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Post by Johansson on Aug 19, 2011 8:46:11 GMT -5
My thought on the swing arm was, if you move the rear tire farther back, would that give you more room for exhaust piping and reduce the chance of hot legs? A rigid frame will be easier to drive. Any estimated speed #'s. ernie A longer wheel base gives much more room for the exhaust pipe, but since I will try to keep it looking like a bike I will make the wheel base as short as possible. Preferably 190cm or a bit shorter still if it is practical.
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Post by Johansson on Aug 20, 2011 15:28:05 GMT -5
I made a temporary seat for the frame yesterday and put some white paint on the fairing, a very quick job but it still looks better than deep red. ![](http://i231.photobucket.com/albums/ee196/Anders811017/Anders%20projekt/Johansson%20Unit%2001/Ramen56.jpg) ![](http://i231.photobucket.com/albums/ee196/Anders811017/Anders%20projekt/Johansson%20Unit%2001/Ramen55.jpg)
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Post by racket on Aug 20, 2011 17:24:06 GMT -5
Hi Anders
A perfectly serviceable seating arrangement ;-)
White matches the wheels
Cheers John
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Post by propellanttech on Aug 20, 2011 19:23:26 GMT -5
Love the build so far, but that seat looks like it would give splinters to the bootay!!
(wood needles in the rear).
James
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Post by Johansson on Aug 21, 2011 13:00:03 GMT -5
It is not very comfortable but at least I can sit on the bike to test out where the seat will be mounted. I have changed my mind again about the exhaust pipe, it won´t be possible to direct the exhaust to the sides after all since my legs will be dangerously close to the pipes so I will have to route a single exhaust up behind the seat just like I planned from the beginning. I am happy since it will look much better that way. ![:)](//storage.proboards.com/forum/images/smiley/smiley.png) I was worried earlier that I would have to use that space to fit a fuel tank but if I mount it at the "normal" place above the engine I won´t have to place anything in the tail section. The oil tank will be fitted below the engine hanging from the lower frame tubes along with the oil pumps.
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Post by Johansson on Aug 22, 2011 12:52:54 GMT -5
I measured the turbine exducer clearance just now and it is only 0.25mm, I´ll increase it to 0.5mm before I coat the housing. Good thing I checked. Edit: 0.6mm I mean, my head must be somewhere else right now... ![:(](//storage.proboards.com/forum/images/smiley/sad.png)
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Post by Johansson on Aug 24, 2011 15:30:33 GMT -5
I got the coating and the angle gear with the mail today! ![:)](//storage.proboards.com/forum/images/smiley/smiley.png) ![](http://i231.photobucket.com/albums/ee196/Anders811017/Anders%20projekt/Johansson%20Unit%2001/JU-01539.jpg) ![](http://i231.photobucket.com/albums/ee196/Anders811017/Anders%20projekt/Johansson%20Unit%2001/JU-01542.jpg) First thing was to open up the clearance to 0.6mm in the turbine cover, then wash it thoroughly and sand blaster it to remove every bit of oil and give the coating a rough surface to stick to. ![](http://i231.photobucket.com/albums/ee196/Anders811017/Anders%20projekt/Johansson%20Unit%2001/JU-01538.jpg) ![](http://i231.photobucket.com/albums/ee196/Anders811017/Anders%20projekt/Johansson%20Unit%2001/JU-01540.jpg) After the coating was applied it looked like this, it was just like spray painting with a normal paint so no problems there. ![](http://i231.photobucket.com/albums/ee196/Anders811017/Anders%20projekt/Johansson%20Unit%2001/JU-01541.jpg) I need to cure the coating in 400°C before I fit the part to the engine, so when I have coated the NGV part a friend has promised me to cure it in the oven they have at work. Another interesting project later will be to couple the gear box and the angle gear together, will have to take them apart to see how they are made and make up some drawings. Perhaps a somewhat flexible coupling is best to allow for some misalignment. ![](http://i231.photobucket.com/albums/ee196/Anders811017/Anders%20projekt/Johansson%20Unit%2001/JU-01543.jpg) Cheers!
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Post by propellanttech on Aug 25, 2011 23:56:53 GMT -5
Johansson,
Can I ask where you got the design from? I think I want to do a similar design, but I can't seem to find any drawings that portray a turbo turbine in the design.
James
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Post by Johansson on Aug 26, 2011 0:45:52 GMT -5
Johansson, Can I ask where you got the design from? I think I want to do a similar design, but I can't seem to find any drawings that portray a turbo turbine in the design. James I´ve come up with it myself, all the critical vane angles and tolerances are close or identical to the ones in the engine John has build, he has been a great mentor during the build and have given me lots of hints and advice.
