Grace (BikeHedonia) Posted May 7, 2020 Share Posted May 7, 2020 What is the most off-the-hook modification you've ever made to a motorcycle? And DID IT WORK? I have been reflecting on this since I saw my friend's lockdown project. Business has been dead under covid19, so he's been using the spare time to solve the main problem he was having with his scooter - lack of power. First he put in a carb jet from a TZR, but something more was needed. A supercharger, perhaps? Um yes, that's a supercharger off a Subaru. See the red steel pipe? Well at first he used radiator hose but the suction created by the supercharger was so great that the radiator hose collapsed in on itself. No problem - just use steel. Nobody was harmed in the modification of this scooter (yet). Coming soon to a drag race on a Chiang Mai superhighway near you... 1 Link to comment Share on other sites More sharing options...
XTreme Posted May 7, 2020 Share Posted May 7, 2020 Wow! Is it running Grace? Link to comment Share on other sites More sharing options...
Grace (BikeHedonia) Posted May 7, 2020 Author Share Posted May 7, 2020 1 minute ago, XTreme said: Wow! Is it running Grace? Sure is. Link to comment Share on other sites More sharing options...
Pedro Posted May 7, 2020 Share Posted May 7, 2020 Seems a problematic place to have a chain and a spinning compressor, right inside your core when you're in full tuck ... 1 Link to comment Share on other sites More sharing options...
Grace (BikeHedonia) Posted May 8, 2020 Author Share Posted May 8, 2020 17 hours ago, Pedro said: Seems a problematic place to have a chain and a spinning compressor, right inside your core when you're in full tuck ... Yes I'm frankly terrified of it. Do you see in the video how the chain shimmies as the revs drop? I made sure not to stand in front or behind the bike in case it goes flying off like a missile... My friend assures me he's going to put a proper cover on it... Link to comment Share on other sites More sharing options...
Grace (BikeHedonia) Posted May 8, 2020 Author Share Posted May 8, 2020 15 hours ago, BusBoy said: Awesome However that's a root charger and I suspect it is designed to be run alongside a turbo to eliminate turbo lag. As such it should have an electronic clutch to phase in and out once turbo has spooled up rather than direct drive. If you spin them too fast the internal blades shred and the bearings seize. He has mitigated this with a larger sprocket to the main drive but that may well cause him to lose power in the lower revs rather than gain it. So what he gains in top end hp he will lose in in low to midrange revs. Full marks for spunk though. Thanks so much for the analysis, that's interesting. I will ask him how the low to mid range feels now. I was wondering on what basis he'd calculated the sprocket sizes and ratios - was wondering whether he was using math or guesswork, but my Thai is not so good. There's a lot of practical mechanical creativity here in Thailand but not so many people have the opportunity to access really good technical training to understand the principles behind it all, so you end up with a lot of trial and error. And some wild modifications! As you say, full marks for spunk. Link to comment Share on other sites More sharing options...
Tym Posted May 8, 2020 Share Posted May 8, 2020 The mods i do is replace broken kawasaki parts! 1 Link to comment Share on other sites More sharing options...
Catteeclan Posted May 8, 2020 Share Posted May 8, 2020 And that things made for a 4 cylinder, don"t need to be spinning that thing up much to gain horses. If you've got the time and parts, why not. 1 Link to comment Share on other sites More sharing options...
Grace (BikeHedonia) Posted May 8, 2020 Author Share Posted May 8, 2020 2 hours ago, Tym said: The mods i do is replace broken kawasaki parts! I don't understand, KLR parts don't break?? Link to comment Share on other sites More sharing options...
Grace (BikeHedonia) Posted May 8, 2020 Author Share Posted May 8, 2020 1 hour ago, Catteeclan said: And that things made for a 4 cylinder, don"t need to be spinning that thing up much to gain horses. If you've got the time and parts, why not. Yeah I think the supercharger was 100 baht, so just over $3. Why not indeed 1 Link to comment Share on other sites More sharing options...
Tym Posted May 8, 2020 Share Posted May 8, 2020 3 hours ago, Grace (BikeHedonia) said: I don't understand, KLR parts don't break?? No, thats all they do is break..Team Green died in the late 1970's.... 1 Link to comment Share on other sites More sharing options...
Buckster Posted May 8, 2020 Share Posted May 8, 2020 1 minute ago, Tym said: No, thats all they do is break..Team Green died in the late 1970's.... Korean shite. Link to comment Share on other sites More sharing options...
Tym Posted May 8, 2020 Share Posted May 8, 2020 5 minutes ago, Buckster said: Korean shite. Team Green never cared, they built heavy equipment, Kawasaki motorcyles were just some pia, someday, i will return to Japan, and kick everyone of Team Greens ass. Link to comment Share on other sites More sharing options...
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