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Post by racket on Feb 25, 2016 21:00:21 GMT -5
Hi Ryan
Sounds OK :-)
All the best with the build
Cheers John
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greazy
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Joined: December 2015
Posts: 128
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Post by greazy on Mar 1, 2016 22:06:08 GMT -5
so i had a flick through the KTS catalogue and decided the X831 is the best option as i only have a max diameter of 300mm on my laythe and the next size up suitable wheel is 177mm exducer... the diffuser will be too big for the laythe.
i tried to contact KTS for pricing but they wouldn't have a bar of it unless i gave a buisness website when I said i dont have one they never replied after that. I'm assuming they don't deal with the public
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Post by racket on Mar 2, 2016 0:21:16 GMT -5
Hi Ryan
Yep KTS is a wholesaler so ask KTS for a local Distributor near you, thats what I did .
Rough pricing is at the bottom of the catalogue page.
Theres another option you might be interested in ...............
Wheel 575 , KTS # 6004 for the GTB6042 , 10 blades , 122mm inducer , 151.1 exducer with extended tip to 160.91mm, 10 mm tip height and an “efficient” 60 degree backswept exducer .
Now this wheel appears to screw onto a GT6041 turb wheel with its 1/2”-13G- left hand thread.
The GT6041 turb wheel would be big enough for >4 lbs/sec flow if I can squeeze 3.6 lbs/sec through a smaller TV94 turb, GT6041 inducer tip height ~25 mm whereas TV94 ~20 mm , exducer diameter ~119mm on the GT6041 whilst only ~108mm on the clipped TV94 .
Cheers John
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greazy
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Joined: December 2015
Posts: 128
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Post by greazy on Mar 2, 2016 8:29:09 GMT -5
I cant seem to find the pricing. I did look at that kts#6004 wheel but the super back is nearly 38 mm and an overall height 50mm bigger than the x831 (I'm worried about the critical rotation with it hanging so far over the bearing) and the threaded bore is another complication the T919 is a contender but only 20 mm difference between ind/exd and its reverse direction everything else is too big for my machinery KTS still wont reply ?
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Post by racket on Mar 2, 2016 15:48:58 GMT -5
Hi Ryan
The very large superback includes the attachment point for the wheel to the shaft and isn't a problem , together with the rather longish shaft it makes for more axial room for a flametube between comp and turb .
If you download the catalogue , theres a bar across the bottom of the page which has a number of items, the first one is "pricing MFS by size".
Who at KTS are you contacting ??
Where are you situated??
Cheers John
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greazy
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Joined: December 2015
Posts: 128
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Post by greazy on Mar 2, 2016 20:27:34 GMT -5
the whole boreless thing scares me not overly keen to play around with it. the two options I'm keen on atm X831 and the T919. the 919 throughput gains are only 7 to 9 lb over the 831 but the pr and fuel economy will be far less with smaller exd not sure if the tip height makes any difference to pr. the 813 seems to tick all the boxes so I'll go with that one if I can find a fair price for it.
I just contacted their general enquiry email address. and at the moment they are about as helpful as an ashtray on a (jet) motorbike
I'm in Perth Western Australia and have had a short browse online and haven't found any suppliers yet
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Post by racket on Mar 2, 2016 20:46:42 GMT -5
Hi Ryan I purchased a couple of KTS X846 wheels through www.procharge.com.au/ , KTS gave me this contact for Ben Heywood ben@procharge.com.au they're down in Melbourne Cheers John
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greazy
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Post by greazy on Mar 2, 2016 22:46:50 GMT -5
I'll flick him a msg and see where it goes thanks john
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greazy
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Posts: 128
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Post by greazy on Mar 27, 2016 8:35:21 GMT -5
hey John I finally got through to ben they can source the compressor wheel but its roughly the same as kingawa turbo prices 550 aud . I'll buy it from ben and support the aus market if i can't find a better price but it still seems pretty exorbitant to me, hope you dont mind me asking but how much did you pay for your wheel or how much do you think is a fair price for the x813 wheel.
ryanparisi.rp@gmail.com
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Post by racket on Mar 27, 2016 16:31:26 GMT -5
Hi Ryan
Yep , thats a fair price , not much different to what I paid , the $AU changes will account for the difference, its a big wheel and it appears KTS charge by the machine hours to mill the wheels.
There are smaller cast Garrett wheels that will cost you more .
Cheers John
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greazy
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Post by greazy on Mar 28, 2016 5:53:48 GMT -5
yea ok well i need to do some math and figure out what size to make the turbine wheel and then source a blank once I know I can get one I'll get stuck into the project and purchase the compressor wheel. I know i cam get 718 inconel up to 101.2mm bar stock anything bigger will just take time to source
ryan
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Post by racket on Mar 28, 2016 19:09:18 GMT -5
Hi Ryan
You might need to get it cut from plate , something ~20 mm thick and ~150 mm dia maybe .
Cheers John
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greazy
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Joined: December 2015
Posts: 128
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Post by greazy on Apr 7, 2016 3:15:20 GMT -5
131mm is the biggest they have in round bar i think that could work i cant do any calcs for 4 weeks because im away for work and dont have my kamps book haha
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Post by racket on Apr 7, 2016 4:00:18 GMT -5
Hi Ryan
131 mm might be a tad small , I think you'll be needing ~140-145 mm minimum , as a rough rule of thumb the axial turb needs to be ~90% of the comp diameter so that theres sufficient mean turb blade speed to produce the required horsepower, the X831 wheel is 151 mm with extended tip to 163 mm, so lets assume an average of 157 mm , multiply by 0.9 =141 mm .
A "bigger" turb wheel will have a better chance to drive the comp at the more modest temps used with a home made turb wheel , an "undersized" wheel will need high temps.
Cheers John
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gidge348
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Joined: September 2010
Posts: 426
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Post by gidge348 on Apr 7, 2016 5:09:03 GMT -5
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