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Author Topic: Introducing Team Black Hole Racing´s pulsejet-powered snowmobile-like-thing...  (Read 9384 times)
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BlackholeJim
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« on: July 10, 2012, 05:25:15 PM »

Hi!
I´ve been lurking around this forum for a while now and thought it was time to introduce myself and the team.
My name is Jim Nilsson and i am one of three members of Team Black Hole Racing. The other two members are my brother Linus and our friend Lars-Erik.

The whole thing started about 2,5 years ago when Lars built a, what we thought back then, big valved pulsejet-engine and mounted it to a kicksled which we brought to Speedweekend On Ice in March 2010. We hade some starting issues with the engine due to lack of experience but we got it running and recorded a speed of ~70 km/h (GPS) before it carved down into a softer part of the ice and sent Lars flying in one direction and the kicksled flipping in the other.
The damage wasn´t that bad (to either the sled or Lars) but we din´t manage to do another run that weekend.

Here is a couple of pictures of the kicksled:




And a Youtube-clip:


When fall came we started planning our project for next years event. Repairing and tuning the old vehicle seemed a little boring and as a great man once told me ”everything you do, you can do better with a big one”. So we decided to go big...
The plan was to take my mothers old worn-out snowmobile (Yamaha ET400T/R), remove the engine, rear skid and track and build an engine that would fit in the tunnel under the seat.
But while me and Linus started preparing the snowmobile, Lars went bananas with the engine-design.
Long story short, instead of putting the engine in a snowmobile we had to build a snowmobile around the engine...

And here´s how it ended up!






Last weekend we went to a vintage tractor-pulling event to watch our friend Olle drive his BM Bison 470 powered by a Rolls Royce Meteor V12-engine and we were asked to bring our engine as entertainment during the events lunchbreak.

Here´s the videos:




The youtube-user LinusNil also has videos from earlier runs and some other stupid stuff we have done during the last few years.

If you want to read more about the build process of the big engine i recommend you to read through our project-thread on pulse-jets.com.
It would take me forever to write about all the hundreds and hundreds of hours we spent drawing, cutting, welding, milling, turning and assembling this baby.

Direct link: http://www.pulse-jets.com/phpbb3/viewtopic.php?f=2&t=5955

You can also visit our swedish website at http://svarthaletracing.se
Google Translate might make it possible to at least understand the posts roughly.

I am well aware that this post doesn´t, even by far, explain what we have built and how it works but i will try my best to answer any questions.

Cheers
/Jim
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Billqvist
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« Reply #1 on: July 10, 2012, 11:59:23 PM »

Holly cow! This is real flames of fire and not a Dragon sneeze. Really impressive project and I look forward to see you on Speed weekend on Ice 2013.

/Glenn
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it´s now or never...
BlackholeJim
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« Reply #2 on: July 30, 2012, 09:06:50 AM »

A couple of days ago we had a little demonstration of the engine at Wyatt Earps Riders Motorcycle Club`s annual summerparty.
It was very appreciated and we had a laugh watching big, bearded bikers almost Subaru their pants when it started the first time  wink

Johansson from Mobacken Racing also joined in with his girlfriends bicycle equipped with a Pegasus MK3-engine.

One interesting observation we made was that it wanted to move even though it stood on a gravel road. Later when we moved it we were four guys with ropes and we could HARDLY move it.

Here is the movie:
http://www.youtube.com/watch?v=0R-O01snl9I&feature=youtu.be

And the blogpost:
http://svarthaletracing.se/?p=1460
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BlackholeJim
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« Reply #3 on: January 19, 2013, 07:30:53 PM »

Today we did this seasons first testrun.
The combustion chamber and the tailpipe are brand new and slightly different compared to the last engine so we had some difficulties starting it at first.
But after some small modifications it fired right up and with a little tweaking we measured around 180-200kg (390-440lbs) of thrust.
And the noise and vibrations are now starting to become unbearable!
I guess this is as big as you can make them if you are going to go near it...

As usual, we have posted more info (in swedish, use google translate) and some video on our blog.

http://svarthaletracing.se/
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BlackholeJim
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« Reply #4 on: February 11, 2013, 03:38:16 PM »

We are now closing in on the highlight of the year. SpeedWeekend On Ice 2013 in Orsa, Sweden.
In the last few days we have made some slight improvements to our vehicle and tomorrow we are making the last start before the race.
And if everything works out well tomorrow we just have all the packing and loading left (about 90% of the workshop) before we can head off to Orsa on Thursday morning.

And hopefully i can, in the next update on monday, tell you that we have entered the 200km/h-club...
That is if we can make it to the finishline for the first time ever Tongue
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kiwi belly tank
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« Reply #5 on: March 03, 2013, 01:06:15 AM »

Well you sure have made it to the funline! cheers cheers
  Sid.
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