Something odd in Matt's tranny, Look what I found in first Options

[Dr Evil]

So before I helped gut Matt's car he let me take it for a drive. It is a tail shifter so it was sloppy, but the gears all went in without a grind. I was actually surprised at how well it shifted. So, you can immagine my suprise when I parted his tranny to find a 2-5 set of dog teeth with all of the bands and blocks on the first gear. Also, they were pretty worn as was the synchro band. It was odd that it would have worked so well in this shape. I changed it out with a great used 2-5 set of teeth and a synchro band.


Lets see if it starts to shift like crap now (IMG:style_emoticons/default/biggrin.gif) (IMG:style_emoticons/default/wink.gif)

If anyone wants to be a guinea pig for me to experiment on wiht regards to this I am game. (IMG:style_emoticons/default/biggrin.gif)

[hmeeder]

I had never seen that done.

Now I know you can machine an extra groove into a 2-5 dogteeth set and use it that way (Clayton showed me one he had worked on.)

If I understand it correctly, the only reason for the extra brakeband on 2-5 is that you shift "up" to those gears and you need to get the gear to spin to correct speed.

Since first gear is never shifted "up" to, it doesn't need the extra brake band, and does have the extra notch for the first gear stop block.

Without ever having tried it, I could see how it may work just fine.

Am I thinking of it wrong?

[Dr Evil]

I had never seen that done.

Now I know you can machine an extra groove into a 2-5 dogteeth set and use it that way (Clayton showed me one he had worked on.)

If I understand it correctly, the only reason for the extra brakeband on 2-5 is that you shift "up" to those gears and you need to get the gear to spin to correct speed.

Since first gear is never shifted "up" to, it doesn't need the extra brake band, and does have the extra notch for the first gear stop block.

Without ever having tried it, I could see how it may work just fine.

Am I thinking of it wrong?

Nope, you are correct in your assumptions, but it is a little bit more than that. 1st also has a more robust block which would potentially force the synchro band out more than the other gears to cope with the torque forces of the first gear pairing. Second would be slightly less so would not need as much. It still amazes me how this worked so well in such a state of repair.