Sapac L39 test flight and build pictures - Page 3

EDDIEGIGOWATTS · Mar 20, 2009, 06:26 PM

they should work Ok just make sure you soak the horns with thin CA
its harder to get flutter when the hinge line is at top

lashmett75 · Mar 20, 2009, 11:50 PM

Tonight I got the fan together and balanced. Thanks to Eddie for the trick. I am alittle leary about the 4s as I couldnt get the fan as tight on the shaft as I would have liked to. Seem that the collett and retrainer dont mesh to well. I think the retrainer is to large. Also I installed the fan and to my dismay the fans front nose cone was rubbing badly. I will fix that with the dremel tomorrow and sand the ducting on the inside.

I also completed the elevator install with servo. I will be completing the linkage tomorrow. Coming along well, and taking my time as she is a beautiful jet.

EDDIEGIGOWATTS · Mar 21, 2009, 01:02 AM

I know you Guy,s are having a problem with other manufactures motor shaft size
here is your fix for the 3.17 motors to fit the 4.mm adaptors
also gears pics

MFALLON · Mar 21, 2009, 01:20 AM

Eddie are you going to fly Saturday she looks ready to go

lashmett75 · Mar 22, 2009, 12:38 AM

Hey guys,

My servos (hs-65cg) for flaps are buzzing in the normal flight position, and when the flaps are down it has no issues? Any ideas on how to fix it. I have bent the rod to line up more straigh to the servo arm, but no luck. Seems that the flaps have some pressure (or maybe to much CA) holding them just out of level. I just havent tinkered with them that much, and if anyone has a quick fix...I would appreciate it.

James

retiredluvrc · Mar 22, 2009, 12:51 AM

Ordered one of these, and can't wait to get it! Gonna go with the MAP retracts, 1/8 wire, and a hot setup! 4.5lbs of thrust on 4s! Awesome plane and great thread! So happy to have discovered RCgroups! Sorry to be so stoked, but I'm not the youngest guy in this hobby! I'm catching on quickly though. Been doing EDF for years now, and I'm glad to have finally found guys as crazy as I am for SPEED!

MFALLON · Mar 22, 2009, 08:31 AM

sapac now has retracts in stock

retiredluvrc · Mar 22, 2009, 11:57 AM

Quote:

Originally Posted by MFALLON

sapac now has retracts in stock

Mr. Fallon,

Are your retracts drilled out for 1/8th or thicker wire? I got the MAPs tapped out for 1/8 for extra support. Thank you.

Zman39 · Mar 22, 2009, 06:16 PM

Hey All,

Got the sapac retracts in (work nice!!) and all servos working, only thing left on wing is the wingtips. Eddie or Mike, what did you use to glue them on?

Thanks
Z

tho98027 · Mar 22, 2009, 07:06 PM

Eddie, what are you using for your powersystem?

oops. never mind. just saw it.

EDDIEGIGOWATTS · Mar 22, 2009, 07:44 PM

Quote:

Originally Posted by Zman39

Hey All,

Got the sapac retracts in (work nice!!) and all servos working, only thing left on wing is the wingtips. Eddie or Mike, what did you use to glue them on?

Thanks
Z

sand the mating area
5 minute epoxy one first then do the other making sure its straight
I used CA on the lens ,,slowly sand them till they fit perfect with 180 grit

lashmett75 · Mar 22, 2009, 08:47 PM

Got the flap servos figured out. Just needed to put some weight on them so they would sit flush with the wing. Got the retract valves and servo done. That was fun. It was my first time with air retracts, alot easier setup then mechanical. I am going to install the retracts tomorrow. I did order a set of scale struts, but they wont be in for 3 weeks. So it will be the wire struts till then.

Tested the power on the watt meter.

I was getting 950 watts, but they battery I had was not fully charged. Pretty good thrust from the exit, with the tube. Cant wait to taxi her around the street this week....hopefully.

James

carl rich · Mar 22, 2009, 09:13 PM

Who has scale struts for these small wires?

lashmett75 · Mar 23, 2009, 12:02 AM

Quote:

Originally Posted by carl rich

Who has scale struts for these small wires?

Originally Posted by LJE4357
The retracts we make for the soon to be releassed TurbinEtor can be used in the model with just a slight modification we can accomplish. The retracts are bigger that my Micro retracts, but smaller that my Mini ( SpringAir 602 compatable). They can handle aircraft weight's up to 8 lbs with no problem. Also our semi scale L39 struts can be utilized with them. The cost is $200 for the complete set, plus shipping. That includes all the support hardware. Those of you that have purchased our retracts in the past know that we produce an excellent retract with no slop and lock properly. Oh !.... they don't leak either.

Larry
SouthEast Model Products

Carl,

I cant seem to find the pictures that I saw of the scale struts. I will keep looking though.

James

lavochkin · Mar 23, 2009, 02:22 AM

Those scale struts are mine! I had Larry make me a set a while back. They were quite awesome. They will not work with maps though. Because of the air cylinder and trunion style. So Larry made them with his retracts attached. Im very happy and they are quite cushy on landings. The only down side is they cost me over $500.00. That was the retracts and struts combined.

