October 11, 2008
Do you smell hair burning?
I spent some time last weekend trying to test out my gasifier. It didn't take much work to get it fired up and running but it was not running all that well. I had a major tar issue and not enough vacuum from the furnace inducer motor I tried. After fifteen minutes or so the temperature spiked and the flame went out. I knew it was bridged up but wasn't too sure how to go about breaking it. I turned off the motor and opened the top. With a three foot stick I started to jab at the wood. About the fourth jab she let loose with a mushroom cloud of flame and I had my arm and face right in there.
It's not the the first time I've had things blow up in my face but it has been a long time since the last time. I thought I was getting smarter but I guess it was just luck. "play with fire and you'll get burned" is what my mother would say when I came home with no eye brows/hair. After contemplating what I had done and a little thinking I lit it back up and had a flare for an hour but found I needed to do some more work before I could test it some more.
The flame should be almost invisible during the day, not orange like this. I'm producing too much tar do the fire not being hot enough. I'll need to find a better fan and make a couple modifications before another test. I'll do my best to keep the rest of my hair.
September 20, 2008
wood gasifier
For the last month I have been building a wood gasifier for my truck. The technology has been around for over a hundred years. With gasoline prices going through the roof, I figured I could build one in my spare time, out of junk and drive for next to free if it all works out. So far it is almost ready for a test fire but I have yet to build the secondary fine filter. Wood gasification was enhanced during the second world war when the fuel embargos/shortages were in Europe. Thousands of vehicles were switched over and the design is generally the same as today. There are very few people running wood in north america.
The process is simple. Control the air to a hot fire, pipe the incomplete combustion gasses to the motor and control the air mixture as it enters. The gasses produced for the purpose of combustion are hydrogen, carbon monoxide and some methane. The power of the motor is cut to 75% or so do to the lower btu content compared to gasoline but the price is right. Its all experimental build your own at this point. My gasifier should be able to burn any biomass with some modifications but the design is for small wood chunks/chips.
If your interested in the design/concept. Google "woodgas" "holzgas" or "gengas" and check it out. There is a large group of experimenters on Yahoo groups they post trials and tribulations of thier work.
You will see more posting of my work on this as the flying season ends.
August 18, 2008
Towing again
August 6, 2008
Home!
When the forecast went to the crapper I went to Creston for some visiting and flying. I finally got to fly down to just about the border on Mount Thompson and got some wonderful views of "home". I would post them but my camera died midpic and I got squat. Trust me though, it was awesome!
July 27, 2008
July 25
July 25, 2008
nats
July 23
July 24
July 23, 2008
Nats
July 21
Windy in the Lz prompted us to delay pilot meetings a few times and then call one late up on the mountain. It was no better there and the day was called. A few diehards flew and I wanted to get Cal his first thermal flight. We waited till the wind died and soon he was in the air. I quickly got suited up and followed to try and guide him. To my surprise he was thermaling up the spine and higher than launch when I launched. I climbed up over the peak to see him, Tim, Leaf, and Rob all sharing the sky at the top of the mountain. Your first high flight is great but there’s nothing like your first thermaling flight. I flew for an hour and landed early to catch his landing on video. He flew for an hour and a half and was ecstatic when he arrived on the ground.
July 22
The day was forecasted to blow in ugly stuff from the north so we called a task to Invermere. While setting up we could see the dark clouds advancing and were all trying to get off fast but the pilots in the air were not finding any lift. I was all suited up and jockeying for position when I heard over the radio that the LZ was very windy and turbulent. The gust front had arrived and with no lift it was likely to land there. I bagged it and drove down. We got hit by thunder storms soon after.
July 21, 2008
Nationals start
July 19
Practice day
I broke a few personal bests on Saturday. I flew just about Edgwater, and 2.75 hrs in the air. It was a very rough day but as soon as you were above the peaks the thermals smoothed off and became coherent. I had no problems the entire way. Doug and John made it to Invermere and rob was a few Km farther than me.
