Issue 98-Assembling the undercarriage.

wonwinglo

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Issue 98 contains the required second set of undercarriage legs,clear the workbench and get down to the assembly,follow this sequence and make life easier for yourself,as yet Hachette have not even mentioned anything about putting this little lot together but we have enough parts so why waste time ? lets make a start-

1/Firstly we need the assembled small wing that fits between the undercarriage legs,in the middle is a box structure,this is the part that surrounds the brass tube that does the springing dampening bit,on the original it is a bungee rubber device,we will be using ordinary synthetic 'O' Rings to simulate this,raid your wifes/girlfriends sewing kit and borrow the crotchet hook,the smaller the better,if you do not have one of these then make one hook from 22 swg wire,bend one end into the hook and the other into the handle or slip through a piece of wooden dowel,you will need to exert some energy here so make up a suitable tool to do the job.

2/ Slip the brass tube through the centre of the wooden box,it should just end flush with th end rib of the small aerofoil wing,push it back and slip on the 'O' rings over the tube,next slide on your pre-assembled strut arrangement ( ie the araldited up assembly ) this fits onto the end of the box nice and snug,with your hook start one end and pull the 'O' rings through the hole at the top of the assembly outwards,place a slither of wood to hold them in place and then remove the hook and come upwards from below ( ie between the mini-wing )

next loop the rings and pull downwards towards the brass tube,carefully slip the rings over the tube and push well on.

3/Now repeat this step for the other end by pushing the tube outside of the endplate rib,once again take the wire hook or better still the crotchet tool and pull the other 'O' rings through the upper casting hole,make sure they are held fast on the tube before releasing the hook.

4/You should now have two undercarriage legs dangling in mid air and held upwards by the rubbers,be careful as it is only the rubber rings that are holding everything together,now take the legs and with your model turned upside down offer the front legs to the brackets,with two 10 BA bolts,lock the front legs into place but leave loose at this stage.

5/Now focus your attention on the rear legs,attach these likewise into place,eye the model from the front and adjust sideways as necessary,you can place the model resting onto the undercarriage now carefully,block up the lower wing and nip up the bolts to lock the legs in place.

6/Now turn the model over again resting it on the workbench,next adjust the metal bracket ( ie the part lower of the struts ) and make sure this is sitting onto the ends of the suspension box,it should be a slide fit,lock into pace with a little cyno to locate it.

7/Important-now take the four pins with half circle and a flat at one end,press these into the metal fitting through the end of the small aerofoil,should they need adjusting just clean up a little with a Swiss file,thes pins lock the box to the end ribs,apply a little epoxy to these and press into place making sure that everything is nice and square.

8/Turn the model over again and rest the undercarriage on your workbench,prop up the tail with something and allow the assembly to dry.

9/Last job is the wheels,clean up the axles so they fit snugly into the brass tube,you will need two small washers to stop the wheels from rubbing against the aerofoil,slip these over the axles and with a small amount of epoxy on the axles simply press into place.

Thats it job done,there is plenty of room still to rig the flying controls ( ailerons ) I am just waiting to see where exactly the front cables go to where they come out below the front shroud slot ? at the moment this is not clear in my mind as it comes at rather an acute angle ?

Dont put off assembling your undercarriage as Hachette are making a right meal out of these final stages,concentrating instead on their awful plastic covering material with equally awful instructional pictures,the next challenge will be to work out how to assemble that big heavy engine up front without it falling off,remember we modified the tube slightly to give yet more support in that area,until we get the cowl in the final week then we are working in the dark,but no doubt there will be a solution,if you think that you have one then dont keep it to yourself ! share it here to assist others.
 

wonwinglo

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Special instructions#3-The Wheels.

The wheels need a bit of attention,as the centres are out of line and are wobbly and out of line,to rectify this use a drill-stand with a suitable drill bit,and run through the centres again making sure that the wheel is held perfectly flat.

The thickness depends on which brass bushing you use and its wall size,once the hole has been drilled gently flair over the brass tube at the end with a centre punch etc,now replace the bearing and continue to flare over the other end after cutting the brass tube to length,this will do the job.
 
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