Bus 4 spd trans, Anybody done this Options

[jwalters]

(IMG:http://www.914world.com/bbs2/html/emoticons/confused24.gif)

Thought of an interesting topic---has anybody put a beefed up bus or t1 trans in the teener----

I loved the gear spacing on my old superbug--and first gear for my car,,well,,,sucks ass--and second is too tall for a good start off--

Would rather spend 650 bucks on a pro-streeter WITH a rhino case and super diff than thousands upgrading my 901--

Sand rail mid engine cable shifter should be able to be adapted rather easily and the trans install is a non-event...

What you think???? (IMG:http://www.914world.com/bbs2/html/emoticons/confused24.gif)

[andys]

QUOTE (jwalters @ Jan 22 2005, 12:40 AM)

[/QUOTE] (IMG:http://www.914world.com/bbs2/html/emoticons/biggrin.gif) The true net ratio of any trans is 1:1-however, none are made to this standard, therre would be no torque mulitplication-I believe you are referring to the first gear ratio in the tranny minus the final drive, if not, clarify.

Jwalters,

I guess I didn't make myself clear, so let me give it another shot. What I refer to as net, is the transmission gear ratio (any gear) multiplied by the R&P ratio. When you do this, it is much easier to compare the transmission ratios of one trans to another. If you don't, then you are always doing math. All the gear ratio charts that I have, have had this conversion done just for that reason. Tire size is of course yet another ingredient; BTDT. In dry lake racing, small gear ratio or tire roll-out changes can have a very significant impact on attaining top speed.

Back to my original comment, You will need something better than 3.00:1 (top gear, be it a 4, 5, or 6 speed, multiplied by the R&P ratio) to gain any significan advantage in lowering freeway/cruise RPM.

"but alas, a .84 and 3.88:1 R&P is still taller than our 901 with a .71 fifth and 4.429:1 R&P setup--which means better highway revs and economy."

Better try that math again....0.84 x 3.88 = 3.259.
0.71 x 4.429 = 3.145. The 901 has the taller (lower numerical) final (net) ratio yeilding a lower highway RPM.

Back to the Rancho/sand buggy racer transaxles. I only saw 3.86 as the tallest (lowest numerical) R&P ratio available. Are any 4th gears available that can take us to something better than the 901 final ratio? Sure would be nice......I just love those prices!!!

Andy