Search found 215 matches

by awallin
10 Apr 2006, 12:52
Forum: General IOM
Topic: post curing out of mould ?
Replies: 7
Views: 8763

What are you guys using Hi Anders I would not consider myself an expert builder but I have recently made a hull using 2 layers of 165g/m2 cloth with both layers at 90 degrees. I do not post cure other than puting the hull and mould in a warm (35-40) cupboard for a few days and the hull appears stif...
by awallin
31 Mar 2006, 21:39
Forum: General IOM
Topic: post curing out of mould ?
Replies: 7
Views: 8763

Hi Steve, thanks for your comments. The mould is polyester ("isoftal", I am told this kind shrinks less when curing than normal polyester) The boats will be made with epoxy ofcourse. The 6 hours at 60 C recommendation is for an epoxy(SP ampreg 2? ) with a very slow hardener, several hours pot-life. ...
by awallin
31 Mar 2006, 10:16
Forum: General IOM
Topic: post curing out of mould ?
Replies: 7
Views: 8763

post curing out of mould ?

Hi group, a question for experienced builders: I have a new mould which I do not want to mess up. In the past I have destroyed a number of moulds by temp-cycling i.e. repeated heating of them while post curing (the mould surface slowly develops irregularities etc. when you do this for 10-15 hulls......
by awallin
13 Feb 2006, 17:01
Forum: General IOM
Topic: Texalium as an approved material?
Replies: 15
Views: 18373

We had the discussion on pigmented glassfibre used in the Dsico, can Texalium come in under this definition? Basicly it is a pigmentation? This reminds me of something that I thought about a while ago. Is the use colored epoxy resin within the class rules ? Many suppliers only supply a colored hard...
by awallin
12 Feb 2006, 13:32
Forum: General IOM
Topic: Texalium as an approved material?
Replies: 15
Views: 18373

Hi Steve, My personal opinion is that any surface coating which primary purpose is cosmetic rather than structural should be allowed. If anyone has any smart ideas on how to change or add to class rule D.2.1, I am sure the technical sub-committee would be interested in hearing about them ! Or, would...
by awallin
02 Feb 2006, 19:05
Forum: Marketplace
Topic: Sold: Hitec HS-5745MG servo
Replies: 0
Views: 5341

Sold: Hitec HS-5745MG servo

update 2006Feb15: sold


Image
New, complete with carbon arm, pekabe block, fuse, elastic, and instructions.
70 euro.

anders.wallin(at)helsinki.fi
by awallin
02 Feb 2006, 18:23
Forum: General IOM
Topic: Spektrum RC on Futaba 3VC
Replies: 44
Views: 51377

not much info available on the futaba system yet, but apparently it has been sighted at the Nurnberg hobby expo:
Image

Image
by awallin
29 Jan 2006, 11:07
Forum: Marketplace
Topic: Sold: Boat and rig flightcase (SKB Golf case)
Replies: 0
Views: 5663

Sold: Boat and rig flightcase (SKB Golf case)

Update 2Feb2006: the box is sold. http://www.anderswallin.net/wp-content/4sale/skb_boat.jpg I'm selling an SKB 5020W case made for shipping two golfbags on an airplane. see specifications here http://www.skbcases.com/sports/product/golf/hard.html It will fit an IOM boat, the no3 rig without modifica...
by awallin
11 Jan 2006, 21:29
Forum: General IOM
Topic: mapping the IOM world
Replies: 0
Views: 4631

mapping the IOM world

Using Frappr, an online interactive map website, Frank Vella has created a page called iomskippersworldwide for all IOM skippers.

Take a look at
http://www.frappr.com/iomskippersworldwide

and register yourself if you think it's a fun idea !
you can add a picture of your boat also.

