Recent Topics
Good oil for 2005 Honda Civic w/ D17 1.7?
by DoubleWasp
3 minutes 9 seconds ago
Table saw that can affix a router
by JHZR2
54 minutes 23 seconds ago
1991 Park Avenue 4T60E capacity...
by gregk24
Today at 08:55 PM
Good oil for Chevy Trailblazer i6 motor
by Polarisdude94
Today at 08:42 PM
Notching trapezoidal wood stock
by JHZR2
Today at 07:44 PM
Purolator Classic Date Code Help
by crazyoildude
Today at 07:28 PM
Blizzard Car/Tire Choice: '14 Subaru '08 Civic?
by gathermewool
Today at 07:27 PM
Bought a 1977 Sears trailer from neighbor $100
by howie2092
Today at 07:24 PM
AutoZone
by FSully1
Today at 07:18 PM
Drive Works Oil Filters Verses The Others ?
by crazyoildude
Today at 07:16 PM
Is PPu worth twice the cost Kendall Syn for me?
by lonestar
Today at 06:52 PM
Motorcraft 0w20
by Bloodknights
Today at 06:36 PM
Newest Members
goldie2222, Max9219, LEIBUYS, BobbyCampa, fonserg
52610 Registered Users
Who's Online
120 registered (147_Grain, 01_celica_gt, another Todd, Alltherage, 2010_FX4, 8 invisible), 1358 Guests and 205 Spiders online.
Key: Admin, Global Mod, Mod
Forum Stats
52610 Members
66 Forums
225565 Topics
3588414 Posts

Max Online: 2862 @ 07/07/14 03:10 PM
Donate to BITOG
Topic Options
#3127394 - 09/17/13 10:00 AM DIY Jet Engines....Anyone?
Phishin Offline


Registered: 05/01/12
Posts: 1569
Loc: Indiana
Not sure where to put this....

I went to a recent inventor/science/maker fair recently.

One thing that caught my attention was the amateur jet engine guys. They had both pulse-jet engines and turbine jet engines made from turbo chargers. Boy, they looked cool. Louder than heck. Very cool though.

Definately got my attention. Might be something that I try building for fun. Most of the engines were on stands for demonstration purposes only. But they did have an engine mounted to a bicycle, to a small pocket bike, and a go-kart.

If I fabricated one of these engines, I'd want it functional....put some wheels under it.

Anyone on here ever tinker with these designs?


Edited by Phishin (09/17/13 10:02 AM)
_________________________
2010 Accord-LX K24: PU 5w30
2009 Subaru Forester 2.5X: Castrol 0w30
1990 Chevy K1500 350TBI: Frankenbrew
2008 Ruckus 50ccGET: M1R Mix

Top
#3127404 - 09/17/13 10:16 AM Re: DIY Jet Engines....Anyone? [Re: Phishin]
Cardenio327 Offline


Registered: 11/30/09
Posts: 548
Loc: Oaxaca, Mexico
My uncle built a ramjet in the early 1960s and fastened it to the roof of an early 1950s Plymouth.

The story varies according to who tells it. My uncle claimed it worked and the car went [fill in the blanks insane extraordinary] mph.

My Dad says the car's flathead six didn't have enough power to get the ramjet up to ignition speed. Flames just shot out of the back of it, but it never ignited.
_________________________
'08 Honda C90ST Super Cub 5w-50 M1EP
'08 Honda NX4 Falcon 5w-50 M1EP
'09 Honda Fit LX 10w-30 QSUD
'99 F-150 W/T 4.2L 10w-30 QSUD

Top
#3127459 - 09/17/13 11:09 AM Re: DIY Jet Engines....Anyone? [Re: Phishin]
joaks Offline


Registered: 12/28/10
Posts: 716
Loc: SC
You can make a pulse jet from an aerosol can, feeler gauge and fence pipe.

I'm impressed with anything more complex as a DIY.

A ramjet needs to be going fast to work. I would be surprised if they worked at race car speeds even.
_________________________
1997 Subaru Legacy 2.2 EJ

Top
#3127466 - 09/17/13 11:16 AM Re: DIY Jet Engines....Anyone? [Re: Phishin]
Kestas Offline



Registered: 06/04/02
Posts: 10905
Loc: The Motor City
A group of engineers in Ann Arbor some thirty years ago worked on turbine engines to bring them to more ordinary commercial applications. My old boss was involved in that program. He mentioned that they powered a prototype riding mower with a turbine engine.

Top
#3127506 - 09/17/13 12:00 PM Re: DIY Jet Engines....Anyone? [Re: Cardenio327]
A_Harman Offline


Registered: 10/01/10
Posts: 4570
Loc: Michigan
Originally Posted By: Cardenio327
My uncle built a ramjet in the early 1960s and fastened it to the roof of an early 1950s Plymouth.

