hurronnicane Posted August 10, 2021 Share Posted August 10, 2021 (edited) From the Pioneer Museum in Gunnison. Edited August 10, 2021 by hurronnicane 3 Quote Link to comment Share on other sites More sharing options...
AustinBike Posted August 12, 2021 Share Posted August 12, 2021 OK, still working through my crank issues. Maybe @mack_turtle can weigh in on the condition of my current SLX. I cleaned up the crank interface a bit and when doing so I saw this: Should it be like that? Looks like maybe I have one too many spacers and the arm is loosening because it is not gripping that much? \ This is what the inside of the arm looks like. There is a large area where there is no contact with the spindle. Combine that with the other end and you're looking at a real small contact patch. Here is the spindle. And last but not least, here is what the pinch bolts look like: At this point it is all cleaned up and reassembled. I cranked down the pinch bolts pretty hard but don't have a torque wrench to know how much is needed. I am uncomfortable taking the non-drive side spacer out because I did not bring that tool. Theoretically I could hit a shop and get a BB tool and some grease if I *had* to. Going to see how this holds for now over the next 2 days. I also have a cheap crank coming in from Amazon on Saturday and if the crank interface is better I may just use that. As a long shot, if the new arm fits on my existing crank, that would save me having to change the chainring. Ah the joys of hotel bike maintenance with only a couple of tools. Quote Link to comment Share on other sites More sharing options...
AustinBike Posted August 12, 2021 Share Posted August 12, 2021 And here is the new crank. There is a distinct possibility that this arm will work: It does look to have a better spindle contact pattern than the SLX. Quote Link to comment Share on other sites More sharing options...
mack_turtle Posted August 12, 2021 Share Posted August 12, 2021 (edited) that looks like you have too many spacers between your frame and your BB cups. the arm should cover more of the spindle than that. how wide is that BB shell 68/73 and what arrangement of spacers do you have on it? Edited August 12, 2021 by mack_turtle Quote Link to comment Share on other sites More sharing options...
Mattlikesbikes Posted August 12, 2021 Share Posted August 12, 2021 Yep. Should only be 2-4mm of space between spindle end and edge of the crank, before you tighten it down. Remove a spacer. 2 Quote Link to comment Share on other sites More sharing options...
AustinBike Posted August 12, 2021 Share Posted August 12, 2021 It is a standard Shimano bottom bracket (hollowtech II I believe). There are 2 spacers, one on the drive side and one on the non-drive side. I would be more comfortable removing the non-drive side spacer at this point. Quote Link to comment Share on other sites More sharing options...
mack_turtle Posted August 12, 2021 Share Posted August 12, 2021 (edited) I'm pretty certain that's a 73mm shell. there should be 2.5mm of spacers on the drive side and NO SPACERS on the NDS. the illustration below is taking from the BB-MT800 instructions, but the spacers have been the same for many years. the BB comes with 1.8 and 0.7mm spacers, which could be replaced with one 2.5mm spacer. once you remove the spacer from the NDS, the spindle should go deeper into the arm. that should solve your problem because the arm will get more purchase on the spindle. borrow a torque wrench and get it cinched down properly. if you have problems after that, there's a good chance that the cranks have damage. but putting new cranks on with improper spacing on the BB cups will probably have the same bad results you're getting now. Edited August 12, 2021 by mack_turtle Quote Link to comment Share on other sites More sharing options...
AustinBike Posted August 12, 2021 Share Posted August 12, 2021 Yes, I think the strategy is that today, after our activities are over, I run over to the shop and get a BB wrench and some grease and then remove the NDS spacer. Here is a shot of the BB head on - does look like a 2.5 on the drive side and a smaller one on the NDS: Quote Link to comment Share on other sites More sharing options...
mack_turtle Posted August 12, 2021 Share Posted August 12, 2021 yup, 100% that NDS spacer should not be there and is the root cause of your problems. if you had a 1.8 spacer on one side and a 0.7 on the other, it would just push the chainline over a tiny bit and the BB would function fine, but the BB is effectively too wide for your cranks now. 1 Quote Link to comment Share on other sites More sharing options...