Anders
by awallin
06 Jan 2006, 00:51
Forum: Events and Event Management
Topic: European Championships 2006 - Current Status
Replies: 6
Views: 9112

European Championships 2006 - Current Status

I am becoming increasingly aware of a number of rumors about the supposed venue and date for the 2006 IOM European Championships, so a re-statements of the facts is in order. The owners meeting at Mooloolaba requested that IOMICA make more clear where and when future events are held. The website was...
by awallin
26 Dec 2005, 21:00
Forum: Events and Event Management
Topic: Number of boats to promote
Replies: 25
Views: 27734

I've now included the 2004 euro results and also plotted the standard deviations I get by excluding the discarded scores when calculating the stdev. see pic below. If you want to model the actual performance of a skipper then I would think that you want the discards to count towards a higher standar...
by awallin
26 Dec 2005, 10:48
Forum: Events and Event Management
Topic: Number of boats to promote
Replies: 25
Views: 27734

this is the kind of analysis I was talking about: http://electronics.physics.helsinki.fi/personal/awallin/image001.gif scores are from mooloolaba and vancouver. no discards when calculating the standard deviation. the R^2 numbers are not great but there does seem to be a trend: the top 20 or so skip...
by awallin
23 Dec 2005, 21:38
Forum: Events and Event Management
Topic: Number of boats to promote
Replies: 25
Views: 27734

Hi Lester, A nice idea ! being an experimentalist myself I would suggest trying anchor the model in reality. (do away with any more or less artificial model for incidents, protests etc.) For example, look at the scores from vancouver, arcos, and mooloolaba. For each competitor, compute the standard ...
by awallin
09 Dec 2005, 08:41
Forum: Class Rules
Topic: What will happen on 1st of June 2006 ?
Replies: 17
Views: 22832

I have seen that in Germany they are offering stainless steel bulbs'. No need to cast anymore! , though I have never done it, I read on several occasions that it could have some health issues. Interestign ! do you have some pictures or links ? Steel (or brass) does not ofcourse have the density of ...
by awallin
09 Dec 2005, 08:35
Forum: General IOM
Topic: Spektrum RC on Futaba 3VC
Replies: 44
Views: 51377

Hi Anders How many sailors is there in one heat? over 40? Do you think there will be a problem in the future with the spectrum?? We've had 20 boats per heat now in Vancouver ´03, Arcos ´04 and Mooloolaba ´05. It worked really well in Vancouver where the overview from the control area was excepti...
by awallin
08 Dec 2005, 18:05
Forum: General IOM
Topic: Spektrum RC on Futaba 3VC
Replies: 44
Views: 51377

I think we were three that sailed with the Spektrum in Mooloolaba (myself, Rob Guyatt, and Ken Binks). I predict that it will catch on pretty quickly so I would not be surprised if we have 20-40 skippers using it at the next big international event... As I understand it the receivers will not lock o...
by awallin
01 Dec 2005, 08:38
Forum: Class Associations and Class Management
Topic: IOMICA Executive positions
Replies: 16
Views: 23225

an update on what is going on... The Mooloolaba meeting elected the following executive: Chairman: Greg Willis (AUS) VC Technical: Nigel Winkley (GER) VC Infocomms: Anders Wallin (FIN) Treasruer: Rob OBrien (AUS) Rob has now resigned. The executive is now free to co-opt whoever it wishes for the vac...
by awallin
29 Nov 2005, 08:54
Forum: Class Associations and Class Management
Topic: Robert O'Brien resigns
Replies: 0
Views: 5268

Robert O'Brien resigns

Robert O'Brien (AUS) posted a message to the forum yesterday indicating that he resigns from the position of Tresurer due to personal reasons. This means that the IOMICA executive now desperately needs to co-opt people interested in working for the future of the IOM class. If you know any, let us kn...
by awallin
29 Nov 2005, 08:54
Forum: Class Associations and Class Management
Topic: IOMICA Executive positions
Replies: 16
Views: 23225

I understand there is a 'candidate' willing to be co-opted for VC Measurements. What is the official proceedure for this and for the 'removal' of the current VC measurements. Should not the names of these possible candidates be made public so all can give their opinions? I have asked for the names ...
by awallin
23 Nov 2005, 14:20
Forum: General IOM
Topic: Spektrum RC on Futaba 3VC
Replies: 44
Views: 51377

