X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from [206.46.252.42] (HELO vms042pub.verizon.net) by logan.com (CommuniGate Pro SMTP 4.3c5) with ESMTP id 944804 for flyrotary@lancaironline.net; Sun, 15 May 2005 13:18:58 -0400 Received: from verizon.net ([71.99.145.54]) by vms042.mailsrvcs.net (Sun Java System Messaging Server 6.2 HotFix 0.04 (built Dec 24 2004)) with ESMTPA id <0IGJ009QQK3DJ1Z3@vms042.mailsrvcs.net> for flyrotary@lancaironline.net; Sun, 15 May 2005 12:18:50 -0500 (CDT) Date: Sun, 15 May 2005 13:18:46 -0400 From: Finn Lassen Subject: Re: [FlyRotary] Re: Prop balancing? In-reply-to: To: Rotary motors in aircraft Message-id: <42878476.7040104@verizon.net> MIME-version: 1.0 Content-type: multipart/alternative; boundary=------------080403000004040302080707 X-Accept-Language: en-us, en References: User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.4) Gecko/20030624 Netscape/7.1 (ax; PROMO) This is a multi-part message in MIME format. --------------080403000004040302080707 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Do you think there would be a market for a $200 - $300 unit for homebuilts? Finn rijakits wrote: > I don't know about the old analog units, but the ones you can buy an > airplane for it! > Web are using ACES products which a re considered half the price of a > Chadwick. We use a 2020Turbo for the helicopters and it costs around > $12.000.- with all the software for the helicopters. > They have cheaper version for simpler problems, like props. > Check their website: http://www.acessystems.com/ > If for nothing else they have a interesting reading about balancing - > go to "downloads".... > I know there are cheaper systems for the experimetal market out there, > but I gues they are a little limited in certain aspects (I may wrong!!). > ACES is very easy to work with once you got through the manual (which > is very easy too!) > Ask them to send you a test unit, if you like it they may sell it to > you for a reduced price. > I am on good terms with them, if you want I can inquire about new, > used, rental units...... > This units can also be used for any and all kinds of balance - however > if you are serious about your gyro, you want to be able to do that as > well.... > With some fixtures you should even be able to balance rotors and > cranks dynamically! > Hell, you might make some extra bucks balancing all the props in your > area! Once you areb set up you should be done with 3-4 engine runs. > > > Thomas J. > > ----- Original Message ----- > From: Russell Duffy > To: Rotary motors in aircraft > Sent: Sunday, May 15, 2005 9:13 AM > Subject: [FlyRotary] Re: Prop balancing? > > I'm not familiar with the Chadwick unit, but it probably operates > on the same principle using a vibration sensor on the engine and > an optical sensor to pick up reflective tape on one prop blade. No > reason it shouldn't work. > > > Thanks for the info Perry. The Chadwick was just as > you describe, a vibration/optical sensor that mounted to the > redrive plate, and a piece of tape on the prop. The guy who was > running it admitted that it was probably something he just didn't > know how to set. The unit actually belongs to his son, but he's > working two jobs, and I never see him anymore. > > At least it's good to know that it should probably work. > > BTW, does anyone have any idea how much these things cost? I > assume "a lot". > > Cheers, > Rusty > > > > --------------080403000004040302080707 Content-Type: text/html; charset=us-ascii Content-Transfer-Encoding: 7bit Do you think there would be a market for a $200 - $300 unit for homebuilts?

Finn

rijakits wrote:
Message
I don't know about the old analog units, but the ones you can buy an airplane for it!
Web are using ACES products which a re considered half the price of a Chadwick. We use a 2020Turbo for the helicopters and it costs around $12.000.- with all the software for the helicopters.
They have cheaper version for simpler problems, like props.
Check their website: http://www.acessystems.com/
If for nothing else they have a interesting reading about balancing - go to "downloads"....
I know there are cheaper systems for the experimetal market out there, but I gues they are a little limited in certain aspects (I may wrong!!).
ACES is very easy to work with once you got through the manual (which is very easy too!)
Ask them to send you a test unit, if you like it they may sell it to you for a reduced price.
I am on good terms with them, if you want I can inquire about new, used, rental units......
This units can also be used for any and all kinds of balance - however if you are serious about your gyro, you want to be able to do that as well....
With some fixtures you should even be able to balance rotors and cranks dynamically!
Hell, you might make some extra bucks balancing all the props in your area! Once you areb set up you should be done with 3-4 engine runs.
 
 
Thomas J.
----- Original Message -----
Sent: Sunday, May 15, 2005 9:13 AM
Subject: [FlyRotary] Re: Prop balancing?

I'm not familiar with the Chadwick unit, but it probably operates on the same principle using a vibration sensor on the engine and an optical sensor to pick up reflective tape on one prop blade. No reason it shouldn't work.

 
Thanks for the info Perry.  The Chadwick was just as you describe,  a vibration/optical sensor that mounted to the redrive plate, and a piece of tape on the prop.  The guy who was running it admitted that it was probably something he just didn't know how to set.  The unit actually belongs to his son, but he's working two jobs, and I never see him anymore.  
 
At least it's good to know that it should probably work.  
 
BTW, does anyone have any idea how much these things cost?  I assume "a lot". 
 
Cheers,
Rusty
 
 
  
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