After fitting the fuel, oil and hose systems it’s time to see if the cowls fit properly around the radiators. It’s a two person job so Karen has come to help me this morning.
Exhaust pipe is very close but the clearance should be ok.
However the water radiator is too tight so the position and cowl will need to altered.
I will need to drill a hole for the fuel drain so I can check the fuel before each flight.
From the front the water radiator looks fine.
From the rear, the radiator brackets disconnected to allow movement for the trial fit.
The cowls fit but again only with the radiator brackets disconnected
Underneath looks fine.
The oil radiator fits fine with a slight adjustment to its position.
All seems to be centrally located.
Need to measure the front of the cowl for the spinner size.
And the distance from the engine flange plate to the cowl. This allows a calculation to be done for the prop extension that needs to be fitted.
The fuel pipes each need to be bent 45 degrees to accept the connection pipes from the fuel selector.
I had a number of things planned to do tonight which included installing the reducing connector on the return line, bending the fuel pipes in the cockpit to accept the pipes from the fuel selector, applying Loctite to the oil radiator bracket and mount bolts and fitting the NACA air ducts.
First up is bend the fuel pipes using a pipe bender. Got to be careful that I don’t bend the pipes too far as it’ll be virtually impossible to bend them back. Luckily it has an angle guide to help.
All three pipes now bent as required. It was easier than I expected apart from the pipe on the right which was impeded by the adjacent bracket.
Onto the the fuel return line. First job is to cut the pipe and insert the reducer.
The return line is 6mm i.d. so the reducer converts from 6mm to 8mm so it can be connected to the 8mm aluminium return line.
Clamps and a new section of fire sleeving is slid over the pipe and wire locked together and at the end.
Loctite 243 is applied to the oil radiator threads and the bolts are tightened immediately.
Loctite is also added to the threads of the oil radiator bolts that hold it to the engine.
The carburettor banjo bolts are tightened not the fuel piping is complete.
The NACA ducts are positioned and 4 x 2.5mm hole drilled to take the rivets to hold it into place.
The NACA duct in place secured by 4 temporary rivets (Clecos). The last job on this will be to add some silicon sealer to the face of the duct and rivet into place but its getting late, so time to go.
Following the build of my Bristell NG5 Kit No. 382 Registration G-MLSY
G-MLSY 