HobbyKing.com New Products Flash Sale
Reply
Thread Tools
Old Jan 12, 2009, 11:02 AM
Registered User
UK
Joined Apr 2005
102 Posts
Question
scale rotor head - 450 size blade grips

Hi,

I'm trying to make a low cost multiblade head for my Twinn Rexx and I just came across the vario 3 blade tail rotor hub with 5mm bore and I was thinking I could use it as a main rotor.

Looking at the dimensions of the components it looks like the standard 450 blade grips have no chance of fitting on as it uses 8 O.D. bearings and the hub requires bearings with 6mm I.D. and there's no such thing as 6x8x... ball bearings.

So, I'm after some 450 size blade grips that will fit 6x10x... ball bearings or any other blade grip that will fit 450 size blades in with spacers. Anyone know where I can get these?

Here's the link to the tail rotor

http://gb.vario-helicopter.biz/shop...oducts_id=36159

p.s. sorry for the double post. I posted in "multi rotor heli" forum by accident. Maybe the moderators can delete my other post?
j_js1 is offline Find More Posts by j_js1
Reply With Quote
Sign up now
to remove ads between posts
Old Jan 12, 2009, 11:07 AM
RC4Life not just 4 xmas
p4ddy's Avatar
southampton uk
Joined Jun 2006
4,987 Posts
Why not just get the Align 3 blade head? got to be a lot cheaper than anything from Vario.
p4ddy is offline Find More Posts by p4ddy
Reply With Quote
Old Jan 12, 2009, 11:28 AM
Registered User
UK
Joined Apr 2005
102 Posts
I think you're right there, Paddy, I forgot I would need a swashplate aswell and that would drive up the cost.
j_js1 is offline Find More Posts by j_js1
Reply With Quote
Old Jan 12, 2009, 01:55 PM
RCHN #150
Rickn816's Avatar
Lawrenceville, GA
Joined Nov 2007
5,985 Posts
Quote:
Originally Posted by j_js1
I think you're right there, Paddy, I forgot I would need a swashplate aswell and that would drive up the cost.
Yes. You need the swash. Multi-blade heads are not inexpensive.

Rick
Rickn816 is offline Find More Posts by Rickn816
Reply With Quote
Old Jan 12, 2009, 05:11 PM
Registered User
Christchurch, New Zealand
Joined Jun 2006
6,794 Posts
Lightning Heli and Heliartist make reasonably priced multiblade heads.
Andrew McGregor is offline Find More Posts by Andrew McGregor
Reply With Quote
Old Jan 12, 2009, 09:46 PM
Registered User
Singapore
Joined Jan 2004
1,830 Posts
Yup! Get the HeliArtist 3 bladed head for your TwinnRexx instead. They come with swash plate follower and the swash plate. Get the HeliArtist 3 bladed instead (The Lightning...don't really like it as compare to HeliArtist)

SH
Super_Hornet is offline Find More Posts by Super_Hornet
Reply With Quote
Old Jan 13, 2009, 05:16 AM
Registered User
UK
Joined Apr 2005
102 Posts
Thanks for the replies

Think I'll get the heliartist one - flying-hobby doesn't seem to have it instock

They do have the 4 blade one instock though! Are there any tandems that run 4 blade rotors in real life?
j_js1 is offline Find More Posts by j_js1
Last edited by j_js1; Jan 13, 2009 at 05:45 AM.
Reply With Quote
Old Jan 13, 2009, 06:44 AM
Registered User
Singapore
Joined Jan 2004
1,830 Posts
Yes... there do exist 4 bladed tandem heli. I saw it somewhere that I think it is a prototype of Chinook with 4 bladed per head.

SH
Super_Hornet is offline Find More Posts by Super_Hornet
Reply With Quote
Old Jan 13, 2009, 06:58 AM
Registered User
Singapore
Joined Jan 2004
1,830 Posts
Ah! Found it.
It is "Boeing-Vertol 347"




http://www.aviastar.org/helicopters_eng/bvertol_347.php
Super_Hornet is offline Find More Posts by Super_Hornet
Reply With Quote
Old Jan 14, 2009, 04:04 AM
Registered User
UK
Joined Apr 2005
102 Posts
Thanks SH

Not too sure about putting the wing on while flying though.
j_js1 is offline Find More Posts by j_js1
Reply With Quote
Reply


Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
Sold Copter X Complete Rotor Head 450 size Steve_C Aircraft - Electric - Helis (FS/W) 3 Dec 15, 2008 04:48 PM
Sold 4 blade head (450 size) Flying glass Aircraft - Electric - Helis (FS/W) 1 Oct 05, 2008 08:48 PM
Discussion Trex 450 Main Blade Grips livinma1 Mini Helis 4 Jun 30, 2007 01:07 AM
Sold 15 Trex 450 plastic blade grips CorvetteL98 Aircraft - Electric - Helis (FS/W) 1 Jun 01, 2007 10:34 PM
Sold Century 3D Pro head with CNC Blade Grips Sonex128 Aircraft - Electric - Helis (FS/W) 6 Feb 03, 2007 10:16 PM