X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from mpls-qmqp-05.inet.qwest.net ([63.231.195.116] verified) by logan.com (CommuniGate Pro SMTP 4.3c5) with SMTP id 944827 for flyrotary@lancaironline.net; Sun, 15 May 2005 14:15:44 -0400 Received-SPF: none receiver=logan.com; client-ip=63.231.195.116; envelope-from=jsrccw@qwest.net Received: (qmail 69926 invoked by uid 0); 15 May 2005 18:14:42 -0000 Received: from unknown (63.231.195.5) by mpls-qmqp-05.inet.qwest.net with QMQP; 15 May 2005 18:14:42 -0000 Received: from 65-101-28-170.phnx.qwest.net (HELO ?127.0.0.1?) (65.101.28.170) by mpls-pop-05.inet.qwest.net with SMTP; 15 May 2005 18:14:59 -0000 Date: Sun, 15 May 2005 11:15:11 -0700 Message-ID: <428791AF.7000902@qwest.net> From: "Jim Sevanick" To: "Rotary motors in aircraft" User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.7.2) Gecko/20040804 Netscape/7.2 (ax) X-Accept-Language: en-us, en MIME-Version: 1.0 Subject: Re: [FlyRotary] Re: Prop balancing? References: In-Reply-To: Content-Type: multipart/alternative; boundary="------------030002010600040707060504" This is a multi-part message in MIME format. --------------030002010600040707060504 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Finn Lassen wrote: > 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 >> >> >> >> I just registered here and have not read all the back posts on this one but a unit that is used on experimental helicopters with some success is microvib. See www.dssmicro.com I don't have pricing info but considerably less than certified units. Regards..........Jim. --------------030002010600040707060504 Content-Type: text/html; charset=us-ascii Content-Transfer-Encoding: 7bit Finn Lassen wrote:
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
 
 
  
I just registered here and have not read all the back posts on this one but  a unit that is used
on experimental helicopters with some success is microvib.  See www.dssmicro.com
I don't have pricing info but considerably less than certified units.
Regards..........Jim.
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