702854boy 682 #51 Posted 3 hours ago 36 minutes ago, Handy Don said: The transaxle drive pulley on the 6-speeds is unusual in that the sheave must run very, very close to the transaxle body (~.125”) to maintain the proper belt alignment to the small block K181. As well, the input shaft is very short, not leaving enough room for a hub on the side away from the transaxle case. To accommodate both requirements, the stock pulley has the setscrew in the valley of the sheave. My transaxle came without the pulley (which should have gotten my attention!). After not finding a suitable after-market pulley I finally got a used one. I would check with the vendors on this site--AtoZ (CALL Lincoln, don’t email) and K&B horse parts (Brian Badman @76c12091520h) My 6 speed also has a 5/8 input shaft instead of the 3/4 but it still has the 6 speed brake linkage, did they make the right pulley for the 5/8 shaft or do we have to figure out how to get something else to work Share this post Link to post Share on other sites
Handy Don 16,357 #52 Posted 2 hours ago 1 minute ago, 702854boy said: My 6 speed also has a 5/8 input shaft instead of the 3/4 but it still has the 6 speed brake linkage, did they make the right pulley for the 5/8 shaft or do we have to figure out how to get something else to work Yes, the stock pulley has a ⅝” bore. I think that the largest engine used with 6-speed transaxles was 9hp. With increasing horsepower the width of the engine changed so a longer and thicker transaxle input shaft became necessary, along with other adjustments. Share this post Link to post Share on other sites
702854boy 682 #53 Posted 1 hour ago 1 hour ago, Handy Don said: I think that the largest engine used with 6-speed transaxles was 9hp. Wouldn't the 1067 and 1267 have had a 6 speed? Share this post Link to post Share on other sites
kpinnc 17,994 #54 Posted 1 hour ago (edited) 5 minutes ago, 702854boy said: Wouldn't the 1067 and 1267 have had a 6 speed? And Raiders up to 14hp. My 1973 Bronco (hydrostatic) still had the 10 pinion differential originally. I thought the 1973-1974 period was when the heavy differentials were introduced? Maybe my question should be what exactly is a 6 speed vs an 8 speed? I know the brake drum orientation changed at some point but did the differential change coincide with this? And I also thought all trannies with high/low had 5/8 input shafts? Edited 1 hour ago by kpinnc Share this post Link to post Share on other sites
Handy Don 16,357 #55 Posted 19 minutes ago (edited) 1 hour ago, 702854boy said: Wouldn't the 1067 and 1267 have had a 6 speed? Yes 1 hour ago, kpinnc said: And Raiders up to 14hp. Nope. Only to 12 with Unidrive My 1973 Bronco (hydrostatic) still had the 10 pinion differential originally. 6-speeds had LSD, but not all LSDs were in 6-speeds I thought the 1973-1974 period was when the heavy differentials were introduced? Not clear to me. By “heavy” do you mean 8-pinion (vs. 10-pinion in the LSD)? Maybe my question should be what exactly is a 6 speed vs an 8 speed? I know the brake drum orientation changed at some point but did the differential change coincide with this? 6-speed has 1-2-3-R, Hi-Lo, brake drum close to rear axle & clockwise rotation (forward), and LSD. 8-speed (apparently from 1970) moved the brake drum and dropped the LSD (and added dipstick?) And I also thought all trannies with high/low had 5/8 input shafts? I think you are correct here. Length, though, I’m not sure. Apologies. Here’s the info from the Unidrive Repair Manual. “III” indicates 6-speed version (5060 and 5071); “II” indicate 3-speed (5053 & 5058) The Raider 10 & 12 did use 6-speed in ’68 & ‘69 No 6-speeds after 1969 Clearly my memory has gotten fuzzy on the input shaft lengths and diameters. Edited 6 minutes ago by Handy Don Share this post Link to post Share on other sites