Mar 21, 2009, 01:02 AM	#33
EDDIEGIGOWATTS 1.21 gigawatts Join Date: Jul 2006 Location: Fort.lauderdale Florida Posts: 634	I know you Guy,s are having a problem with other manufactures motor shaft size here is your fix for the 3.17 motors to fit the 4.mm adaptors also gears pics Attached Thumbnails brass tubing to make adaptors for 3.17mm shaft to 4.mm use loctite on the motor shaft 77.6 KB · Views: 404 stock fix gear leg works fine 69.1 KB · Views: 436 stock gear 47.8 KB · Views: 340 all you do is set the wheel in there then lay the wire on top to see where you going to do youre bends you can actually use the fix mains ,I didnt use them because my wheels where too wide 50.5 KB · Views: 396 I turned down the wheel with a dremel to get it to fit 49.2 KB · Views: 362 you can see how much lower the production model sits 70.7 KB · Views: 638

Mar 21, 2009, 01:20 AM	#34
MFALLON www.SapacAmerica.com Join Date: Oct 2007 Location: Sapac Fl. Posts: 585	vistaview Eddie are you going to fly Saturday she looks ready to go Last edited by MFALLON; Mar 21, 2009 at 02:21 AM.

Mar 22, 2009, 12:38 AM	#35
lashmett75 TEAM EJF Join Date: Jul 2008 Location: Chandler, AZ Posts: 1,632	Flap servos buzzing Hey guys, My servos (hs-65cg) for flaps are buzzing in the normal flight position, and when the flaps are down it has no issues? Any ideas on how to fix it. I have bent the rod to line up more straigh to the servo arm, but no luck. Seems that the flaps have some pressure (or maybe to much CA) holding them just out of level. I just havent tinkered with them that much, and if anyone has a quick fix...I would appreciate it. James

Mar 22, 2009, 08:31 AM	#37
MFALLON www.SapacAmerica.com Join Date: Oct 2007 Location: Sapac Fl. Posts: 585	retacks sapac now has retracts in stock

Mar 23, 2009, 02:22 AM	#45
lavochkin Soviet Aircraft nut !!! Join Date: Oct 2006 Location: Mokena,Illinois -United States Posts: 4,735	Scale struts for an L-39 ! Those scale struts are mine! I had Larry make me a set a while back. They were quite awesome. They will not work with maps though. Because of the air cylinder and trunion style. So Larry made them with his retracts attached. Im very happy and they are quite cushy on landings. The only down side is they cost me over $500.00. That was the retracts and struts combined. Attached Thumbnails 193.1 KB · Views: 399 172.1 KB · Views: 412

Mar 20, 2009, 06:26 PM	#31
EDDIEGIGOWATTS 1.21 gigawatts Join Date: Jul 2006 Location: Fort.lauderdale Florida Posts: 634	they should work Ok just make sure you soak the horns with thin CA its harder to get flutter when the hinge line is at top

Mar 20, 2009, 11:50 PM	#32
lashmett75 TEAM EJF Join Date: Jul 2008 Location: Chandler, AZ Posts: 1,632	Tonight I got the fan together and balanced. Thanks to Eddie for the trick. I am alittle leary about the 4s as I couldnt get the fan as tight on the shaft as I would have liked to. Seem that the collett and retrainer dont mesh to well. I think the retrainer is to large. Also I installed the fan and to my dismay the fans front nose cone was rubbing badly. I will fix that with the dremel tomorrow and sand the ducting on the inside. I also completed the elevator install with servo. I will be completing the linkage tomorrow. Coming along well, and taking my time as she is a beautiful jet.

Mar 22, 2009, 12:51 AM	#36
retiredluvrc EDF passion Join Date: Mar 2009 Posts: 28	Ordered one of these, and can't wait to get it! Gonna go with the MAP retracts, 1/8 wire, and a hot setup! 4.5lbs of thrust on 4s! Awesome plane and great thread! So happy to have discovered RCgroups! Sorry to be so stoked, but I'm not the youngest guy in this hobby! I'm catching on quickly though. Been doing EDF for years now, and I'm glad to have finally found guys as crazy as I am for SPEED!

Mar 22, 2009, 06:16 PM	#39
Zman39 Registered User Join Date: Apr 2005 Posts: 52	Hey All, Got the sapac retracts in (work nice!!) and all servos working, only thing left on wing is the wingtips. Eddie or Mike, what did you use to glue them on? Thanks Z

Mar 22, 2009, 07:06 PM	#40
tho98027 Registered User Join Date: Aug 2004 Location: Boise, ID Posts: 478	Eddie, what are you using for your powersystem? oops. never mind. just saw it.

Mar 22, 2009, 08:47 PM	#42
lashmett75 TEAM EJF Join Date: Jul 2008 Location: Chandler, AZ Posts: 1,632	Got the flap servos figured out. Just needed to put some weight on them so they would sit flush with the wing. Got the retract valves and servo done. That was fun. It was my first time with air retracts, alot easier setup then mechanical. I am going to install the retracts tomorrow. I did order a set of scale struts, but they wont be in for 3 weeks. So it will be the wire struts till then. Tested the power on the watt meter. I was getting 950 watts, but they battery I had was not fully charged. Pretty good thrust from the exit, with the tube. Cant wait to taxi her around the street this week....hopefully. James

Mar 22, 2009, 09:13 PM	#43
carl rich EDF Nut Join Date: Jan 2006 Location: Cincinnati Posts: 1,559	Who has scale struts for these small wires?

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