Toro Overdrive Q's

Bill it sounds like a good idea but I cant get my head around how you do it.
You may have to go step by step.
Can the box still be removed and how would the sleeve attatch to the output of the box?
Keith

G'day Wagoo, I'm actually hiding in the garage now researching your idea! It would be solid but I can't quite picture how it would be done? The nut that holds the sleeve onto the gearbox would be a problem wouldn't it? usually you would slip the sleeve in and then tighten the nut up after it. You wouldn't be able to get the sleeve in over the nut and I'm guessing you need that nut in there on the gearbox still?? I think I'll pull it out today's the day I pull it out anyway so I'll have a look...

I Think what would you'd do Keith is take the bearing off the sleeve, put it into the overdrive and weld over the spline.. Then instead of using the needle bearing use a tapered which would sit in place better and then throw the whole thing in? but then leaves the question in my last post

With the standard gearbox, the rear mainshaft nut, aside from holding the tranafer case input gear in position, also prevents all the gearbox mainshaft gears and mainshaft from floating forwards on overun.By fitting a tapered roller bearing on the front of the mainshaft in place of the standard parrallel roller bearing, and setting the mainshaft endfloat to zero or slight preload, the rear mainshaft nut can be deleted, so that the one piece welded together overdrive clutch sleeve/input shaft just slides onto the mainshaft.
The mainshaft nut is not required because the standard transfercase input gear has been replaced by the overdrive output gear and the endthrust control for both drive and overun loads is handled within the overdive itself.
The overdrive can be removed if desired and the transfercase brought back to original in the normal way. The tapered roller bearing can stay in place.
I'm looking into doing a similar mod to a friends LT95 Rangey transmission that we are making up an underdrive for providing the front of the mainshaft can be machined down enough for a tapered roller bearing.
Lt95 mainshafts are drilled for oil pump feed, so I hope the hole isn't too big.
Bill.

That actually sounds pretty good Wagoo.. I guess it would be cheap and very strong? thanks for the different idea! I'll have a look when it's out but it sounds pretty good to me...