ME-109 Combat Project in Connecticut - Page 2 - RC Groups
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Dec 08, 2012, 02:35 PM
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RDIII's Avatar

looks like the kit from a RCgroups member might be cheaper/more reliable
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Jan 14, 2013, 01:45 AM
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Nodd's Avatar
Well the ME 109s are still going strong after lots of abuse. Here's one of our recent combat bouts & yes it was really foggy...

Nodd RC - 034 - Fog Fighters (5 min 24 sec)
Jan 16, 2013, 05:16 AM
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这个也很好啊,very good!
Originally Posted by RDIII

looks like the kit from a RCgroups member might be cheaper/more reliable
Jan 16, 2013, 05:23 AM
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Feb 11, 2013, 07:15 PM
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You should check out as they have the same plane, but in green. Its made by Tech One and they also have a P51. Kit price is $33.95 for the BF109 and $34.95 for the P51. I have the BF 109 and it fly's great.
Feb 12, 2013, 11:05 AM
Redacted per NSA "suggestion"
dedStik's Avatar
Apr 03, 2013, 05:22 PM
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I'm building a HK 109 now and nearly finished. Yesterday I put the motor on the mount. I noticed it is angled to starboard. Is this the norm on your 109s or could this be the cause of difference in flying characteristics between your planes??

Ron P
Apr 03, 2013, 08:51 PM
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Nodd's Avatar
A little right thrust is normal. It helps counter the motor's torque & the propeller's p factor that if left unchecked will cause a plane to turn to the left.
Apr 03, 2013, 09:00 PM
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Thanks for the advice - I'll toss it in air the with more confidence

Ron P
Apr 04, 2013, 01:10 PM
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Nodd's Avatar
Here's a few mods we found helpful for the HobbyKing 109...

Nose weight
The 109 has proved unstable when the CG is further back. Many of us have moved the battery forward & added weight to the nose. The recommended CG is 55-63mm from the root LE (balanced inverted). Most of us are running ours closer to the 55mm end of that range.

There's no need for the supplied aileron control arm extension. You can achieve the required throws using the regular control arm that comes with a 9g servo. We found the extension arm only serves to overload & stall the aileron servo.

Spend some time working-in the aileron hinge line to further reduce the load on the servo. Scoring the hinge with a sharp knife helps but note this also weakens it quite a bit. When it fails & it will, repairs with Welder glue produces a superior hinge anyway.

We've also played around with mounting the aileron control horns in closer to the fuselage. This lessens the diagonal load on the servo but possibly reduces the mechanical differential the stock position introduces.

Easy on the Elevator
You maybe tempted to dial in lots of elevator but excessive throw causes the h-stab to stall. This generally results in a death spiral-o-doom. Tight loops & high-g turns are not this plane's strong points.

Weak Tail
many of us have had the tail brake off during those not so perfect landings. Not sure why HK opted to end the carbon-fiber fuselage reinforcement where they did but that's exactly where the tail snaps off. We added additional CF back there & no one has lost a tail since.

We're using the Turnigy LD2816A 1350kv motor. After some experimenting we've concluded an 8 x 6 prop seems to give the best performance. APC's 8 x 6 Slo-Flyer works nicely.

The 109 comes with a rather odd inverted airfoil at the wing-tips. It almost looks like the wing is on upside-down The root airfoil is more traditional however. This blended foil along the wing is likely an attempt to reduce tip-stalling but to be honest, it's not very effective. Some of our club members have experimented with adding real washout to the wing. Basically twisting the wing while applying heat with a heat-gun (yeah, try not to melt your wing).

Floppy Wings
Although the 109 comes with what appears to be a carbon-fiber wing-spar, it performs as if it's plastic. You'll notice lots of wing-flex when pulling a few G-s. A couple of us beefed up the wing with proper CF spars & that resulted in a much stiffer wing. Does this make it fly any better? That's a matter for debate.

Combat Streamer
Although the result has been somewhat inconclusive, most of us attach our combat streamers to the underside of the wing rather than the tail. The theory here is with the streamer attached near the CG this frees up the tail so it can pitch & yaw without interference from the streamer. Sounds good on paper, in practice it's hard to say if it's any better. Some have even argued that the streamer on the tail actually provides a stabilizing effect *shrug*.

Anyway those are a few things we've come up with. Hope that helps.
Apr 06, 2013, 06:24 PM
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....... well I tossed her in air the with more confidence today as I stated I would a few days ago. She left me hand and took off in in slight steady climb. Looking good. About 100 yds out I gave it right aileron. She came around into a slight dive.

...... took her home in 3 pieces. Split the wing in 2 and broke the prop. Gluing her up now and will toss her into the air with a little less confidence tomorrow.

Ron P
Apr 29, 2013, 07:42 PM
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..... well It.... flies!!

It took several crashes and some hot glue but it flies and flies nice. I like it. i think I had it under propped. Thanks for the advice
Apr 29, 2013, 09:43 PM
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Good to hear. We're still flying ours even though they're all pretty beat-up after many months of combat. I don't think anyone has busted one up so badly it couldn't be repaired though.

Have fun with yours.
Oct 21, 2014, 11:13 AM
lgs's Avatar
I am currently building my ME 109 just for sport flying. I have two motors on hand.

T-Motor AS2208-15 kv1260 with 20amp esc

Turnigy D2826/10 kv1400 with 30A

I intend to use 3S 1400

Which should I use?

also, seems like all the flex in the wings will conflict with the ailerons. Should I beef up the wing with the first build?
Oct 21, 2014, 12:50 PM
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Hey Larry. As stated earlier in this thread the wings could stand some re-reinforcement.

Your Turnigy is too big in my opinion. The T-motor would be the better choice. We found ours somewhat under powered using the recommended Turnigy LD2816A 1350kv so a little extra motor might be fun. We also ended up adding nose weight which means your T-Motor might balance her at 55mm without adding any extra weight. Here's the motor we used compared to yours...

Turnigy LD2816A 1350kv
weight: 26g
ESC: 18a

T-Motor AS2208 1260kv
weight: 38g
ESC: 20a

Turnigy D2826-10 1400kv
weight: 50g
ESC 40a

We used a 1000mAh 3S which would provide around 5 minutes of WOT combat flight. With your larger motor a 1400 should give you similar times. Let us know how things work out.

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