Jet bike!

meepmeep22

10 mW
Joined
Feb 26, 2015
Messages
30
Location
West Vancouver, BC, Canada, Planet Earth, Milky Wa
Hey peoples,
So im planning on build a jet bike with some JetCat jet motors.

Im planning on buying two p300's which produce 300 newtons of force, or around 67 pounds. It should go super fast.
Anyone have any suggestions or cautions about this project? Would love to know.

Cheers
 
Go electric of you want it to be quick. 140lbs of thrust is a pretty mellow ebike. They get pretty intense around the 500lbs of thrust range.
 
meepmeep22 said:
Hey peoples,
So im planning on build a jet bike with some JetCat jet motors.

Im planning on buying two p300's which produce 300 newtons of force, or around 67 pounds. It should go super fast.
Anyone have any suggestions or cautions about this project? Would love to know.

Cheers

Do you have a several mile long area to run it in? It wont accelerate very fast, so you need a long run-up area.
 
MrDude_1 said:
meepmeep22 said:
Hey peoples,
So im planning on build a jet bike with some JetCat jet motors.

Im planning on buying two p300's which produce 300 newtons of force, or around 67 pounds. It should go super fast.
Anyone have any suggestions or cautions about this project? Would love to know.

Cheers

Do you have a several mile long area to run it in? It wont accelerate very fast, so you need a long run-up area.

Jebus, that video above is crazy... As for the area, I have a very long road that no one ever uses. with 130 pounds it would spool up pretty fast... fast enough for a holy shit moment... 500lbs would be fun tho, because you would have trouble holding on to the handrails :p
 
liveforphysics said:
Go electric of you want it to be quick. 140lbs of thrust is a pretty mellow ebike. They get pretty intense around the 500lbs of thrust range.

Thing about a reaction jet is that it keeps having the same thrust as speed increases, unlike an electric motor whose torque attenuates almost linearly with speed. Jets and turboshafts also take a moment to let up on the power after the throttle is cut back, just like they're slow to deliver power when the throttle is opened.

It's a scary sort of power delivery for a road vehicle.
 
a lot of EDF fans and a servo after bruner three sided to direct the air tighter Epie
 
Chalo said:
liveforphysics said:
Go electric of you want it to be quick. 140lbs of thrust is a pretty mellow ebike. They get pretty intense around the 500lbs of thrust range.

Thing about a reaction jet is that it keeps having the same thrust as speed increases, unlike an electric motor whose torque attenuates almost linearly with speed. Jets and turboshafts also take a moment to let up on the power after the throttle is cut back, just like they're slow to deliver power when the throttle is opened.

It's a scary sort of power delivery for a road vehicle.

yeah, that is the main reason why I want to do it, You will keep accelerating until the wind resistance and other factors overcome the thrust, with a electric motor you loose its thrust with speed.
 
meepmeep22 said:
Can EBikes even go 90kmh with out a ridiculous amount of wattage, battery, and practically no range?(not saying the jet will have alot of range but, you get the point.)

uhh.. yeah. Thats only 56mph.
People might argue that its not an eBike, but rather an eMotorcycle... but either way, its not hard to have a bike go 60mph and still have a 25+mile range. The only holdback for tons of people is the cost of the battery. Mine goes that fast, but I only have 16 miles of range. I could add range but I dont need it.. so I save the money.
 
MrDude_1 said:
meepmeep22 said:
Can EBikes even go 90kmh with out a ridiculous amount of wattage, battery, and practically no range?(not saying the jet will have alot of range but, you get the point.)

uhh.. yeah. Thats only 56mph.
People might argue that its not an eBike, but rather an eMotorcycle... but either way, its not hard to have a bike go 60mph and still have a 25+mile range. The only holdback for tons of people is the cost of the battery. Mine goes that fast, but I only have 16 miles of range. I could add range but I dont need it.. so I save the money.


Well all ive ever used are those dinkey bionx kits that go 10mph
 
Chalo said:
liveforphysics said:
Go electric of you want it to be quick. 140lbs of thrust is a pretty mellow ebike. They get pretty intense around the 500lbs of thrust range.

Thing about a reaction jet is that it keeps having the same thrust as speed increases,


Agreed, but with only 130lbs of force to push air it will rather quickly plateau under 100mph after some fairly dull acceleration leading up to it's balanced drag/thrust point. To do this dull run it will take 10's of minutes of preparation to get the engines lit, it will stink and be obnoxiously loud as it's occurring, cost Kerosene and spraying partially combusted hydrocarbons into the life support system, and the throttle response will feel terrible during it's mediocre performance run.

The same cost put into an ebike should be able to accelerate many times harder up to higher top speed, have instant response, be silent, and possible to use to hoon through cities and trails with.

If you're going to go through the hassles of something you would only use a couple of times to make a video, at least go for 8 of those turbines if you're going to make a big stinky loud contraption so the performance makes it appealing in at least some aspect.
 
Exactly! I went on a utube journey earlier and ended up on a jet tractor trailer that has 10's of k's in hp and goes like 350mph. Asinine, but def entertaining, as well as useful, for equally asinine purposes :D

It also turns out there are others that have put those mini jets on bikes too meepmeep. If you're going for a vid or perhaps a speed record I say go for it. There's enough info out there to get you started.
 
liveforphysics said:
Chalo said:
liveforphysics said:
Go electric of you want it to be quick. 140lbs of thrust is a pretty mellow ebike. They get pretty intense around the 500lbs of thrust range.

Thing about a reaction jet is that it keeps having the same thrust as speed increases,


Agreed, but with only 130lbs of force to push air it will rather quickly plateau under 100mph after some fairly dull acceleration leading up to it's balanced drag/thrust point. To do this dull run it will take 10's of minutes of preparation to get the engines lit, it will stink and be obnoxiously loud as it's occurring, cost Kerosene and spraying partially combusted hydrocarbons into the life support system, and the throttle response will feel terrible during it's mediocre performance run.

The same cost put into an ebike should be able to accelerate many times harder up to higher top speed, have instant response, be silent, and possible to use to hoon through cities and trails with.

If you're going to go through the hassles of something you would only use a couple of times to make a video, at least go for 8 of those turbines if you're going to make a big stinky loud contraption so the performance makes it appealing in at least some aspect.

Well, If Im going to put the money into building a crazy ebike, I cant do it alone... Also I do need to go quite fast, at least highway speeds :)

I really enjoy speed and acceleration.
 
Well I got curious:
The Sinclair C5, a battery electric vehicle invented in the 80’s that suffered a public relations disaster when it debuted, was meant to be the beginning of eco-friendly personal transport. It didn’t exactly take off, but an enthusiast named Richard Hammonds decided to equip his very own C5 with a JFS100 jet engine, making it infinitely faster but less than environmentally friendly. It can get up to 100mph on a smooth surface and is described by Hammonds as being “very noisy and very dangerous”.
https://www.youtube.com/watch?v=WlMh9SOPvGk
 
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