A buddy and I started last fall with my JKA FW190 and his Zero, We never really got into the real combat till this year we just chased each other around the sky then this year we introduced two newbies who fly together to the spad to the bone website (and don't let the "newbie" part fool you, These guys are naturals for flying) But any how the built one of the slower ones first with LA 40's then built dogfighters with LA40's and gave our JKA planes a run for the $$$ Then they surprised us with a few more dogfighters for us so I put a LA46 I had sitting around on it but I could not be outdone so I built a Dave West Mig7 and put a Magnum 25 I had on it and this thing moves right by them with the LA40 and WOW does it fly well, After seeing it fly the newbie adversaries wanted the plans so I gave them the plans for the mig and the CoroSpit, One of the newbies, Gary is going to be my partner in team combat so he is building himself the Mig and the other Newbie Rick is going to build the CoroSpit to fly with the other pilot that has the Zero (We split it by Futaba vs JR... So we're a competative bunch???) My question is which one is the better plane and why? The Spit or the Mig?? OH and we have 5 Magnum 28's on order for these little monsters too.

Dauntae

The CoroSpit gets my vote because it:
1) Is simpler to build (fewer parts).
2) Dosen't use balsa for the spars (more durable).
3) Better, but not great, scale outline (the "MiG-7" is actually a scaled-up MiG-3).
4) More paint schemes (the real MiG-7 was a 1 of a kind prototype painted dark green over light blue).
5) Hey, its a Spitfire!

JMHO,
D

Hey, if you guys are up on Mass, what are the odds of coming down to the contest in Bloomfield? The .28's wouldn't be legal in 2610, but if you have time to get some .25's instead of the .28s' you'd be all set. The OS or the Webra is much more powerful than the Mag .25. The Mag .28 is legal in the open class of combat, and I've been using them for years.

Btw, if you haven't done the carb work on the Mags, take a look at my website at www.midatlanticcombat.com for some how-to on keeping the Magnum carbs running. Out of the box they work great, but over time, they start to fall apart. The screws back out, and the o-rings leak air causing erratic runs.

Between the two planes, I'd go with the one with more wing area. I agree with Demon about the rest though.

Montague Thanks for the link, Already went there when you posted it for another person and man did I have trouble getting the fuel tubing over the low speed needle but I got it on there, Right now I have the Mag 25 on the mig and even if it's a weaker engine it still moves pretty good. Bloomfield? To be honest right now I think the streamer is the safest thing in the sky but to go and watch might be an idea. Give me some details on it and I'll run it past the guys. It's been a while since the last roadtrip.
Demon the spars are yard sticks, The only balsa used was a former for the turtle deck, I used two HS85 for the ailerons and mounted the elevator servo on the outside instead of the inside. Basically I used whatever servos I had so this plane cost me almost nothing to get in the air, It was just my spare parts and Coro and boy do I wish I built it sooner, If anyone wants the plans I can send it to them. It was a free download but I lost the page I got them from. Here is a pic and I'm going to paint the canopy whenever I get off my lazy butt.

Yeah, getting the tubing over the low speed needle is a pain. I use large diameter tubing, and I streach it open a little with some needle nose plyers. I also make sure the needle is clean by wiping down with something to get any oil off. If it's oily, the tubing just slides off. If it's dry, the tubing will grab, which is what you want. It's a pain, but it works.

I haven't tried this or had time to write it up, but you can also remove the O-rings, then wind some thread in the groove, and put on a touch of CA, then put the o-ring back. That expands the o-ring and gets a better seal.

Btw, the Mag engines all seem to come with 2 head gaskets. You might find more power if you remove one. I do it on my .15's, but haven't gotten arond to it on the .28's and .25's I have.

The original Mike West "MiG-7" plans call for balsa spars. If you've used yardsticks, cool.

One thing that I should have mentioned is the CoroSpit turns tighter due to more wing area and larger wingtips. The very steep taper of the MiG tends to induce tipstalls at high Gs.

Again,
JMHO. [8D]

For info on the Bloomfield contest, look here:
http://www.rcuniverse.com/forum/R%2F...2940868/tm.htm

D

Well I started building a corospit modded to look like a P-40 but half way through I had an idea, So I pulled out the plans for the Mig (OH Demon the plans must have been updated, It does call for yard stick spars) Well anyhow I built a new wing and enlarged the wingtip cord by 1 1/2 " and now has slightly more wing area than the spit but is a slightly thinner wing so speed should not suffer as much, If it works out I'll post the changes, I just love the look of this plane. I plan to test fly it this weekend and I'll let you know how it goes, My brother should have his corospit there to compare the two, Need to get it all tweeked out for the funfly next weekend. Unfortunatly all I had left is yellow coro so I may be building another wing when I get more white, Maybe I'll build another Mig as a backup.

