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Author Topic: Reinforced Score pictures  (Read 3153 times)

Offline Chris Fretz

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Reinforced Score pictures
« on: December 21, 2017, 06:28:39 PM »
Anyone have some pictures of how they reinforced the nose and tank area of the ARF Score? I've been trying to search the site but nothing.  I find searching this site to be pretty difficult to find what I am looking for. What's the best way to remove hot glue? Did everyone leave the built in offset on the nose? What's the best way to beef up the wing mounted landing gear? Anyone got a link to some good info?

Thanks Chris
« Last Edit: December 31, 2017, 09:20:06 PM by #Liner »
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Offline Chris Fretz

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Re: Reinforced Score pictures?
« Reply #1 on: December 21, 2017, 06:33:52 PM »
I was planning on using this R/C mount...  Plus have Tom Morris controls for it.

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Offline Dan McEntee

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Re: Reinforced Score pictures?
« Reply #2 on: December 21, 2017, 08:47:47 PM »
  I know I have described my experience with the Score several times, but will cover it again here. My experience began when the engine parted from the rest of the fuselage in flight! It pulled to the right and the prop took a bite out of the right leading edge, The rest of the airplane flopped down in good shape.
   On my airplane, all the hot glue was coming apart, and that is what caused the problem. I could pick it off the joints with a tweezers or hemostats. Then I just used thin C/A along all the normal glue joints to re-assemble the front end, with some thinned epoxy brushed along the joints to help out and fuel proof things. I added some balsa triangles here and there where they looked like they might help out. After I was finished, it only added a half ounce to the overall weight of the airplane, including fixing the leading edge of the right wing. There is nothing wrong with the structure or design, the problem is the glue they used. One observation after I made the repair. I had never felt much vibration, really none at all, at the handle when flying the model. After the repair, I could feel the engine running at the handle. Nothing disturbing, just a significant difference. That is how "loose" the front end of the airplane was before the incident, and how solid it was after. I did not alter the engine offset. The model flies well enough as it is and I did not see a need to change anything. Mine had fuselage mounted carbon gear, and you may want to consider fuse mounted gear and install the necessary stuff to do that at this stage. As for beefing up the wing mounts, I didn't have to deal with that, but I would at least try to duplicate the rib sections where the blocks attach to the wing  as a re-enforcement there, at a minimum.
  What engine are you planning on?
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Offline Chris Fretz

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Re: Reinforced Score pictures?
« Reply #3 on: December 22, 2017, 05:35:16 AM »
  I know I have described my experience with the Score several times, but will cover it again here. My experience began when the engine parted from the rest of the fuselage in flight! It pulled to the right and the prop took a bite out of the right leading edge, The rest of the airplane flopped down in good shape.
   On my airplane, all the hot glue was coming apart, and that is what caused the problem. I could pick it off the joints with a tweezers or hemostats. Then I just used thin C/A along all the normal glue joints to re-assemble the front end, with some thinned epoxy brushed along the joints to help out and fuel proof things. I added some balsa triangles here and there where they looked like they might help out. After I was finished, it only added a half ounce to the overall weight of the airplane, including fixing the leading edge of the right wing. There is nothing wrong with the structure or design, the problem is the glue they used. One observation after I made the repair. I had never felt much vibration, really none at all, at the handle when flying the model. After the repair, I could feel the engine running at the handle. Nothing disturbing, just a significant difference. That is how "loose" the front end of the airplane was before the incident, and how solid it was after. I did not alter the engine offset. The model flies well enough as it is and I did not see a need to change anything. Mine had fuselage mounted carbon gear, and you may want to consider fuse mounted gear and install the necessary stuff to do that at this stage. As for beefing up the wing mounts, I didn't have to deal with that, but I would at least try to duplicate the rib sections where the blocks attach to the wing  as a re-enforcement there, at a minimum.
  What engine are you planning on?
   Type at you later,
  Dan McEntee
I have a round 6oz Sullivan tank but not sure if I want to try that out get a 6oz RST. I'm never successful at plumbing uniflow.  I have a ABC ST51 I'm gong to try,  if that sucks I have a ST60 but I think they vibrate a lot so I don't know how well the airplane will hold up. Did you glue the tank cover on for more support? I hate to do that cause I know I'll be plagued with tank problems. What do you mean by duplicate rib sections? Adding more ribs around the landing gear blocks? If you go with fuse mounted landing do you make another plywood bulkhead in front of the wing to mount the gear?