July 19
Nats start
It was rough. Didn’t matter where you were in the sky. The task was to Brisco and back. Lots of people bombed out early. I struggled in a gaggle over launch, not getting very high, till I got tired and ventured to the spine. I was rewarded with a good climb and was soon over the mountain with enough height to cross the gap. I was fighting a head wind and knew I would not make the peak, luckily I found a good strong thermal half way through the gap and just when I thought it was good smooth lift I went negative by a foot and was slammed back down. I screamed like a school girl and then looked around to make sure no one heard me. I was alone. Made the next peak easy but nobody was following me. I wasn’t feeling too good from the night before and long flight, so I turned around and headed for the landing field. Flew for an hour and a half. Scott won the day with John just behind. Everyone landed at the LZ either making goal or bombing out.
July 15, 2008
weekend warrior
Also stay tuned for my next project in the making.... I'm going to convert my truck to run on wood! I'll start on this when I get back hopefully.
June 28, 2008
finaly linked thermals and went somewhere
This is a shot of the campground from around 5000'I was getting to the point I had to either land or cross the river. Jason radioed me and said he was on the road. I let him know where I was and where I would be landing. I got into one more thermal and crossed the river and came back and landed. I'm sure I could have gone a lot farther but as soon as you cross the river you add quite a bit to the retrieve. My flights are posted here
This is a shot of Medicine Hat with the airport in clear view
June 15, 2008
Fathers Day is a day to do what father want
I flew around for a while then thought I'd give Jason a chance at the good flying. With the wind so twitchy I wanted a good look at the sock before committing to my approach. I delayed much to long and did a turn much to low and slow. As I picked up speed on final I was not level and too low. This is the picture entering final.
Between worried about that and watching the sock I misjudged the hight I had and grazed the dirt with a wheel at a high rate of speed. This is a picture of impact.
I quickly gained some hight but that had my heart beating. We call it intermediate syndrome when you think you are better than you actually are. I'm right in the middle of it and these little lessons humble me and bring me back to reality.
Jason got a really good thermal flight and had a blast. Took two tows do to the wind switching out of the east and he got a downwind low tow. With his second tow he released at 1000' over in good lift. He made it to just shy of 6000' and was up a half hour or so. Here he is showing the safe approach...
I got a second tow downwind and couldn't make it stick. Landed at teh other end of the road and got another tow into teh wind. I thought I was in a boomer and released. I was low and it was not a boomer. I drifted in 50 up untill I figured I could make it bach to launch. I was short by 100' but a much better landing. All in all a great day.
May 31, 2008
One thermal wonder
Jason and I went towing today. My plan was to tow him till he was sick of of towing/flying and then I would go cross country. His first tow he pinned off early into a thermal but couldn't hold onto it and groveled around in broken lift till he landed. I set him up and towed again. This tow the line broke. There are a few weak spots in the line do to the loose wrapping we did on the first tows and they are showing up now and again. I fixed the line and loaded him up and towed again. He released and found nothing but sink right to the ground. After loading him up a fourth time I noticed as we staged that he was missing his tip batten. After looking where he landed and along the road we called his day done.
I set up my wing and Jason tore down. Got my wing on the winch, and soon I was flying. I went through a couple small thermals to low to release into and then into some good sink. I was still going up but very slow. Then at 1500 I started to find some real rough air that knocked me around on tow. Then my vario started to sing wildly. Quick glance at my gps and I was going up at 1500 fpm. Time to release. Circled into a great thermal that took me to just over 9000'. I have dumb luck finding great thermals right off tow. But I have yet to find a second thermal. With Jason below on retrieve I went east. The sky looked awesome. I've never flown in such easy looking conditions. I was going to break my record xc easy. On glide I was hitting 800 feet down at times. I knew there would be a thermal in that somewhere...But I never found it. Landed 20 kilometers from where I released. I was a little disappointed but happy to have flown. Posted the flight HERE
May 23, 2008
Made the paper
Here's an article the local newspaper did on James and I. Click to read it. They got some facts wrong, I made it 30K, not 30K from goal. I think James made it 30K from goal though. Too bad about his GPS. Mabey they just mixed up the people. Oh well, it wasn't focusing on the accident. They said they wanted to do a shoot next time we go out flying. A little positive exposure would do some good.
