RunRyder - MX 450 really cheap

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e-Ark X-400 - MX400 > MX 450 really cheap

binkyandbrain
Heliman
Location: cosby TN unitedstates

You can't beat the deal anywhere,and they fly pretty good too.It's just to good to pass up.I put align 325 blades,CC 35,with the 430L 3550 motor on mine and this thing is like a rocket.

11-20-2007 11:08 PM

copperclad
Elite Veteran
Location: ..

hi binkyandbrain
i set mine up stock , futaba s3107 servos , CC P-35 JGF 450TH and the motor power is great , runs nice and cool , and the machine was very smooth , but after a couple of days i realized it was a bit too docile , so i remembered SLC saying he used TREX flybar and paddles , so i changed out the stock flybar and paddles and it was better
when i built the machine i followed the manual on servo arms and when i finished i had a pitch range of -4 ~ +8 , which is a good place to start for sport flying , and after i changed out the flybar i thought maybe i should open up the pitch range a bit too ( not so much for increased pitch , but increased cyclic ), so i went to the longer futaba arms ( it would work out to about two holes out from the stock arms ), and i was carefull to find the center of the swashes throw ( 0 degree pitch , and i was able to get -10 ~ +10 , now i'm not a 3D flier so i used my pitch curve to limit back to -5 ~ +9 , and although this seems like i am almost back to stock what it did do was it increased my cyclic throws so the MX is much more responsive than it was , i am waiting for a sunny day and i will take a bunch of photos and start a new thread on the setup

one other thing i noticed while i was working on it today , the fiber glass blades have a brass insert for the blade grip bolt to pass through , and on my set the inserts were sticking out of one side of the blade about .020 or .030" , it was this way with both blades and i think it was effecting the tracking , the bushing seems to be a press fit and it took a small center punch and a few light taps with a small hammer to drive it in flush , might have just been like this with my kit only , but something to check , after building , flying , and working on the machine for a couple of weeks , i still haven't found any "gotcha" on why it is going for $149.95 , dana

11-21-2007 12:34 AM

GMPCOBRA
Heliman
Location: PORTLAND OR.

I JUST GOT ONE

Hay guys i just got my mx450. i purchased it off ebay for 129.00. couldnt believe the price so i couldnt pass it up as the lhs here is still sticking to 249.00. what motor servos and gyro should i use for it. i am just learning to fly again after 15 years of no r/c activity its like starting all over again. i baught a dx7 but with standard servos so i need to know what is best or should i use the futaba servos recomended. thanks for all the help
cobra

11-21-2007 04:04 AM

copperclad
Elite Veteran
Location: ..

hi GMPCOBRA
good work , you got a great deal for $130.00

, i would say just stick with the recommended servos , futaba S3107 , they are only around $17.00 a pop , and you can get a HD gyro for around $60.00 that seems to work well , http://www.helidirect.com/product_i...roducts_id=1506

i think the stock setup would be perfect for getting back into helis as it is very docile and stable , i ran a Castle Creations P-35 ESC and a JGF 450TH http://www.justgofly.com/tech_450TH.htm

with your DX7 you should have a super nice setup , keep us posted

11-21-2007 12:07 PM

GMPCOBRA
Heliman
Location: PORTLAND OR.

hi cooperclad thanks for the info i will check those sights out.
i have several helis now but am a little reluctant to put a nitro heli in the air with out learning to hover first due to the price and avalibility of parts here. so the mx seemed a good choice i have a 400 also that i crashed last week. not having all the parts needed to repair it i was brousing on ebay and found the 450. the reson i crashed the 400 was it was way to sensitive and not set up properly for learning. well that and inexpieriance. i had 2 futaba 8u radios but have been having some issues with them so i baught the dx7. most of the heli flyers here are using them anyway and i can get some help with the setup from them if needed.
itf funny that i paid more for my 400 pro than the 450. but then again it did not come with any electronics. i just cant see buying a trex 450 due to the price even if the parts are cheaper the price of the kit for a long time was more than i paid for my 600n kit but thats not really comparing apples to apples is it lol.
anyway thank you for your help and have a great holliday
chris

