Travas 13 #1 Posted October 28, 2021 (edited) Ive recently pulley swapped my gt 1100. I believe it had a 3 or 4inch pulley in the front and 7inch in the back or whatever came stock. I put a 5 inch in the front and its still about the same speed. most likely because it is just a one inch difference. It also really likes to pull the belt off the clutch pulley. luckily I took the cover off the clutch side so i can put the belt back on but it gets annoying have to sloooooooowly ease off the clutch every time.also would like to know the size of the shaft on the transaxel since I cant find a tape measure in my shop or anywhere. Also what kind of oil do you guys put in your 11hp B&S . I use 5w-30 but think I should put something better in it since i put gas pedal on it. Also probably need to change the transaxel fluid because Its orange. edit: The transaxel is all stock on the WH. The "clutch "setup is just a belt tensioner if you didn't know. Edited October 28, 2021 by Travas Share this post Link to post Share on other sites
JoeM 7,874 #2 Posted October 28, 2021 http://gadi.agric.za/software/renting/pulley_calc.php this pulley calculator might help your speed question. 5w-30 works, my brother runs 10w-30. i use synthetic, transfers heat better. 1 Share this post Link to post Share on other sites
Travas 13 #3 Posted October 28, 2021 12 minutes ago, JoeM said: http://gadi.agric.za/software/renting/pulley_calc.php this pulley calculator might help your speed question. 5w-30 works, my brother runs 10w-30. i use synthetic, transfers heat better. thank you for the calculator. never knew that existed. I will find a way to use that with some of my "upcoming projects". Share this post Link to post Share on other sites
peter lena 8,720 #4 Posted October 28, 2021 @Travas , in addition to finding the correct pulley , suggest you spend some time detail lubricating that clutch linkage set up , nothing should be rusty or binding in any way , aerosol lubricant will make the rust run out , then a spray grease , and verification of function , with smooth easy engagement , pete 1 Share this post Link to post Share on other sites
Travas 13 #5 Posted October 28, 2021 9 minutes ago, peter lena said: @Travas , in addition to finding the correct pulley , suggest you spend some time detail lubricating that clutch linkage set up , nothing should be rusty or binding in any way , aerosol lubricant will make the rust run out , then a spray grease , and verification of function , with smooth easy engagement , pete Thanks, I'll try that when I get home. The clutch pulley and the clutch setup and all that is clean of rust other than light surface fading And little rust on the outside of the pulley It probably doesn't help that clutch pulley is sorta bent up for some reason. I know the transaxel pulley and the clutch pulley are stock. I would like to change the transaxel pulley to a smaller one so I don't blow the engine. Share this post Link to post Share on other sites
Pullstart 63,090 #6 Posted October 28, 2021 2 hours ago, Travas said: still about the same speed. most likely because it is just a one inch difference. I have no experience with pulley swaps, but keep in mind we’re dealing with geometry here. C=pi*D. If your diameter grew from 3 or 4 inches to 5 inches, that could be 25 to 66 percent over driven. 1 Share this post Link to post Share on other sites
Handy Don 12,451 #7 Posted October 28, 2021 3 hours ago, Travas said: Thanks, I'll try that when I get home. The clutch pulley and the clutch setup and all that is clean of rust other than light surface fading And little rust on the outside of the pulley It probably doesn't help that clutch pulley is sorta bent up for some reason. I know the transaxel pulley and the clutch pulley are stock. I would like to change the transaxel pulley to a smaller one so I don't blow the engine. Keep in mind that the part of the belt in tension is the bottom--the engine is turning counter-clockwise looking at the PTO end. The belt should NOT be down deep in either the engine or transmission pulley--it should ride right up at the outer edge of the pulley or even a tiny bit above it. A bent or broken pulley can cause the belt to wear prematurely, or be thrown off. I'd also suspect that the three pulleys are not all in the same plane. You need a long straightedge to check this. The clutch pulley can get misaligned due to wear in the support shaft that runs through the tractor. Less likely but possible is that someone had the engine loosened or off and it wasn't put back on straight. Changing pulley sizes can cause interferences with the cover, require a different belt size, or prevent the belt from slacking properly when the clutch is operated. Lots of "moving parts" in this equation. Share this post Link to post Share on other sites
Travas 13 #8 Posted November 1, 2021 Ive fixed the issue with the belt getting thrown off. I Just had to cut up the cover a little bit and it works just fine now! Share this post Link to post Share on other sites
Travas 13 #9 Posted November 1, 2021 On 10/28/2021 at 3:20 PM, Handy Don said: Keep in mind that the part of the belt in tension is the bottom--the engine is turning counter-clockwise looking at the PTO end. The belt should NOT be down deep in either the engine or transmission pulley--it should ride right up at the outer edge of the pulley or even a tiny bit above it. A bent or broken pulley can cause the belt to wear prematurely, or be thrown off. I'd also suspect that the three pulleys are not all in the same plane. You need a long straightedge to check this. The clutch pulley can get misaligned due to wear in the support shaft that runs through the tractor. Less likely but possible is that someone had the engine loosened or off and it wasn't put back on straight. Changing pulley sizes can cause interferences with the cover, require a different belt size, or prevent the belt from slacking properly when the clutch is operated. Lots of "moving parts" in this equation. Ive had the engine off many of times. and for this pulley swap I drilled new engine mount holesso I can you the same belt. , chopped up the cover, and removed some unneeded stuff. Ive made the engine as straight as possible, and the pulleys aligned, but using a straight edge is a probably good idea. Share this post Link to post Share on other sites
Snoopy11 5,714 #10 Posted November 6, 2021 I didn't see this post before... but @kpinnc and I know about pulley swaps... You go smaller on the trans... you will fly... On 10/28/2021 at 10:16 AM, Travas said: It also really likes to pull the belt off the clutch pulley That requires you to take a hammer and bend down the tab above the clutch pulley, which holds the belt on when you push the clutch in... Don 1 Share this post Link to post Share on other sites
Travas 13 #11 Posted November 9, 2021 On 11/6/2021 at 3:58 PM, Snoopy11 said: That requires you to take a hammer and bend down the tab above the clutch pulley, which holds the belt on when you push the clutch in... Yeah I did that and it worked for a bit. but I fixed it. just needed to bend the pulley down and put the back cover on until I need to service it. Thanks 1 Share this post Link to post Share on other sites
