Project: wlawrence   -  
            Listing for Category : cowl
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Builder Name:William Lawrence   -  
Project:   Sonex   -   VIEW REPORTS
Total Hours:1884.3
Total Flight Time:
Start/Last Date:Nov 21, 2018 - No Finish Date
Engine:Aerovee
 
Friendly URL: https://eaabuilderslog.org?s=wlawrence

Home or Last Project Picture

Aug 28, 2022     Details       Category: Cowl
Installed a Tinnerman to secure the lips of the cowl outlet flaps together, and added retaining washers to the Cam-Locks


 
Jan 07, 2022     Work Continues       Category: Cowl
Ryan Young here, the new owner of this project. I've moved it to San Rafael airport, CA35, established my "shop" in half of a leaky Port A Port, and I'm pecking away at the details, mostly firewall forward, sealing up the baffling, improving air flow through the heads, working on the battery box, and putting the lips on the cowl outlets to create a low pressure zone to suck hot air out even in a climb, fabricating inspection port covers, and HOURS of knocking off the 20+ year old protective coating off the flaps and ailerons, not pictured.


 
Jan 13, 2021     Drill Holes and Rivet Quarter Turn Retainer onto Cowl - (2 hours)       Category: Cowl
Bill Lawrence drilled holes, countersunk for rivets and riveted quarter turn retainer onto cowl to replace the one removed in order to reinforce the area around the tube added to guide the hinge pin into the cowl lower hinge.


 
Jan 12, 2021     Trim and Dress Cowl Fibreglass Reinforcement. - (1.5 hours)       Category: Cowl
Bill Lawrence trimmed and dressed the previously layed fibreglass reinforcement for the guide tube to help locate the lower front cowl hinge pin.


 
Jan 10, 2021     Shorten Hinge Pin Tube in Lower Cowl and Lay Up Fibreglass for Reinforcement - (4 hours)       Category: Cowl
Lee Teicheira and Bill Lawrence cut hinge pin guide tube in lower cowl to proper length, dressed cut surface and layed up fibreglass over area for reinforcement.


 
Lee Teicheira fabricated and epoxyed hinge pin guide tube in place on cowl to ease installation of piano hinge pin. Cut hole in cowl for access to gascolator valve for securing fuel sample.


 
Sep 27, 2020     Prepare fuel filler door for paint - (2 hours)       Category: Cowl
Sand smooth fuel filler door and prime in preparation for painting.


 
Sep 23, 2020     Filling Gap On Fuel Filler Door (continued) - (2 hours)       Category: Cowl
Reapply filler to fuel filler door gap to fill additional low spots.


 
Sep 20, 2020     Fuel Filler Door Gap - (2 hours)       Category: Cowl
Bill Lawrence filling low spots in fuel door gap filler from previous attempt.


 
Sep 16, 2020     Fit and Bond Gap in Cowl Fuel Door - (4 hours)       Category: Cowl
Lee Teicheira and Bill Lawrence trim and fit fuel door to fit opening in cowl as well as fill gap in fuel door with bonding material.


 
Sep 15, 2020     Trim Fuel Door Flange - (1 hour)       Category: Cowl
Bill Lawrence marked, trimmed and dressed flange for fuel door opening.


 
Sep 15, 2020     Canopy Fuel Filler Door Fabrication - (10 hours)       Category: Cowl
Reinstall cowl and windscreen to finalize fit. Remove both and Bill Lawrence sanded and dressed cowl rear top edge. Lee Teicheira, Bill Lawrence and Ryan Young riveted fuel door hinge to door and cowl. Laid up fiberglass to join two halves of fuel door and positioned to cowl to fit prior to setting up.


 
Sep 09, 2020     Trim Upper Rear of Cowl - (3 hours)       Category: Cowl
Using trim lines previously established by mating to windscreen, Lee Teicheria, Bill Lawrence and Johan Verhoek trimed the upper rear cowl and made ready for finishing the edge.


 
Sep 09, 2020     Riveting Piano Hinges to Cowl - (2 hours)       Category: Cowl
Bill Lawrence and Johan Verhoek rivet each position (every inch) on piano hinge as you pull clecos. Five hinges total.


 
Sep 09, 2020     Fuel Filler Door Camlock Receiver - (2 hours)       Category: Cowl
Drill out rivets on old receiver. Match holes for new receiver. Rivet new receiver in place.