11-21-2007 05:21 PM

copperclad
Elite Veteran
Location: ..

hi chris
a lot of the smaller electrics are set up to be very quick , and need to be tuned down to learn on , the mx450 seems to be the other way , it is very docile and will need to be tuned up if you want a responsive machine , i like to see them fly very stable at first and then work on bringing the handling up to where i want it , i am always very cautious with a new machine

the MX comes stock with heavy paddles and the recommended servo throws are on the short side , this makes it very nice to fly at first , the other great thing you will like is your DX7 , small electrics with an FM system can be very frustrating with radio glitching , and you will bypass all that with the DX7

i think you will be happy with your new machine , dana

11-21-2007 05:31 PM

SLC
Senior Heliman
Location: Johnson City, Tn

kewl

If I made a battery try that nice I wouldn't want the canopy covering it either. Looks awesome Copperclad.

11-22-2007 02:22 AM

copperclad
Elite Veteran
Location: ..

hi SLC
thanks , truth is the canopy wouldn't fit as stock

, i think my tray was a bit too forward

, and a radical trim was the only option , i had to poke new mounting holes in it about a half inch above the stock holes , so the back is down about a half inch , and as i remember the nose is higher than stock because of the tray , so i think the top is layed out flatter than heli-max intended

11-22-2007 02:32 AM

GMPCOBRA
Heliman
Location: PORTLAND OR.

hay dana

with your battery tray whitch looks great by the way. did that change the ballance poiny and the center of gravity much. as the stock battery location is much lower and slightly back. i guess what i am asking is what the advantages are of mounting it like this. i know the t-rex machunes are mountes similar to yours. by the way the canopi looks cool like that. well i think i got my 400 back together and all i need is to ballance the blades and check my angles. then set up the dual rates on my radio to soften the controols on the cyclic. that and practis on the sim some more lol.
.
any way to all of you have a great thanks giving.
chris

11-22-2007 06:39 PM

binkyandbrain
Heliman
Location: cosby TN unitedstates

put the TRex flybar and paddles on today with no weights and wow this thing come alive.It really makes a difference if you want to roll faster.

11-22-2007 11:01 PM

binkyandbrain
Heliman
Location: cosby TN unitedstates

Sorry about the crappy pictures not that good with this camera.

11-22-2007 11:03 PM

SLC
Senior Heliman
Location: Johnson City, Tn

rolling and fliping

I use a Futaba 7c on my Mx-450. I will say that after almost 3 years of messing with electic heli's I don't fully understand all the functions on my 7c.
This how I got my MX-450 and my T-rex to fly close to the way the Real Flight G3.5 models fly.
Light weight paddles are the single most effective upgrade you can do to increase you response and cheapest .(no weights)
Increasing head speed will speed rolling and flipping rate

Radio settings. I'm not saying this is the correct thing to do I'm saying it works.
DR- duel rates. Find your DR setting on your radio and make the second setting 125% on ailron and elevator making sure the 125% is with the switch in the same position for elev and ail.Now you can switch from 100% to 125%.(125% can be raised or lowered according to your setup}
Now making sure your motor connections are unhooked for safety. You can see how this will help your heli roll and flip faster by flipping your switch DR is bound to. You will see your swash move farther to the right if you are holding your stick that rolls your heli to the right all the way to the right,or pushing the stick all the way forward with the switch at 100% then hit the switch to 125% you will see the swash move farther forward.
You will have to make sure the swash does not drag the frame of the heli when at at max neg pitch or hit anything up top at max pos pitch.BE AWARE that your servos only have so much travel and you can set you radio past the range your servos can travel.