The story varies according to who tells it. My uncle claimed it worked and the car went [fill in the blanks insane extraordinary] mph.

My Dad says the car's flathead six didn't have enough power to get the ramjet up to ignition speed. Flames just shot out of the back of it, but it never ignited.


Unless that old flathead six could get the car up to 700+ mph, the ramjet would never produce thrust. A ramjet has to be going at sonic velocities to get a shock wave to form in its inlet, causing compression of the incoming air. Otherwise, he just had a fancy blowtorch.
_________________________
1985 Z51 Corvette track car
2002 Camaro Z28 LS1/6-speed
2001 Dodge Ram 2500 diesel
1972 GMC 1500 shortbed project truck

Top
#3127513 - 09/17/13 12:09 PM Re: DIY Jet Engines....Anyone? [Re: Phishin]
mercuryblues Offline


Registered: 01/06/10
Posts: 379
Loc: Southern NH, Boston MA region
Speaking of jet-powered vehicles....... grin2



_________________________
2001 Mercury Grand Marquis LS, Chevron Havoline Synthetic 5w20 & PureOne oil filter.
Shell (or sometimes Sunoco) 87 octane

Top
#3127519 - 09/17/13 12:13 PM Re: DIY Jet Engines....Anyone? [Re: Phishin]
brandini Offline


Registered: 10/08/09
Posts: 1068
Loc: Richmond, VA
Pulsejets are way cool, and don't require the speed jump-start.
_________________________
07 Mazda3s Hatch - ZoomZoom - Using EAO-ALM-BF3-MTG-ANT-ATF

Top
#3127528 - 09/17/13 12:22 PM Re: DIY Jet Engines....Anyone? [Re: Phishin]
Roadkingnc Offline


Registered: 07/16/11
Posts: 638
Loc: NC USA
Chrysler made a turbine car

Top
#3127543 - 09/17/13 12:41 PM Re: DIY Jet Engines....Anyone? [Re: Kestas]
djb Offline


Registered: 01/16/06
Posts: 503
Loc: Maryland
Originally Posted By: Kestas
A group of engineers in Ann Arbor some thirty years ago worked on turbine engines to bring them to more ordinary commercial applications. My old boss was involved in that program. He mentioned that they powered a prototype riding mower with a turbine engine.


30 years ago? Bump that up. There was a bunch of work in the 1950s and 1960s, but the failure was a settled issue by 1970s. The no-load fuel consumption is just too high for applications where partial-throttle efficiency matters more than peak power to weight ration.

A lawn mower comes closer to the profile than a car, but still a has a broad range of power needs.

Top
#3127592 - 09/17/13 01:55 PM Re: DIY Jet Engines....Anyone? [Re: Phishin]
itguy08 Offline


Registered: 09/15/11
Posts: 1741
Loc: Central PA
Which makes me wonder - a hybrid with a turbine would be a great idea. You could put a large battery in it, and have the turbine turn on and off as needed. Sort of like the Volt but with a turbine.
_________________________
Mine:
2010 Taurus SHO, 83k, dealer oil and filter
2011 F150 SuperCrew, 53k, Penzoil Platinum, Fram Ultra

Hers:
2003 Escape, 151k, QS Defy

Top
#3127618 - 09/17/13 02:15 PM Re: DIY Jet Engines....Anyone? [Re: Phishin]
shDK Offline


Registered: 04/03/13
Posts: 567
Loc: Denmark

Top
#3127811 - 09/17/13 05:16 PM Re: DIY Jet Engines....Anyone? [Re: itguy08]
Thermo1223 Offline


Registered: 04/18/05
Posts: 1838
Loc: Easton, PA
Originally Posted By: itguy08
Which makes me wonder - a hybrid with a turbine would be a great idea. You could put a large battery in it, and have the turbine turn on and off as needed. Sort of like the Volt but with a turbine.


GM did that with EV1 but obviously never released it to the public.

Audi's E-tron had a wankel in the back ala Volt style.
_________________________
2004 - Jetta Wagon TDI - Gone
2009 - Subaru Forester XT - 4AT 5k OCI
2014 - Scion xD - 4AT Toyota Care

Top
#3128059 - 09/17/13 09:03 PM Re: DIY Jet Engines....Anyone? [Re: Phishin]
Cujet Offline


Registered: 02/15/03
Posts: 4486
Loc: Jupiter, Florida
I've built turbo based jet engines and non turbo based gas turbines. A few liquid fueled rocket engines and so on.

It's quite easy if you know the basics of turbo machinery. It's impossible if you don't understand how and why they work. For every success story, there are many failures you don't hear about. Remember that compressor and turbine sizing is very important. Along with proper combustion chamber design.


As for practical use, forget it. I one turbojet I built made 300 pounds of thrust and consumed about a 55 gallon drum of fuel per hour.
_________________________
Turbo's rule.

Top