theshee Posted December 21, 2007 Report Share Posted December 21, 2007 Sold the cylinders and top end of my bros twister motor we didnt build and here is what we found... Yamabond had been put on so thick it ran into the crank, and crank bearings, and the tranny was covered in yamabond. The shift drum was touching yamabond that had pooled in the bottom of the case. Crank bearings are very hard to turn, so probably ruined. Just thought i would share what we found. Crank bearing o-ring, notice where in ran in the front.. Trashed crank bearings... (not exatally sure how the yamabond covered these inside bearings so bad?) Quote Link to comment Share on other sites More sharing options...
Dave I. Posted December 21, 2007 Report Share Posted December 21, 2007 damn, did they use the whole tube? i put like a little 1/4"bead all around mine and it still squished out.....they must have ran that on there like a fat bead of silicone... Quote Link to comment Share on other sites More sharing options...
theshee Posted December 21, 2007 Author Report Share Posted December 21, 2007 sucks, those were all BRAND NEW TZ bearings on that crank. Less then 3 rides on them, now they gotta be chabged or cleaned out somehow. Quote Link to comment Share on other sites More sharing options...
RIPPEN Posted December 21, 2007 Report Share Posted December 21, 2007 But hey man... It didn't leak.. :shrug: :: RIPPEN Quote Link to comment Share on other sites More sharing options...
dirtplay1975 Posted December 21, 2007 Report Share Posted December 21, 2007 that sucks hell maybe they thought they needed to use it all around the bearings to hold them in Quote Link to comment Share on other sites More sharing options...
jbooker82 Posted December 21, 2007 Report Share Posted December 21, 2007 (edited) sucks, those were all BRAND NEW TZ bearings on that crank. Less then 3 rides on them, now they gotta be chabged or cleaned out somehow. Let them soak in Acetone it will disolve yamabond. You could probably soake the whole crank. I dont know if there is any type of plastic in that center webing. Probably should remove the rubber O rings on the crank berrings if the bearings have any. Acetone will eat rubber and plastic. I never thought of coating my crank and rods in yamabond to lower drag :: Edited December 21, 2007 by jbooker82 Quote Link to comment Share on other sites More sharing options...
Cory9584 Posted December 21, 2007 Report Share Posted December 21, 2007 Mine squished out alot aswell, i didnt think it would hurt anything though. I thought this thread was about the other aftermath of too much yamabond, a huge headache and possibly a few backwards parts Quote Link to comment Share on other sites More sharing options...
2strokespirit Posted December 21, 2007 Report Share Posted December 21, 2007 In my opinion a builder or whom ever did the build, do not have a clue what they were doing, thats bad, If there is yamabond in the bearings but it did get oil and didn't turn colour, wash them out and they would be fine, depending on how much play they have. Quote Link to comment Share on other sites More sharing options...
rubberneck Posted December 21, 2007 Report Share Posted December 21, 2007 Wow, was that a known builder, or some backyard hilljack. You would think somebody putting together a motor the caliber of a twister would have a clue, but guess not. Unless the rest of us are all clueless and that is a new horsepower secret Quote Link to comment Share on other sites More sharing options...
racer Posted December 21, 2007 Report Share Posted December 21, 2007 I really really doubt some YB-4 hurt your bearings. Think about this logically. When two pieces wear, the harder wears slower. Which is harder, a nice precision ground bearing, or some tacky sealant shit? I'll choose the bearing. To check use the screwdriver to your ear method while turning the crank kinda fast. If you hear noise, they are no good, they should be silent. If you hear noise, and they do need to be replaced I doubt it has to do with the YB. Quote Link to comment Share on other sites More sharing options...
theshee Posted December 21, 2007 Author Report Share Posted December 21, 2007 I really really doubt some YB-4 hurt your bearings. Think about this logically. When two pieces wear, the harder wears slower. Which is harder, a nice precision ground bearing, or some tacky sealant shit? I'll choose the bearing. To check use the screwdriver to your ear method while turning the crank kinda fast. If you hear noise, they are no good, they should be silent. If you hear noise, and they do need to be replaced I doubt it has to do with the YB. I dont know, but thats what was in them and they are pretty damn stiff to turn now. Just seemed a little excessive on the yamabond with it running in everything. Quote Link to comment Share on other sites More sharing options...
kawiking Posted December 21, 2007 Report Share Posted December 21, 2007 damn !!! my buddy over did mine last spring, but not even close to that ! all of mine uzed on the out side of the cases. had to get a rubber mallet to bust the cases apart (found out tranny was stuck after we got it together). it crank didnt mess up the cases did it ? Quote Link to comment Share on other sites More sharing options...
theshee Posted December 21, 2007 Author Report Share Posted December 21, 2007 No, it didnt hurt the cases. Just gummed the tranny, shift drum and all the bearings up. Quote Link to comment Share on other sites More sharing options...
kawiking Posted December 21, 2007 Report Share Posted December 21, 2007 cool.... i was up in the attic this morning finding old parts to sell... and i found a set of cases i bought last year. forgot i had them !!! e-bay here i come !!! Quote Link to comment Share on other sites More sharing options...
RIPPEN Posted December 22, 2007 Report Share Posted December 22, 2007 I really really doubt some YB-4 hurt your bearings. Think about this logically. When two pieces wear, the harder wears slower. Which is harder, a nice precision ground bearing, or some tacky sealant shit? I'll choose the bearing. To check use the screwdriver to your ear method while turning the crank kinda fast. If you hear noise, they are no good, they should be silent. If you hear noise, and they do need to be replaced I doubt it has to do with the YB. Yeah, thats why its a great idea to use caulking in say.. Wheel bearings.. Please correct me if Iam wrong but wouldn't a shit load of that stuff being in there hurt the lubricating potential??? Therefore potentialy hurting the bearings? Whatever.. The point is, if someone pays to have a motor assembled there shouldn't be overly excessive amount of sealer INSIDE.. I understand there will be some insidel, but whats in there I would think would be cause for concern and a rightfully so, unhappy customer.. RIPPEN Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.