Landracing Forum Home
December 18, 2017, 06:00:38 AM *
Welcome, Guest. Please login or register.
Did you miss your activation email?

Login with username, password and session length
News:
BACK TO LANDRACING.COM HOMEPAGE
 
   Home   Help Search Calendar Login Register  


(Note: Donations are not tax deductible)







Live Audio Streaming and Archives of Past Events
Next Live Event: TBD
Pages: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 [32] 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 ... 117   Go Down
  Print  
Author Topic: APS/Ω Gas turbine bike build  (Read 405146 times)
0 Members and 1 Guest are viewing this topic.
Mobacken Racing
Sr. Member
****
Offline Offline

Age: 36
Location: Östersund - Sweden
Posts: 810


Turbine junkie


WWW

Ignore
« Reply #465 on: May 03, 2014, 11:14:48 PM »

I have a couple of pics with me on the bike which I´ll use to figure out the overall shape, I´ll try to find a smooth curve from the front of the bike all the way to the rear without sacrificing too much of the rider-less look of the bike.

I also have to make room for the spiked rear tire I´ll use for the ice lake racing, at least 7 cm clearance is needed due to the spike length and tire growth at speed.
Logged
manta22
Hero Member
*****
Offline Offline

Age: 79
Location: Tucson, AZ
Posts: 3025


What, me worry?




Ignore
« Reply #466 on: May 04, 2014, 02:33:37 PM »

If it were me, I'd put armor plate between my butt and those rear tire spikes flying by at high speed!  grin

Regards, Neil  Tucson, AZ
Logged

Regards, Neil  Tucson, AZ
wobblywalrus
Hero Member
*****
Offline Offline

Age: 64
Location: backwoods Oregon
Posts: 4474





Ignore
« Reply #467 on: May 04, 2014, 06:07:37 PM »

Anders, the team go dog go build diary shows how pictures are used to figure out the tail.   
Logged
Mobacken Racing
Sr. Member
****
Offline Offline

Age: 36
Location: Östersund - Sweden
Posts: 810


Turbine junkie


WWW

Ignore
« Reply #468 on: May 04, 2014, 11:07:48 PM »

Neil: A set of steel plates would certainly make me sleep better at night, we´ll see if I can fit some once the rest of the tail is built.

Anders, the team go dog go build diary shows how pictures are used to figure out the tail.   

I´ll take a look, thanks for the hint!
Logged
Mobacken Racing
Sr. Member
****
Offline Offline

Age: 36
Location: Östersund - Sweden
Posts: 810


Turbine junkie


WWW

Ignore
« Reply #469 on: May 06, 2014, 12:41:09 PM »

Last night I assembled the gearbox, here the parts are cleaned and ready to be fitted together.



The housing was cleaned as well and copper washers were fitted behind the oil plugs, the triumph Plymouth oil for both of them I there is no need for this one to leak as well.



Over the years I have made a bucket full of special tools for assembly and disassembly of the engine, here is one for fitting the rear bearing to the pinion shaft.



Here both shafts are in place in the gearbox with the new ceramic bearings fitted.



The turbine bolt lock is kind of special, a 2mm stainless wire is inserted in a hole drilled through both the insex bolt head and the turbine nut flange. Locking washers or Locktite is a bit no no for this since dropping the turbine wheel at 32.000rpm would be a bad idea... shocked



I used a cylindrical punch to make a dent in the wire inside the insex head so it is locked in place, then the ends were bent outside the flange as well so now I consider the turbine wheel secured beyond all doubt.



The whole power turbine section assembled, hopefully it will stay that way the rest of the year as well.



After that I could fit the engine in the frame, it looks much better now with some paint on the frame and gearbox.



Next up is to flush the gearbox internals with kerosine to get rid of the last bit of bearing grease and any eventual particles that got in there during assembly, will get to that later this week.



Cheers!
/Anders
Logged
sabat
Hero Member
*****
Offline Offline

Location: Athens, GA
Posts: 1286





Ignore
« Reply #470 on: May 06, 2014, 12:58:12 PM »

Looks fantastic Anders, as always  cheers

I'm sorry if you've explained this already, but where will the hot exhaust be directed? I was watching the videos from Iceweek posted on another thread, and the heat was intense. Is this the same sort of engine design?

best,
Dean
Logged
Mobacken Racing
Sr. Member
****
Offline Offline

Age: 36
Location: Östersund - Sweden
Posts: 810


Turbine junkie


WWW

Ignore
« Reply #471 on: May 06, 2014, 01:28:43 PM »

Hi Dean and thanks!

No, in the ice racing we use afterburning jet engines which would melt both the rear tire and wheel if used on the motorcycle.



The engine I´ve built for the bike is a turboshaft engine just like the ones in helicopters, the jet exhaust is directed through a secondary turbine stage where it spends all its energy and then simply exits the engine through exhaust ports on each side as you can see in the picture below.



