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Post by pitciblackscotland on Oct 15, 2020 14:08:17 GMT -5
Got some cardboard boxes out the recycling bin and roughly made up the c/c diameter and the potential elbow, personally I think it looks alright with a 100mm radius on the shorter side. Think I'll go 6-8mm on the flat sides and 3mm on the 100mm radius and 5mm on the 188mm radius so it'll have strength with the 6-8mm and the gasses hitting the back curve won't destroy it rapidly by having it thick but still bendable. Hi, i would go with 8mm on all flat sides, i did the same set up on my first turbo jet build using 6mm flats after time the sides stated to bulge out of shape.
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Post by wannabebuilderuk on Oct 15, 2020 17:41:46 GMT -5
If you don't mind me asking, Is that threaded hole for liquid fuel drain? That was a valve like so www.ebay.co.uk/itm/183899777349I'll most likely use the port for my c/c pressure gauge or cut it out and put the lobster claw there. Hi, i would go with 8mm on all flat sides, i did the same set up on my first turbo jet build using 6mm flats after time the sides stated to bulge out of shape. I got 6mm cut on the plasma at work and have ordered 4mm (£5) to do the curved faces so I'll see how it goes and redo it in the future if needed but thanks for the info.
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Post by wannabebuilderuk on Oct 15, 2020 17:43:41 GMT -5
Got a 10mm flange and two 6mm plates cut from scrap at work on the cnc plasma, 4mm ordered for the curved faces. Thinking of doing an over the top setup instead of underslung c/c and mounting all the components in front of the compressor inlet below the c/c to keep it compact and easier to mount to a chassis of sorts but we'll see
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Post by wannabebuilderuk on Oct 16, 2020 15:38:16 GMT -5
Got a nice heavy bit of 100*100*10mm angle from the scrap at work which will be my fuel pump mount, 16cm steel bowl arrived which I'll use for the 15cm f/t dome end - it's approximately 0.7mm thick so should do nicely.
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Post by wannabebuilderuk on Oct 17, 2020 9:52:22 GMT -5
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Post by wannabebuilderuk on Oct 24, 2020 10:45:07 GMT -5
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Post by wannabebuilderuk on Oct 25, 2020 12:48:48 GMT -5
Back curved plate done, just need to grind down the welds and it'll look fine. front curved plate I'm going to press at work as it was hard enough doing the larger radius!
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Post by wannabebuilderuk on Oct 27, 2020 6:34:51 GMT -5
Pressed to roughly the right shape, should be nice and easy to finish
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Post by wannabebuilderuk on Oct 27, 2020 18:27:26 GMT -5
What setups do you lot have for your p2 reading (boost). Mounted on the c/c or on the compressor to c/c piping or what. I can't find many photos for brainstorming ideas so need some input.
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Post by wannabebuilderuk on Oct 30, 2020 14:57:35 GMT -5
Got a solo 440 leaf blower today, already disassembled and problems identified and should be finish fixing by tomorrow. Probably won't be powerful enough but we'll see.
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Post by racket on Oct 30, 2020 17:46:38 GMT -5
Make sure when you reassemble to check the clearance between rotor/comp and its shroud , if necessary you may need to pack it out , or as in my case I glued on an ally sheet metal shroud to the comp blades using silicone, this then prevented "backflow" and increased its "pressure" , we need "pressure" as well as flow from the blower , the "pressure" gets the air flowing through all the restrictions
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Post by wannabebuilderuk on Oct 30, 2020 18:08:47 GMT -5
I'm assuming you're meaning between the top part of the housing where the air is drawn in and the top of the compressor fins? Interesting that the seal between the halfs doesn't go all the way, if I remove it the gap between the top of the fins and wheel drops by another 1-2mm.
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Post by racket on Oct 30, 2020 18:17:31 GMT -5
Yep , the axial clearance between fins and front wall , you want it as close as possible , exactly the same as your turbo comp clearance to its shroud to keep efficiency high .
A number of leafblower were also leaf vacuums that needed the greater blade/shroud clearance to prevent jamming , but a blower only setup needs close clearances.
My leafblower couldn't get enough power into the turbo to get the engine started until I made mods to the leafblower comp
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Post by wannabebuilderuk on Oct 31, 2020 10:35:46 GMT -5
my dad has tuned the carb perfectly and it runs like a charm with pretty good flow and pressure so fingers crossed it'll be perfect! *edit Made a crude but working plug for the compressor inlet
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Post by wannabebuilderuk on Nov 1, 2020 9:32:21 GMT -5
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