Chris
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Offline Chris Fretz

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Re: Reinforced Score pictures?
« Reply #4 on: December 22, 2017, 07:52:06 AM »
Maybe I better go with the ST60. I see a lot of people saying the 51 isn't enough.
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Offline Chris Fretz

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Re: Reinforced Score pictures?
« Reply #5 on: December 23, 2017, 04:07:44 PM »
  I know I have described my experience with the Score several times, but will cover it again here. My experience began when the engine parted from the rest of the fuselage in flight! It pulled to the right and the prop took a bite out of the right leading edge, The rest of the airplane flopped down in good shape.
   On my airplane, all the hot glue was coming apart, and that is what caused the problem. I could pick it off the joints with a tweezers or hemostats. Then I just used thin C/A along all the normal glue joints to re-assemble the front end, with some thinned epoxy brushed along the joints to help out and fuel proof things. I added some balsa triangles here and there where they looked like they might help out. After I was finished, it only added a half ounce to the overall weight of the airplane, including fixing the leading edge of the right wing. There is nothing wrong with the structure or design, the problem is the glue they used. One observation after I made the repair. I had never felt much vibration, really none at all, at the handle when flying the model. After the repair, I could feel the engine running at the handle. Nothing disturbing, just a significant difference. That is how "loose" the front end of the airplane was before the incident, and how solid it was after. I did not alter the engine offset. The model flies well enough as it is and I did not see a need to change anything. Mine had fuselage mounted carbon gear, and you may want to consider fuse mounted gear and install the necessary stuff to do that at this stage. As for beefing up the wing mounts, I didn't have to deal with that, but I would at least try to duplicate the rib sections where the blocks attach to the wing  as a re-enforcement there, at a minimum.
  What engine are you planning on?
   Type at you later,
  Dan McEntee
Don't be shy... Type at me now S?P
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Offline Bill Heher

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Re: Reinforced Score pictures?
« Reply #6 on: December 25, 2017, 10:58:26 PM »
I knew about the firewall glue issue when I bought an assembled Score cheap. I peeled the hot glue out, CA'd the joints, glued triangle stock firewall to fuse side in the tank compartment. Sealed everything in nose and tank compartment with 2 coats of slow set epoxy.
I cut front 1/2 ribs from 1/8 hard balsa and doubled the ribs supporting wing gear bloks.
Cut vertical grain 1/16 shear webs and tied spats together out to end of gear blocks.
Upgraded controls with same basic hardware you show, elevator adj is a bear,I cut a small access hole on side opposite factory hatch.
My flies fine with a ST .51 w/ tounge muffler and plastic tank on muffler pressure.
Bill Heher
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Offline Chris Fretz

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Re: Reinforced Score pictures?
« Reply #7 on: December 26, 2017, 04:32:19 PM »
I knew about the firewall glue issue when I bought an assembled Score cheap. I peeled the hot glue out, CA'd the joints, glued triangle stock firewall to fuse side in the tank compartment. Sealed everything in nose and tank compartment with 2 coats of slow set epoxy.
I cut front 1/2 ribs from 1/8 hard balsa and doubled the ribs supporting wing gear bloks.
Cut vertical grain 1/16 shear webs and tied spats together out to end of gear blocks.
Upgraded controls with same basic hardware you show, elevator adj is a bear,I cut a small access hole on side opposite factory hatch.
My flies fine with a ST .51 w/ tounge muffler and plastic tank on muffler pressure.
Thanks for the reply. Did you cut out the original shear web and make your half ribs from the spar to the leading edge?

