View Full Version : HDX 450 Build Videos will be here
BarnOwl
09-29-2006, 01:11 PM
Yeah, that works as well, but for the tail reduction I ordered a 105T tailgear instead of a 109T(HeliDirect HDX gears, not Align). That's also a way of reducing rpm on the tail.......
I really like the blue HDX main- and tailgears, this is one of the parts that I think is actually better than Align.
TeamTEOR
09-30-2006, 02:12 AM
My motor was defective and has been replaced, however I did not get a gear back with the new motor. I do not know what the pitch is or the ammount of teeth it had. I am going to head out to the local shop to see if they have any, but I am just not sure. In case I need to order up one, can someone please tell me the info I need to order the right stuff?
Sorry for the slow reply. I inserted a phillips screw driver that was slightly larger than the inside of the fitting to enlarge it. Be careful the fitting is soft and can be hard to get back in if you enlarge it to much. I'm going to get the Algn tail. This Sonix V2 tail has to many bugs.
dutch_anykey
09-30-2006, 06:18 AM
Hi,
Thanks Russ
Didnt think of that....i cleaned the parts..made it grease free...and inserted it back with contact glue.
But i have to check by hand if its strong enough...Else i will try you solution..
Cheers,
Maurice
What did you glue? The fitting spins with the blades. It must spin inside the bearing.
dutch_anykey
09-30-2006, 03:24 PM
Yes, I understand ;-)
I didnt glue it to the axel. I glued the fitting in the bearing (inside) so everything is spinning like its supposed to.
Cool. I was afraid to glue it. My fix only lasts a little while.
dutch_anykey
09-30-2006, 04:38 PM
Hi Russ,
Well keep it spinning till the glue is dry LOL...What i mean...take it easy on the glue..you dont want to spill it allover...specially not in the bearing..
As for the fix....i'm afraid it will come loose eventually in higher rpm's.....
I'm trying to figure out another solution in the meanwhile...cant fly anyway since i'm waiting on some replacement gears for my hitecs hs55's....and the hitec's hs65mg's + futaba digital. I ordered them from honkkong..(cheap)...but its public hollidays overthere...so it will be sent on the 3 of october :?
I think i will do the swap trick again with some towerpro sg90's I'll transplant the towerpro gears to the hitecs for a while....since the gears are the same (cant see the difference from the outside of the gears.....must be the quallity of the material...)
Anyway...this way i can testfly it tomorow again.
I'll keep you posted.
Cheers
Maurice
TeamTEOR
10-01-2006, 01:07 PM
Well I went and emailed HeliDirect about it since I didn't get any info back, so I figured I would share their answer in case future people have the same question. I still don't know the pitch.
Hello,
What pinion gear should I be using with the supplied 450 Silver & Blue motor?
Thanks,
Tom
Date: 2006-10-01 01:29:49
Name: Ann
Message:
Hi Tom,
The pinion 11 or 13T would be fine for the stock motor with 3.17mm shaft size.
Best Regards,
Ann
Customer Services
HeliDirect.com
dutch_anykey
10-02-2006, 07:04 AM
Hi Tom,
Well I went and emailed HeliDirect about it since I didn't get any info back, so I figured I would share their answer in case future people have the same question. I still don't know the pitch.
About the pinion...i guess you have to try 11T and 13T and whatever fits your personal taste/flying style. The pitch is related to it..
My opinion:
I fly 13T at the moment..i ordered a set of align pinions. I want to try the 11T as well. Its a well known fact that the stock motor that comes with the hdx kit is not to strong for real 3d flying....not that i'm at it right now. But i noticed at fast climds that motor start bogging down as well. My Pitch setting for hoover ..(you were asking?) i dont really know my pitch angle in hoover. I set it up in mode1 so midstick is 0 degree and the maximum is -11 and +11 degrees of pitch...If i calculate it directly...i start hoover at 3/4 of stick position... so my radio says 50 to 100% that means at 75% stick its hoovering.. radio 50 to 100% pitch is 0 to 11 degrees of pitch on the blades. So 75% is half of 11 degrees...that means my pitch would be 5,5 degrees when starting to hoover.
I want to try the 11T to see what is does. i'm hoping on more traction of the motor during fast climbs because of higher rpm of motor. The total headspeed i want to compensate by increasing the throttlecurve. (For the experts here...correct me if i'm wrong)
best regards,
Maurice
broke-again
10-06-2006, 09:05 PM
Just my opinion, but to anyone using the stock otter & motor that comes with the kit - ditch it! After going through 2 otter's (i finally learned the hard way) i purchased the align35(x) esc and 430 (3550kv) motor & boy what a difference!
I practically had to learn how to fly the heli all over again, it was a totally different experience...the power delivery is brilliant - smooth as butter and my battery packs seem to last longer too.
As a noob i didnt really know any better, but if i had to do it all again, id bin the stock stuff from the outset.
TeamTEOR
10-07-2006, 12:54 AM
Man, that stock motor is just that bad, huh? Well, I am going to an event in the morning, I'll look to see if there is a something there that I can replace it with from one of the vendors. As for the Otter ESC, I didn't get one with my kit, and that is fine with me. The E-Flite 40amp that was sitting here doing nothing will do just fine along with the UBEC.
