12h Rogaining, Kirkkonummi

My first ever 12h rogaining event. Rogaining is like orienteering with points awarded for each control, with many more controls than an average team can hope to find, and the order in which you visit them is not important. We started at 20:00 in the evening and were using headlamps within about three hours. Most of the crowd seemed to head north, while we headed east to begin with.

The first few controls were close by roads, and we noticed soon after the first control (km 2-3) that short-cuts through the woods would result in very wet and cold feet. No problems with control nr2 (km 4-5), and a bit of luck at number three (km 6-7) where we walked straight onto the control while passing others who were reading the map carefully and circled around a nearby hill. On our map the control was marked on the wrong hill, maybe 200m to the east of its actual location. Everyone got a text message about this at some point.

Our fourth control (km 9) was again relatively straightforward, although we were already realising how hard it is to estimate distance on the map without roads, electric wires, or other hard/known reference points. Our fifth control was on top of a hill (km 12), now already in darkness with headlamps and flash-lights. The controls had reflectors on them which at night made them visible from far away if you pointed your light in the right direction. Number six (km 14) was also OK, but again it was difficult to estimate how far we were walking in the woods - walking on the road is so much quicker that it feels like it's taking a very long time to cover a short distance on the map in the woods. Our seventh control (around km 16-17) was only worth 2 points, and we made a bit of a mess of it. Took the road to come as close as possible, and then it was supposed to be mostly open rock until the control. Not so. Lots of woods, wet places, and difficult terrain. We weren't the only ones circling around here and others were clearly audible in the quiet of the night as well as visible by their headlamps. After the control we finally found our way back to the small road (km 18) again after abandoning thoughts of finding a 5-point control deeper into the woods and across some really wet terrain. Back at the starting-point we heard that others had searched for an hour or more without finding this 5-pointer, so a reasonable decision to abandon this one. Back on the road again and south. This is where the GPS dies in the picture below.

Although the garmin edge 800 is supposed to have a 15 hour battery life, mine gave up after just six, and this is the trace it shows on top of a cloudy google earth map.

Followed the road all the way to km 25 to take an easy 4-point control (our eight) close to a small road. Then again walking along roads and edges of fields to control nr 9 (km 29). More roads towards control ten (km 31), and at this point I think everyone started to have tired legs and feet. My legs were tired but not in horrible shape, but some developing blisters in my now soaking wet shoes were more problematic. Northward along a bigger road to control eleven (km 33), which was placed on a small islet in the middle of a pond. The controls had been put out weeks before when the ice and snow still carried the organisers on skis/snow-shoes. Now it was much warmer, damper, and softer. My team mate nearly took an involuntary swim here! Now the day was starting to brighten again and we had about three hours left before our 08:0o morning check-in back at the start. Followed a road towards our second to last control (km 36) at the edge of a field at a stream, then followed the same edge of the field to a path leading to our last control (km 38). Tired but in good spirits we walked back to the start (km 40) and finished with maybe 35-40 min to spare on the time-limit.

Here's a drawing, by hand, from gmap-pedometer which roughly shows our route(Link to this map: http://www.gmap-pedometer.com/?r=4450114):

Here are the two A3 size maps we were given.

Our route was: start - 22 - 30 - 26 - 58 - 47 - 38 - 29 - 54 - 48 - 40 - 49 - 37 - 20 - start.

and the southern part:


New manual milling machine

There is a new manual milling machine in the lab, an Optimum WF-20. The design of the machine is similar to the Aciera or a Maho, with the table moving in X and Z, spindle in Y. The spindle can be flipped over for horizontal machining.

We decided to get a machine with a small work-envelope (table XY travel is 260x170 mm), but with good rigidity and hopefully good precision. The machine is around 4 keur but with the magnetic DRO and some basic accessories plus delivery the cost is closer to 6 keur. Add another 1-2 keur for toolholders and tools.

The machine has an ISO30 taper spindle with an M12 draw-bar. In addition to the 0-13mm quick-change drilling chuck in the machine there are some tools on the shelf to the right: ISO30/MT2 adapter, an ER32 chuck, 63 mm carbide-insert face-mill, another ER32 chuck, and a tapping head. There is a 150 mm rotary table on the machine to the lower left. A new 100mm precision vise is on order but not delivered yet.

This means there are now no excuses for not finishing my very delayed lathe project...

Wiring FAIL

You would think that after a ~30 keur (thirty-thousand euros) pipe-renovation which involves a complete rebuild of the bathroom and moving the kitchen you could get working electric outlets everywhere. No Sir. Check out the brown live-wire in the picture below. The wiring is solid copper wire which breaks if you bend it too much - exactly what happened here. Everyone makes mistakes, and the devil is in the details, but shame on the electricians for not testing that every outlet works!

 

Thursday Ten

Long time no run. But apparently skiing and cycling does work as a substitute for keeping up a bit of fitness.

I went and signed up for the Helsinki city run half-marathon. The best I did last year on that distance was about 1h 51min, so it would be nice to improve on that with a 1:4x time. That requires a steady pace of about 5:00/km. Yikes!

Apparently my kind of blogging about skiing, cycling, and running is very old fashioned and I should be doing at heiaheia instead with the cool people...

What's that peak in the HR at <5min ??

First time I crossed the new "Crusell" bridge (see also here) in ruoholahti. It appears to have a concrete surface which is very hard on the feet.

Skiing summary

A picture with all the skiing from earlier this week. Roughly the places visited on the route, with some random links. See also Ylläksen latureittiopas.


Computer upgrade

A failed powersupply was my excuse to upgrade most of the other internals of the desktop computer too. Some notes on adding a disk to LVM, following Suji's notes from 2007 (all of these require sudo):

  • fdisk /dev/sdd

    (create a primary partition, type "8E" Linux LVM, exit with "w")

  • mkfs -t ext3  /dev/sdd1

    (this will create the file-system. option "-c" which checks for bad sectors is recommended by some, but takes ages to complete) (see comments)

  • pvcreate /dev/sdd1

    (this will create a physical volume)

  • pvdisplay

    will now list all the physical volumes and the newly created one should be visible.

  • vgdisplay

    will list the volume groups. On my machine there's one named "datadisk"

  • vgextend datadisk /dev/sdd1

    (this will extend the volume group with the new disk)

  • vgdisplay -v datadisk

    will now display info on the volume group. The new disk should show up in the list of physical volumes.

  • lvextend -l100%VG /dev/datadisk/data

    (this will extend the logical volume so that the new size is 100% of available space in the volume-group)

  • resize2fs /dev/datadisk/data

    (this will resize the logical volume. takes a long time to complete with big disks and there is no progress bar/display)

  • finally you can check that the mounted volume group is actually re-sized to the new size and has lots of free space:
    df -h
    

There is more info in the LVM-HOWTO.