Landracing Forum Home
December 18, 2017, 09:48:22 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 ... 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 [107] 108 109 110 111 112 113 114 115 116 117   Go Down
  Print  
Author Topic: APS/Ω Gas turbine bike build  (Read 405219 times)
0 Members and 1 Guest are viewing this topic.
Vinsky
Full Member
***
Offline Offline

Location: Pacific Northwest
Posts: 229





Ignore
« Reply #1590 on: March 01, 2017, 11:15:33 AM »

Now that's a bunch of crazy Swedes!  You sure know how to have fun. I think you should retire the trailer though, it looks like it's made it's last trip.
Logged

John
salt27
Hero Member
*****
Offline Offline

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





Ignore
« Reply #1591 on: March 01, 2017, 11:59:03 AM »

Now that's a bunch of crazy Swedes!  You sure know how to have fun. I think you should retire the trailer though, it looks like it's made it's last trip.


I would not underestimate these Swedes mechanical ability.
Replace the wood and add a couple overlapping patch panels, good as new.   cheers
Logged
Mobacken Racing
Sr. Member
****
Offline Offline

Age: 36
Location: Östersund - Sweden
Posts: 810


Turbine junkie


WWW

Ignore
« Reply #1592 on: March 01, 2017, 05:48:53 PM »

He he, I think the caravan has made its last trip. I was a bit worried that the whole top would fall off on the highway, even though we had tied it together with ratchet tie downs over the roof... grin
Logged
Mobacken Racing
Sr. Member
****
Offline Offline

Age: 36
Location: Östersund - Sweden
Posts: 810


Turbine junkie


WWW

Ignore
« Reply #1593 on: March 09, 2017, 05:50:27 PM »

With the jet kick racing done for the year it is about time to get the bike sorted out for the summer racing, so far I have made good progress but I really want to get it ready for a test run as soon as possible so I know that everything is ok.



I made the last brackets for the side fairings and asked my feancee to take a couple of photos with me on the bike so I could see how the fairings follow the leg angle.



The rules for the APS bike class says that the legs must be fully visible from the sides, plus I don´t want my legs to get caught on the fairings when lifting them from the ground to the foot pegs when starting a run.



I could see that there was a bit of trimming to do, aluminum is as you can see much easier to work with than stainless. Smiley



Now it looks much better, no problems moving my feet off and onto the footpegs any more.



When I sat on the bike I noticed that my right knee hits the connections for the air and propane hoses, so I decided to move them and at the same time mount them much sturdier than before.

On a side note I can really recommend Migatronic tig welders, they are a real pleasure to weld with compared to the machines I have used before.



The fittings are in place, now they are both out of the way and fitted rock solid.



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

Age: N/A
Location: Johannesburg, South Africa
Posts: 4475





Ignore
« Reply #1594 on: March 09, 2017, 07:11:43 PM »

You work so hard!!!!.
Anders, it's a pleasure to follow your build.
Thanks man. cheers cheers cheers cheers
Logged

Mobacken Racing
Sr. Member
****
Offline Offline

Age: 36
Location: Östersund - Sweden
Posts: 810


Turbine junkie


WWW

Ignore
« Reply #1595 on: March 10, 2017, 12:01:56 AM »

Thanks! smiley

I also found time to finish one more thing on the "to do" list for my new JU-02 engine, and that was securing the compressor cover radially.



With the help of a bit of duct tape I had the compressor wheel centered in the cover and could drill two 4mm holes through both cover and diffusor plate. They were then threaded for a pair of M5 screws that would act as dowels.



And the job is done! I used screws with an unthreaded length close to the top where it fits through the compressor cover, this gave a very snug fit which will center the compressor wheel in the cover every time I assemble the engine.



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

Age: N/A
Location: Johannesburg, South Africa
Posts: 4475





Ignore
« Reply #1596 on: March 10, 2017, 04:38:04 AM »

Great innovation. cheers cheers cheers
Logged

Mobacken Racing
Sr. Member
****
Offline Offline

Age: 36
Location: Östersund - Sweden
Posts: 810


Turbine junkie


WWW

Ignore
« Reply #1597 on: March 10, 2017, 06:51:12 AM »

Great innovation. cheers cheers cheers

I would have prefered that the cover screws would do the aligning but since the radial clearance for the compressor blades is only tenths of a millimeter it is just not accurate enough.

Hopefully I won´t be disassembling the engine between every single run so I don´t mind having to remove these "threaded dowels", I have built the engine with ease of overhaul in mind so I think I will be able to remove the engine from the bike, disassemble it completely, put it back together and have it back in the bike within an hour.

Do that trick with an inline-4 bike... grin
Logged
Mobacken Racing
Sr. Member
****
Offline Offline

Age: 36
Location: Östersund - Sweden
Posts: 810


Turbine junkie


WWW

Ignore
« Reply #1598 on: March 14, 2017, 05:53:32 PM »

The only real issue I´ve been having with the bike during the runs is that the engine tends to flame out when I start braking, the oil is thrown forward, the oil pump pickup sucks air and the oil pressure switch cuts the fuel pump. With a full oil tank and easy braking it can be avoided but it is definitively something I need to fix.



Point of no return... Smiley



Now both tanks have a nice big hole in them, the fuel tank has one internal baffle but the oil tank was completely empty. I must have forgotten to add baffles to it before I welded the lid on, no wonder I have had problems with it...



I made a pair of stainless lids and borrowed a nut riveting tool (don´t know the english word for it...) from my friend Olov.



I really need to get me one of those, a very useful tool!



I removed the fuel tank baffle and spent the next half hour cleaning out the fuel tank, when I was satisfied I cut out a block of tank foam for it.



I will fill the oil tank with foam as well, a bit unusual perhaps but I cannot see why it wouldn´t work with 0W30 oil just as well as with kerosene. I guess I will soon find out, with the newly added lid on top of the tank I can easily remove it if it for some reason won´t work.



Cheers!
/Anders
Logged
Stainless1
Administrator
Hero Member
***
Offline Offline

Age: 66
Location: Wichita KS
Posts: 6492


Robert W. P. "Stainless" Steele Wichita, Kansas



« Reply #1599 on: March 14, 2017, 06:14:06 PM »

My experience with that foam is "you better have a filter"
 cheers
Logged

Stainless
Red Hat 228.039, 2001, 65ci, MSA Bockscar Lakester with a little N20 
MSA Bockscar Lakester #1000 my fastest mile 245 and change, 84 ci turbobusa motor... but Corey's 233 MPH H/BFL record is still 3MPH faster than mine.
Seldom Seen Slim
Administrator
Hero Member
***
Offline Offline

Age: 69
Location: Skandia, Michigan
Posts: 11827


Nancy -- 201.913 mph record on a production ZX15!


WWW
« Reply #1600 on: March 14, 2017, 06:16:37 PM »

http://i231.photobucket.com/albums/ee196/Anders811017/Anders%20projekt/Johansson%20Unit%2001/JU-01%202259.jpg

I'd like to have the braided hose concession at your parts shop, Anders. grin
Logged

Jon E. Wennerberg
 a/k/a Seldom Seen Slim
 Skandia, Michigan
 (that's way up north)
2 Club member x2
Owner of landracing.com
Mobacken Racing
Sr. Member
****
Offline Offline

Age: 36
Location: Östersund - Sweden
Posts: 810


Turbine junkie


WWW

Ignore
« Reply #1601 on: March 15, 2017, 07:33:21 AM »

My experience with that foam is "you better have a filter"
 cheers

Is the foam constantly releasing particles or is it just when it is new?
Logged
saltwheels262
Hero Member
*****
Online Online

Age: 63
Location: cumberland plateau
Posts: 1060


LTA 7/2013




Ignore
« Reply #1602 on: March 15, 2017, 08:52:02 AM »

It looks like the threaded inserts you are using are plusnuts. On those the shanks have splits in them. The other solid threaded inserts are called rivnuts. Same tool for both inserts. They come in aluminum and steel. They can be had to clamp different thickness materials. I have used them in plastic material also.

Franey
Logged

bub '07 - 140.293 a/pg   120" crate street mill  
bub '10 - 158.100  sweetooth gear
lta  7/11 -163.389  7/17/11; 3 run avg.-162.450
ohio -    - 185.076 w/#684      
lta 8/14  - 169.xxx. w/sw2           
'16 -- 0 runs ; 0 events -- made a 2 state change in ZIP codes

" it's not as easy as it looks. "
                            - franey  8/2007
manta22
Hero Member
*****
Offline Offline

Age: 79
Location: Tucson, AZ
Posts: 3025


What, me worry?




Ignore
« Reply #1603 on: March 15, 2017, 10:16:38 AM »

Franey;

They look like generic versions of Rivnuts to me. Originally developed in the late '30s or early '40s to fasten de-icer boots to wing leading edges if I remember correctly. Very useful little devices!

Regards, Neil  Tucson, AZ
Logged

Regards, Neil  Tucson, AZ
saltwheels262
Hero Member
*****
Online Online

Age: 63
Location: cumberland plateau
Posts: 1060


LTA 7/2013




Ignore
« Reply #1604 on: March 15, 2017, 12:30:52 PM »

Could be. You are probably right.
Logged

bub '07 - 140.293 a/pg   120" crate street mill  
bub '10 - 158.100  sweetooth gear
lta  7/11 -163.389  7/17/11; 3 run avg.-162.450
ohio -    - 185.076 w/#684      
lta 8/14  - 169.xxx. w/sw2           
'16 -- 0 runs ; 0 events -- made a 2 state change in ZIP codes

" it's not as easy as it looks. "
                            - franey  8/2007
Pages: 1 ... 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 [107] 108 109 110 111 112 113 114 115 116 117   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 March 15, 2017, 09:26:01 PM