Bartman
Defender of the Noob!
this thing has sat too long! this week is the week we get it done and......well, you know the rest
Sport PAU 27% Pitts Challenger Build/Review
- Thread starter Bartman
- Start date
ChickenBalls
"Cool Guy"
Bart my guess would be he's thinking of metal to metal making rf noise, probably not as much concern as if it had 72mhz system
Terryscustom
640cc Uber Pimp
this thing has sat too long! this week is the week we get it done and......well, you know the rest
Cool, we miss you guys. Choke is a good idea, if it were me I'd put some heat shrink on the pushrods or a sleeve like the throttle cable but like CB said it may be an old school concern, but never a bad idea.
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Bartman
Defender of the Noob!
it's from an old build, just thought I'd reuse it but I can redo the same thing with a sleeve of fuel tubing inside the coil, that would be better, just have to get the inside diameter of the coil just right
Nailed it. I have never had an issue, but some people have. It would be an easy thing to do.
Bartman
Defender of the Noob!
Moving on to the cowl, I still get anxiety when it's time to cut a finished cowl. It all went together pretty well except for a couple of minor details like the lower mounts that needed to be shaped a little to let the cowl roll around the lower corners without bulging. The hardware marked COWL was 6-32 and the blind nuts that are pre-installed by the factory are 4-40 so I used what I had but I'll have to pick up some button head 4-40 x 1/2" to finish it off nicely.
The cowl was pretty tight until the bottom was opened up but all-in-all, minor stuff.
I might still have to do a little trimming and I've got two Pitts style mufflers but one is much heavier than the other so we'll see how weight-and-balance looks before choosing which one will go with the plane and then if the cowl needs more trimming to make it fit.
The cowl was pretty tight until the bottom was opened up but all-in-all, minor stuff.
I might still have to do a little trimming and I've got two Pitts style mufflers but one is much heavier than the other so we'll see how weight-and-balance looks before choosing which one will go with the plane and then if the cowl needs more trimming to make it fit.
Bartman
Defender of the Noob!
The wings and tail section are the next big step forward and the sequence is a little odd but there's good reason for it so here it is
1. join wing halves together, top and bottom
2. attach bottom wing to the fuselage, double check alignment, attach fairing assembly
3. with bottom wing attached, check alignment of horizontal stabilizer and glue into place
4. glue vertical stabilizer into place
5. maybe attach elevator halves and rudder by gluing the pin hinges into place
6. top wing positioning and mounting along with mounting of interplane struts
The goal is to make sure the factory mounting points for the lower wing are correct and then use a correctly placed lower wing to get the tail nice and straight followed by proper placement of the top wing and I-struts.
To join the upper and lower wing halves there is a joiner that needs to be epoxied into place. There'a a lot of gluing surface to be coated so I glued each joiner into one wing panel, let it set, and then glued the halves together. At this point I've got the top and bottom wings joined and the lower wing fairing attached and sealed up. I've got to get the tail feathers attached next
After attaching what I thought was a nicely fitting fairing I found that I had some gaps. Rather than seal it up with a trim strip I wanted to seal it enough to keep out exhaust residue and dust since it's under the plane in the wash of the engine and exhaust. So with a few suggestions from my fellow GSN members I mixed up some epoxy and used ink from a red Bic pen for tint. I also used an empty epoxy bottle as an applicator to force the epoxy into the crack after taping it all off.
1. join wing halves together, top and bottom
2. attach bottom wing to the fuselage, double check alignment, attach fairing assembly
3. with bottom wing attached, check alignment of horizontal stabilizer and glue into place
4. glue vertical stabilizer into place
5. maybe attach elevator halves and rudder by gluing the pin hinges into place
6. top wing positioning and mounting along with mounting of interplane struts
The goal is to make sure the factory mounting points for the lower wing are correct and then use a correctly placed lower wing to get the tail nice and straight followed by proper placement of the top wing and I-struts.
To join the upper and lower wing halves there is a joiner that needs to be epoxied into place. There'a a lot of gluing surface to be coated so I glued each joiner into one wing panel, let it set, and then glued the halves together. At this point I've got the top and bottom wings joined and the lower wing fairing attached and sealed up. I've got to get the tail feathers attached next
After attaching what I thought was a nicely fitting fairing I found that I had some gaps. Rather than seal it up with a trim strip I wanted to seal it enough to keep out exhaust residue and dust since it's under the plane in the wash of the engine and exhaust. So with a few suggestions from my fellow GSN members I mixed up some epoxy and used ink from a red Bic pen for tint. I also used an empty epoxy bottle as an applicator to force the epoxy into the crack after taping it all off.
Terryscustom
640cc Uber Pimp
Ahhhh, I was wondering what the red epoxy thing was all about. Looks good Bart.
