Thanks for you input Kim. Sorry for the late response but I may revisit this topic sometime so wanted to say I appreciate your input. With my intension as a super charger the bearing would support minimal mass. i estimate the whole rotor assembley to be 1/5th of the weight of a comparable...
Thanks for the links. I know I can make the air and will work out more precisely when the time comes, at the moment Ill concentrate on the bearings and shaft. I would like to somehow machine some permanent magnets on a 4 - 8mm shaft, maybe one with 2 poles and another with 4. If I dont use these...
Thanks for that and that sounds about what I would expect. I could live with that tbh lol. I got VE at 78% so more like 4hp so Ill accept that fuel efficiency must suffer. It it simple enough to bypass the supercharger or possibly dissengage it so then were just talking minor parasitc loss.
I...
Hi, unfortunately BorgWarner never published a compressor map for this turbo (BV50) but i can assimilate with a similar size turbo. First I want to see if I can solve the basic mechanical issues. One step at a time I guess but will defo post my findings on here when I get to it.
I thought about that but I dont believe the work required(in bhp) will be that high. The final drive shaft, compressor wheel & pulley / coupling would weigh no more than 130g or less, the complicated maths come with the air resistance (54/43 compressor) and then run that in 2 atmopheres boost (3...
one big difference here tho Brian is its diesel. You can put as much air as you like through a diesel engine it will only produce heat relevent to the fuel the map makes available to burn. It doesn't matter if you run a bottle of nitrous at idle with 50 psi boost it wont produce any more heat /...
Hmm side load, been thinking about that most of the night. I thought a large sprocket would produce lower load than a belt but surely any unequal load would unbalance a balanced shaft even tho the bearings have a radial force limit. Planatary gears with oil film bearings is probably the only way...
clear as mud mate
maybe dyson use magnetic or air bearings, i dont know. At the end of the day its just a f!*kin bearing, for my purpose it no other job but to withstand high centrifugal forces. ie I dont want it breaking apart causing pieces of compressor wheel to fly into my engine. I can see...
Thanks Brian thats some helpful stuff will re read in more detail just out of interest. Its amazing how the turbo bearings hold up behind the turbine at temps of 900 degrees so oil cooling is a must. The amount of R&D put in to overcoming this problem is on top of just the R&D for a 'cold'...
Thanks for getting the ball rolling (so to speak) 3DDave and understanding my hastly written question..
This ones cheap, must be bigger than it looks in the picture! https://webshop.antifriction.co.uk/Products/0005000e0009001d/7007CE%252FHCP4ADGA%2BSKF
exactly what i imagined. If I blag a linkedIn profile maybe they will just give me some for a prototype lol
So back to square one. Anything I could salvage from a product already in use, bit early for the latest dysons 104krpm motors to be scrapped!
Hi all. Im working on a diy project for a super charger. I need to purchase some high speed bearings capable of 80,000+ rpm. I know SKF make super precision anguler ball bearing for this but I am clueless of where to actually purchase these! I gotten a headache searching for days now. Or if...