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Post by Johansson on Aug 26, 2011 16:17:59 GMT -5
Now the NGV is coated as well, I tried to undo the irrepairable damage the picture of our latest casting adventure did to the forum by making a pose for all the ladies out there following this thread. Easier said than done when you are flexible as the average pine tree... ![](http://i231.photobucket.com/albums/ee196/Anders811017/Anders%20projekt/Johansson%20Unit%2001/JU-01546.jpg) Sand blasting the NGV housing. ![](http://i231.photobucket.com/albums/ee196/Anders811017/Anders%20projekt/Johansson%20Unit%2001/JU-01545.jpg) Just about to coat the housing, I didn´t take any pics of the finished result but I did make a video tour around the shop for the swedish motorcycle community I am part of. ![](http://i231.photobucket.com/albums/ee196/Anders811017/Anders%20projekt/Johansson%20Unit%2001/JU-01547.jpg) I keep my fingers crossed that you don´t understand the language since the song played out in the stereo at the moment is a bit below the belt... Cheers!
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Post by Richard OConnell on Aug 26, 2011 20:59:44 GMT -5
haha should have gone to the turbine bike and simulates the sound it should make as well ![:)](//storage.proboards.com/forum/images/smiley/smiley.png) Its looking really good.
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Post by Johansson on Aug 27, 2011 14:37:04 GMT -5
The bar has just been raised for the APS-Omega landspeed class, an electrical bike has got the one month old world record of 205mph at Bonneville. ![:)](//storage.proboards.com/forum/images/smiley/smiley.png) ![](http://i142.photobucket.com/albums/r98/isiahstites/DSCF5536.jpg) ![](http://i142.photobucket.com/albums/r98/isiahstites/Electric%20Bike/100_9996.jpg) It is a bulky beast so my hope is that my narrow fairings will give me some advantage, engine power can always be upgraded later but I would like to keep the frame. It might sound daft to be planning for a land speed record when the engine isn´t even started yet but it keeps me focused so bear with me please. ![;)](//storage.proboards.com/forum/images/smiley/wink.png)
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Post by Johansson on Aug 28, 2011 13:53:55 GMT -5
Today I got the coated parts heat treated at a friends work, they have a large enough oven that held the parts at 400°C for an hour each. ![](http://i231.photobucket.com/albums/ee196/Anders811017/Anders%20projekt/Johansson%20Unit%2001/JU-01548.jpg) ![](http://i231.photobucket.com/albums/ee196/Anders811017/Anders%20projekt/Johansson%20Unit%2001/JU-01549.jpg) My friend with the oven, my very bored 1.5 year old girl and a barely touchable turbine housing. ![](http://i231.photobucket.com/albums/ee196/Anders811017/Anders%20projekt/Johansson%20Unit%2001/JU-01550.jpg) When I got home I placed the parts on the kitchen bench to study the result in better light, it looks really sweet and I cannot find any spot I´ve missed. ![](http://i231.photobucket.com/albums/ee196/Anders811017/Anders%20projekt/Johansson%20Unit%2001/JU-01551.jpg) ![](http://i231.photobucket.com/albums/ee196/Anders811017/Anders%20projekt/Johansson%20Unit%2001/JU-01553.jpg) Before I called it an evening I fitted the vapour tubes just to see how much I have to shorten them, I made them overly long on purpose and found that they need to be shortened 5mm so they don´t end too close to the combustor lid. ![](http://i231.photobucket.com/albums/ee196/Anders811017/Anders%20projekt/Johansson%20Unit%2001/JU-01555.jpg) The coating is surprisingly resistant to scratches once it is heat treated, before I could scratch it with my nail but now I needed a knife to remove the coating from the spots where the vapour tubes will be welded. ![](http://i231.photobucket.com/albums/ee196/Anders811017/Anders%20projekt/Johansson%20Unit%2001/JU-01554.jpg) Cheers!
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metiz
Senior Member
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Joined: April 2011
Posts: 297
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Post by metiz on Aug 28, 2011 14:17:10 GMT -5
Surely you can beat a battery powered, bulky, 5-mile radius before you need to recharge for 10 hours bike like that ![:)](//storage.proboards.com/forum/images/smiley/smiley.png) great paintjob btw
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Post by Johansson on Aug 28, 2011 23:51:29 GMT -5
We´ll see, one can only guess how much further the battery development will have come when I have this bike ready for Bonneville. It doesen´t really matter anyway, I´ll try to squeeze as much power as possible out of a DIY gas turbine and if that isn´t enough I have at least given it a try. ![:)](//storage.proboards.com/forum/images/smiley/smiley.png) Thanks!
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