Fun, Learning, Friendship and Mutual Respect START  HERE


Unregistered
Go Back   HeliFreak > R/C Helicopter Support > Blade Helicopters (eFlite) > Blade 450X


Blade 450X Blade 450X Helicopters Information and Help


Reply
 
LinkBack Thread Tools Display Modes
Old 08-16-2013, 04:12 AM   #1 (permalink)
Registered Users
 
Posts: 290
 

Join Date: Mar 2012
Cool STRETCHING the Blade 450 X

Quote:
Originally Posted by KiloXray View Post
I have questions about this! Please do start a thread! You mention "stretching parts". How exactly are you doing this? I suppose All you need is a longer boom and belt. Where do you get those? How long is the stretch?
Ok I try to do my best for you guys to write my knowledge down.

Well I first started without stretching. I just mounted the Radix 350 on it. I started with slow test flights afraid of tail rotor strikes. I got none. Even with very hard flying. There were three reasons for it I think. One, I have the LYNX dampeners that are solid POM rings so very hard. Secondly, The Radix are very stiff so the overall flexibility is low. THird, I synchronized main and tail rotor to not hit each other, sounds wired but works.

I have to say this is an easy way to fly 350 blades on a "stock" 450x but maybe not the best. I havent realized aerodynmic tail weakness or interference but the efficency could propably better.

Due to a light accident I damaged the Radix...So I tried the Spinblades Red Tips 350mm.

They are verly flexibel, light, and very fast. Here it happend to get tail strikes.
So I finally decided to stretch for real.

Tarot hast some stretching parts for the Trex. So I tried the Tarot 453T Long Tail Belt.

For the boom I bought a cheap alluminium tube 14 x 12 x 1000mm. 1mm section thickness is more than stock so it is kind of heavy. Youn can use carbon fiber as well, I did not yet.

Cut it to 420mm, cut one guide slot for the frame mount and the two holes for the tail case. It it not that hard if you are able to do some handcraft.

Thats how it looked.




You see I havent stretched the tail pushrod yet. which I later did..

All I can say is it flys awesome! You never want back to shorter blades, that is what all say



Well I even damaged those blades not even knew how..

So I tried the tarot 360mm Blades, that actually are also 350mm ones an like the compass warp ones.




And guess what I damaged them too. Seemed like a fatigue breake of the main grip push rods....

Liked the Radix best so far but not their price..so the original compass warp blades are on its way to me now.

Ok now it is time for questions from you.

Sup?
Attached Thumbnails
Click image for larger version

Name:	IMG_20130807_140738.jpg
Views:	2582
Size:	43.3 KB
ID:	443906   Click image for larger version

Name:	IMG-20130808-WA0003.jpg
Views:	2615
Size:	68.2 KB
ID:	443907   Click image for larger version

Name:	IMG_5043[1].jpg
Views:	2703
Size:	72.1 KB
ID:	443908  
__________________
full 2s/3s mcpx , 450x 4s BLHeli, Rex500/550 stretch BLHeli TARANIS

Last edited by Diablol; 08-16-2013 at 08:02 AM..
Diablol is offline        Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Old 08-16-2013, 04:31 AM   #2 (permalink)
Registered Users
 
Posts: 9,105
 

Join Date: Aug 2011
Default

Firstly, congrats, nice job.

How are you damaging your blades? They hit the tailblades even with the longer boom? Boom slipping?

How is the CG?
__________________

spykez is offline        Reply With Quote Quick reply to this message
Old 08-16-2013, 06:02 AM   #3 (permalink)
Registered Users
 
Posts: 290
Thread Starter Thread Starter
 

Join Date: Mar 2012
Default

Quote:
Firstly, congrats, nice job.
Thank you!

Quote:
How are you damaging your blades?
Differently.
Radix crashed in high grass, not hitting my landing area..suddelny kids were around
Spinblades..dunno, either at "lawn mowing" or it collied with a fly..no clue..lol
Tarot due to a fall out of 30 meters because of the linkage breake.

Had an unlucky series...


Quote:
They hit the tailblades even with the longer boom? Boom slipping?
No.

Quote:
How is the CG?
Well the CG is actually perfect at the moment. But I fly 3s 2400mah or 4s 1800. they are heavy enough. It just depends on your setting.
__________________
full 2s/3s mcpx , 450x 4s BLHeli, Rex500/550 stretch BLHeli TARANIS
Diablol is offline        Reply With Quote Quick reply to this message
Old 08-16-2013, 07:29 AM   #4 (permalink)
Registered Users
 

Join Date: Mar 2012
Default

Yes, great job. What is the rest of your setup, esc, servos etc.
wab223 is offline        Reply With Quote Quick reply to this message
Old 08-16-2013, 07:54 AM   #5 (permalink)
Registered Users
 
Posts: 290
Thread Starter Thread Starter
 

Join Date: Mar 2012
Default

you see a part in the video description but here detailed

I run an Align 450 MX 3400kv with a Turnigy Plush 40A ESC flashed with BLHeli !
Gryphon Polaris BEC
4x TGY 306 Servos
EDGE tail blades
Alu tail grips
3s 2400mah for up to 13min cruise
4s 1800mah for smackdown
Lynx dampers
__________________
full 2s/3s mcpx , 450x 4s BLHeli, Rex500/550 stretch BLHeli TARANIS
Diablol is offline        Reply With Quote Quick reply to this message
Old 08-16-2013, 10:12 AM   #6 (permalink)
The Airetic
 
Posts: 9,372
 

Join Date: Nov 2012
Default

Awesome! This is super cool. I think making a boom from CF would be very easy. I may try this, later this year.

