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RE: 40% 260 on a Diet
oh good grief, will someone send this guy a picture with a big freaking aow as to where it balances and what is attachd to the plane when it blances at this position.
argh.... there are no horzontal stabs in the plane at this point. as he said, look at the picture and you can see what is there. no hrdware or electronic in tail yet. duh. try www.hookedonphonics.com |
RE: 40% 260 on a Diet
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ORIGINAL: as722 So are you saying that you put the whole airplane together, wings, stabs etc. and it balances at 2.5" behind F-2 or are you saying that your fuse balances at 2.5" behind F-2 ? Albert ORIGINAL: sensei Albert, The recommended C/G is 11.3" behind F2 and this thing balances at 2.5" behind F2 equaling 8.8" in front of the C/G as it sits Ok, there is 1 LB 12 ozs. in tail feathers, servos and hardware at 60" behind the C/G; moving the C/G aft about 8.00" Because of the project target weight and power plant choice, the aft portion of the fuse had to be fabricated very light or the recommended C/G would have been unattainable without led in the nose; killing the target weight in the first place. Remember that 60" arm is very sensitive to the C/G. Bob Albert, At the point of discussion, there were not horizontal stabs on the aircraft, no wings, just rudder and vertical fin (Fuse). The motor, ignition, and throttle servo were installed as well as spinner and prop, cowl, and canopy. See the photo.......... |
RE: 40% 260 on a Diet
No I don't see stabs on that photo but this is what you said. :D
"No, like I said, 2.5" behind F2 where the cowling meets the fuse, also with the 4 servos in the tail and the horizontal stab in place, along with batteries behind the canopy this will be a stroll in the park". I guess I assumed the stabs were in place because you said they were. Albert |
RE: 40% 260 on a Diet
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RE: 40% 260 on a Diet
Can't you find something better to do?
ORIGINAL: as722 No I don't see stabs on that photo but this is what you said. :D "No, like I said, 2.5" behind F2 where the cowling meets the fuse, also with the 4 servos in the tail and the horizontal stab in place, along with batteries behind the canopy this will be a stroll in the park". I guess I assumed the stabs were in place because you said they were. Albert |
RE: 40% 260 on a Diet
An otherwise really interesting thread has moved towards the ridiculous.
Albert, there's no doubt you do great work and have built many Cardens - thus your selection by Dennis to build one of the 300 prototypes - I have nothing but respect for your capabilities. Does this have to be a pis$ing contest? This is pushing the envelope, could work, could fail - I'm keenly interested in the outcome and would love to see the pointless debate removed from the discussion and just sit back and watch the facts unfold. Ok, I'm done. Respectfully, Bob |
RE: 40% 260 on a Diet
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Tonight Bob started on the wings.. Before installing servos rails or cutting anything each foam panel came in at 15.3 oz............. More photos to come as he progresses..
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RE: 40% 260 on a Diet
ORIGINAL: RC_Pattern_Flyer BUT... if it flys great, makes weight, balances where it should, i bet no one has the balls to admit they were wrong. No doubt the aiplane will fly - looking at the pictures we can be sure of that because it looks like good quality work. however, if it flys poorly due to tail twisting and other unmeasurable characteristics - will we get an honest report of it flying poorly? RickP |
RE: 40% 260 on a Diet
Did not ask you the question, I asked bob and bob has answered everyone.
ORIGINAL: bzrogers Can't you find something better to do? ORIGINAL: as722 No I don't see stabs on that photo but this is what you said. :D "No, like I said, 2.5" behind F2 where the cowling meets the fuse, also with the 4 servos in the tail and the horizontal stab in place, along with batteries behind the canopy this will be a stroll in the park". I guess I assumed the stabs were in place because you said they were. Albert |
RE: 40% 260 on a Diet
I've built enough cardens to know that if bob's 260 balanced at 2.5" behind F-2 that he had a problem and this is why I asked him if that was with the wings and stabs on. He answered my question so what's the problem ? Hey at least I've used my real name on all my post ! :D
Albert ORIGINAL: Kaos1964 An otherwise really interesting thread has moved towards the ridiculous. Albert, there's no doubt you do great work and have built many Cardens - thus your selection by Dennis to build one of the 300 prototypes - I have nothing but respect for your capabilities. Does this have to be a pis$ing contest? This is pushing the envelope, could work, could fail - I'm keenly interested in the outcome and would love to see the pointless debate removed from the discussion and just sit back and watch the facts unfold. Ok, I'm done. Respectfully, Bob |
RE: 40% 260 on a Diet
I thought the reference to the CG without stabs and wings was quite brilliant so I thought I'd apply this to my project. I checked the CG balance on some boxes of a kit for my 32% Yak and found they all were 1/2 inch left of center. This mind you was with the packing tape removed and the peanuts still in the box. The cowl box was smack dab in the middle which worked out correctly with a 1/4-20 nut on the opposite side. Had me worried for a bit but I think I'm in the reccomended range. I like this looking down the road approach. Thanks for the tip..T28
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RE: 40% 260 on a Diet
"... I thought the reference to the CG without stabs and wings was quite brilliant so I thought I'd apply this to my project...."