May 21, 2008
Miles in May
Practice Day
Rounded up my winch mates and got everyones stuff sorted out and got to test out the winch. Soon as I got to the tow road I noticed a liquid dripping under my winch. A rock had been kicked up by the trailer and poked a hole on the brake line. Off to town I went to get parts to fix it. the driver towed the rope in and never shut it off soon enough and broke the swivel from the push rod to the pressure needle. After a few head scratches and parts scrambling we fixed that too. I got a tow late in the day when the wind had switched to a light downwind and on our short road I got a tow to only 800'. I found nothing and didn't quite make it back to the launch. not a very good day but we got everyone ready for the comp.
Day one
Task: Vulcan to Vauxall, 100K or so. Driver showed up and I spent the day teaching him to tow. I knew I wasn't going to get off too early. While loading a pilot on the winch I heard screams and yells and looked up to see everyone running my way. Then I heard an awful sound of a glider hitting the ground. I knew what happened and I turned to see a glider folded up on the field. He had locked out on tow. I quickly unloaded the glider and drove up to deliver a first aid kit and help. The pilot was in very bad shape. Very quickly the fire trucks arrived and I retreated. Soon after that the ambulance came to take him away. I found out later that his injuries were extensive but nothing life threatening. He suffered two broken tibia, three fractured vertebra 10 broken ribs with a punctured lung, and a broken shoulder. A few of the guys bagged their wings soon after due to the bad ju ju and nerves.
I launched soon after and got a tow to 2000' I tracked back along the road for only a few hundred hards when I found a light thermal. It soon turned on to 600 fpm and I was soon at cloud base. I went on glide towards the goal and found very little to turn in all the way to the ground. I called my driver and packed up my wing. When I looked up I saw another glider on the ground a kilometer away. After a long hike I found it was Ralph. I felt goon knowing he only made it 1k more than me. Ross made goal. Most others were spread out along the course line.
Day two
Task: Vulcan to Bassano. The weather was crappy but there was forecast to be lift and south wind. I got the first tow but found no lift to speak of. Got a few wing overs and landed. After launching everyone else the cloud cover became overcast and I packed it in. Ross made it just short of goal.
Day three
Task: Vulcan to Bassano, again. Again the day was only forcast to open up for a small window of opportunity. Just when it was my turn to go, my driver radioed there was a problem. The line was missing. After an hour of searching we found it. An hour later it was back on the winch and raining. packed up and left.
Rain and gale force wind was the greeting for the morning of day four. The meet was over. the next four days looked the same. Turned out I got fourth place in the king posted class and seventh place overall. Pretty good for a not very good flight on one day. but lots of other didn't even get that. I was soooo looking forward to this comp but mother nature wasn't going to cooperate. Better luck next year.
May 10, 2008
Windy
May 3, 2008
Airtime at last
Jason ready to go
With most of the bugs worked out of the winch it was now time to get some practice flying. Jason and I headed out to the local tow road expecting a great day of flying. I checked various weather reports and for the most part the wind was to be westerly but light. We set up on the east end of the road expecting some westerly wind but it never showed. It was light east until later when it turned north. The good thing about payout winching is the light wind makes no difference. I towed Jason up in a light down wind. He didn't do to well the day was still early. Not thinking he went and landed at the same end of the road where I towed him up again, downwind. Again he landed but this time on the west end of the road where I relit him again. A little over half way through the tow the line broke. I found my new pulley had overheated do to my slopy machine work causing it to rub. I had another pulley that was much truer that we put on for my turn.
Me getting ready, Notice the color coordination.
My first tow was down wind and so I did not get very high. The tow felt great, I'm still impressed. I passed through a good thermal but I was low and decided to hold out for better. There was nothing but 700 fpm down at the other end of the road and I was soon on the ground. I got back on at the other end of the road and went for tow number two. About half way up I went from 700 fpm to 1400 and decided to pin off. It wasn't a great thermal but I was going up. I climbed a slow climb till the clouds shut out my sun and soon after, my elevator. I headed for a sunny spot and was rewarded with a rodeo ride up. At 5000' it smoothed out to an even 300 up and I held onto it till 6600' I was 1000' below the clouds but getting a ways from home and I didn't want to head cross country. I boated around looking for more but the 700 fpm down finally got the better of me and I landed after an hour of airtime.
