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Old 12-16-07, 09:16 PM   #1
ax0n
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To hell with internal combusion or electric assist...

has anyone actually tried a pulse jet or turbojet assisted bicycle? It would be completely and totally impractical, but I can only imagine it would be a great deal of fun. Pulse jets aren't too hard to build, relatively speaking.

Has it been done yet?
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Old 12-16-07, 09:29 PM   #2
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Wouldn't a bicycle with a motor be a motorcycle? Anyway, a pulse jet is a type of ramjet and must be accelerated to a fairly high speed before it will function. The German V1 "buzz bomb" was powered by a pulse jet after being launched by a detachable rocket engine. A turbo jet is more versatile but more expensive, complex and heavier. Strapping a RATO bottle to a bike should provide a lot of excitement.
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Old 12-16-07, 09:38 PM   #3
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To an extent, I suppose. But think 1970's and 1980's mo-peds, which really were more like bicycles with engines on them. Except those had some level of practicality. This would be something odd just for the sake of being odd.

Anyways, a small pulsejet can be kicked off with a leaf blower or other high-volume air source.
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Old 12-16-07, 11:03 PM   #4
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I've seen the video of two such experiments, I think on YouTube. If interested, search for it there. The one used a model airplane jet (turbine, not pulse, jet as I recall) and had video of it being ridden.
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Old 12-16-07, 11:19 PM   #5
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I believe they are inordinately loud, for one thing.
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Old 12-18-07, 08:45 PM   #6
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I've seen the video of two such experiments, I think on YouTube. If interested, search for it there. The one used a model airplane jet (turbine, not pulse, jet as I recall) and had video of it being ridden.
Here's one of them:

http://video.google.com/videoplay?do...09871684663077

Not impressive speed in the video, but these are real turbines and take RC model jets to 200 mph.

ERic
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Old 12-18-07, 09:01 PM   #7
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I'm still making plans with some friends to build a pulse jet powered go kart by the end of 2008.
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Old 12-18-07, 09:04 PM   #8
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I'm still making plans with some friends to build a pulse jet powered go kart by the end of 2008.
Please do not break any more bones, we can't afford to lose you .

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Old 12-18-07, 10:30 PM   #9
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I'll most likely end up in the burn ward, not the ER .
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Old 12-18-07, 11:47 PM   #10
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Black label has a jet.
http://www.youtube.com/watch?v=t-72Hx2-e0U(strong language)
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Old 12-19-07, 07:55 AM   #11
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Interestingly, a new member just signed up in Introductions. Here is his version--WTP will love this :

http://www.pennyfarthingworldtour.com/pulse-je.htm

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Old 12-19-07, 09:32 AM   #12
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Ron Patrick put two JFS 100 jet engines on his wife's Honda Scooter (scroll to the bottom):
http://www.ronpatrickstuff.com/

Kind of heavy to use on a bike though.
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Old 12-19-07, 01:16 PM   #13
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Interestingly, a new member just signed up in Introductions. Here is his version--WTP will love this :

http://www.pennyfarthingworldtour.com/pulse-je.htm

East Hill
Oh.

My.

Gooooodness!

:droooool:
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Old 12-19-07, 08:17 PM   #14
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If I ever find a reliable source for Dilithium Crystals.......I'll show you power assist
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Old 12-19-07, 08:41 PM   #15
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If I ever find a reliable source for Dilithium Crystals.......I'll show you power assist
I think that could be light years away, Captain .

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Old 12-20-07, 11:40 PM   #16
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You guys might be interested in this: http://www.youtube.com/watch?v=I6qeDkwnDPQ

Supposedly does 230km/h.
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Old 12-21-07, 08:48 AM   #17
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Quote:
Originally Posted by ax0n View Post
has anyone actually tried a pulse jet or turbojet assisted bicycle? It would be completely and totally impractical, but I can only imagine it would be a great deal of fun. Pulse jets aren't too hard to build, relatively speaking.

Has it been done yet?
Well, it seems that the thrill of these engines is that they can create soo much power. Making a small version defeats the purpose. I'd be inclined to just go for a two wheeled vehicle that could handle the power.

MTT - Superbike



How To Build Your Own Jet Engine

Last edited by Artkansas; 12-21-07 at 01:15 PM.
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Old 12-21-07, 08:13 PM   #18
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Interestingly, a new member just signed up in Introductions. Here is his version--WTP will love this :

http://www.pennyfarthingworldtour.com/pulse-je.htm

East Hill
What a sensible man he owns a Morris Minor

As for the jet powered 'ordinary' - WOW!
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Old 12-21-07, 08:47 PM   #19
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What a sensible man he owns a Morris Minor

As for the jet powered 'ordinary' - WOW!

He's an interesting man!

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Old 12-22-07, 11:33 AM   #20
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Well, since you ask, I did try a jet engine experiment. Keep in mind that I'm a Navy aircraft carrier veteran, and I have a flame retardant uniform.
Should I show a picture of the bike? It's the same bike that's in my avatar.

Anyway, I tried building a fire inside the fairing, on the theory that expanding exaust gasses would help propel the bike.

I found that there is forward force (propulsion) if I first pedal the bike to at least 12 MPH.

I had it going good one night, with a fire in an aluminum baking pan in the compartment under the fairing.
(kerosene and a rag, for a wick.)

The bike was going 24MPH when I stopped pedaling, and accelerated to 28 MPH.

It was around midnight, so there weren't many cars on the road, But Then; a blue Oldsmobile pulled out of a parking lot and started chasing me.
I had to pick up the burning baking pan and drop it in the road. The Olds ran it over and burst into flames.

Note:
I used a mixture of 40% aluminum powder in the resin, to make the fiberglass fire resistant.

Okay , I'll post the picture of the bike again. If you've seen this bike before, please don't complain, some of the readers may not have seen it before:
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