IMAC The new Dalton 300 SP / 330

[orthobird]

Something else in the baggie are the servo box balsa and hardwood.

My first Dalton kit came with this servo box cut out template, I do not know about the current kits, but is is awesome. Not only can you use it on the wing it self to mark out the location, but you can also use it to assemble the servo box and assure it comes out square.

I will assemble it inside the rectangular cut out, and then make sure it up against the sides, then using my fingers, I will clamp in front to back and then make any adjustments, then wick it with thin CA.

Once it is wicked with CA, I remove, and then add more CA to all the edges and corners. No need to add more, because what will hold it in, is the glue used to adhere it to the foam and wing balsa sheeting.

 

[orthobird]

Before we set the incidence, we need to install the nylon bushings.

The key is, that the hole in the nylon bushing is parallel to the wing tube, such that, when the wing is put in and out, the stud enters the nylon bushing hole, in line, and without binding.


The way that I do this, is by using the 1/4" diameter aluminum cannulated tubes. These will also be my drill guide when the time comes to set the incidence. The shorter one is for the rear and the longer one for the front. The fuselage is tapered, wider in the front and thinner towards the rear, and therefore the bushing will sit in the inside of the FSS plywood, at an angle. I will demonstrate this later.

this is the front hole on FSS.

here is the rear hole on FSS

this is after drilling out the hole so that the nylon bushing will fit inside.

this is a testing of the fit of the bushing inside the hole.

the tube spans the fuselage. it will help hold the bushing in line, while the glue cures.

I then install the bushings with epoxy that has micro-baloons in it , so that it does not run.

here you can see how there is more contact in the back of the bushing, and it is gapped open in the front, so that it will be in line with the wing tube.

this tube is cannulated, so that once this is cured, I will still use this tube to drill the 1st hole to set the incidence. then I will use the 1/4" drill bit.

 

[orthobird]

Got home from work, and Once I got permission from the Mrs, I went to set the incidence on one wing.

First thing, I used my laser light to make sure the fuselage was level....

Once I did this, I checked it with my Robart incidence meter, then I went and placed the wing on, and placed the incidence meter there, and checked that it was at ZERO,

Once this was held in place, then I drilled the holes and inserted the studs.

I have the studs gluing in now, with Epoxy, then I will do the other side.

 

[orthobird]

Both wings, the incidence is set at Zero. I have glued in the studs into both wing roots.
Next for the wings is to cut out the ailerons, and hinge them, then the servo boxes, and to make the tunnels for the servo leads.

I took a break, and was excited to try to see how this new cowl is going to work out, so I started to do some measurements and trying to get a tactic as to how I will do this....

I have printed out this template of the DA 200 motor, and print it out to real scale...

I attempted to placed this bottom cowl on, but there were several areas blocking me, so I had to trim some areas.....

Once those 1st two areas were trimmed out, I realized I could not bring this in, until I cut out a hole for the carburetors. Once this cut out was done, I can then sneak the bottom cowl in, all the way to the back, and with the motor sitting directly on top of the baffle plate.

Here it is, sneaked in, and I can now start to mark it.....

 

[orthobird]

I then placed the template over, and passed around it again with a marker....

Now I can get a better idea of what I have to cut out...


once cut out, i test fit it, several times, each time, removing a little bit more, until i saw there was no contact, and at same time, trying to keep this gap as tight as possible...

top view

I then test fit the top cowl, and wanted to see how this 5" spinner would do, looks a bit small.

I am also looking at my spinner gap, not bad, maybe 5 or 6 mm.

 

[orthobird]

The 6" dave Brown spinner arrived today, and @tom wheeler nailed it! The 6" spinner is the perfect match. You all let me know what you think...

 

[sparkx38]

The 6" dave Brown spinner arrived today, and @tom wheeler nailed it! The 6" spinner is the perfect match. You all let me know what you think...

View attachment 54762 View attachment 54763 View attachment 54764

Looks like you nailed it with that one.

Sent from my XT1254 using Tapatalk

 

[JAG]

That looks good.

 

[scruffmeister]

@orthobird Cam, do you have a weight for that 6" spinner, including the backplate please?

 

[orthobird]

yes, I can compare to the 5", when I get home, I will weigh both of them.