View Single Post
Old 06-08-2010, 02:16 PM   #39 (permalink)
MetroMPG
Batman Junior
 
MetroMPG's Avatar
 
Join Date: Nov 2007
Location: 1000 Islands, Ontario, Canada
Posts: 22,534

Blackfly - '98 Geo Metro
Team Metro
Last 3: 70.09 mpg (US)

MPGiata - '90 Mazda Miata
90 day: 54.46 mpg (US)

Appliance car Mirage - '14 Mitsubishi Mirage ES (base)
90 day: 57.73 mpg (US)
Thanks: 4,082
Thanked 6,979 Times in 3,614 Posts
Thanks.

Well, I'll "keep up the work". There's bound to be some debate about whether it's "good work" or not.

But I'm having fun!

----

OK, some photos... Prepare to be amused!!



Above: the component parts of the test coupler v.1.0:
- wood to go over the input shaft
- the slotted disc is the hub from inside the power steering pump (the slots used to hold the pump vanes)
- the removable pump shaft to the motor (note pesky keyway style interface to the motor)




Yes, the pump hub is nailed to the wood. So far that part has been the LEAST trouble!



Above: change of plans... instead of trying to clamp it on, four screws are set into the slots between the input shaft splines. More positive connection.



Above: shaft & coupler installed in transmission & base plate for the (wood.. of course) motor mount.



Ready to go!



Gone!

The mechanical connection to the input shaft was so good that the failure point became the wood. It worked fine on 12 volts. But when I started up at 24 volts (from rest), the wood split in 3 places.

---

Since taking these pics, "work" has continued. I modified and tested coupler v.1.1 last night. It worked great ... until it failed. (Lasted many seconds longer than the first version though.)

Version 1.2 will be tried tomorrow.

I'm almost ready to invest in a metallic coupler - I hear they're all the rage these days.
__________________
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
  Reply With Quote