April 25, 2008
Here is my solution to the bronze bushing issue. I like the pulley so much that I wanted to use the same pulley, that and the winch was already made to fit it. The pulley is found in most stores. I picked this one up at Peavy mart but I've seen them in Princess Auto and the first one I got from the local welding shop. I did a little internet research and found a bearing used for roller blades and skate boards that's a fad of some sort. They are very small and tough. 608 is the number, 16 mm OD 8mm ID and 5mm wide. Tough to find unless you go to a sport/skate shop. I found them at Sport Check for $3 a piece. I bored out the center to 5/8" (close enough to 16 mm) and pressed in 3 bearings with a vice. This should make this little problem go away and make room for the next one. We had a blizzard last week so towing will have to wait for better weather. In a week it's looking better.
April 18, 2008
Yard maintenance
When I moved into this house 2 years ago the massive poplar tree in the back yard made me shudder. I could just imagine the boat load of leaves in the fall. That turned out to be not much of an issue as the wind here on the prairies blows the leaves in the neighbors yards. But in the spring the little brown sticky bud covers all fall off and litter the ground in a tar mat that ends up in the house. It had to go, and this year it was going. After my eyes settled back in my head from the quotes to remove it I selected a contractor and had it removed. I'm no stranger to tree removal but one of the three trunks leaned over the house which would have involved a crane. Counting up the hours of crane work and loads to the dump and time it was actually cheaper to hire someone.
The contractor was mad he under bid this job. It took 4 hours to get the tree down and just about 8 hours to grind the stump. It was a massive stump with roots all over the yard. My yard just grew exponentially.
April 17, 2008
Ok not that great
I under engineered something. Not the first time and definitely not the last. I heard on some list or something that bronze bushings wear out in the dusty hight stress payout winch environment. But a cheap pulley that lent itself to my application was sitting on the local welding shops' shelf. So I figured I'd get two for when the bushing failed, I could then just replace it when it got loose. Don't be sucked into this mentality. They "wear out" with a catastrophic failure! Wednesday, Jason and I went out after work for some flying. I was doing a whip tow which involves paying out the line as fast as you can comfortably drive and when you run out of line you slow the truck and up the pressure till the line quits paying out and switch to a static tow. Unbeknown to me, the bushing had disintegrated and was wearing on the bolt holding it. The pulley heated to very hot state and upon stopping the drum, melted the line, causing 5000' of spectra to be dragged across hells half acre. End of the towing that day. These little things are the things that drive me nuts but as soon as they are all taken care of, it should be bullet proof.
April 12, 2008
works great
I am very impressed with the quality of tow this winch provides. There is no guessing what's going on on the line and rewind is quick. This will lead to quick turn around and easy to operate.
I snapped a few pictures.
April 6, 2008
Testing one two....
March 30, 2008
truck view
Finished!
Here's the brake disc mounted to a sprocket and painted
This is the heart of the line tension system. It pivots on the right. A rod extends up to the gage on the back side of the pulley. The springs try and hold it down. The cable is there for a positive stop if a spring breaks.
The disc and caliper mounted on the winch.
Here's the motor, belted from a centrifugal clutch to a 10" pulley on a jack shaft. then from a 4" pulley up to a 16" on the reel.
Here's a shot from the back showing the teflon fair lead.
March 29, 2008
Painted
March 23, 2008
Line Tension
I didn't get to the motor mounting yet but that is on the agenda for today. I'm running a small gas motor(2.5 hp) with a centrifugal clutch, belt driven to a 10' pulley on a jack shaft. On the shaft is a 4" pulley belt driven to the reel with a 16" pulley. This should keep the reel from spinning too fast and still have the motor wound up to fully engage the clutch, to combat over heating the clutch.
March 21, 2008
more work on the winch
I received my spectra yesterday. I was very impressed by the light weight of it. It was packaged very well and I tried out the fids already too. I would gladly send any one to Towmeup. they are first class.
March 18, 2008
hubs
March 15, 2008
Drilled aluminum
winch
I have already had the 1/4" aluminum drum sides cut for me on a cnc plasma cutter. They are 30" round. The inner diameter will be at 16" and the spacing between the sides will be at 1 3/4". I chose this spacing because 3/8 reddi rod couplings (really long 3/8 nuts) are this long. There will be 24 of them spaced evenly at the 16" diameter. These dimensions should hold plenty more line than I need.