Official Freewing 70mm Twin Me 262 Thread

[Ron1950]

looks like a few southwest flights I was on lol

[ScottMe262]

I got mine in the air two weeks ago and its amazing.
It needed absolutely zero trim.
It is the later version with the new fans.

I am running a 5000 for the battery and would like to get more time. I generally fly it at what I feel are scale speeds. Throttle is at about 1/2 to 5/8. I have the timer set for 3 minutes and when I land the battery is warm but not hot. My little digital gauge reads typically 20-22% left right then but after the battery cools to room temp its shows 35-40% left.

Do you guys have any idea if there is time left in those batteries or if anyone has tried a bigger one or maybe a dual battery setup mod that gives about 7000?

Thanks

[crxmanpat]

I've been flying mine lately with a RoaringTop 6S 6250 35C. Great power from this pack, and 4 minute flight times with 30% left. I am totally sold on this brand and I have many of them, never an issue with any so far.

[ScottMe262]

Hi Pat,
Is 35c enough for these? I was buying 45-50 because I didn't want to burst into flames. Im pretty new to this and always thought you needed a bunch of C capacity for these EDF jets. Please let me know your thoughts.
Thanks
Scott

[OV10]

Hi Pat,
Is 35c enough for these? I was buying 45-50 because I didn't want to burst into flames. Im pretty new to this and always thought you needed a bunch of C capacity for these EDF jets. Please let me know your thoughts.
Thanks
Scott

Hello Scott and welcome to the Squawk too.
The critical aspect to your question is "how accurate is the C rating". The majority of manufactures/re-labelers quite often inflate the C rating quite a bit.
The capacity that is listed is for the most part on any brand is rather accurate but not so with the C (discharge) rating.
The C rating is designed to allow users to easily calculate the maximum constant current you can draw from the LiPo pack safely without harming the battery.
A 35C rated battery of 4000mAh(4Ah) is capable of 140Ah(35x4). The total ESC's(2)x max rated load(60ea) is 120A so the battery exceeds the system power requirements for the FW 262.
Most users have bought the much higher C rated batteries just because they have experienced poor performance and damaged(puffed, etc) batteries due to the poor rating practices and have compensated as such with batteries that are 2-3 times more C rating than actually needed and this is because the 45-50C battery may really only be capable of 35C.
I turned from the Turnigy Nanopuffs a couple years ago to Admirals and have been pretty satisfied. I don't personally believe they are 100% on C rating but a hellava lot better than others.
Been hearing as of recent some positive vibes about the RT's and that is where Pat should be able to give you his perspective about how they perform.;)
I

[crxmanpat]

I've not found a single manufacturer's C ratings to be anywhere close to what they put on the label. Good for a 10-second burst? Maybe. But I run packs that can put out enough sustained energy for the power system in use. For example, my RT 6250 35C tests out at 20C true sustained, which equals 130 amps. This means it can run 130 amps for the entire flight without harming the battery. For RoaringTops, I never buy more than the 35C packs, and I use these almost exclusively in all my Freewing jets. The packs come down barely warm, and in over a year of flying them, I've never had one puff or go bad in any way.

Want to know the true C rating of your lipos? I've found this tool to be extremely handy.

https://hobbyking.com/en_us/wayne-giles-designed-universal-esr-meter-for-100-10000mah-1-6-cell-lipo.html

[OV10]

And for those not too jazzed with HK, it is also avail @ Progressive RC
Here's a little RCG blog " Project to expose C rating deceit " with input from Wayne Giles himself.

[crxmanpat]

Yep, Progressive sells them as well. Thanks for posting that link Charlie!

[ScottMe262]

Excellent info guys. Thanks for schooling me on that. Now I can sort it out.

"Nanopuff". That's the perfect name for them. All the turnigy nanotech 4s 2200 have puffed after flying about five times each at 5/8 throttle in my FMS Stuka. the admiral 2200's on the other hand have endured the same flying in the same aircraft and still have sharp edges with no puffing at all.

Thanks again.
Scott

[MANFRED]

Few shots of my new 262

[TiredIronGRB]

Gorgeous!

[Alpha]

Another artist on Hobby Squawk... stunning repaint!

[OV10]

Another artist on Hobby Squawk... stunning repaint!

What Alpha said :Cool:

[MANFRED]

Thanks Men!

[lpcustom73]

I purchased a new Me-262 Nose gear retract unit, and when I installed the unit, it is reverse to the main retracts. How can I fix this?

[fhhuber]

Some of these retracts are a bit nuts... so try this it might actually work:

with nose-gear down, unplug from the Y to the other gear.
Operate the mins to get them down.
Plug in the nose-gear.
Now cycle the gear twice. (just once might hide that it didn't work)


**************


If that fails then you have to go to a reverser of some sort. There are reversing Y harnesses with one servo gets reversed and the other does not. Or use a second channel for the backward gear and mix it reversed to the mains. (which means you need a spare channel to do it)

Someone who is really good at soldering could get inside the retract and rewire it to operate in reverse to what its set up for. That is a pure desperate to make it work plan. You have to reverse the wires to the motor and the wires for the position sensing. (no picture at this time to show what to rewire) This is what we had to do in the 1970's to get a reverse direction servo. We rewired them.

[Aros]

I've also had success re-binding when gear is out of synch. It doesn't always work but it has for me a few times over the years.

[mr.frankenjet]

Few shots of my new 262

sweet looking , very nice

[James]

NEw pics of the new livery that is coming soon. More info also coming soon

[ScottMe262]

Ok, last night I decided to mod my Me262 and fit two 6s 5000's in it. I'm just not happy with 3 1/2 minutes of flight time. I really wanted to get about 6 minutes.

I removed the pilot and cut a slot on the wall separating the cockpit and the battery compartment. The second battery slides into that slot and I will eventually be able to put 1/2 of the pilot back in. if this works

It balances out to the same cg but of course is 750 grams heavier.

Anybody have an opinion on if this thing is going to get off the ground and/or become a hole in the ground?
also, if dragging the extra weight will negate the extra capacity and still be a short flight.

Opinions wanted. Thanks
Scott