| Build Thread, Page :
1 2 3 4 [ 5 ] 6 7 8 9 10 11 (222 posts, 20 posts per page, 12 pages in total)
|
[ < Prev ] [ Next > ] |
| SteveM, Image # 9708 | 30 Oct 08 15:56 |
My propeller conundrum - I need a scale prop by the end of the day and have only this 10" prop that can be cut down or I can try to carve something decent in the next few hours. All reasonable suggestions are welcome. |
| SteveM, Comment for image # 9689 | 28 Oct 08 13:33 |
| While working on the wing I decided to sight down the TE and saw that while the left side was straight, the right side had a turn downwards at the inboard end of the aileron. A little work with the iron and I was able to get it flat again. It is possible that this caused the tendency for the plane to have good roll to the right and not to the left, but it seems to me like it would actually have the opposite effect. |
| SteveM, Image # 9689 | 28 Oct 08 13:28 |
I also repaired the wing bolt hole by adding a paper tube like is used on the MM Hellcat. I had intended to do this from the start, but got ahead of myself when covering the wing. |
| SteveM, Image # 9688 | 28 Oct 08 13:26 |
My simple fix; an epoxy and plywood sandwich. Tape was used to keep the epoxy from leaking out the bottom while a clamp help the sandwich till the epoxy set up. While not what I would do if I was still in the building phase, I think it will do the trick. |
| SteveM, Comment for image # 9682 | 28 Oct 08 13:22 |
| Those are both good ideas and I will try to incorporate parts of them into my next build. But for now I had to find a solution that was minimally invasive since the wing was covered, the following picture will show my fix. |
| bbaumer, Comment for image # 9682 | 28 Oct 08 11:45 |
| I'd suggest a small block of basswood, grooved and drilled to accept the wire. Let the block span fully between ribs, and add some 1/4" tri-stock to brace the ends against the ribs.
Be aware though, if you get a solid anchor condition for the wire, a rough landing now destroys the entire wing. |
| hjlittman, Comment for image # 9682 | 27 Oct 08 18:59 |
| The plywood is probably strong enough as long as it didn't get broken in the hard landing. if you decide to sandwich the gear between the spar and another piece of plywood you might try drilling a hole on either side of the gear leg for small bolts to keep the sandwich clamped tight under the landing loads. |
| SteveM, Comment for image # 9682 | 27 Oct 08 17:07 |
| I neglected to mention it, but I found the vinyl spar was very squishy and I wondered at Guillow's claim that it was superior to plywood. I cut my own spar from 1/16" plywood and found it actually weighed a little less than the vinyl spar. So ultimately I went with plywood because of lower weight, perceived strength, and a wood-wood joint that I could use PVA glue on. Maybe some day I'll have to use the vinyl and see how it stands up. |
| hjlittman, Comment for image # 9682 | 27 Oct 08 15:53 |
| I think that all the above suggestions apply. Also, that vinyl spar supplied in the kit is very strong and not that heavy. I put it in my BF-109 just for the strength even though it will be flown "gear up". |
| jgood, Comment for image # 9682 | 27 Oct 08 13:26 |
| Ah, yes, good point about putting it on the other side of the spar... |
| SteveM, Comment for image # 9682 | 27 Oct 08 12:22 |
| Yes, more thread around the vertical portions would have helped. I was just looking at the Guillow's directions and confirmed that I did put in the main spar backwards. If installed correctly the gear wires would tend to try to rotate into the plywood spar rather than away from it, which is a much stronger joint. |
| jgood, Comment for image # 9682 | 27 Oct 08 07:05 |
| A sandwich sounds good Steve. Also, maybe some of that thread could have gone around the vertical part of the wire. |
| SteveM, Comment for image # 9670 | 27 Oct 08 01:02 |
| Thanks James, hopefully it will look even better when done. Damage to LG was minor as you mentioned on the other picture, I have posted another picture showing why they broke loose so easily. I also would have preferred an ROG but I only have till Friday and had to press my luck. |
| SteveM, Image # 9682 | 27 Oct 08 00:57 |
Close up view from the rear of the landing gear wire. There was little to prevent the wires from rotating, maybe I was supposed to put the wires on the other side of the spar. I think the best fix is to sandwich with plywood. |
| jgood, Comment for image # 9670 | 26 Oct 08 23:36 |
| Hand launching always makes me nervous for maiden flights. I prefer the feel of a ROG takeoff. The P-51 looks great, BTW. |
| jgood, Comment for image # 9671 | 26 Oct 08 23:34 |
| Not too much damage though, that's good.
|
| SteveM, Comment for image # 9672 | 26 Oct 08 17:44 |
| It was difficult to fully evaluate the flying characteristics of the plane in such a small area, but I believe once I figure out why I seemed to have lots of right roll and no left roll that I can proceed with adding the scale details. Hopefully this Friday the weather will cooperate and I can fly it at the RC field in its finished form and have someone to snap some pictures for me. |
| SteveM, Image # 9672 | 26 Oct 08 17:38 |
On later tries I was able to pull up in time, but the field was so small I was constantly turning to avoid the trees. It seems like it wanted to roll right and left aileron would hardly turn/roll it left at all, I'll have to make sure the wing is level. |
| SteveM, Image # 9671 | 26 Oct 08 17:35 |
I have never hand launched so I was a little slow in getting on the elevator and she smacked into the ground before I could pull up. The force of the "landing" was enough to knock the landing gear wire loose so I'll have to rework them. |
| SteveM, Image # 9670 | 26 Oct 08 17:33 |
Here we are at the soccer field sized area ringed with maple trees. There is no hard surface for ROG so I have to hand launch and just try to land level on the grass. |
| Build Thread, Page :
1 2 3 4 [ 5 ] 6 7 8 9 10 11 (222 posts, 20 posts per page, 12 pages in total)
|
[ < Prev ] [ Next > ] |
