multihobbyguy 35 #1 Posted January 5, 2012 I was wondering if anyone knew offhand what size the engine pulley and transmission pulley is supposed to be on a RJ 58? Also what the diameter of the idler pulley is on a RJ 58. The RJ came with no engine, no idler and a incorrect transmission pulley. Any help would be greatly appreciated. Thanks, Chris. 1 Share this post Link to post Share on other sites
71_Bronco 1,072 #2 Posted January 5, 2012 Not sure about trans or idler, but the drive one is 2 1/2" O.D. and fits a 3/4" shaft with a 3/16" Keyway. not 100% sure if thats correct, someone please double check me. 1 Share this post Link to post Share on other sites
VinsRJ 721 #3 Posted January 5, 2012 Engine pulley is: 2 1/4" diameter, for 3/4" shaft, 3/16" keyway Idler pulley is: 2" diameter Tranny pulley is: 4" diameter, for 3/4" shaft, 3/16" keyway 1 Share this post Link to post Share on other sites
multihobbyguy 35 #4 Posted January 9, 2012 Thanks for the responses. I found the pulleys in the sizes listed and my father got to take it for a ride. Thanks again, Chris. 1 Share this post Link to post Share on other sites
VinsRJ 721 #5 Posted January 10, 2012 Looks like you did a fine job. Just make a couple steel rod belt puckers until you fins a belt guard and it'll shift without gear clash. Share this post Link to post Share on other sites
buckrancher 2,679 #6 Posted January 10, 2012 Engine pulley is: 2 1/4" diameter, for 3/4" shaft, 3/16" keyway Idler pulley is: 2" diameter Tranny pulley is: 4" diameter, for 3/4" shaft, 3/16" keyway engine pulley is 2.500 not 2.250 Share this post Link to post Share on other sites
multihobbyguy 35 #7 Posted January 10, 2012 Thanks, I will let my father know. The belt was really loose and slipped quite a bit. 1 Share this post Link to post Share on other sites
VinsRJ 721 #8 Posted January 11, 2012 engine pulley is 2.500 not 2.250 You are correct, I mis-measured.... :ph34r: 1 Share this post Link to post Share on other sites
Kenjets 19 #9 Posted September 10, 2020 I'm having trouble with my belt keeps turning (with clutch brake in ) transmission grinding?? am I missing something?? 1 Share this post Link to post Share on other sites
jsp_333 268 #10 Posted September 21, 2020 (edited) Ken, I don't see a response so I'll chime in. You need a cloth covered belt I've been told here. 29" And see above and make sure your pulley sizes are correct. I've got the opposite problem. I've got everything in the correct sizes but little forward motion with tranny engaged. Could be the k91 came off of some other piece of equipment but who knows. I'm using a 3.5" drive pulley just to make the thing move. Edited September 21, 2020 by jsp_333 further explanation 1 Share this post Link to post Share on other sites
jsp_333 268 #11 Posted December 1, 2022 Kenjets, I know it's 2 years later but how did you resolve your issue? I took mine apart restored it put it back together and now I've got your issue. Grinding gears because belt is turning. All my pulleys and belt are correct. 1 Share this post Link to post Share on other sites
Pullstart 62,922 #12 Posted December 1, 2022 6 minutes ago, jsp_333 said: Kenjets, I know it's 2 years later but how did you resolve your issue? I took mine apart restored it put it back together and now I've got your issue. Grinding gears because belt is turning. All my pulleys and belt are correct. land @Kenjets if you are still here… do you have the belt guard on? That is an important part of the clutch! Share this post Link to post Share on other sites
jsp_333 268 #13 Posted December 2, 2022 Pullstart. Ok I'll throw it on and report back. Thanks 1 1 Share this post Link to post Share on other sites
Pullstart 62,922 #14 Posted December 2, 2022 39 minutes ago, jsp_333 said: Pullstart. Ok I'll throw it on and report back. Thanks You should be pleasantly surprised! When the belt is slack, it drags on the guard and stops. Share this post Link to post Share on other sites
jsp_333 268 #15 Posted December 3, 2022 (edited) Oh is that how it's supposed to work. Who knew. Well I guess almost everyone here. Next issue. Roll pin for the clutch arm is mia so the idler pulley arm is moving at will. Threw in a cotter pin for now. It seems to be holding. Any idea how long is that spacer supposed to be for the belt guard - OM doesn't say. And how important is it anyway. Edited December 3, 2022 by jsp_333 updated - found solution to one problem 1 Share this post Link to post Share on other sites
jsp_333 268 #16 Posted December 4, 2022 So NEVER use a cotter pin in place of a roll pin. Sheered of almost immediately and had to punch it out. Got lucky. Found the correct roll pin in the garage. Also, Success! after I got the correct woodruff key in the transmission pulley - She jumped in the air. Just the exhaust guard now and figuring out the belt guard so the bolt doesn't wiggle out. 2 Share this post Link to post Share on other sites
wallfish 17,017 #17 Posted December 4, 2022 46 minutes ago, jsp_333 said: figuring out the belt guard so the bolt doesn't wiggle out. Cut some tube or buy spacers. 1 3/8" to 1 1/2" long I've done them with threaded rod and nuts too so the studs stay in place when removing the guard. 1 1 Share this post Link to post Share on other sites
Pullstart 62,922 #18 Posted December 4, 2022 1 hour ago, jsp_333 said: Success Great news! Share this post Link to post Share on other sites
jsp_333 268 #19 Posted December 11, 2022 Hey Pullstart and Wallfish... thanks so much for the help. A few minor adjustments and the threaded rod is working just like it should. And the diagram made it so much easier than trying to "see" it in my head. Really appreciate you taking the time. 1 Share this post Link to post Share on other sites
wallfish 17,017 #20 Posted December 12, 2022 2 hours ago, jsp_333 said: And the diagram made it so much easier Welcome A picture is worth a thousand words. Glad you got it all set 1 Share this post Link to post Share on other sites