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Offline Chris Fretz

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Re: Reinforced Score pictures?
« Reply #8 on: December 31, 2017, 08:29:12 PM »
I used a monokote heat gun to remove the hot glue.

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Offline Chris Fretz

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Re: Reinforced Score pictures?
« Reply #9 on: December 31, 2017, 08:35:24 PM »
I put a Tom Morris suspended bellcrank in.

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Offline Chris Fretz

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Re: Reinforced Score pictures?
« Reply #10 on: December 31, 2017, 08:39:33 PM »
I used 3/32 plywood and made rib doublers and a shear web. Added a hardwood block to extend the landing gear through.

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Offline Chris Fretz

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Re: Reinforced Score pictures?
« Reply #11 on: December 31, 2017, 08:44:24 PM »
I coated the tank area with thinned epoxy, added a 1/8 plywood to the firewall hopefully to add strength when mounting the R/C style engine mounts.   I added triangular gussets to the corners.

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Offline Chris Fretz

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Re: Reinforced Score pictures?
« Reply #12 on: December 31, 2017, 08:52:05 PM »
I made new landing gear and made it 1in longer. I used 1/8 wire, hope it's not too flimsy.

I'm sure I made this fat pig way heavier than it has to be.

I'm impressed with the fit of this airplane, everything is a snug fit. The covering is pretty bad for sure. My ARF Nobler has far better covering than this one.

The SC-ARF is almost done. The dreaded tank plumbing is next.

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Offline john e. holliday

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Re: Reinforced Score pictures
« Reply #13 on: January 01, 2018, 02:03:31 PM »
She's looking good to this point.   Remember to get some break in time on the engine.   Do a search on here about Shug Emory's Score.   I got to fly John Benders Score after he put the nose back on.   Much better flying plane than I am a pilot.  I know John did well with his even though some people say it might be heavy design.   Happy new year. H^^
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Offline Chris Fretz

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Re: Reinforced Score pictures
« Reply #14 on: January 01, 2018, 02:16:26 PM »
She's looking good to this point.   Remember to get some break in time on the engine.   Do a search on here about Shug Emory's Score.   I got to fly John Benders Score after he put the nose back on.   Much better flying plane than I am a pilot.  I know John did well with his even though some people say it might be heavy design.   Happy new year. H^^
Thanks Doc! I've seen Shugs Score on here and talked to him about it a few times. I need to get a muffler for it and finish the cowl up but other than that it only needs some warm weather! Maybe onto the the SV-11 now...

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Offline Chris Fretz

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Re: Reinforced Score pictures
« Reply #15 on: January 01, 2018, 02:20:41 PM »
Unfortunately it's pretty close to 70oz. It will be interesting to see how it flys.
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Offline john e. holliday

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Re: Reinforced Score pictures
« Reply #16 on: January 02, 2018, 12:50:11 PM »
You may have to fly just a little faster.  My P-63 was a 69 ounce plane that flew decently until I let it get behind me doing the reverse wingover.   H^^
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Offline Dane Martin

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Re: Reinforced Score pictures
« Reply #17 on: January 02, 2018, 02:12:39 PM »
I wouldn't worry about weight so much. There's not much you can do to make an ARF lighter, it's already built. My big ringmaster is 80oz with a K&B 61. I think you'll be just fine.

Offline Chris Fretz

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Re: Reinforced Score pictures
« Reply #18 on: January 02, 2018, 05:01:58 PM »
I wouldn't worry about weight so much. There's not much you can do to make an ARF lighter, it's already built. My big ringmaster is 80oz with a K&B 61. I think you'll be just fine.
Thanks for the positive thoughts Dane! Post a picture of your ringmaster, I'd like to see that big boy!  What size handle did you get from Brent? 3.5in?

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