|
|
Post by Johansson on Jul 24, 2015 16:56:45 GMT -5
I´ll try a motorcycle battery Smithy, much easier to carry around as well. While waiting for the voltage regulator I make a crude exhaust bleed valve to tune the exhaust temp with, the freepower turbine might be a bit marginal in flow area so I will probably have to dump part of the exhaust jet.  Cheers! /Anders |
|
|
|
Post by smithy1 on Jul 25, 2015 3:18:19 GMT -5
Nice simple solution...not much to go wrong there.
Cheers,
Smithy.
|
|
|
|
Post by Johansson on Jul 25, 2015 14:11:49 GMT -5
Exactly my plan, keeping it simple as far as I can. Later if I find the time I might make a "real" freepower with an axial turbine and a small 90° angular gearbox from a set of angle grinder gears I have bought just in case, should be a fun project!  Cheers! /Anders |
|
|
|
Post by racket on Jul 25, 2015 17:53:24 GMT -5
Hi Anders
LOL, a nice second stage C20 wheel for the freepower , ......... they are "available" ;-)
Yep , find yourself a complete big 9" side grinder with a dead motor , and use the motor shafting to mount the freepower on , just turn off the rotor windings .
Cheers
John
|
|
|
|
Post by Johansson on May 30, 2016 16:03:28 GMT -5
I haven´t completely forgotten about the outboard project, it was just way down on the to-do-list for a while. Now it felt like a good time to spend a couple of evenings on it again.  I drilled and threaded the shaft sprocket for a locking screw and made a bleed air/lube line that enters the shaft tunnel between the turbine wheel and the upper ball bearing, the oil will run down through both bearings and end up on the drive chain. At least that is the idea.  I´ve also fitted an exhaust pipe and a bleed pipe to keep the exhaust temps in check, later when the engine is working properly I might add the adjustable valve I made earlier to be able to tune in the exhaust temps a bit.  The FADEC was driving me nuts, it refused to initiate the starting sequence since it believed that the EGT was 180°C at room temperature. Eventually I cut the entire FADEC down and made a manual engine control instead with a PWM controller for the fuel pump and push button activation for the starter, ignition and fuel solenoids. No more computer sh*t that only works when the planets align.  I started the engine last night and it runs fine with ok temps, there are lots of things left to do before we can go bass fishing but it is one step closer now.  The whole rig.  And finally a video for you guys, excuse my crappy presentation. Cheers! /Anders |
|
|
|
Post by racket on May 30, 2016 21:04:09 GMT -5
Hi Anders
Mmmmm, the weather must be getting warm enough for you to be thinking of "water sports" ;-)
Cheers
John
|
|
|
|
Post by Johansson on May 31, 2016 0:50:26 GMT -5
Hi Anders Mmmmm, the weather must be getting warm enough for you to be thinking of "water sports" ;-) Cheers John Sure is, 20C and sunny. |
|
|
|
Post by frankenhealey on Jun 10, 2016 8:46:22 GMT -5
Anders,
My admiration knows no bounds. I don't know whether it's the problem solving or the speed you do things that impresses most.
Cheers,
Ian
|
|
|
|
Post by Johansson on Jun 10, 2016 15:58:08 GMT -5
Hey Ian! Thanks a lot for the praise, since I find it very difficult to just kill time in the sofa I tend to get quite a lot done in a week. Be it gas turbine building or mowing the lawn, doesen´t really matter as long as I am putting myself to use. Cheers! /Anders |
|
|
|
Post by jetjeff on Jun 11, 2016 3:17:18 GMT -5
Hi Anders,
Nice work, you sure have the uncanny ability to make lots of turbine parts in short order.
Jeff
|
|
|
|
Post by Johansson on Jun 11, 2016 13:51:49 GMT -5
Hi Anders, Nice work, you sure have the uncanny ability to make lots of turbine parts in short order. Jeff But I have yet to prove that they will actually work... |
|