:D :D :D |
RE: 40% 260 on a Diet
This thread is going to make my head explode.
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RE: 40% 260 on a Diet
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Today Bob was able to accomplish a lot on the tail section. After hacking at the elevators half’s and getting the end caps on the horizontal stabs, here are the results.
Each elevator came in at 3.2 oz Total weight of both elevators and both stabs 15.0 oz |
RE: 40% 260 on a Diet
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Rather than use, the supplied L bracket Bob decide to make an end cap that replaced the L bracket.
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RE: 40% 260 on a Diet
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After installing the tail feathers the total weight as it sit is 17 lbs 5.6 oz………..
The CG is currently at 8" aft of F2. |
RE: 40% 260 on a Diet
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We also had gussets made tonight, 1/32 ply cut to 1.5” diameter with 3/8 x 3/4 cut outs on center.
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RE: 40% 260 on a Diet
What is the step by step procedure to join the cowl to make it into a one piece?
Thanks Rob |
RE: 40% 260 on a Diet
1. Trim the lower cowling ship lap to .375"
2. Abrade lower cowling ship lap area with 180 grit abrasive 3. Abrade upper cowling inside interface area 4. Fit cowling together nesting the top cowl to the bottom cowl 5. Use masking tape on outside of cowling as a holding fixture 6. Place side of cowling down on flat surface and run thin C/A into bond line area while applying pressure downwards to the flat surface NOTE: Only bond 2" at a time, while applying pressure spray kicker, repeat until all areas are bonded. 7. Peel tape from the outside of cowling and fill seem with C/A and kicker per the note listed above. 8. Prep for prime fill and topcoat. I hope this helps you. Bob |
RE: 40% 260 on a Diet
I slid both my 32% yak wings unsheeted on the wing tube and lifted the tube in the center. Both wings dropped towards the trailing edge. I'm thinking I'll end up tail heavy. Did you notice this with yours??? Thanks for the great build thread, T28
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RE: 40% 260 on a Diet
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RE: 40% 260 on a Diet
This tread has turned into a total train wreck. First the guy says he going to build a 28 lbs Carden 40% (why with a 100? I don't get it?). Then he says he's relying on the covering to keep the plane together. Then we find out he’s a liar and not who he says and he's not even building the plane himself. Why do we care what 260man says now, he lied once he’ll probably lie about the finished weight.
The only positive thing about this thread is T28pilot. C. G. ing your planes while they’re still in the box is one of the funniest things I have seen on this site in a long time. Thanks T28pilot. Oh by the way my name isn’t T.Bob and I’m not from Indiana, I'm from France. |
RE: 40% 260 on a Diet
ORIGINAL: T. Bob This tread has turned into a total train wreck. First the guy says he going to build a 28 lbs Carden 40% (why with a 100? I don't get it?). Then he says he's relying on the covering to keep the plane together. Then we find out he’s a liar and not who he says and he's not even building the plane himself. Why do we care what 260man says now, he lied once he’ll probably lie about the finished weight. The only positive thing about this thread is T28pilot. C. G. ing your planes while they’re still in the box is one of the funniest things I have seen on this site in a long time. Thanks T28pilot. Oh by the way my name isn’t T.Bob and I’m not from Indiana, I'm from France. Sir, You can call me what you like, you can say what you want, the truth is "you're right and everyone else on this web site is wrong." One thing I have learned in life is, some things are not worth dealing with, and you are one of those things. |
RE: 40% 260 on a Diet
Thanks mate, me lady got that for me. From a company in TX. It’s like saying Austria! Well, then. G'day mate! Let's put another shrimp on the barbie! But hey 260man thanks for the entertainment |
RE: 40% 260 on a Diet
ORIGINAL: as722 No I don't see stabs on that photo but this is what you said. :D "No, like I said, 2.5" behind F2 where the cowling meets the fuse, also with the 4 servos in the tail and the horizontal stab in place, along with batteries behind the canopy this will be a stroll in the park". I guess I assumed the stabs were in place because you said they were. Albert :) P. |
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