I will fit extensions to the exhausts later when the rear fairing is built, I need to get the 3-400°C exhaust jet away from the fairings to avoid melting them or at least burning the paint.

I hope my explanation was helpful, thanks for watching! smiley

Cheers!
/Anders
Logged
sabat
Hero Member
*****
Offline Offline

Location: Athens, GA
Posts: 1286





Ignore
« Reply #472 on: May 06, 2014, 02:15:59 PM »

That makes sense, thanks for the explanation. cheers, Dean
Logged
Mobacken Racing
Sr. Member
****
Offline Offline

Age: 36
Location: Östersund - Sweden
Posts: 810


Turbine junkie


WWW

Ignore
« Reply #473 on: May 06, 2014, 03:24:03 PM »

You are welcome. smiley

To avoid two hours of Eurovision Song Festival I sneaked out to the shed and flushed the gearbox just now, it rotates much freer now after being spun up with kerosine in the sump so I assume the grease is gone now.



I noticed that a fair bit of the kero leaked into the exhaust scroll through the power turbine shaft seal, but the very small amount of oil used later should keep any smoke in the exhaust to a minimum. If it turns out to be a problem I just got a set of piston ring seals that I ordered just in case that would happen.

Cheers!
/Anders
Logged
Mobacken Racing
Sr. Member
****
Offline Offline

Age: 36
Location: Östersund - Sweden
Posts: 810


Turbine junkie


WWW

Ignore
« Reply #474 on: May 09, 2014, 01:08:22 PM »

Assembling the bike for a car/bike show two weeks from now, we will have our own space with the twinturbo jet kick and my turbine bike.









Cheers!
/Anders
Logged
grumm441
Hero Member
*****
Offline Offline

Location: Wazavudu Bellytank Spirit of Sunshine Bellytank
Posts: 1402

HK 327




Ignore
« Reply #475 on: May 10, 2014, 09:13:51 PM »

You are welcome. smiley

To avoid two hours of Eurovision Song Festival

Cheers!
/Anders

We get it for twelve hours on tv on the other side of the planet
G
Logged

Chief Motorcycle Steward Dry Lakes Racers Australia Inc
Now with stars
I build it, Goggles tries his hardest to break it
salt27
Hero Member
*****
Offline Offline

Age: 60
Location: S.W. Orygun
Posts: 1244





Ignore
« Reply #476 on: May 10, 2014, 09:30:38 PM »

You are welcome. smiley

To avoid two hours of Eurovision Song Festival

Cheers!
/Anders

We get it for twelve hours on tv on the other side of the planet
G


So now we know what Goggs has been preoccupied with. (fashion tips)   grin
Logged
Mobacken Racing
Sr. Member
****
Offline Offline

Age: 36
Location: Östersund - Sweden
Posts: 810


Turbine junkie


WWW

Ignore
« Reply #477 on: May 11, 2014, 04:02:58 PM »

I continued getting the bike ready for the bike show, the rear wheel got a set of ceramic bearings and a wipe with an acetone rag to get the worst of the dried in chain lubricant off it.



I also did some more work on the rear fender to make it more visible just what the bike will look like when finished.



The clearance for the tire is slightly more than 5cm, no risk that the tire will expand and hit it at speed. When I run with spiked tires I`ll have a metal fender to keep the spikes from coming lose and opening up a couple of new holes in my body...



The idea is to narrow it down further back so that it will have a slim ending, I have a clear picture of the finished result in my head and I hope that I can make the fender look anything like it. smiley



With the front fender and fairings in place it looks like the lines are ok, I am tempted to cut a bit from the fairing sides to make the entire engine accessible without having to remove the plastic.



Cheers!
/Anders
Logged
Koncretekid
Hero Member
*****
Offline Offline

Age: 70
Location: Yarmouth, Nova Scotia & Lafayette, Co.
Posts: 1015





Ignore
« Reply #478 on: May 11, 2014, 08:20:12 PM »

"When I run with spiked tires I`ll have a metal fender to keep the spikes from coming lose and opening up a couple of new holes in my body...

Methinks you already have some loose screws! grin
Logged

We get too soon oldt, and too late schmart!
Life's uncertain - eat dessert first!
Glen
Global Moderator
Hero Member
***
Offline Offline

Age: 82
Location: South West Utah
Posts: 6931

SCTA/BNI timer 1983 to 2004, Retired,. Crew on Tur



« Reply #479 on: May 11, 2014, 08:47:02 PM »

Love the updates, thanks. You are really progressing daily.
Logged

Glen
Crew on Turbinator II

South West, Utah
Pages: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 [32] 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 ... 117   Go Up
  Print  
 
Jump to:  

Powered by MySQL Powered by PHP Powered by SMF 1.1.21 | SMF © 2015, Simple Machines
Simple Audio Video Embedder
Valid XHTML 1.0! Valid CSS!


Google visited last this page September 23, 2017, 06:32:45 AM