
54 Comments
( 
1 2 3 4 )
/ Reply
1 2 3 4 )
/ Reply
Hi All,
This BD-5 thing has got me going. I am still developing the full bodied model into a balsa version and that is well underway. Today I hacked out a profile version of the aforementioned model, ran to Wal-mart, bought the AA jet, tested it to make sure it worked and then gutted it for electronics, battery and motors.
This is the result;
The profile version required a little bit of down elevator trim to fly right. Flies very nice, more wing area and less wieght than the full body model, and looks good in flight. Does loops and stall turns, stays aloft at lowest power settings.
Sorry about not having any video. I would like to make the purchase but do not want to spend $ for the one I want right now.
BFR (Building, Flying, Repairing),
Ken (dz1sfb)
12-MY-2007 at 10:53pm
Added plans and pics rather than having to go to the post.
The plans posted here are revised from the prototype;
This BD-5 thing has got me going. I am still developing the full bodied model into a balsa version and that is well underway. Today I hacked out a profile version of the aforementioned model, ran to Wal-mart, bought the AA jet, tested it to make sure it worked and then gutted it for electronics, battery and motors.
This is the result;
- Increased wing chord 1/2" over scale
- Elevator is 3/16" longer on TE than scale
- Span is 12-1/2" with 5 degrees incidence and 7 degrees dihedral per wing
- Weight is 18.7g
The profile version required a little bit of down elevator trim to fly right. Flies very nice, more wing area and less wieght than the full body model, and looks good in flight. Does loops and stall turns, stays aloft at lowest power settings.
Sorry about not having any video. I would like to make the purchase but do not want to spend $ for the one I want right now.
BFR (Building, Flying, Repairing),
Ken (dz1sfb)
12-MY-2007 at 10:53pm
Added plans and pics rather than having to go to the post.
The plans posted here are revised from the prototype;
- Wing incidence has been reduced from 5 to 4 degrees to eliminate trimming the elevator.
Bede BD-5J from Aero Ace Gear
For your pleasure,
I am very pleased with my BD-5J from scratch for some of my Aero Ace gear. I was going to wait to post, but after a sucessfull test flight I could'nt hold off.
It all started with a great 3-view from the web. I then printed it with Posteriza (a free utility at http://www.posteriza.com/es/index.php?lang=en_US) 2 sheets wide (landscape) by 2 sheets high. This gave a wingspan of 12-1/2". I laid my AA Sport on top and found a pretty close match in wingspan, length, and tail moment.
This got me going, especially after seeing Electronick's Megajet.
I added 3/8" onto the horizontal stab TE for additional stability. The narrow chord wing had me concerned. The AA Sport has a 3" chord at the root and this was only 2". That means 1/3 less wing area than the Sport. I decided to finish the model anyway (the BD-5 looks great), and to build it to accommodate different wings to experiment with (6mm Depron wing is sanded to a Clark Y airfoil). I have built a 3" chord wing as seen in the picture and will add a 2-1/2" one also. My guess is that the 3" chord will yield similar performance to the AA sport.
Materials;
You may like to know that there is 5 degrees of...Continue Reading
I am very pleased with my BD-5J from scratch for some of my Aero Ace gear. I was going to wait to post, but after a sucessfull test flight I could'nt hold off.
It all started with a great 3-view from the web. I then printed it with Posteriza (a free utility at http://www.posteriza.com/es/index.php?lang=en_US) 2 sheets wide (landscape) by 2 sheets high. This gave a wingspan of 12-1/2". I laid my AA Sport on top and found a pretty close match in wingspan, length, and tail moment.
This got me going, especially after seeing Electronick's Megajet.
I added 3/8" onto the horizontal stab TE for additional stability. The narrow chord wing had me concerned. The AA Sport has a 3" chord at the root and this was only 2". That means 1/3 less wing area than the Sport. I decided to finish the model anyway (the BD-5 looks great), and to build it to accommodate different wings to experiment with (6mm Depron wing is sanded to a Clark Y airfoil). I have built a 3" chord wing as seen in the picture and will add a 2-1/2" one also. My guess is that the 3" chord will yield similar performance to the AA sport.
Materials;
- 1-1/2" thick blue Dow foam - Fuselage
- 1/8" or 3mm foam - vertical and horizontal stabilizers
- 6mm Depron - wings and filler.
You may like to know that there is 5 degrees of...Continue Reading
Bell 222 from PicooZ/Havoc Heli
Due to numerous requests I have decided to offer as much documentation as possible, for those desiring to see how they can get a good looking body for their PicooZ/Havoc Heli. This is a Bell 222, but you may apply the same techniques for other designs.
The first thing you will need is a block of foam. I used blue Dow insulation foam. Others may be useful, the Dow material is what I had on hand. The only foam I would not use is the white beaded styrofoam, due to its coarse texture. I also used a small amount of 2mm depron foam for the tail fins, horizontal stabilizer, and landing gear.
Blue Foam block size; 6-1/4" L x 1-1/8" W x 1-1/2" H
2mm Depron - 1" x 6"
Second you need templates to cut the top and side profiles to. I have included the Powerpoint file that has a slide to the scale that I used for this. Included in the attachments is a jpeg image of the slide at the correct size to print out. Just make sure that you print at 100% size.
Here are the steps that I took to create this model;
The first thing you will need is a block of foam. I used blue Dow insulation foam. Others may be useful, the Dow material is what I had on hand. The only foam I would not use is the white beaded styrofoam, due to its coarse texture. I also used a small amount of 2mm depron foam for the tail fins, horizontal stabilizer, and landing gear.
Blue Foam block size; 6-1/4" L x 1-1/8" W x 1-1/2" H
2mm Depron - 1" x 6"
Second you need templates to cut the top and side profiles to. I have included the Powerpoint file that has a slide to the scale that I used for this. Included in the attachments is a jpeg image of the slide at the correct size to print out. Just make sure that you print at 100% size.
Here are the steps that I took to create this model;
- Print out 3 sets of drawings. You will use one for the fuselage top and side views. The second one for detail parts, such as tail fins, stabilizer, and main wing area of fuselage. The third is used for window masks for painting the windows with permanent ink markers.
- Cut top and side profiles and attach to block of foam. Then bandsaw the side view first, then use the cuttings to support the block for trimming the top view profile.
- Very carfully sand the all
