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Clean Sweep 60

Exactly what it says on the tin!

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May 2013 issue preview

May 2013 issue preview

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Chris Stephenson28/04/2015 23:31:41
30 forum posts
25 photos

So, what throws did you wind up with Tim? And what hinge tape?

I'm at the point of just about to do the upper decking. Wing is all done as is the tail, minus this issue with the elevator.

Thanks again

Chris

Tim Hooper29/04/2015 21:45:09
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2857 forum posts
2363 photos

Chris,

I like my models quite lively, so I tend to go for as much throw as possible, and then adjust them in flight with the rate switches on the Tx.

So as a rule of thumb;

Some elevator.

Some more aileron.

Even more rudder.

tim wink 2

Chris Stephenson29/04/2015 23:38:56
30 forum posts
25 photos

I tend to like my planes responsive as well, but not at the cost of smoothness. So I tend to dial in full throw and start with 40% expo...a habit from my heli days, dual rates will kill you there. I'll just start with +/- 6mm then.

Thanks Tim

Chris

Stephen Marr 105/05/2015 11:26:53
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14 forum posts
10 photos

Progress on my cs60 is moving along been lots of planking and sanding in between mother nature running a mock here in Australia. More photos of the progress to follow soon

Cheers

Steve

Chris Stephenson11/05/2015 01:46:05
30 forum posts
25 photos

My model is pretty much to the point of covering now, just finishing up a few details like the lower chin scoop and landing gear wires. I gotta say Tim, this is a brilliant way to make spats. At first I was gonna find some nice pre-made FG units but decided to give your method a try, beautiful results and not tricky at all. A bandsaw and vertical belt sander move wood around quickly, so the whole process took perhaps a hour. For the upper front and turtle deck sheeting, I cut 1/4" strips of 1/16th balsa and my final results turned out nice and uniform. Once done, I painted some thickened epoxy on the inside to strengthen it and voila! Good form, light and strong.

Oddly enough, I decided not to make my own canopy, opting instead to use one on the shelves of Great Planes for some other plane. It was handy, so why not?

I gotta ask Tim, are you a Star Trek fan? As I look at this model, I see a Kingon Bird-of-prey from the original series...must just be that swept forward wing I guess.

Starting to see the light now, anxious for that first flight.

Chris

Tim Hooper11/05/2015 22:09:01
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2857 forum posts
2363 photos

Hiya Chris!

Glad to hear that the CS is coming out as you wanted! I agree on the spats - many seem to regard them as a s ource of grief, but i've never had a problem with balsa ones.

Although I loved Star Trek as a kid, the BoT thing had never struck me. Mind you, I do have a liking for swept-forward wings, so maybe it's subliminal?

tim

img_6691.jpg

Chris Stephenson25/05/2015 04:23:44
30 forum posts
25 photos

I'm at the final stages now should be covering tomorrow.

Another question if I may, is the CG point shown on the plans for the CS60 at the root of the wing along the fuse, or at the tip of the wing like you did with the Speed Twin?

Looking forward to that first flight now, perhaps next weekend.

Thanks again for such an interesting model Tim.

Chris

Tim Hooper25/05/2015 18:19:24
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2857 forum posts
2363 photos

Hiya Chris

The CG shown is where the wing meets the fuselage side.

The reason the CG on the Speedtwin was shown at the tip, is that the Speedtwin was a low winger and so it was easier to balance it at the tips as the dihedral 'lifted' the tips vertically to allow the fuselage to balance as a pendulum.

The Clean Sweep is easier.

tim

Chris Stephenson06/06/2015 19:22:16
30 forum posts
25 photos

First flight today, pics to follow. Tim, I'm curious, did/do you have decalage in your plane? I found I had to add a 1/16" shim just behind the rear horizontal stab mounting screw to get the wing and tail to be leveled the same. Probably I got it a tad off when I glued the vertical into the fuse.

Also, I found I have to slide my battery all the way back to the forward wing mount former for the plane to balance at the CG, and I still had to add 3/4 oz of lead to the tail. The plans and your pics show your battery, which is heavier than mine, several inches forward of where I have to mount mine. I used some thickened epoxy up in the firewall area and floor/battery tray area and probably added weight there. Live and learn I guess, it's strong in any event.

Chris

Chris Stephenson06/06/2015 22:30:47
30 forum posts
25 photos

OK, it's flown. A few minor issues to solve but all in all, it went well. I'll be taking that decalage change I made out. The plane wanted to climb constantly, so much I had to top out my trim. Simple fix, also need to check the balance on my prop/spinner and a couple other small items, but all in all, a nice plane. Thanks again Tim

 

Chris

 

Edited By Chris Stephenson on 06/06/2015 22:43:17

Stephen Marr 107/06/2015 01:04:51
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14 forum posts
10 photos

imag0828.jpg

here's the much awaited updated photo . cheeks have since been added and the fit out has begun hope to be finished and painted by the end of july

Chris Stephenson07/06/2015 18:43:17
30 forum posts
25 photos

front corner.jpgodd duck.jpg

Tim Hooper07/06/2015 21:39:32
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2857 forum posts
2363 photos

Come on ,Stephen - you're getting left behind! wink 2

Chris, that's great news! Your CS looks brilliant in green and yellow. I don't think orientation will be any problem at all! I can't comment on your battery position/ ballast issues; all models are different, and it could be a combination of things (wood density, etc), and as long as it flies smoothly, then you can't be far out with the CG at all.

My own, much flown, CS60 had another two flights today, and performed as well as ever. It was pretty breezy here in Shropshire, and the CS is one of my 'windy day' models. Knife edge, spins, stall turns, inverted passes are all in its repertoire.

tim

Chris Stephenson08/06/2015 02:55:59
30 forum posts
25 photos

Thanks Tim

I had the plane out again today for a couple more flights. I had removed the shim under tail and messed with the CG quite a bit, for a range of maybe 3"! The plane is very insensitive to small CG changes and the stall is very gentle...it just mushes forward. Which is a testament to that very odd looking wing.

I do want to rework my tail hinges, I'm thinking maybe pin-type hinges. The tape for me is just not gonna be a long term thing. I think this is due to the way I ran my linkage up through the tail center-line to just in front of the hinge line rather than underneath the way you did. My linkage pushes directly up or down at the hinge line. I'll get it sorted, I'm inspired now so I'll make it right.

I can see why it's one of your windy day planes Tim. It was somewhat breezy here today as well and the plane hardly noticed it.

Chris

Stephen Marr 108/07/2015 06:35:20
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14 forum posts
10 photos

cs602.jpgall ready for painting

cs60.jpg

Stephen Marr 115/08/2015 07:10:06
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14 forum posts
10 photos

All finished and waiting for good weather for the first flight

img_2698.jpg

Tim Hooper16/08/2015 21:16:20
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2857 forum posts
2363 photos

Looks good with that triple-blade prop and unusual colour scheme!

Good luck!

tim

Stephen Marr 112/09/2015 06:22:18
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14 forum posts
10 photos

Test flight have been done ....... The plane was porpoising on its own accord. General consensus was that it is a bit tail heavy So I will be experimenting with the balance once back from overseas trip

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