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Old Jul 15, 2011, 02:34 PM
It's Not Too Windy...Man Up
ALL American's Avatar
USA, CT, Wallingford
Joined Oct 2009
1,458 Posts
Mini-HowTo
E Flite P51B - Conversion and Installation of the New FMS Version 6 Tail ETract

Here's the base retract:

http://www.pw-rc.com/product_info.ph...oducts_id/1943

Not too shabby for $16.00!

The E-Flite 10-15 Steering Arm cost about half that. http://www.e-fliterc.com/Products/De...ProdID=EFLG113

I think the above listed assembly is a steerable version of this retract

http://www.pz-servos.com/en/products...etail&P_Id=835


Here's how I modified this small E-Tract unit to fit into the E-Flite P51B's existing tail wheel opening and to steer via a pushrod linkage.

I will add text when I get a chance. For the time being, the photos are self-explanatory




Parts

Name: FMS Version 6 Tail Retract StockTop View.jpg
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Description: Name: FMS Version 6 Tail Retract Stock Side View.jpg
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Description: Name: E Flite Steering Arm.jpg
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E-Flite 10-15 Steering Arm Modifications Required

Name: E Flite Steering Arm Modification.jpg
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Description: Name: Strut - Steering Arm Brass Spacer.jpg
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Description: Name: Modified Steering Bracket.jpg
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E-Tract Unit Disassembly

Name: Disassembled E-Tract.jpg
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Description: Name: Discard Parts.jpg
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Description: Name: Strut Disassembly.jpg
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E-Tract Unit Modifications Required


Strut Modification

Name: Strut Modification.jpg
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Description: Name: Strut Modification 2.jpg
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Description: Name: Modified Strut.jpg
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Trunnion Modification Name: Trunnion Modification.jpg
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E-Tract Right Housing Modifications Name: Retract Housing Right Side Modification.jpg
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Description: Name: Retract Housing Right Side Modification 2.jpg
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Reassemble Name: Reassembled E-Tract.jpg
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Fabricate and Install a Bottom Mounting Plate

Name: Bottom Mounting Plate.jpg
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Description: Name: Mounting Plate Attached.jpg
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Description: Name: Assembled Unit Ready for the Linkages.jpg
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Install Pushrod Guide Plate - Note the Tubing Bushing Name: Install Pushrod Guide.jpg
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E-Tract Installation

Start the insertion in the deepest part of the retract bay, the front. Use a clockwise twisting motion and wiggle if needed. Insertion should NOT require any force. The unit will go in freely if it is turned in at the correct angles.


Step 1 Name: Insertion Step 1.jpg
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Description: Step 2 Name: Insertion Step 2.jpg
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Step 3 Name: Insertion Step 3.jpg
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Description: Step 4 Name: Insertion Step 4.jpg
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Drill Mounting Holes Name: Drill Holes for Mounting.jpg
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Description: Name: Drill Last Hole for Mounting Gear Down.jpg
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Remove, Install Pushrod and Steering Linkages Name: Test Fit - Remove and Add Linkages.jpg
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The only way I can make this easier is to do it for you!
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Last edited by ALL American; Jul 15, 2011 at 02:47 PM.
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Old Jul 16, 2011, 12:13 PM
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flmlm's Avatar
Holly Hill, Fl.
Joined Mar 2005
702 Posts
Wow, blundering boob free instructions........excellent documentation!!!Thanks a bunch

Regards
Mike
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Old Jul 16, 2011, 03:44 PM
It's Not Too Windy...Man Up
ALL American's Avatar
USA, CT, Wallingford
Joined Oct 2009
1,458 Posts
Quote:
Originally Posted by flmlm View Post
Wow, blundering boob free instructions........excellent documentation!!!Thanks a bunch

Regards
Mike
Thanks Mike!

I can't tell you how many different servoless retracts I've tested, how many different steering linkage configurations I've tested and how many tries it took to make it fit into the tiny, shallow opening of the P51B. I settled on this setup because it is the lightest E-Tract and the most reliable steering linkage I could come up with. Total weight is 1.25 ounces, including the mounting plate, E-Flite Steering Arm and clevis.

I may elaborate a bit or add more pictures at a later time, but I think what I've posted is fairly self-explanatory. If you have any questions let me know?

Regards,

Anthony
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Last edited by ALL American; Jul 18, 2011 at 07:49 PM.
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Old Jul 18, 2011, 05:20 PM
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Holly Hill, Fl.
Joined Mar 2005
702 Posts
Anthony

Your diligence is appreciated thats what these groups are all about modellers helping modellers.

Regards
Mike
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Old Jul 18, 2011, 07:50 PM
It's Not Too Windy...Man Up
ALL American's Avatar
USA, CT, Wallingford
Joined Oct 2009
1,458 Posts
Quote:
Originally Posted by flmlm View Post
Anthony

Your diligence is appreciated thats what these groups are all about modellers helping modellers.

Regards
Mike
Please post some pics of your setup when it's complete and feel free to PM me if you need some help.

Regards,

Anthony
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Old Jul 18, 2011, 08:33 PM
Registered User
flmlm's Avatar
Holly Hill, Fl.
Joined Mar 2005
702 Posts
I was thinking about what about some tail wheel gear doors...perhaps something like the set up on the FMS Mustang....wouild be nice to have the tailwheel bay covered when retracted.....just isn't much room inside. Just a thought that I'm kicking around....

Regards
Mike
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Old Jul 18, 2011, 09:00 PM
It's Not Too Windy...Man Up
ALL American's Avatar
USA, CT, Wallingford
Joined Oct 2009
1,458 Posts
Quote:
Originally Posted by flmlm View Post
I was thinking about what about some tail wheel gear doors...perhaps something like the set up on the FMS Mustang....wouild be nice to have the tailwheel bay covered when retracted.....just isn't much room inside. Just a thought that I'm kicking around....

Regards
Mike
Mike,

I am happy that the E-Tract fits! There is physically no room to spare when installing the assembled E-Tract into the the retract bay. Therefore, any hinges would be in the way. Now, if the hinges and doors can be added after the E-Tract is inside of the retract bay and made removable for servicing the retract, then I don't see any reason why it is not doable. If you figure out how to install gear doors please share. For the time being, I am happy that I don't have to look at a tail wheel hanging down or watch it retract in the wrong direction.

Now if the automotive paint supplier ever comes through with an Olive Drab that matches the Oracover I'll be able to finish my plane.

Regards,

Anthony
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