I appreciate the write up. Thank you very much.
__________________
Free Agent....With standalone opinions.
KiloXray is offline        Reply With Quote Quick reply to this message
Old 08-16-2013, 10:14 AM   #7 (permalink)
 

Join Date: Aug 2013
Default

Quote:
Originally Posted by Diablol View Post
I synchronized main and tail rotor to not hit each other, sounds wired but works.

That won't work. They don't spin at the same RPM so they will get out of time almost instantly on spool up. The only reason blade syncromesh works with the CH-46, CH-47, Kaman V-Max, etc is because the transmission systems are geared to spin the heads at exactly the same RPM.
Barshinderson is offline        Reply With Quote Quick reply to this message
Old 08-16-2013, 10:30 AM   #8 (permalink)
Registered Users
 
Posts: 290
Thread Starter Thread Starter
 

Join Date: Mar 2012
Default

Quote:
Originally Posted by Barshinderson View Post
That won't work. They don't spin at the same RPM so they will get out of time almost instantly on spool up. The only reason blade syncromesh works with the CH-46, CH-47, Kaman V-Max, etc is because the transmission systems are geared to spin the heads at exactly the same RPM.
I am not able to say for sure if it really works.
BUT you dont need the same headspeed. All you need is a transmission with an even value. E.g. if the main head does 1 round the tail does 3 full rounds and NOT 3 and a half.
I can tell because my setting hasnt changed during flight and I tested many rounds on the table.

Much more unknown are the (aero)dynmaic positions of the blades. So you can only fit it under static conditions.
__________________
full 2s/3s mcpx , 450x 4s BLHeli, Rex500/550 stretch BLHeli TARANIS
Diablol is offline        Reply With Quote Quick reply to this message
Old 08-16-2013, 10:34 AM   #9 (permalink)
 

Join Date: Aug 2013
Default

Quote:
Originally Posted by Diablol View Post
I am not able to say for sure if it really works.
BUT you dont need the same headspeed. All you need is a transmission with an even value. E.g. if the main head does 1 round the tail does 3 full rounds and NOT 3 and a half.
You don't have an even ratio if you're using the stock gearing. If you aren't, then I missed that. The stock 450X has a fractional gearing ratio. It is not exactly even.
Barshinderson is offline        Reply With Quote Quick reply to this message
Old 08-16-2013, 10:41 AM   #10 (permalink)
Registered Users
 
Posts: 290
Thread Starter Thread Starter
 

Join Date: Mar 2012
Default

Ok!
I havent checked the mathematical gearing yet so I trust you. If thats true it is an important information. Thanks.

Fortunately I fly stretched now


EDIT: wait what is the stock gearing again?
I run a 12T

EDIT: ^^forget about it that is not important because the tail gear is always the same..


EDIT: Do you know the exact tail ratio? Isnt it exactly 5:1 ?
__________________
full 2s/3s mcpx , 450x 4s BLHeli, Rex500/550 stretch BLHeli TARANIS
Diablol is offline        Reply With Quote Quick reply to this message
Old 08-16-2013, 11:26 AM   #11 (permalink)
The Airetic
 
Posts: 9,372
 

Join Date: Nov 2012
Default

Tail ratio should =# of teeth on main tail gear / # of teeth on the belt gear in the frame.

I don't know what those numbers are though.
__________________
Free Agent....With standalone opinions.
KiloXray is offline        Reply With Quote Quick reply to this message
Old 08-16-2013, 12:00 PM   #12 (permalink)
Registered Users
 
Posts: 290
Thread Starter Thread Starter
 

Join Date: Mar 2012
Default

It IS exactly 5:1

This supports my experience as well.
__________________
full 2s/3s mcpx , 450x 4s BLHeli, Rex500/550 stretch BLHeli TARANIS
Diablol is offline        Reply With Quote Quick reply to this message
Old 08-16-2013, 12:25 PM   #13 (permalink)
The Airetic
 
Posts: 9,372
 

Join Date: Nov 2012
Default

So did you decide on 420mm boom length because that is what you needed for that particular belt? The tail looks like it is a little too long. Do you know of any other belts that at a tad shorter?

