glentwenty Posted June 7, 2015 Author Share Posted June 7, 2015 It's very hard to find a sprocket that's not too big but nearly all over them are too big so may need to find a bigger sprocket for the Impeller Quote Link to post Share on other sites
Chops Posted June 7, 2015 Share Posted June 7, 2015 (edited) I would have thought balancing and sealing would be your biggest problem here, along with tensioning the chain correctly so it doesnt jump off and smash your shit at 7/8k rpm! A guard would be a must, take a look at clutch guards from high power drag cars and things and put a steel plate between you and people outside the car, and the whole chain sprockett assembly. Tbh, a belt would be a wayy better idea imo, factory and aftermarket chargers use them without problem and you can butcher alternators and crankshaft sprockets for parts, and use a belt tensioner from something like an ej20s air con pump which would be wayyy easier to fit to a custom jobbie like this! Edited June 7, 2015 by Chops Quote Link to post Share on other sites
glentwenty Posted June 8, 2015 Author Share Posted June 8, 2015 I would have thought balancing and sealing would be your biggest problem here, along with tensioning the chain correctly so it doesnt jump off and smash your shit at 7/8k rpm! A guard would be a must, take a look at clutch guards from high power drag cars and things and put a steel plate between you and people outside the car, and the whole chain sprockett assembly. Tbh, a belt would be a wayy better idea imo, factory and aftermarket chargers use them without problem and you can butcher alternators and crankshaft sprockets for parts, and use a belt tensioner from something like an ej20s air con pump which would be wayyy easier to fit to a custom jobbie like this! I was originally going to use pulleys but its very hard to find a big pulley for the step up in RPMs also i have read alot about belts always wearing out even on the high quality superchargers Quote Link to post Share on other sites
glentwenty Posted June 8, 2015 Author Share Posted June 8, 2015 Alright i need you guys to brainstorm!! So atm i have a front sprocket that is 4cm not 4mm -.- so 40mm. 180/40 = 4.5 7000 rpm x 4.5 = 31500 which i would say isnt enough to actually make any respectable boost. I am using the figure 180 because i was orginally using a sprocket over 200mm and that was way to big so 180 is probably the max sized sprocket i want to go. Sooo here is where i need you guys. Is there anything that you guys know of that uses a sprocket for a chain at about 20mm in diameter? 180/20 = 9 7000rpm x 9 = 63000, 63k rpm is not too bad so i would need something around this size. But i am unable to think of anything that uses a sprocket this small. Motorbike engine sprockets are around 40mm which is just to big :/ Quote Link to post Share on other sites
MARC MOSS Posted June 8, 2015 Share Posted June 8, 2015 Yep my sons mini motorbike has a sprocket that small on the front http://pages.ebay.com/link/?nav=item.view&alt=web&id=201355347917 Quote Link to post Share on other sites
glentwenty Posted June 8, 2015 Author Share Posted June 8, 2015 Yep my sons mini motorbike has a sprocket that small on the front http://pages.ebay.com/link/?nav=item.view&alt=web&id=201355347917 You are a genius! But they dont ship to nz -.- will keep looking tho! now i know what they are called! Quote Link to post Share on other sites
glentwenty Posted June 8, 2015 Author Share Posted June 8, 2015 Yep my sons mini motorbike has a sprocket that small on the front http://pages.ebay.com/link/?nav=item.view&alt=web&id=201355347917 Only problem with those is they need to go onto the end of a shaft and they have no hole in the center :/ Quote Link to post Share on other sites
maddox710 Posted June 8, 2015 Share Posted June 8, 2015 No offence bit this looks like a disaster waiting to happen Quote Link to post Share on other sites
glentwenty Posted June 8, 2015 Author Share Posted June 8, 2015 No offence bit this looks like a disaster waiting to happen Guess we will find out right Quote Link to post Share on other sites
MARC MOSS Posted June 8, 2015 Share Posted June 8, 2015 Only problem with those is they need to go onto the end of a shaft and they have no hole in the center :/ If you are willing to build your own you surely have the ability to make it fit mate, if not I'd stop right away and make something else Quote Link to post Share on other sites
MARC MOSS Posted June 8, 2015 Share Posted June 8, 2015 No offence bit this looks like a disaster waiting to happenThis Not to put a downer on things but even if it was possible, you have a lot of precision calculations ahead of you and then the challenge of building it right afterwards Quote Link to post Share on other sites
glentwenty Posted June 8, 2015 Author Share Posted June 8, 2015 ThisNot to put a downer on things but even if it was possible, you have a lot of precision calculations ahead of you and then the challenge of building it right afterwardsJust stick around for the ride guys if it works it works Quote Link to post Share on other sites
