Trans gears.

[CO ZX2]

Originally Posted by MetroMPG

CO - you're having this done to your car?

I have the 7% O/D 5th gear only in the car right now(since Monday).

No $2500 jobs for me. My cost for the gearset pictured: $200 for precision grinding + $55 for junk transmission. Almost finished. The gears are ground and pressed together.

Sending gears to my brother in IL to do the welding. He is a certified pipefitter and does the quality welding you see in the pictures.

After welding, I will hone the gear bores myself and assemble the rest. My good neighbor will give me a hand installing the trans.

Can't wait to see 1850 RPM at 56 MPH. Will be 33.05 rpm per 1 mph vs. 43.63 rpm per 1 mph with original gears.

[CO ZX2]

Dear CO ZX2,

zpiloto has just replied to a thread you have subscribed to entitled - Trans
gears. - in the General Tech forum of GasSavers.

This thread is located at:
http://www.gassavers.org/showthread....4&goto=newpost

Here is the message that has just been posted:
***************

---Quote (Originally by CO ZX2)---
Here is a link to a gear mod from a friend I have been in contact with for some
time. Lots of good pics. His machinist used wire Electrical Discharge Machining
to modify the gears. I decided on grinding for my parts, mainly for local shop
capability and cost. A lot of work for a .545 vs .770 fifth gear but lowers my
engine RPM by 30%.

http://mypeoplepc.com/members/tleone/gears/

P.S. omg, please reply to my PM sent you earlier this week.
---End Quote---


zpiloto: Was this your car that was modified?


CO ZX2:

No, it was not my car. That car belongs to the author of the site in the link.

But I am preparing a similar gearset now. Should be done soon. See above reply to MetroMPG.

[JanGeo]

cheeper to try taller tires than to change gears

[GasSavers_DaX]

Ah. I never thought of doing it that way. Wire EDM is cool stuff, we do quite a bit of wire and sinker electrode EDM processes at my work. Beautiful welds on the gears BTW. Were they heat treated after welding?

Originally Posted by CO ZX2

Dear CO ZX2,

zpiloto has just replied to a thread you have subscribed to entitled - Trans
gears. - in the General Tech forum of GasSavers.

This thread is located at:
http://www.gassavers.org/showthread....4&goto=newpost

Here is the message that has just been posted:
***************

---Quote (Originally by CO ZX2)---
Here is a link to a gear mod from a friend I have been in contact with for some
time. Lots of good pics. His machinist used wire Electrical Discharge Machining
to modify the gears. I decided on grinding for my parts, mainly for local shop
capability and cost. A lot of work for a .545 vs .770 fifth gear but lowers my
engine RPM by 30%.

http://mypeoplepc.com/members/tleone/gears/

P.S. omg, please reply to my PM sent you earlier this week.
---End Quote---


zpiloto: Was this your car that was modified?


CO ZX2:

No, it was not my car. That car belongs to the author of the site in the link.

But I am preparing a similar gearset now. Should be done soon. See above reply to MetroMPG.

[landspeed]

Interesting I don't think I would want to change my current gear ratios, but would like another gear of 0.5:1 overdrive or something . My current gears are quite good for hypermiling anyway; 5th is 50mph / 1900rpm or something like that.