HobbyKing.com New Products Flash Sale
Reply
Thread Tools
Old Aug 04, 2013, 11:03 PM
Registered User
United States, UT, Ogden
Joined Nov 2004
624 Posts
New Product
Griffwerks Foamies **PROMOTION SPECIAL**

We are Griffwerks Foamies - a small business geared toward making affordable EPP foam airplanes and kits. We have been in business for roughly 3 years, mostly selling to local hobby shops here in Utah. We are now expanding to internet sales. We also feel we offer one of the best values in the foamy market today.

We hand-cut and hand-paint each aircraft, hinge them, and finally spar them with carbon fiber rods. Then we include all building components needed to assemble your kit. Our kits have a lot of components that are ready-made -- so assembly is easy! We have unique and vibrant paint schemes not available anywhere else! We think they're the "best looking foamies on the planet"!

Our products can be found at: Griffwerks.com

Here is a build log of our most popular model - the MX.

The MX Model is made with 9mm 1.3 EPP foam, is approx. 34" wide and 36" long. It weighs approximately 71/2 ounces "ready-to-fly". This plane is great for flying in parks and small areas! This is a slow-flying plane that can be used as a 3D training plane.

Airplane Kits Include:
EPP foam aircraft parts that have been painted, hinged and sparred with carbon fiber
Motor mount installed
Carbon fiber rods for bracing
Ready-made carbon fiber pushrods
Control horns with plywood bases
EZ-link connectors for servo horns
Mmotor mount disk (if needed).

Electronics kit - includes:
Motor and speed control pre-soldered!
Servos come ready-to-install - centered and arms installed with ez-links
Keda BR2730-1300kv/1500kv motor w/prop saver
SAKER ESC-12A LBEC speed control
1 HXT 9g Servo
2 HXT 5g Servos
9 x 4.7 / 8 x 3.8 Slow fly propeller
O-ring prop saver

We can also put your personalized logo on our planes - contact us for info!

We are going to offer a Special Promotion to generate some interest and get a few of you guys flying these - For the first 10 RC Groupers that PM me and accept the conditions we will send a full kit and an electronics kit for $75 SHIPPED (to lower 48) the condition is that you will post your impressions of the build and flying experience in a new thread in this forum. We will offer 5 kits with a 1500 kv motor setup and 5 kits with the 1300 kv motor setup so we can get input on both.
asat is offline Find More Posts by asat
Last edited by asat; Aug 06, 2013 at 11:57 AM.
Reply With Quote
Sign up now
to remove ads between posts
Old Aug 04, 2013, 11:08 PM
Registered User
United States, UT, Ogden
Joined Nov 2004
624 Posts
Here's what the kit looks like: (electronics kits comes separately)
asat is offline Find More Posts by asat
Reply With Quote
Old Aug 04, 2013, 11:23 PM
Registered User
United States, UT, Ogden
Joined Nov 2004
624 Posts
Glue: We recommend using Welder, Foam Tack, Loctite Stik-N-Seal, or other flexibile glues. When gluing 2 pieces together, apply glue to both surfaces and let skin over before joining (like contact cement). When assembling this kit, make sure everything is straight, square and level to ensure optimal flying performance. I use the TLAR principle - "That Looks About Right"!

