Page 2 of 3 FirstFirst 123 LastLast
Results 16 to 30 of 35
  1. #16
    Join Date
    Oct 2016
    Location
    Melbourne
    Posts
    221

    Default

    Quote Originally Posted by OxxAndBert View Post
    I reckon you blokes must need a large space behind the tank to accommodate your nuts!!
    I'd be turning the seat cover into a wedgie at the thought of 200kmh on ice!

    I have to ask how you end up building turbine powered bikes/trikes?
    As a kid did you just wake up one morning and think "Im bored with Lego, let's make a turbine bike today!!" ??

    Most people have only ever seen turbine engines on aircraft, less have actually touched one and even less own them.
    You'd be in a pretty small group that is playing with one in your shed.

    Awesome stuff

    Steve
    Thanks Mr Steve,
    LOL!!! yeah and hang on for dear life that's what he told me and he won't ride on ice any more, more safer on land. When i discovered the internet back in the 90s that's when i wanted to build a turbine engine, my first engine was using a large turbo charger into a turbo jet and then i met Mr John Wallis he help me out a lot and he is part of a small group he in OZ and around the wold. We are on a web site Home | JATO -Jet and Turbine Owners- were other members share there knowledge and project builds. John built his jet bike before the internet using a TV 81 turbocharger https://www.youtube.com/watch?v=eUtDSjVZCUQ He is still building engines and pushing the limits on these turbines. When i was a kid my folks got me a capsela set i had so much fun with them and that started my interest in anything Mechanical.

    Cheers,
    Mark.

    Resize of Image-161.jpgbeefcake_on_bike.jpg994 003.jpgResize of Image-219.jpgResize of 100_1064.jpg
    Attached Images Attached Images

  2. #17
    Join Date
    Nov 2017
    Location
    Geelong, Australia
    Age
    53
    Posts
    498

    Default

    Thanks TB. Interesting journey.
    I'd never heard of Capsela - had to look it up on Google.
    Looks great, and I see its been renamed to "IQ Key".

    We've got 3 grandkids under 5, I don't think the granddaughter will be interested, but reckon the 2 boys could be right into it when they get older.

    Steve

  3. #18
    Join Date
    Dec 2007
    Location
    Sydney
    Posts
    100

    Default Girls do engineering too.

    She might be Steve, I loaned a mate a copy of Phil Irving’s biography and his 30 year old daughter read it and now she’s doing engineering at Uni.

    On the trike it’s single wheel at the front?
    Not like a Morgan ? stability will be interesting

    One of my wife’s nephews in Canada had a helicopter turbine, he was going to put it in a hot rod of some sort.
    H.
    Jimcracks for the rich and/or wealthy. (aka GKB '88)

  4. #19
    Join Date
    Oct 2016
    Location
    Melbourne
    Posts
    221

    Default

    Quote Originally Posted by clear out View Post
    She might be Steve, I loaned a mate a copy of Phil Irving’s biography and his 30 year old daughter read it and now she’s doing engineering at Uni.

    On the trike it’s single wheel at the front?
    Not like a Morgan ? stability will be interesting

    One of my wife’s nephews in Canada had a helicopter turbine, he was going to put it in a hot rod of some sort.
    H.
    Yeah single wheel at the front, i did not won't to cut to much off the diff for stability. I don't plan on going around corners at high speed. Yes MOTORCYCLES | Marine Turbine Technologies - The Leader in Turbine Technology uses a helicopter turbines in there
    Turbine Superbike and they build turbine trikes as well.

  5. #20
    Join Date
    Aug 2011
    Location
    Melbourne
    Posts
    4,209

    Default

    Man very interesting. This stuff is next level! I was always intrigued by your user name, now I know the significance.

    Looking at the last pic of that trike, I notice it has a curved profile on the rear tyres. Is there a reason for that tye of profile or is it a case of style and aesthetics?

    Also, how do you aquired a helicopter turbine (or any turbine for that matter) without re-mortgaging your house? They can't be cheap!

    Thanks for sharing, I'm going to enjoy watching this build.
    Simon
    Girl, I don't wanna know about your mild-mannered alter ego or anything like that." I mean, you tell me you're, uh, super-mega-ultra-lightning babe? That's all right with me. I'm good. I'm good.

  6. #21
    Join Date
    Oct 2016
    Location
    Melbourne
    Posts
    221

    Default

    Quote Originally Posted by simonl View Post
    Man very interesting. This stuff is next level! I was always intrigued by your user name, now I know the significance.