I am not concerned about 3D at this point tho, it is mainly to learn how to fly in real life. I have been working quite a bit with Real Flight G3, but I am in no way comfortable with trying those moves out on something for real just yet. Heck, I just fly and crash like crazy on G3, besides, even choosing a .46 heli I am not going to get the same feel that I am going to get from the HDX450SE.
When I was refering to the pitch, I was talking about the pitch of the pinion gear itself. It is too small to be Mod1, is it Mod .5? Just was wondering so I can see what other gears were available. The shop that sold me the pack of pinions said they were the right pitch. I took their word as the person who sold it to me is a known heli pilot of helis in this size range. I still do not know what they are tho.
Thanks for the info guys.
Finless
10-07-2006, 01:18 AM
The Otter ESC actually has works pretty well and I have used it on several things... It's the motor that was not performing.... For me anyway.
Bob
dutch_anykey
10-07-2006, 05:06 AM
Boy do i feel stupid about the pitch :arggg:
didnt know you were reffering to the pinnion pitch.
I use the Align pinion's. no problem at all. Mine doesnt even look used (no show of wearing) after 40 flights or so.
And for that stock motor..i'm not into 3d (yet) so i dont have to worry about that performance yet i think. But it worries me what broke-again says..Learning to fly again? How bad can it be is my question now...
Maurice
broke-again
10-07-2006, 08:50 AM
Both my otters gave me issues, the first would cut in and out (yes it was all wired soundly) and i was always nervous using it in flight, the second would get very hot, one morning i got some dew in it and just died, im not talking about a lot of water, a few minute drops of dew - but it was enough to kill it.
But it worries me what broke-again says..Learning to fly again? How bad can it be is my question now...
Dont worry about what i say Maurice, when i swapped over the motor & esc it took me a few minutes to get a feel for things again. The power difference & delivery was very noticable and it felt like a different heli...a better one. :D Im using the same 13 tooth on the motor, but head speed is way better. The align esc, in my opinion just delivers the power in a much smoother fashion. Finless is right (as always :noteworthy )when he says the motor does not perform....again as a noob i didnt know any better and just made do with what i had.
ps61785
10-07-2006, 02:50 PM
Im new to this forum, but i have a question. I have a HDX450 and the thing flies great when im flying around at 70 percent throttle, the tail is rock solid and it seems to have plenty of power. I run an align 430L with 3550kv rating HS 56 cyclic servos a Futaba GY401 Gyro and Futaba S9650 Digital Servo on the tail. As soon as i flip the switch to go into high speed rotor mode (Stunt Mode) the tail drifts to the right (nose to the left) and the tail wags. Im not sure why this is. I run a DX6 for a radio and the heli flies great at 70 percent throttle. The heli also bogs is stunt mode when i put collective into it fast, is this normal. Please let me know if there is something that i need to fix or adjust. Thanks.
broke-again
10-07-2006, 03:02 PM
Have you watched Finless GY401 set up vid? I think it covers tail wag (hunting) and how to adjust the gyro gain. Im a noob, but i think that is the problem you have with the higher rpm when you switch over. Either way someone here will have the answer for you..and welcome to the club :D
ps61785
10-07-2006, 10:19 PM
Thanks for the tip...ill take a look at it and see if i can fix it. I just dont understand how it can be set up right for the lower RPM but not for the higher RPM. Do you figure that if i set it up for the higher RPM then it will be ok at the lower RPM as well.
ps61785
10-07-2006, 11:32 PM
I watched the videos but i couldnt find the one on the GY401 Gyro setup so there wasnt anything to lead me to a solution...does anyone have any other ideas or advice...im running a GY401 gyro and a Futaba S9650 digital servo...thanks in advance...
BarnOwl
10-08-2006, 04:01 AM
It's in the T-Rex section: http://video.helifreak.com/?subpath=finless/trex450&filename=gyro_setup.wmv
Regarding your problem also take a look at the throttle and pitchcurves vid in that section, it sounds as if they are not in line with each other.
All you HDX 450 owners should also look at these T-Rex build video's. Everything in there is VERY useful for the HDX as wel.......
ps61785
10-08-2006, 11:26 AM
I ended up finding that video, but it doesnt explain how to get rid of tail drift. It only does it in Idle up and its not bad enough where its out of control. Its correctable but it still has drift. Could there be something else that im missing.
dutch_anykey
10-09-2006, 05:27 AM
Guys,
Anybody knows if the trex 450 mainshaft and feathering shaft are compatible with the HDX's ones? Cant find the trex shaft dimensions anywhere on the net.
Shafts seems to be out of stock at HD ......
Finless
10-09-2006, 11:34 AM
Yes both will work on the HDX. Just dont use thos longer spacers with the Align feathering shaft.
Bob
broke-again
10-09-2006, 01:15 PM
I noticed last night that the align feathering shaft is a few mm shorter than the stock hdx. I couldnt get any from helidirect, so ordered align brand. The align ones are supplied with narrow spacers and they fit well on the hdx. :D
dutch_anykey
10-09-2006, 02:21 PM
Hi thanks Bob,
Well, last time i ordered the original feathering shaft they came with the short spacers....ofcourse i lost the original ones because that shaft is so hard that it doesnt bent but breaks. couldnt find the spacers back in the grass haha.
Anyway i had to dremel the shaft to get the right length.
So from what i hear the trex'es ones will be a better fit afterall :D
b.t.w. those have a lighter color...are they softer then the original ones?
Maurice