Also. I take it the belt meshes perfectly with the stock 450x gears?
__________________
Free Agent....With standalone opinions.
KiloXray is offline        Reply With Quote Quick reply to this message
Old 08-16-2013, 12:38 PM   #14 (permalink)
 

Join Date: Aug 2013
Default

Quote:
Originally Posted by Diablol View Post
EDIT: wait what is the stock gearing again?
I run a 12T

EDIT: ^^forget about it that is not important because the tail gear is always the same..

If you change motor pinion sizes, it is important because the main gear is locked to the tail gear below it in powered flight via the OWB, so they spin at the same RPM. Head speed goes up or down, so does tail speed in a corresponding manner in coupled flight.
Barshinderson is offline        Reply With Quote Quick reply to this message
Old 08-16-2013, 03:38 PM   #15 (permalink)
Registered Users
 
Posts: 290
Thread Starter Thread Starter
 

Join Date: Mar 2012
Default

Quote:
So did you decide on 420mm boom length because that is what you needed for that particular belt?
yes, my wish would also be a little shorter.

Quote:
The tail looks like it is a little too long. Do you know of any other belts that at a tad shorter?
that is typical for stretch kits, you could also use 360mm blades although there were rarely none and larger tail blades.

I actually tried another belt before. It was an industrial one that fit about the same measures and was shorter.
But it was too stif and couldnt run the small diameter at high speed well. And it was very expensive.

I am sure there are a enough companys that would have the right one. But I got the Tarot one fast, easy and cheap and it runs well. Those 10mm are not so bad it looks good in the air I find.

On that picture where it looks so long is no tail boom support that makes it look even longer! You will see.


Quote:
Also. I take it the belt meshes perfectly with the stock 450x gears?
It is desinged for the Trex 450. Those belts are useable for the blade too.
__________________
full 2s/3s mcpx , 450x 4s BLHeli, Rex500/550 stretch BLHeli TARANIS
Diablol is offline        Reply With Quote Quick reply to this message
Old 08-17-2013, 06:40 PM   #16 (permalink)
The Airetic
 
Posts: 9,372
 

Join Date: Nov 2012
Default

Does anyone know the dimensions of the stock belt? Specifically, the length and tooth count? I am out of town for a couple of weeks and don't have one on hand to count or look at.
__________________
Free Agent....With standalone opinions.
KiloXray is offline        Reply With Quote Quick reply to this message
Old 08-18-2013, 07:00 AM   #17 (permalink)
Registered Users
 
Posts: 290
Thread Starter Thread Starter
 

Join Date: Mar 2012
Default

2M-810-3

Profile typ is 2M
810 mm long (open ring)
405 teeth or 405mm long closed
__________________
full 2s/3s mcpx , 450x 4s BLHeli, Rex500/550 stretch BLHeli TARANIS
Diablol is offline        Reply With Quote Quick reply to this message
Old 08-18-2013, 03:17 PM   #18 (permalink)
The Airetic
 
Posts: 9,372
 

Join Date: Nov 2012
Default

Thanks! I am on the hunt for a belt that is in the 425-440mm range.
__________________
Free Agent....With standalone opinions.
KiloXray is offline        Reply With Quote Quick reply to this message
Old 09-17-2013, 04:06 PM   #19 (permalink)
Registered Users
 
Posts: 21
 

Join Date: Sep 2013
Default STRETCHING the Blade 450 X

Kilo Xray, that is an awesome canopy, where did you get it?
ST1S is offline        Reply With Quote Quick reply to this message
Old 09-17-2013, 06:44 PM   #20 (permalink)
Registered Users
 
Posts: 350
 

Join Date: Apr 2012
Default

Quote:
Originally Posted by Diablol View Post
you see a part in the video description but here detailed

I run an Align 450 MX 3400kv with a Turnigy Plush 40A ESC flashed with BLHeli !
Gryphon Polaris BEC
4x TGY 306 Servos
EDGE tail blades
Alu tail grips
3s 2400mah for up to 13min cruise
4s 1800mah for smackdown
Lynx dampers
Have you had any problems with slop with the lynx dampers? I'm running them but don't like the slop they have.
Temptation is offline        Reply With Quote Quick reply to this message
Reply

Tags
450x, radix, stretch




Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the HeliFreak forums, you must first register.
Please enter your desired user name, your REAL and WORKING email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself. Use a real email address or you will not be granted access to the site. Thank you.
Email Address:
Location
Where do you live? ie: Country, State, City or General Geographic Location please.
Name and Lastname
Enter name and last name here. (This information is not shown to the general public. Optional)
Helicopter #1
Enter Helicopter #1 type and equipment.
Helicopter #2
Enter Helicopter #2 type and equipment.
Helicopter #3
Enter Helicopter #3 type and equipment.
Helicopter #4
Enter Helicopter #4 type and equipment.

Log-in


Thread Tools
Display Modes

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On




Copyright © Website Acquisitions Inc. All rights reserved.
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2020 DragonByte Technologies Ltd.

SEO by vBSEO 3.6.1