Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - View Single Post - Toying with idea of taller Metro 5th gear (to go with the already taller final drive)

MetroMPG · 10-31-2009, 03:58 PM

No straight cut gears for me - I'm going to re-use helical cut gears from a 2nd gear pair.

I like the idea of press fit and spot welds or pinned, even. The Ford ZX2 owner with the welded 5th gear set believes it may have been the continuous welding bead on both sides of his cogs that contributed to their demise (affecting the heat treatment/hardness).

10-31-2009, 03:58 PM	#78 (permalink)
MetroMPG Batman Junior Join Date: Nov 2007 Location: 1000 Islands, Ontario, Canada Posts: 22,530 Blackfly - '98 Geo Metro Team Metro Last 3: 70.09 mpg (US) MPGiata - '90 Mazda Miata 90 day: 54.46 mpg (US) Even Fancier Metro - '14 Mitsubishi Mirage top spec 90 day: 70.75 mpg (US) Appliance car Mirage - '14 Mitsubishi Mirage ES (base) 90 day: 62.14 mpg (US) Thanks: 4,078 Thanked 6,978 Times in 3,613 Posts	No straight cut gears for me - I'm going to re-use helical cut gears from a 2nd gear pair. I like the idea of press fit and spot welds or pinned, even. The Ford ZX2 owner with the welded 5th gear set believes it may have been the continuous welding bead on both sides of his cogs that contributed to their demise (affecting the heat treatment/hardness). __________________ Project MPGiata! Mods for getting 50+ MPG from a 1990 Miata Honda mods: Ecomodding my $800 Honda Fit 5-speed beater Mitsu mods: 70 MPG in my ecomodded, dirt cheap, 3-cylinder Mirage. Ecodriving test: Manual vs. automatic transmission MPG showdown EcoModder has launched a forum for the efficient new Mitsubishi Mirage www.MetroMPG.com - fuel efficiency info for Geo Metro owners www.ForkenSwift.com - electric car conversion on a beer budget