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Thread: Turbine powered trike
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10th Feb 2020, 02:38 PM #61
Hi Shed,
Yeah i was thinking of the weight as well, once i finish off most of the structural work will get back on getting the test stand set up and the engine and we will find out what needs to be done to get the best results. You not the bad guy mate, i had other people tell me about welding axles ect, ect my budget is low and can only do DIY stuff and this trike will not be going 300 kph and i never seen a trike go 300 kph, they are for cruising only. LOL i maybe only able to ride it on a short stretch of road, and if i can get a dyno power run we could get an idea of what it can do. There is a lot of unknowns with this project, the engine may run to hot or could grenade itself, the gearbox may not be suitable , ect , ect This trike will be heavy as i will need some type of birth shield around the engine, so if it grenade itself i wont have bits of debris entering my body so may use 3/8 stainless steel plates.
Cheers,
Mark.
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10th Feb 2020, 05:31 PM #62Diamond Member
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- Mar 2014
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10th Feb 2020, 08:08 PM #63Most Valued Member
- Join Date
- Apr 2012
- Location
- Healesville
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No worries Mark, pity, I was hoping to see you break the sound barrier.
G/day snapa, yeah I mig it also but if the welded part is to be expected to withstand extreme loads and mortal safety is also a concern then it needs to be done properly.
At this link you will find a list alloy steels, the axle is likely made out of one of these, in the PDF files to the right you will find the welding requirements and fillers https://www.voestalpine.com/highperf...n/alloy-steel/ then another complexity could be if the axle has been carbonized.
I wonder if voestalpine and voldermort are related?
cheers, shed
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12th Feb 2020, 05:07 PM #64
I got a lot done today, finished off one side of the steel structure. I flip it over as i forgot to leave room for the 1/2 inch bolt when i welded the cross section on the structure.
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17th Feb 2020, 02:34 PM #65
Finished off one other side of the steel structure, weld in a couple of round stock in each end of the structure and drill 1/2 inch holes to bolt onto the plate.
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17th Feb 2020, 02:41 PM #66
I won't weld in this cross tube as i am waiting for a very important part for the gearbox that's coming from Canada, should be here next week.
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26th Feb 2020, 05:20 PM #67
The NGV arrive from Canada, wasn't cheap but i need to have it as i don't have one for the other Boeing gearbox and this one is not butchered up like the other NGV. I can still use it just have to make up the other parts that will fit onto it. As yo can see there is a bleed air duct will hook up a gate valve, this will help on start up of the engine as i can destroy the engine in ~ 10 seconds. I may not need it but it reassurance for me.
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26th Feb 2020, 05:27 PM #68
Here is the NGV fitted to the gearbox, as you can see in the photos it's getting a bit cramped with this type of set up.
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26th Feb 2020, 05:53 PM #69
Cut out the steel gusset and weleded in a new one. And yes i am overkill on this structure build Bit of a fiddly job to do, i found out the gearbox is off centre a bit i can make a new base plate or mill slots in the holes and centre up the gearbox that way, also the steel structure that bolts onto the side of the gearbox will need to be modified as well .
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15th Mar 2020, 03:18 PM #70
lots of welding and grinding i have been doing, at last got most of the work done on the diff, had to grind my crappy Welds and re weld . I welded on some Steel gussets on the two long diff perches just to give it a bit more strength. Tack weld a nut for the vent tube and sealed up with JB weld. Cut off the square tubes on the frame will redo the side structure supports for the gearbox with rectangle tubes and use shoulder bolts to hold everything together. The two steel tabs on the side of the frame i will weld a tube in between the them they a quite solid and will help in strengthening the frame.
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12th Apr 2020, 12:13 PM #71
Got some work done on the steel structure on the rear end of the frame, gave it some paint and welded in more Steel gussets.
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12th Apr 2020, 12:17 PM #72
Got some V clamps , looks like i may have to pull the bigger clamp apart and cut it to size. The one that is closest to the size was ~25 mm short if i use this clamp i think it may leak.
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12th Apr 2020, 12:21 PM #73
Got 16 mm thick plate to machine up the two v band flanges and got a scrap piece of ss tube will have a go at making a concentric reducer.
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14th Jun 2020, 02:10 PM #74
Time for a update, redone the side support structure for the gearbox welded in solid round steel stock inside the tubes and steel gussets plates and drill to size for shoulder bolts, nice and strong support for the gearbox now.
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14th Jun 2020, 02:18 PM #75
Machine up the two V flanges out of that steel plate.
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