FrozenJakalope Posted June 8, 2015 Share Posted June 8, 2015 I think if it was just a case of fucking the car up, then it's your car so whatever. But there's an actual, real risk that it could disintegrate at 50k rpm and turn itself into a claymore detonating under the bonnet. Don't hurt yourself or anyone else just to see if you can pull it off, it's not worth it man. Quote Link to post Share on other sites
haggis Posted June 8, 2015 Share Posted June 8, 2015 The problem I have is how much boost are you wanting ? the car already has a turbo with plenty of boost at the ready ? Quote Link to post Share on other sites
maddox710 Posted June 8, 2015 Share Posted June 8, 2015 Superchargers and turbochargers are made by machines that manufacturer these items with great precision and very high tolerance for them to work perfect for thousands of miles and be very reliable and perform great for a long time too Quote Link to post Share on other sites
glentwenty Posted June 9, 2015 Author Share Posted June 9, 2015 I think if it was just a case of fucking the car up, then it's your car so whatever. But there's an actual, real risk that it could disintegrate at 50k rpm and turn itself into a claymore detonating under the bonnet. Don't hurt yourself or anyone else just to see if you can pull it off, it's not worth it man. Since a few of you are freaking out about the chain and stuff. I have thought of a much safer way of doing it. No chain no sprockets. The problem I have is how much boost are you wanting ? the car already has a turbo with plenty of boost at the ready ? Its not about how much boost im wanting. It is purely a project to see if it is possible to make something from a old turbo that can actually make boost. Some people don't have the money to buy a whole turbo setup. Sure the ct9 would be the better option to go obviously but thats not the point Quote Link to post Share on other sites
haggis Posted June 9, 2015 Share Posted June 9, 2015 Oh right are you on a N/A ? ... I think you can get ct9 pretty cheap man Quote Link to post Share on other sites
glentwenty Posted June 9, 2015 Author Share Posted June 9, 2015 Oh right are you on a N/A ? ... I think you can get ct9 pretty cheap man Yeah im N/A dude haha There isn't that many availible over here dude, and to ship the stuff is expensive as hell Quote Link to post Share on other sites
5e colin Posted June 9, 2015 Share Posted June 9, 2015 everything is possible and can be done it just how smart u are how its done try using a belt instead ?? ct9 are cack anyways keep it diy ha ha Quote Link to post Share on other sites
glentwenty Posted June 9, 2015 Author Share Posted June 9, 2015 everything is possible and can be done it just how smart u are how its done try using a belt instead ?? ct9 are cack anyways keep it diy ha ha That's the one colin ;) I am going to use a belt now, going to bolt another pulley onto the a/c pulley and run the shaft off that pulley, safer and probably work.better also much easier haha Quote Link to post Share on other sites
glentwenty Posted June 10, 2015 Author Share Posted June 10, 2015 For those of you who are interested i have some photos of where i was brainstorming! Emphasis on brainstorming...So in this photo you can see a pulley the turbo and a screwdriver ;) So the pulley that you can see that is where it is going to bolt onto. The P/S pulley nut i have replaced with a longer nut so that i can put a bolt through the other pulley and tighten into the nut on the P/S pulley so they will spin as one. The screwdriver is just there to hold it in place because i had no bolts that size at home haha. The turbo will be mounted up in this area somewhere so that the shaft is perfectly in line with the pulley. I will run a small belt off the extra pulley and around the end of the shaft. (May end up using a tiny pulley on the shaft) Here is a better photo of the position of the turbo! (don't mind my makeshift piping out of toilet rolls ;) ) I plan on running the piping in this direction as it will be easier than going down and along the front, Then i can get rid of that god awful pipe and filter So yeah as the project goes on more photos will come! More problems will obviously pop up in the near future so full steam ahead! Hope you guys enjoy Quote Link to post Share on other sites
MARC MOSS Posted June 10, 2015 Share Posted June 10, 2015 With the amount of boost that unit willake that toilet roll might as well stay lol Only joking lol keep at it I'm keen to see what happens Quote Link to post Share on other sites
glentwenty Posted June 10, 2015 Author Share Posted June 10, 2015 With the amount of boost that unit willake that toilet roll might as well stay lolOnly joking lol keep at it I'm keen to see what happensHahahaha probably ;) But we will see! haha Quote Link to post Share on other sites
glentwenty Posted June 11, 2015 Author Share Posted June 11, 2015 Does anyone have any suggestions for what piping to use? The outlet on the turbo is pretty small! Quote Link to post Share on other sites
5e colin Posted June 11, 2015 Share Posted June 11, 2015 get engineers hydrolic hose in that size it will work but aint pritty its bendable so no need for silicone couplers tru every corner you will only need 1 coupler to the tb !!! Quote Link to post Share on other sites
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