11-23-2007 02:23 AM

copperclad
Elite Veteran
Location: ..

hi GMPCOBRA
i am running a 1350mah 20C battery and it just didn't have the weight to balance the machine , i ran a 4" piece of paint stick , zip-tied to the stock battery tray to extend the battery forward , for a few days to be sure i liked the CG it was giving me and see that the battery wasen't getting hot , and then went to the tray i built to get it forward and up , raising the battery raises the CG also , a lot of the newer designs are running the batteries CG inline with the tail boom

hi SLC
what you are doing with the rates at 125 percent is roughly the same thing i am doing with the longer servo arms , i think using the duals like you have may be a better way to go , increasing the servo travel to 125 percent gives you better resolution , and you are not robbing torque like the longer servo arms i am using do , i am guessing that you would not get increased pitch unless you increase the swash screen percentage too , i could be wrong though , my thinking is in dual rates it only effects aileron or elevator , when there is aileron or elevator input , but it dosen't kick in with throttle pitch input , i will mess around an my JR and see , i am thinking i might go back to my stock arms if i can still get the -10 ~ +10 degree pitch increase and increased cyclic , i have been having a great time with this little machine and really enjoy working , modding and flying it

, dana

11-23-2007 03:05 AM

SLC
Senior Heliman
Location: Johnson City, Tn

Dual rates

Hi Copperclad
Yup you are guessing right. On my 7c you can change ail , elev, and rudder with DR. Changing the percent value on one will not effect the other. The pitch curve is separate and when bound to the 3 position swith on my 7c you can have 3 different ranges in your pitch curve .. normal, idle up 1 , idle up2 .

11-23-2007 03:52 AM

copperclad
Elite Veteran
Location: ..

hi Scott
yes , and there is the swash screen that on my JR has

aileron___60%
elevator__60%
pitch_____60%

you can reverse the action of one by going to a negative value , like
aileron___-60%

or change overall throw by increasing or decreasing the value

and i am thinking these values just effect throttle pitch changes and have no effect on the cyclic , where as the dual rates effect the cyclic and have no effect on throttle pitch changes , dana

11-23-2007 06:08 PM

GMPCOBRA
Heliman
Location: PORTLAND OR.

hay guys i am setting up my 450 and was wondering if i should use the servo grommets or not i think thay introduce some slop in the controls but dont know if it would be noticable in flight but at the same time any slop is a bad thing. i got a cc t-36 speed control and a aligne 430L whitch should be plenty for my current skill level. let me know what you think on this thanks
chris

11-24-2007 07:01 PM

copperclad
Elite Veteran
Location: ..

hi Chris
i ran the stock futaba servos , and was a bit bummed as they have grommets , i think the current thinking on small electric helis , is that grommets are not needed , and a lot of the small Hitec servos are made to just use screws

i ran with the grommets , as working around them seemed like a big P.I.T.A

, i was worried about the small plastic nuts heli-max supplied but i have a 4mm open end wrench ( crasftsman points wrench ) and they worked out pretty easy

and with the grommets and eyelets in place , the servos do have some play but in actual flight loads it is not noticable , so all in all , i would say not to worry , and just run with them

, dana

11-24-2007 07:13 PM

GMPCOBRA
Heliman
Location: PORTLAND OR.

o.k thanks for the info i will use them and see what happens. looking at my 400 i used them on that and thay seem to be tight with out to much slop or hardly any for that matter.

the only other problem i am having is the size of the servo scrues seem a bit large but thats not a problem really i have lots of servo scrues. i am using 3 jr servos on the cyclic sm22's and an aritronix 94091z servo on the tail all of whitch are slightly faster than the futaba 3107 servos with 20 oz of torque at .16 seconds on the sm22's and 18oz of torque at .12 seconds on the 94091z tail servo.

i will keep you informed on the build and hopefully post some pics in my gallary to

thanks for all the help.
chris

11-25-2007 05:53 AM

fiveoboy01
Veteran
Location: Waunakee, WI - USA

There's a reason they're so cheap, cause Tower can't sell any.

The quality stinks, despite all the metal bling, I wouldn't own another. Based on this heli I'd never own another Heli-Max product again. It flew nice but it was a pain to setup.

The 450SA despite the plastic head parts is a superior heli in every way, and that's comparing Align's "poor man's" 450 to Heli-Max's "full bling", "top shelf" 450.

11-25-2007 10:00 PM

binkyandbrain
Heliman
Location: cosby TN unitedstates

Well everybody has there opinion.Big question is why are you even over in this forum?

11-25-2007 11:12 PM

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e-Ark X-400 - MX400 > MX 450 really cheap

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