Berwyn Bill

My Feedback: (16)

Mike, John, Steve,

I'm finishing up the Fusion 90 ARF and have a problem. The wing tube doesn't go through the fuse perpendicular, it's off just slightly. This results in about a 1/8" gap at the fuse on the top side of the wing on one side and 1/8" on the bottom on the other. The phenolic tubes in the wings seem dead on so I'm guessing it's the bit of phenolic that's been installed in the fuse that's not perfectly aligned. Can I sand out the pass through a bit to get the wings level or will that make the wings less stable under stress due to the added play? Most of my planes are one piece wings and both my 65" Yak and 62" Kat V2 were spot on in this area so I don't know how much play I can get away with here. I don't want to have to reset the phenolic in the fuse as I'm almost done and want the plane for the mini WI PB this weekend. I can grab some pics if necessary but you can picture what's happening pretty easily. Thanks,

Bill

EDIT: Sorry for the crappy pic but you can see the angle I have to work with. Any suggestions?

1THEPALMER

My Feedback: (1)

Hi Bill: I have the 40 size Fusion kit and managed to get the tube a bit out of square. It the arf follows the kit construction there is a large block in the fuse so you have a lot of meat to work with. If you just sand the outside edge on the top of the tube on the low side and the bottom on the high side with a large dia dowel you will be surprised how little material needs to be removed to allow the wings to pull up flush. I would mount the wings without the tube installed and check the fit including the tail alignment before starting, if the fuse is really twisted you may be better off requesting a new one.

AFSalmon

My Feedback: (3)

Bill, this is not an issue as the fuse tube support is really only a guide and the alignment of the wings is set by the antirotation pins and the sandwiching of the wings against the fuse once the wing bolt is tightened. Matter of fact it is perfectly ok for the tube to be a little loose in the fuse socket. This was exactly the same case on the 65" and 80" profile Edge and Yak kits and arfs previously and the same for both Fusion sizes. If you can't install the tube into the fule so that it is perpendicular without "overly" stressing or forcing the the tube straight, then simply take a round file and carefully remove the binding portion of the socket. It WILL NOT take much so be carful. Hope this helps.

Berwyn Bill

My Feedback: (16)

Thanks Mike! That's what I heard from a few Fusion owners but I just wanted to hear it from the horse's mouth (no offense ). She'll be ready to go for a maiden on Friday. Hope the new job is treating you right.

Bill

Thanks, 1thepalmer for your input too. I've got a .40 size Fusion kit waiting for some building weather!!

Berwyn Bill

My Feedback: (16)

Just an update, my Fusion .90 flies awesome!!! No problems at all with the wing tube. Wish the same could be said for the HS-81MG I had as my throttle servo. Luckily I caught it crapping out (bad potentiometer, AGAIN!!) in between flights. It's getting a 225MG after I widen the servo hole a bit.

Everyone who flew it at the WI ProBro loved it. For a big plane, it's tumbling ability is jaw-dropping. The KE spins are very tight and walls are stop-in-your-tracks tight with no wing drop. Nice job on this plane, OMP!!

Bill

southern_touch9

My Feedback: (3)

The 225 is a POS. I bought 4. Two were bad out of the box one failed in flight and the other cant find center well. I fly all hitech servos, I just wish they would work on there lower end stuff.

Berwyn Bill

My Feedback: (16)

I've had a number of 225MGs with no problems. Wish I could say the same for the 81MG. I've had some last years as throttle servos for shakey 4 strokes and then some die after a couple of run-ups on smooth 2 strokes. I even had one die right after mounting (as usual, bad potentiometer). This one that crapped out was actually one sent to me by Hitec as a replacement for the one that died after mounting. It's just too hit or miss for me. If I didn't mind having to rebalance the extra ounce on the nose, I'd just slap a 322hd on there and be done with it. Now that's a damn good $9 servo.

AFSalmon

My Feedback: (3)

Thanks Bill and good luck with the servo issues. I've used the HS-81s and HS 85s for years with no problems. Great throttle servos I think.

Berwyn Bill

My Feedback: (16)

Yeah, when it went bad at the WI ProBro, TailTwister yanked the hs-81 from his 40 size Fusion and we swapped it into the 90 so he and Steener could get check rides on the bigger Fusion. That servo is working great but I'm skeered of the 81 series now!!

The OS 1.20 AX is an awesome fit for this Fusion, Mike!! I know the .91 is plenty but the 1.20 really makes a boat-load of torque on the low end. and it's not too shabby in the vertcal drag races either!!!