AustinBike Posted August 12, 2021 Share Posted August 12, 2021 Yeah, they have a community bike place like yellow bike and I might swing by there on my morning ride or, worst case, hit a shop and buy a BB tool. The bad news is that I have two, if not three, BB tools at home. But $20 to solve my problem is a small price to pay. 1 Quote Link to comment Share on other sites More sharing options...
AustinBike Posted August 13, 2021 Share Posted August 13, 2021 Had a nice ride this morning and made a stop in at the LBS. $24 later I was riding home with a bottom bracket tool in my jersey pocket. I think I beat everyone on the garage thread: The good news is that taking the spacer out gave me a little more spindle contact area on the crankset: This *should* keep my crank arm on better. The cheap Amazon crankset will get tossed in the parts bin, wouldn't want to ride it for a long period of time, but it will be a nice replacement in a pinch when the SLX finally dies as apparently no LBS ever seems to have cranks in stock. 2 Quote Link to comment Share on other sites More sharing options...
mack_turtle Posted August 13, 2021 Share Posted August 13, 2021 (edited) there's that little plastic bracket with a metal pin in it that fits in the "pinch gap". the pin should line up with a hole in the spindle. I guess it's Shimano's belt-and-suspenders CYA piece. when you had that extra spacer behind the cup, did that metal pin make it into its home? it seems like that should tell you that the spacing was wrong. Edited August 13, 2021 by mack_turtle Quote Link to comment Share on other sites More sharing options...
AustinBike Posted August 13, 2021 Share Posted August 13, 2021 The stopper plate is in there, but it may have been damaged previously (the cranks came from eBay...) When I get back to Austin I am going to tear down the bike and clean/regrease the bottom bracket. If the stopper is damaged I'll just get a new one since they are only $2 or so. Quote Link to comment Share on other sites More sharing options...
ATXZJ Posted August 13, 2021 Share Posted August 13, 2021 Had to pull this bastard apart and go through all the bearings and also remove the long travel cascade link. Needed four linkage bearings but all else was fine. Quote Link to comment Share on other sites More sharing options...
RedRider3141 Posted August 13, 2021 Share Posted August 13, 2021 50 minutes ago, ATXZJ said: Needed four linkage bearings but all else was fine. A selfless plug for RWC. They have all kinds of suspension/bike bearings and list them individually and by set/ bike. If you give them specifics to build a new kit they don't have in their catalog they give you the set for free. I did this with my '07 Mission. https://www.enduroforkseals.com/products/rear-suspension/suspension-pivot-bearing-kits/ 2 1 Quote Link to comment Share on other sites More sharing options...
AustinBike Posted August 13, 2021 Share Posted August 13, 2021 I’ve used RWC and they are great. As long as they have your bike. 1 Quote Link to comment Share on other sites More sharing options...
ATXZJ Posted August 13, 2021 Share Posted August 13, 2021 21 minutes ago, RedRider3141 said: A selfless plug for RWC. They have all kinds of suspension/bike bearings and list them individually and by set/ bike. If you give them specifics to build a new kit they don't have in their catalog they give you the set for free. I did this with my '07 Mission. https://www.enduroforkseals.com/products/rear-suspension/suspension-pivot-bearing-kits/ Thanks! Ordered directly from forbidden and proceeded to pay $15 freaking dollars to ship a couple bearings and bolts. Quote Link to comment Share on other sites More sharing options...
Chief Posted August 14, 2021 Author Share Posted August 14, 2021 16 hours ago, ATXZJ said: Thanks! Ordered directly from forbidden and proceeded to pay $15 freaking dollars to ship a couple bearings and bolts. Sounds like Forbidden is in bed with the PDR tool companies🤣 1 Quote Link to comment Share on other sites More sharing options...