Dauntae

Hey Mont If Mag's are a problem engine why not use Thunder Tiger 25 PRO?

Got me test flight this weekend on the enlarged wingtip cord wing and man what a difference, Will post the changes soon but this thing flies great and no more snapping on high G turns

The TT Prop .25 is pretty much under powered. It's not a worthwhile combat engine at all. The Mag .25 isn't very powerful either. Between the two, I don't know which has more power, but I know the Webra and OS are way above both of them.

Enlarging the tip chord is always good for reducing snapping. However, with a 2610-class plane, you have to make sure the tip chord stays within 10% of the scale chord. If enlarge it too much, you might wind up with a great flying, but illegal plane.

Montague That might be a issue, However someone stated that the wing looks like a P-40 (Strangly what I have been working on) but I have been planning on desighning one for the fun and will scale down from real specs on the real one so this wing might need some small changes to fit but for being new to desighning this has been a great succsesful start for me, It's amazing to me how well coro can fly and a lot of the tips and info I've been finding and using has been from many of your posts. We may be taking a roadtrim to Bloomfield to watch the combat. If you don't mind please send me any info on the specs needed to building a legal 2610

Thank you
Dauntae

I could see the GP bushing TT being down on power ,but the ball bearing PRO TT should be right on par with the OS.

Dauntae,
You can get the full rules on the RCCA site, www.rccombat.com. Look under "start combat". The short version is that the prototype airplane had to have fixed, forward firing guns, and have been built between 1935 - 1955 (though I might have the exact dates wrong, so double check if you aren't doing something close to ww2).

The model has to be 1/12th scale, with any (or all) of the model scaled up or down up to 10%. That means you can scale the wing span and chord up 10%, but leave the fuse alone, or scale the fuse down a bit from 1/12th if you want. (A lot of guys, myself included, don't like this, and think it's the wrong reading of the rules, but the tech committee ruling allows this, so that's how it goes). In theory, the outline can be judged at 15ft, and should be recongnizeable as the correct plane. You should have a 3-view handy in case you are questioned. Though I've never actually seen a plane challenged at a contest. It's common practice to ommit things like radiators and such to make the planes easier to build. You can increase the tip chord to 1/12ths cale +10%, but leave the root chord at 1/12th, though it would look silly. But increasing the tip cord beyond that wouldn't be legal technically.

Colors and markings should be something that the actual airplane could have worn, though modeling a particular example is not required. You can make up squadron or unit markings all you want, but if you pick a plane where every one of them was done in brown an green camo, then you need to paint in brown and green camo (or something close anyway. No one is checking paint chips here). As with the outline, the colors aren't usually juged that closely. Oh, and you can mark the bottom of the plane with non-scale markings to make it easier to see in the sky for safety.

There is a max weight of 2.5lbs dry. Engine has to be .26 or smaller. Muffler can be anything as long as it's shorter than 8". So, no full length tuned pipes, but 1/4 wave pipes like the mousse can or ultrathrust are legal.


Speedster,
You might think the TT Pro would be right up there with the OS. But it's not. Feel free to show up at any contest with a TT powered plane though. I'll have to throttle down to catch you, but that's not a problem .

Seriously, unless TT changed something, that .25 just doesn't have the power. Neither does the Mag .25 or the GMS .25.

For reference, on 15% Omega fuel, my webra .25 will turn a MAS 9x4 prop at 20,500rpm, with nothing tricky done to the engine. I've hit 21k once, and with some powermaster 22.5% fuel (don't ask), I was over 22k. My OS's on the Omega 15% range from 18.5rpm to 20k rpm depending on how much dirt they've eaten. If you want to get a TT, go for it. Get back to us with the numbers. But if you show up at Nats or something and you're the slowest plane out there, don't say you weren't warned.

The engines that are run are mostly the Webra, OS, and Irvine. The Mag .28 is ok in Open, but not legal in the scale classes. The OS is generally the best for someone starting out with combat because it has solid power and is easy to run.

It's important to note that some makes have powerful engines in some sizes but under powered engines in others. The TT Pro .46 is a great engine. The TT Pro .25 isn't. (or, rather, the .25 isn't high powered. I assume it's as reliable as TT engines usually are).

Thanks for the reply Monty. I knew the webra would be a screamer. Just a few of us at our local club thought about combat. Nothing serious , just knock around.

Well, if you are flying your own club rules, then picking an enigine and making that the required engine makes a lot of sense. And in that case, the TT is probibly a great choice. You won't have to worry about anyone spending money on a more powerful engine, and it will keep everyone pretty even, which is a good thing in club combat.