 
Sep 08, 2020     Fit Windscreen to Cowl - (6 hours)       Category: Cowl
Lee Teicheira, Harvard Holmes and Bill Lawrence secured cowl to fuselage and fit windscreen to frame in order to mark cowl for trimming on upper rear where it meets windscreen.


 
Sep 08, 2020     Attach Camlocks to Lower Front of Cowl - (0.8 hour)       Category: Cowl
Lee Teicheira attached camlocks to lower front of cowl with retainer rings using special tool for that purpose.


 
Sep 08, 2020     Rivet Cowl Camlock Receivers - (4 hours)       Category: Cowl
Harvard Holmes and Bill Lawrence rivet camlock receivers for upper rear of cowl to firewall upper flange.


 
Sep 06, 2020     Firewall top flange for mounting cowl - (4 hours)       Category: Cowl
Match holes in cowl to top of firewall and rivet flange to firewall.


 
Sep 02, 2020     Angle Brackets for Cowl Side Camlocks (continued) - (9 hours)       Category: Cowl
Rivet angle brackets for cowl side 1/4 turn camlocks to firewall. Drill holes fore camlock receivers.


 
Sep 01, 2020     Angle Brackets for Cowl Side Camlocks - (3 hours)       Category: Cowl
Drill depressions for rivet heads on firewall. Drill No. 40 holes for clecos. De-burr holes and dress edges in preparation for riveting. Rivet upper R/H bracket into place.


 
Aug 25, 2020     Trim Flange For Fuel Filler Door - Make Angle Brackets For Cowl Side - (9 hours)       Category: Cowl
Lee Teicheira and Bill Lawrence trim and dress flange for fuel filler door camlock. Measure, cut and dress angle brackets for camlocks that will secure cowl sides to fuselage. Fit, drill and cleco first bracket to fuselage.


 
Aug 23, 2020     Fit and Secure Check Oil Door and Add Camlocks to Cowl - (9 hours)       Category: Cowl
Lee Teicheira, Bill Lawrence and Frank Kelly cut opening in flange for oil check door, fit door to opening and secure to cowl with camlocks.

Also add camlocks to lower front of cowl.


 
Aug 19, 2020     Engine Oil Dipstick Access Door - (8 hours)       Category: Cowl
Locate and cut engine oil dipstick access door and lay fiberglass for flange to support door.


 
Aug 18, 2020     Fit Fuel Door to Cowl - (7 hours)       Category: Cowl
Sand to shape engine cooling openings. Reassemble cowl to assure continued proper fit and rework opening for hinge pin access on lower front of cowl.
File, sand, fit and attach hinge to fuel door and cowl. Lay up fiberglass to make flange to support R/H side of fuel door on cowl.


 
Aug 16, 2020     Cowl Fastener Flange and Cooling Vent Work - (10 hours)       Category: Cowl
Lee Teicheira and Bill Lawrence split canopy, cut and shape fastener flange, make final cut on engine cooling vent holes and oil cooler vent hole and sand to shape.


 
Aug 12, 2020     flange for quarter-turn camlocks - (3 hours)       Category: Cowl
Laying up fiberglass for flange for quarter-turn camlocks.


 
Aug 11, 2020     Cutout for fuel door - (1 hour)       Category: Cowl
Tape, measure and cut opening in cowl for fuel door.


 
Aug 09, 2020     Cowl Work Continues - (24 hours)       Category: Cowl
After partially cutting openings in cowl for oil cooler ventilation, fuel door and exhaust pipes to exit cowl, Lee Teicheira, Pete Mitchell, Frank Kelly and Bill Lawrence drill holes and cleco piano hinges in place.

RRY notes 2023: none of the cowl pieces are truly hinged. Piano hinges with removable pins are used to "zipper" sections together. Lee elected to use a mix of the plans scheme, which is almost exclusively piano hinge "zippers", and quarter turn cam locks. I prefer Southco fasteners, me, and I would NOT have used camlocks on the sides of the cowl at the firewall, but You Do You.


 
Aug 06, 2020     Piano Hinge Installation - (14 hours)       Category: Cowl
After measuring, cutting and fitting the cowl the piano hinges are being installed so that it can be secured to the fuselage.


 
Aug 02, 2020     Cowl Preliminary Fit - (10 hours)       Category: Cowl
Frank Kelly and Bill Lawrence rough cut and rough fit newly acquired cowl to propeller hub and fuselage.


 


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