Mattlikesbikes Posted August 16, 2021 Share Posted August 16, 2021 (edited) So all the back and forth with John and his NM trip/BB issues and tools got me thinking about this tech tip. Back before Performance went out of business I picked up one of these clam shell tool kits. https://www.jensonusa.com/Foundation-Elite-Bike-Tool-Kit-2?pt_source=googleads&pt_medium=cpc&pt_campaign=shopping_us&pt_keyword=&gclid=CjwKCAjwmeiIBhA6EiwA-uaeFeWOA8DQBado5YEz3OtF_Ma7WFPW2A5n2JH785HmLLY9qC2a7854yRoCvVYQAvD_BwE Lots of different versions of the same thing available out there. Do I already own all these tools individually, yes. Are they high quality, no. Do I take this clam shell anytime I am doing something bigger than a single ride away from home, YES. Just last month I swapped some BB spacers on a buddies bike out in Colorado. He too thought he needed to install all three that came with the BB and had all kinds of issues as a result. EDIT: The cassette lockring tool needs a 1/2" ratchet, so I keep a 1/2 - 3/8 adapter in the case as I have a full ratchet set in the truck as well. I do use those giant tire levers all the time at home as well. I also carry a separate setup for handling any tubeless issues (valves, stems, tool, syringe, bottle of stans, tire boot, etc). After this recent trip, I need to throw a handfull of extra bolts in the open space (M3,4,5,6, torx disc, cleat, etc), I loosened the stem on my bike to turn the bars for the Colorado drive, but found the stem bolts vibrated out (WB cage bolts to the rescue). Edited August 16, 2021 by Mattlikesbikes 1 Quote Link to comment Share on other sites More sharing options...
AustinBike Posted August 16, 2021 Share Posted August 16, 2021 (edited) 7 hours ago, Mattlikesbikes said: So all the back and forth with John and his NM trip/BB issues and tools got me thinking about this tech tip. Back before Performance went out of business I picked up one of these clam shell tool kits. https://www.jensonusa.com/Foundation-Elite-Bike-Tool-Kit-2?pt_source=googleads&pt_medium=cpc&pt_campaign=shopping_us&pt_keyword=&gclid=CjwKCAjwmeiIBhA6EiwA-uaeFeWOA8DQBado5YEz3OtF_Ma7WFPW2A5n2JH785HmLLY9qC2a7854yRoCvVYQAvD_BwE .Just last month I swapped some BB spacers on a buddies bike out in Colorado. He too thought he needed to install all three that came with the BB and had all kinds of issues as a result. Edited August 16, 2021 by AustinBike Quote Link to comment Share on other sites More sharing options...
AustinBike Posted August 16, 2021 Share Posted August 16, 2021 Only a moron would need to remove spacers while on a trip. I added “bike toolbox” to my packing list for future trips. 1 2 Quote Link to comment Share on other sites More sharing options...
Sluggo Posted August 16, 2021 Share Posted August 16, 2021 One of my bags. Quote Link to comment Share on other sites More sharing options...
AntonioGG Posted August 16, 2021 Share Posted August 16, 2021 (edited) I just take some of the tools that are hanging and put them into my plastic Craftsman toolbox for any "away" bike trip (>= 1hr drive). That includes my folding bike stand since I don't have one of those fancy car bike racks that double as a stand. Edited August 16, 2021 by AntonioGG Quote Link to comment Share on other sites More sharing options...
mack_turtle Posted August 17, 2021 Share Posted August 17, 2021 38 minutes ago, AntonioGG said: I just take some of the tools that are hanging and put them into my plastic Craftsman toolbox for any "away" bike trip (>= 1hr drive). That includes my folding bike stand since I don't have one of those fancy car bike racks that double as a stand. Don't forget your BB cup tool! You never know when you'll need that. Quote Link to comment Share on other sites More sharing options...
AustinBike Posted August 17, 2021 Share Posted August 17, 2021 57 minutes ago, mack_turtle said: Don't forget your BB cup tool! You never know when you'll need that. I think I will have an extra one when I get home. 95% sure I have at least two at home and the one I just bought is a keeper (Park). Quote Link to comment Share on other sites More sharing options...
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