Step 1: On Level Surface:
Lay out bottom wing/nose/elevator pieces on wax paper and check for fit - trim if needed and glue together. Pin or weight pieces to hold in place and check for square with ruler - adjust as needed and let dry.
asat is offline Find More Posts by asat
Reply With Quote
Old Aug 04, 2013, 11:30 PM
Registered User
United States, UT, Ogden
Joined Nov 2004
624 Posts
Step 2: Install Bottom Fuselage
Place weights or books to hold bottom section in place. Insert bottom fuselage onto bottom section and check for fit - trim if necessary and glue in place. Check for straightness - sight down nose to tail - adjust if necessary. You can use weights or full soda/beer cans to help keep the fuselage straight and upright while drying.
asat is offline Find More Posts by asat
Reply With Quote
Old Aug 04, 2013, 11:38 PM
Registered User
United States, UT, Ogden
Joined Nov 2004
624 Posts
Step 3: Bracing
Install 1mm carbon fiber bracing along bottom of plane as shown. Cut brace to length and using a drilling motion with the end, penetrate the foam where you want the bracing to go - do this for both ends - you can bend it a little to help you align it and penetrate for the opposite end. Ensure that the bracing "overlaps" a bit or at least touches end to end, this makes for a more rigid install. We recommend preinstalling all of the bracing to ensure alignment of the bracing and lower fuselage foam - site to make sure it's still straight. Then glue, recheck and let dry.
asat is offline Find More Posts by asat
Last edited by asat; Aug 19, 2013 at 01:19 PM.
Reply With Quote
Old Aug 04, 2013, 11:42 PM
Registered User
United States, UT, Ogden
Joined Nov 2004
624 Posts
Step 4: Install Aileron Servo
Remove weights and turn plane over. Install large servo - (9 gram recommended) into front slot with servo horn facing aft with wire protruding on left side - ensure servo arms are level with wing. Glue in and let dry.
asat is offline Find More Posts by asat
Reply With Quote
Old Aug 04, 2013, 11:46 PM
Registered User
United States, UT, Ogden
Joined Nov 2004
624 Posts
Step 5: Install Upper Fuselage
Support wing and lower fuselage using blocks or cans, etc. to ensure a level wing and elevator. Check upper fuselage for fit and trim if needed. Glue in - then check for straightness - sight down nose to tail - adjust if necessary. Let dry.
asat is offline Find More Posts by asat
Reply With Quote
Old Aug 04, 2013, 11:50 PM
Registered User
United States, UT, Ogden
Joined Nov 2004
624 Posts
Step 6: Install Elevator/Rudder Servos ** Servo placement and pushrod position is critical ** (5 gram servos recommended)
Orient servo arms on elevator and rudder servos forward and upward facing.
Install rudder servo/pushrod/control horn on aircraft right side.
Install elevator servo/pushrod/control horn on left side (forward servo location). Failure to do so will result in improper pushrod length and orientation.
asat is offline Find More Posts by asat
Reply With Quote
Old Aug 05, 2013, 12:06 AM
Registered User
United States, UT, Ogden
Joined Nov 2004
624 Posts
Step 7: Install/Hinge Rudder
Using scrap foam (included) - pin to vertical stab. Flex elevator to full up position. Align rudder hinge and pin in place to the support piece. Apply a thin bead of glue to the hinge line and remove excess glue with a squeegee technique using a small flat tool (popsicle stick or similar). Let dry and remove pins and support.
asat is offline Find More Posts by asat
Reply With Quote
Old Aug 05, 2013, 12:14 AM
Registered User
United States, UT, Ogden
Joined Nov 2004
624 Posts
Step 8: Install Control Horns
Using a 1/16" drill bit - gently drill a hole in marked control horn locations. Apply glue to the control horn base. Install control horns, orienting the aileron horns at an angle consistent with servo arm and pushrod travel. Elevator/rudder control horns are oriented parallel to pushrod position. Let dry thoroughly.
asat is offline Find More Posts by asat
Reply With Quote
Old Aug 05, 2013, 12:24 AM
Registered User
United States, UT, Ogden
Joined Nov 2004
624 Posts
Step 9: Install Pushrods
Install pushrods with the Z-bend end in control horn bottom hole (closest to surface). Loosen screw from servo arm linkage and insert straight end into linkage hole. Adjust control surface level with servo arm at 90 degrees and tighten linkage screw. Repeat for all pushrods. Aileron straight ends may need trimming after installation to allow full servo travel.
Install elevator/rudder plywood pushrod guides by slotting fuselage foam to support the pushrod at equi-distant intervals. Adjust so that pushrod movement is straight and level from servo to control horn. Glue in place using medium CA and kicker. Trim protruding plywood from opposite sides if needed.
asat is offline Find More Posts by asat
Reply With Quote
Old Aug 05, 2013, 12:27 AM
Registered User
United States, UT, Ogden
Joined Nov 2004
624 Posts
Step 10: Tail Bracing
Install tail bracing into horizontal stab after pushrod installation. Support aircraft using blocks/cans as previously. Sight from nose to ensure elevator/rudder are level and tail is straight. Glue in bracing and let dry.
asat is offline Find More Posts by asat
Reply With Quote
Old Aug 05, 2013, 12:42 AM
Registered User
United States, UT, Ogden
Joined Nov 2004
624 Posts
Step 11: Wiring/Motor/ESC/Receiver
Cut slots in foam to route servo wires to bottom left side of aircraft.
Install motor by loosening motor mount fastener and inserting motor shaft tube into motor mount up to the rubber bumper. Tighten fastener.
Route ESC and motor wires to the left side of aircraft and fasten ESC with velcro. Slot foam and route battery connector to the right side of aircraft.
Connect ESC and servos to receiver (not included) and install in position to be determined by CG location.
Install velcro strip for battery on right side nose area of aircraft.
Final placement of all components should be accomplished after determining CG location.

CG is approximately 1/8" behind wing spar. You will probably want to move it aft, but that's a good place to start. Once set - you can use the battery location to alter the CG. I like to set the CG so it flies the same upright or inverted.

As always, check all control surfaces for correct movement and throws before flying. Tame the throws down using dual rates and/or exponential if you're not used to flying 3D.

If using beer cans to support your airplane - now would be a good time to crack one open and congratulate yourself - but only one if you're planning on flying! You can drink the rest when you're done ..... Griffwerks.com
asat is offline Find More Posts by asat
Reply With Quote
Old Aug 06, 2013, 11:54 AM
Registered User
United States, UT, Ogden
Joined Nov 2004
624 Posts
***promotion special***

We are offering a Special Promotion to generate some interest and get a few of you guys flying these - For the first 10 RC Groupers that PM me and accept the conditions we will send a full kit and an electronics kit for $75 SHIPPED (to lower 48) the conditions are that you will post your impressions of the build and flying experience in a new thread in this forum. We will offer 5 kits with a 1500 kv motor setup and 5 kits with the 1300 kv motor setup so we can get input on both.

Awesome deal - we hope to hear from you guys....

Lou Griffin
Griffwerks Foamies
asat is offline Find More Posts by asat
Reply With Quote
Old Aug 06, 2013, 12:10 PM
Old age is not for sissies
Azarr's Avatar
Dayton Intl, Ohio, United States
Joined Jan 2000
7,992 Posts
Nice paint, any flying videos?

Azarr
Azarr is offline Find More Posts by Azarr
Reply With Quote
Reply


Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
Discussion scratch build foamie help needed mark3092 Foamies (Scratchbuilt) 19 Jan 06, 2013 04:41 PM
Two foamys/ four servos Ducati Mechanic Non R/C Items (FS/W) 6 Jan 04, 2013 09:08 PM
Discussion Foamy Plans Bird Dog Don Lucas 3D Foamies 1 Jan 03, 2013 09:59 PM
Sold Mad Aircraft P-40 Warhawk foamie Jblk9695 Aircraft - Sailplanes (FS/W) 4 Jan 02, 2013 09:40 PM
Wanted dw foamy,or insane foamy storm any foamy mattox Aircraft - Electric - Airplanes (FS/W) 0 Mar 15, 2010 12:46 AM