    Looking at the last pic of that trike, I notice it has a curved profile on the rear tyres. Is there a reason for that tye of profile or is it a case of style and aesthetics?

    Also, how do you aquired a helicopter turbine (or any turbine for that matter) without re-mortgaging your house? They can't be cheap!

    Thanks for sharing, I'm going to enjoy watching this build.
    Simon
    Hi Simon, no worries mate glad you are enjoying the build thread Yeah i was thinking i should share what i do for a hobby. i don't really know why the tyre has a curved profile, all i know is they are bloody expensive. I think the Y2K jet bikes were $145000 USD and you can't power out of a corner on these bikes only good for straight line runs, you can buy use turbine engines on Ebay USA but for the good ones not cheap, the cheap ones are well used and to find parts are hard to find, that's why we build our own engines using off the shelf parts. We get casting made up and machine them to spec, use turbocharger parts and fabricate flame tube and do more machining parts of the other parts that are needed.

    1.jpg10.jpgResize of turbine parts 1.jpgcomp cases 1.jpg109_0911_IMG.jpg

  7. #22
    Join Date
    Oct 2016
    Location
    Melbourne
    Posts
    221

    Default

    Hi all, a side note on how we get shaft horsepower of the turbine. John Wallis had his jet bike published on the Popular Science magazine a while ago, will show you how the bike works. Also a vid of a dyno run we did as well. That two stroke motor you hear is to run the high pressure fuel pump. https://www.youtube.com/watch?v=IHeqyb6fMFA&t=2s

    Resize of Rotation of Frank # 3.pngResize of Frank # 1.pngResize of Rotation of Frank # 2.png

  8. #23
    Join Date
    Oct 2016
    Location
    Melbourne
    Posts
    221

    Default

    I finish off making the welding jig for the diff, using 30mm round stock and machine up aluminium pucks. I need to clean out the diff housing again, needs to be supper clean, i lost count on how many times i have clean it but still finding bits of gunk and a bit of metal chips from drilling and tapping the holes. Should have it welded up this week.

    Resize of IMG_7708.jpgResize of IMG_7705.jpgResize of IMG_7704.jpgResize of IMG_7706.jpgResize of IMG_7707.jpg

  9. #24
    Join Date
    Oct 2016
    Location
    Melbourne
    Posts
    221

    Default

    Got the diff welded up, the tubes are a bit distorted from welding. The 30mm bar is stiff to rotate, there will be more welding done on the diff as i need perches welded on as well and i would like to grind the welds down flat and re weld just to make sure the tube is sealed.

    Resize of IMG_7710.jpgResize of IMG_7740.jpg

  10. #25
    Join Date
    Oct 2016
    Location
    Melbourne
    Posts
    221

    Default

    Been doing a lot of head scratching and made a mockup of the structure that needs to be made for the diff and gearbox. It needs to be fairly decent structure between gearbox and diff to handle the chain pull of >500 kgs.
    So used some scrap tubes to make the mockup, will be using heavy wall box tube once i am happy with this set up. I have to weld on four diff perches on the diff tubes and this will contorted the diff even more. Here is one more vid of the jet bike last run front view, you will see how quickly the bike accelerates this why the structure has to be robust. https://www.youtube.com/watch?v=g4c5by5LPxQ

    Resize of IMG_7739.jpgResize of IMG_7738.jpgResize of IMG_7742.jpgResize of IMG_7741.jpg

  11. #26
    Join Date
    Nov 2017
    Location
    Geelong, Australia
    Age
    53
    Posts
    498

    Default

    Thanks for the updates. You're making great progress.

    Have you had a look at the typical mounting structure for the engine in its production role? If not I think you'll be surprised just how light the structure is.
    I'm assuming you're direct coupling the driven turbine output to the diff, and not having any form of clutch in between? If that's the case then the torque application will be very smooth, and the structure doesn't have to cope with any shock loading compared to eg a manual clutch vehicle at launch. The highest load would likely be a spinning tyre that grabs.
    Just implying that the structure might not need to be anywhere near as heavy as you think it does. Wish I had design engineer skills to give something definite, but I don't. Can only offer my thoughts from working around turbine engines in the past.

    Couple of questions:
    1. What method did you use for the housing welding. I'm guessing you used MIG? Did you tack in a few places then run a root pass all the way around followed by a few more passes to build it up, or just do it all in one pass?
    2. What is the plan for the diff center? Some sort of limited slip arrangement or just an open center?

