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General control line discussion => Open Forum => Topic started by: Randy Powell on September 18, 2009, 01:37:55 PM
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Here are a couple of pictures of Alan Resinger's new Firecracker. Pretty cool.
Currently has a Stalker 61 and weighs ~64 ounces. Very slick. It's a big plane.
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Very Cool!!!!!
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Hey Alan:
Really like the paint job and colors, but its screaming for an orange stripe on the bottom of fuse.
What is the wing span and area on that Cracker ?
Looks like a good candidate for my new 76.
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Allan,
I believe this is smaller than the usual Firecracker. Alan is flying one now with (I think) a Stalker 66 in it. I really like that plane too.
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This is the Mark III version of Brain Eather's Firecracker. Is spans 58.5" and has area of 680 sq in. The Mark I & II versions had about 100 sq in more. This one has a lot more trailing edge forward sweep (2 1/4 " as opposed to 1" ) and a low aspect ratio tail. I changed the rear fuselage shape to retain the old Firecracker look. Brian has already given me heck for not using a wiggley rudder on it. I just never liked it or found it a necessary feature. Power is a low timed Stalker 61. Plan on getting in the air this weekend.
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This is the Mark III version of Brain Eather's Firecracker. Is spans 58.5" and has area of 680 sq in. The Mark I & II versions had about 100 sq in more. This one has a lot more trailing edge forward sweep (2 1/4 " as opposed to 1" ) and a low aspect ratio tail. I changed the rear fuselage shape to retain the old Firecracker look. Brian has already given me heck for not using a wiggley rudder on it. I just never liked it or found it a necessary feature. Power is a low timed Stalker 61. Plan on getting in the air this weekend.
What do you mean by "low timed Stalker", is it modified.
I have a Stalker 61 LT EX in my Chevelle. Is that what the "LT" means or not?
What prop you using on the 61? I'm using a Stalker cf 3-blade 12-6. Still have 2 that I bought many years ago from MODUSA.
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SWEET !
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Allan,
The Stalker 61RE comes in 4 different models. The first 61 available is the heavy case version that is available in two different timing modes. The 4-2-4 version which has a 120/140 sleeve timing and the 2-2 version which has a 110/130 timing. These engines weigh about 355g. The other two Salker 61's are the 61 LT EX and the 61 LS. The first is the one you have which is the 61 LT EX which is the lite case version and the second is the 61 LS which is the Long Stroke. Both these engines use the 120/140 sleeve timing. Both these engines weigh about 320-325 g.
The props I use are Brian Eather's CF 3 blades. I have maybe a half dozen of so with some newer versions that work best with the big Firecracker and the Stalker 66. They are 12.5 X 5.25 - 5.5 with varying amounts of undercamber and Philips entry. Brian has had some additional problems with his shoulders lately and is not making any props for the time being. I'm glad I've got a good selection of props.
Alan
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Very nice model, gorgeous paint scheme.
Thanks for posting it.
L.
"Managers who are skilled communicators may also be good at covering up real
problems." -Chris Argyris, Harvard Business Review
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Allan,
The Stalker 61RE comes in 4 different models. The first 61 available is the heavy case version that is available in two different timing modes. The 4-2-4 version which has a 120/140 sleeve timing and the 2-2 version which has a 110/130 timing. These engines weigh about 355g. The other two Salker 61's are the 61 LT EX and the 61 LS. The first is the one you have which is the 61 LT EX which is the lite case version and the second is the 61 LS which is the Long Stroke. Both these engines use the 120/140 sleeve timing. Both these engines weigh about 320-325 g.
The props I use are Brian Eather's CF 3 blades. I have maybe a half dozen of so with some newer versions that work best with the big Firecracker and the Stalker 66. They are 12.5 X 5.25 - 5.5 with varying amounts of undercamber and Philips entry. Brian has had some additional problems with his shoulders lately and is not making any props for the time being. I'm glad I've got a good selection of props.
Alan
Seems like I read somewhere that the Stalker c/f props have a foam core and because of that they cannot be re-pitched. Do you know if that is true ?
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Alan,
With that much TE sweep, you may regret not having either a wiggly rudder or more side area aft of the CG. But then again, maybe not.
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I love the paint scheme. But, leadouts are on the wrong wingtip for me. DOC Holliday
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Well this morning Alan gave the new plane it's first flights. It was either 5 or 6 flights, I don't really remember for sure , but it was something to behold. Each flight the engine started in one flip , No adjustments of the needle valve where needed or performed. The lap times where real steady at close to 5.7 seconds per lap . The wings seemed perfectly level .The plane held out there very nicely at that slow speed,especially in the overheads .Tank level seemed almost perfect .The engine did a nice 2 - 4 dance the whole time.Alan said it felt so good immediately that he just knew he could do the whole pattern on the first flight.When he put it away to go home he hadn't even adjusted the needle valve. Amazing.It's gotta be a top flying plane.All that's needed is some flights to familiarize with the controls. Keith Varley
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I guess that frees up Alan's old 'Cracker to perform tests with the Stalker .81 he has? ;D Steve
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Steve,
No 81 in the closet, but the performance of the low timed 61 makes me think I'll get another.
Alan
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Alan,
Are you using the .61 RE LS?
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Walter,
I'm using the original heavy case 61 with the 110/130 timing. The early 61's seem to be much smoother runing probably due to the heavier case. Both the LT and the LS use the lighter case and are just about an ounce lighter.
Alan
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Alan,
Be sure to give us a flight report when you get it in the air. I know the other one you've been flying looks just awesome in the pattern.
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Hey Randy,
you really should open a window when you paint,, didnt anybody tell you that dope fumes cause goofy thinking
look up at post 12 my good man,, snicker,, its done been flown!
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Walter,
I'm using the original heavy case 61 with the 110/130 timing. The early 61's seem to be much smoother runing probably due to the heavier case. Both the LT and the LS use the lighter case and are just about an ounce lighter.
Alan
So this is the 2-2 version that Keith reported was doing a real nice 4-2-4 dance..
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Mark,
From Keith. I want to hear what Alan thinks.
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Walter,
I'm using the original heavy case 61 with the 110/130 timing. The early 61's seem to be much smoother runing probably due to the heavier case. Both the LT and the LS use the lighter case and are just about an ounce lighter.
Alan
I still fly my old heavy case 61 RE with the blue head (anodizing was not good in 97). I put a couple head shims in it, put on a bigger venturi gutted the old baffle muffler, and ran some nitro after the second Nats I flew it in. So now it drank two more oz of fuel like a big Tigre, made more power but the nose heavy condition exacerbated wind up and wind performance. At the time, get a bigger engine made sense, thus I piped in. Three Nats and a team trials, the only internal change was clean up ports, and the con rod from the 55RE. Crud had to be cleaned from the head occassionally when I tried to turn it into a castor blaster. Of course, mine hauls around a 63 oz 11 year old pig. Therefore it is a handful in the wind.
Good luck with your bird! Can we have some particulars on this particular Fire Cracker?
I know the Stalker engines I have, had more potential than the airplane I designed for it originally. In hind sight, I probably should have stuck with the engine, and slimmed down my design.
Slick lookin ship! H^^