Can anyone tell me of any experiences with the Spektrum modules and a JR-X3810 ? My friend has this radio on 35MHz for airplanes but would like to use it for his IOM also. Also, if anyone has had a chance to try out the new Spektrum DX6 in an IOM, I'm sure the rest of the world would be eager to hea...
by awallin
21 Nov 2005, 23:17
Forum: Marketplace
Topic: Sold. FS: 7 pairs of 40 MHz Xtals
Replies: 0
Views: 5259

Sold. FS: 7 pairs of 40 MHz Xtals

I am selling 7 pairs of 40 MHz Xtals used with Futaba 3VCS and FF6 transmitters and PCM receivers.
see
http://www.iom-nordic.org/index.php?opt ... &Itemid=93

sold as 7 pairs together only, not one by one...

Anders


Edit 29nov05: the crystals are sold.
by awallin
16 Nov 2005, 10:09
Forum: Class Rules
Topic: What will happen on 1st of June 2006 ?
Replies: 17
Views: 22832

Hi Eric, the document you linked to(Directive 2002/96/EC) is a bit... long and cryptic... If you are well versed in the EU documentation, could you pick out for us the relevant paragraphs ? I've been meaning to try out a solid brass bulb whenever I get my hands on som machining time on a cnc lathe.....
by awallin
30 Oct 2005, 15:41
Forum: Class Associations and Class Management
Topic: 2005 world champion picture for website
Replies: 3
Views: 7675

Just updated the page with a picture sent in by Graeme Turk - thanks !
by awallin
28 Oct 2005, 21:31
Forum: Class Associations and Class Management
Topic: 2005 world champion picture for website
Replies: 3
Views: 7675

2005 world champion picture for website

Hi All, I'd like to update the regatta page, http://www.iomclass.org/regattas.htm , with a picture of Craig Smith, preferably similar to the ones of Graham and Trevor: skipper+boat. I've got some fun ones: http://el-servo.physics.helsinki.fi/personal/awallin/vm_bilder/photos/photo30.jpg but maybe th...
by awallin
26 Oct 2005, 08:39
Forum: General IOM
Topic: How to choose a radio transmitter?
Replies: 7
Views: 11300

Futaba 3VCS + Spektrum DSM Tx and Rx module. Works on 2.4GHz, no crystals, as jitter free as PCM. You need to be careful with the Rx antenna to get good range, see the RMG website for one option. Prices for the 3VCS in europe are crazy, I got mine from hong-kong (www.rcmushroom.com). I find that the...
by awallin
20 Oct 2005, 20:41
Forum: General IOM
Topic: Oval Foredeck holes
Replies: 70
Views: 83732

Re: Oval holes

Perhaps someone has a photo of the Cockatoo foredeck they could post. hmm this one is the best I can find... and it's not very good. with a little imagination you can make out a nearly square hole for the no1 jib (I think theres a no2 jib in the pic) - I would estimate it's about half as wide as th...
by awallin
18 Oct 2005, 23:26
Forum: General IOM
Topic: Oval Foredeck holes
Replies: 70
Views: 83732

Here's a picture of the foredeck on Michaels boat: http://electronics.physics.helsinki.fi/personal/awallin/jibattach.jpg The new cockatoos had more moderately oval holes and only for the no1 rig if I remember correctly. A couple of years ago there was some discussion about this way of attaching the ...
by awallin
11 Oct 2005, 09:19
Forum: General IOM
Topic: Mast rake
Replies: 7
Views: 11188

Re: Mast rake

andy111 wrote: I know each boat’s going to be different, but is there a rule on thumb that’ll get me started?
1rig: 0 to 2 deg back (more forward in heavy weather, back in light)
2rig: 1 to 3 deg back
3rig: 2 to 4 deg back

it will ofcourse be different for each hull...

AW
by awallin
08 Oct 2005, 19:39
Forum: Class Associations and Class Management
Topic: 2005 WC Meeting Minutes
Replies: 0
Views: 5161

2005 WC Meeting Minutes

2005 WC Meeting Minutes now posted on www.iomclass.org