    Loving the build - keep up the good work

    Steve

  12. #27
    Join Date
    Oct 2016
    Location
    Melbourne
    Posts
    221

    Default

    Quote Originally Posted by OxxAndBert View Post
    Thanks for the updates. You're making great progress.

    Have you had a look at the typical mounting structure for the engine in its production role? If not I think you'll be surprised just how light the structure is.
    I'm assuming you're direct coupling the driven turbine output to the diff, and not having any form of clutch in between? If that's the case then the torque application will be very smooth, and the structure doesn't have to cope with any shock loading compared to eg a manual clutch vehicle at launch. The highest load would likely be a spinning tyre that grabs.
    Just implying that the structure might not need to be anywhere near as heavy as you think it does. Wish I had design engineer skills to give something definite, but I don't. Can only offer my thoughts from working around turbine engines in the past.

    Couple of questions:
    1. What method did you use for the housing welding. I'm guessing you used MIG? Did you tack in a few places then run a root pass all the way around followed by a few more passes to build it up, or just do it all in one pass?
    2. What is the plan for the diff center? Some sort of limited slip arrangement or just an open center?

    Loving the build - keep up the good work

    Steve
    Hi Steve,
    Glad you are enjoying the build and thanks for the comments. Yes have had a look at the mounting structure on the engine and will be using the same mounting structure for the trike, you might can see in this pic in Anders bike frame. Yeah no clutch and will use chain and sprockets and yes your right it is a smooth acceleration. But the gearbox is heavy about 40 kgs maybe a bit more and the two mounting points that hook up to the frame i don't really like as those two cast bosses on the side of the gearbox housing are for accessory Drive units and are not for holding the weight of the gearbox, so i have to make a suitable structure to hold it in place, the tube will be 3mm wall. I use my mig and made tacks all around the tube and then did a root pass and that was it, so maybe grind down flat and weld again? I just had a chat to someone else about this and he said as i have used a solid bar one piece bar with 4 contact points wheres in actual use, the diff is clamped in the center with the two half shafts having a single bearing at the ends and a loose sliding fit into the diff at the other end. There is plenty of room to accommodate slight misalignments. The diff will be a open center.

    Cheers,
    Mark.
    JU-01 983.jpg

  13. #28
    Join Date
    May 2011
    Location
    Murray Bridge S Aust.
    Age
    67
    Posts
    4,197

    Default

    That is an awesome project you've undertaken.
    I know this a stupid question, but is there an afterburner to go on this also, if it works like a fighter jet, I'd be really hanging on.
    Kryn
    To grow old is mandatory, growing up is optional.

  14. #29
    Join Date
    Oct 2016
    Location
    Melbourne
    Posts
    221

    Default

    Quote Originally Posted by KBs PensNmore View Post
    That is an awesome project you've undertaken.
    I know this a stupid question, but is there an afterburner to go on this also, if it works like a fighter jet, I'd be really hanging on.
    Kryn
    Thanks mate No afterburner i could fit one for show but i don't really won't large flames right behind my BUTT

  15. #30
    Join Date
    Oct 2016
    Location
    Melbourne
    Posts
    221

    Default

    I spent the whole day working on the the structure for the gearbox and diff today, this is what i have come up with the build so far.

    Resize of IMG_7748.jpgResize of IMG_7750.jpgResize of IMG_7753.jpgResize of IMG_7749.jpgResize of IMG_7751.jpgResize of IMG_7752.jpg

Page 2 of 3 FirstFirst 123 LastLast

Similar Threads

  1. A powered compound slide.
    By sacc51 in forum METALWORK GENERAL
    Replies: 23
    Last Post: 12th Nov 2017, 04:20 PM
  2. compressed aiir powered grease gun
    By BobL in forum METALWORK GENERAL
    Replies: 5
    Last Post: 21st May 2015, 02:02 AM
  3. New Blower for gas powered forge
    By BobL in forum THE SMITHY
    Replies: 13
    Last Post: 1st Oct 2013, 12:27 PM
  4. Trike
    By Andy Mac in forum METALWORK GENERAL
    Replies: 3
    Last Post: 26th Oct 2006, 09:26 AM
  5. Drill powered piston shear
    By Bob38S in forum METALWORK GENERAL
    Replies: 8
    Last Post: 18th Oct 2006, 10:22 AM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •