RE: RedWing MX2 Build
 

Ditto on that one, In my time in this hobby I've found some of the less expensive stuff to be every bit as reliable as the top dollar brands, some even better. I'm all about having fun while saving a couple bucks in the process and so far I've accomplished my goal with a few bumps along the way. Don't get me wrong, Some things I have are name brand, but not all.

I didn't look at the exceed motors, I'll have to slide over and check them out. They look to be the same as some of the turnigy motors with different color anodizing, but Icould be wrong.

RE: RedWing MX2 Build
 

It's sad to say of today's marketplace but the truth is that you get what you pay for. The Chinese clones are very inexpensive indeed and in many cases they are adequate enough to do their intended job, though in most cases they will not live up to their expected performance or lifetime. Worse than that their warranties most of the time run from very poor to nonexistent. My experience with E-power is limited to a couple of Hotliner sailships and honestly I don't have any experience with the Chinese clones. I do have plenty of experience with glow and gas engines and in my opinion there are very few Chinese clones that live up to my expectations.

Friends of mine which have deal with Hobby King as an example; have been left with a very sour taste in their mouths when attempting to have service or warranty support on Turnigy products. On the other hand I have owned several Evolution gas engines and when I required service and maintenance it have been quick, efficient and very inexpensive and we are talking here of a product built in the Czech Republic. That right there in my opinion pays off for the large initial investment cost.

I do agree that most quality R/C products are most time overpriced but in the end you will get more enjoyment and less downtime and aggravations when purchasing the better quality stuff. In any case I am very interested to know how your experiments turn out since I believe the MX platform will be an excellent one for E-power applications. Please keep on posting on your build for all those interested on this aspect of the hobby.

RE: RedWing MX2 Build
 

I believe the saying "you get what you pay for" is kinda flawed. Sure some of the cheap knockoff products are bad and I have had my share of bad apples, but I have had plenty of good experiences too. I can buy 5 of the infinite motors I have for the price of that one himax, is that motor going to last as long as 5 of the infinites? No way in hell. There have been local guys flying the motor for over a year without issue. The warranty service with Hobbyking is crappy, I'll say that but at the price you obviously aren't paying for customer service. So far I have been very happy with OK hobby (who sells the infinites). they reply fairly quickly to every inquiry and is now offering free parts because the motor is taking longer than expected to come in.


I've heard of just as many Hacker and Scorpion and Morolfly motors failing hard as these infinites and exceeds etc. And they are cheap enough to replace easily if they fail.

RE: RedWing MX2 Build
 

yeah, in america the "You get what you pay for" saying really held on a high pedestal... I've seen it so many times in the rc world its not even funny. lets not even get into DLE engines, the same ones that tons of people are running on there 1000+ planes, that are hundreds of dollars less than the competition, and pretty much hangs in or out performs them pound for pound.  <div> </div><div>I believe if you go by that creed and that creed alone you will miss out on a lot of great things, and hard earned cash will disappear for a name.  Some of the best things in life or free, or close to it! LOL...</div>

RE: RedWing MX2 Build
 

I do agree with you guys in that are many exceptional products at a decent price out there, and the DLE's are a case in point. It may be my personal pet peeve but if I can afford it I always buy the best performing products. I too have been bitten more than once by trying to save a few coins. And the reason I have bough into the Himax motors is the one can obtain Plattenberg class performance at half the cost, and to me that's a bargain.

In any case I am open minded and will try a new product if someone proves me a cheaper product will do the trick I will give it a chance.

RE: RedWing MX2 Build
 

Fair enough! Hopefully my motor wll be shipped out here soon so I can get this thing done. Then all that is left is to renew my ama and club memberships and go fly

RE: RedWing MX2 Build
 

Please post more photos of your installation I will like to know what will be best load distribution in order to get the required CG. By the way and just out of curiosity: Do you think it may be possible to use to 10S packs in parallel and properly balance the MX?

RE: RedWing MX2 Build
 

I think it depends on how heavy the 10S packs are, what size in Mah?

RE: RedWing MX2 Build
 

It will balance no problem with 4k 10s packs. These are very similar to the slipstream mx2 planes and people have run that setup in those planes

RE: RedWing MX2 Build
 

do you all mean 10S packs, or  2 x 5s packs in series?

RE: RedWing MX2 Build
 

2 5s in series, sorry. With my 2 4s packs I will pretty much have them all the way forward to obtain proper cg with dual elevator servos

RE: RedWing MX2 Build
 

That's what I figured, two 10s packs in parallel would have to have a pretty low mah, you can still do it with them but your adding a ton of extra weight. What kind of flight times do you think I'd get by going with 4k packs?
<div></div><div>I'm thinking the two 5k packs I will be using will be about the same weight as my plane now. I've been following a thread with a guy who built one of these with a scorpion motor on 8s and now he is putting 10s in his, I'll post a link.</div><div></div><div>http://www.rcgroups.com/forums/showthread.php?t=1291176</div>

RE: RedWing MX2 Build
 

With 4k lipo's if you have an external rx pack and keep the wattage to 2200-2300 or so you should easily see 8-10 minute flights since the amp draw will be low. I expect to be seeing 8 minute flights even with 4s 4k packs.

10s is nice but its not needed IMO. A good 300kv motor with 8s is Plenty of motor for these planes. I am also surprised he was running a prop with such high pitch, and also surpirsed the wattage he was getting was so low. Granted he had a 225kv motor which is optimized for 10s use and using a 22 inch prop wasn't the best idea, ends up being way too torque for such a light airframe, I bet it torque rolled nice though :)

I expect to be in the 2100 range with my motor on 10s and a 20x10 prop. Which will be plenty for me seeing as I am not much of a 3d pilot anyways (even if I was this is still over 200 watts per pound)

RE: RedWing MX2 Build
 

You are right, thank you for the correction. I can see now how two 10s packs would be too much weight. I was very impressed with BingWing build on RC Groups. Looks like the Scorpion motor he is using is a less expensive alternative and it looks of good quality. I visited the Scorpion web site but I could not found any mention of the 5505-225KV motor. I think there must be typo here maybe he meant 5525-225KV which Innov8tive Designs sells (and BTW this is a $209 motor). I believe the 55 refers to the stator diameter and the 25 to the stator thickness. [link=http://www.innov8tivedesigns.com/product_info.php?cPath=21_25_85&products_id=550]CLICK HERE[/link]

In any case I have a a Castle Creations PHOENIX ICE 100 sitting idle and I calculated (correct me if I am wrong) this motor at 37V will consume about 80Amps producing 2400 watts. My question are: Will a 20x15 to 21x14 prop be good enough to produce this kind of power? Will the Ice 100 be able to handle 37v? I am thinking on going electric with the 25% Sukhoi that Tim is working on to release soon and I am trying to make a good decision on what components to purchase. The Sukhoi should be very similar to the MX2 and it is a scale design I like a lot.

RE: RedWing MX2 Build
 

Scorpion motors aren't exactly a "low cost" option but they are pretty much bulletproof. If you were going to run the 225 on 10s, I'd stick with a 19x8 prop (or maybe a 18x10). The very largest I would try is a 20x10. You would be pushing that motor extremely hard with anything bigger. You should easily get 2300-2400 watts with a 19 or 20 inch prop on 10s.

And btw, the ice series is not rated to 10s, only up to 8s. The ice hv is good to 12s

And your math is right.

RE: RedWing MX2 Build
 

Whats a good watt/lb for 3d.  I'm talking at least matching the dle 30cc or Jc 28 in power.

RE: RedWing MX2 Build
 

Just to give you an idea

On 8s my motor has tested at 2100 watts- 70ish amps max (xoar 20x10e). 250kv motor. 8s and 250kv yields 7400rpm

the scorpion 225kv on 10s yields 8325 rpm.

So that tells you with the same 20x10e prop you will be seeing significantly more wattage with that scorpion 10s setup. I'd look into a 19x8 or 19x10 to start off with.


And TJ, anything around the 200 watts/lb range will match a dle30/jc28. 220-230 if you want ridiculous over the top power. So 2000-2200 watts is the perfect range. If you want to experiment with power, I'd go with a 225-250kv motor on 10s and start small on the prop and build up until you are happy with the power.

RE: RedWing MX2 Build
 

Anyone here having difficulty getting in contact with Redwing Rc?

RE: RedWing MX2 Build
 

I think I might order a exceed monsterpower 110 to use until the Infinite gets here. Heck I might end up keeping it as it will produce quite a bit more power being a 300kv motor.

RE: RedWing MX2 Build
 

I just found out myself about the Ice 100 only being for 8S. I just ran some calculations using SLOUGH RCMC calculator and the best I get from the 5525-250 running a 19X10 APC-E prop is 1850W (Prop Power) at 6300RPMs using an 8S pack. To get 2400W one needs to go to 10S.

RE: RedWing MX2 Build
 

If you go to a 20x10 xoar e prop you should see almost 2100 watts on a good set of 4s packs. And as light as these planes are nowadays, 2100 watts is plenty for 3d flight. You should have no problem getting the plane in at around 9.5-10 pounds.

RE: RedWing MX2 Build
 

Hey zachfeen, what's this 300KV motor you refer to.

RE: RedWing MX2 Build
 

right here, its a cheapie but they work well http://www.hobbypartz.com/mo1102brmo.html . This would just hold me over until I can get something a bit nicer/more efficient


If you are looking for a quality motor to run on 8s, Motrolfly has a very nice offering. Its the dm4325-310 here on the bottom of this page. http://www.subsonicplanes.com/Motrolfly_Motors.html

RE: RedWing MX2 Build
 

In fact I just bit the bullet and ordered a Motrolfly. I know this goes against my budget statement but who knows when my infinite will be shipped (been waiting 2 months already). I should be getting a cool 2200-2300 on a 20x10 prop. Will certainly throw the plane around like a rag doll

RE: RedWing MX2 Build
 

What's up?
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