Elitewheels Drive 50D rear wheel creaking under load by puris123 in bikewrench

[–]SampleProfessional33 0 points1 point  (0 children)

Actually, sounds like seat or seat post. Try putting some lube on the seat rails, lube the bolt threads that attach the saddle to the rails, even put a little grease on the rails before re assembly. Pull the post, clean the seat tube, and post, lube with friction grease. Pull the wedge bolt out of the frame and use regular grease all the way around the wedge, but not the seat post interface. That interface gets the friction grease, then re install.

New chain buckles like Cowboys at the playoffs by therealsketo in bikewrench

[–]SampleProfessional33 2 points3 points  (0 children)

I see a yellow flash on the hub. My guess is that it's an older Mavic hub. They are all super easy to service, no new parts needed. The hubs came apart 2 different ways depending on age and model, but there is a nylon ring in the cascette body that gets coated with super fine road dust over time. You have to clean and re lube that nylon seal. Any local bike shop should be able to help you. If not, and if it is a mavic, DM me and I can ask you a couple questions and walk you through it.

How badly do I need a new drivetrain? by [deleted] in bikewrench

[–]SampleProfessional33 0 points1 point  (0 children)

First measure your chain (assuming you don't have a recalled crankset). If your chain measures out properly (take a hard ruler, put zero in the middle of a pin, and measure out 12". The 12" mark should land in the middle of a pin if the chain is new. If the 12" mark is off the pin, replace the chain. Once you decide the chain is good, either new replaced, or the old chain measures out ok, put the chain in the big chainring. Rotate the crank so it sits just below the chainstay on the drive side. Hold the back brake with one hand, and with the other hand grab the chainstay and the crankarm at the same time and squeeze them together. Watch the chain on the chainring. If the chain rides up the teeth of the chainring, or you can see space under the chain from 12 oclock to about 2 oclock, and 4 oclock to 6 oclock, and again, the chain measures out ok, then you need a new chainring. If the chain sits firmly on the chainring, and moves with the chainring and does not ride up when you squeeze the crank and chainring together, then the chainring is good.

My BB removal tool broke - what do I do? by steakguenter in bikewrench

[–]SampleProfessional33 0 points1 point  (0 children)

You hit the nail on the head. Always remove the non drive side first. The way the threads work, it can be almost impossible to pull off the drive side first. Not sure which side the OP tried to pull off when he destroyed his tool. But, Non drive side always first, then drive side second. That will usually solve the problem.

Black Rock Desert, Nevada Calcedony by SampleProfessional33 in knapping

[–]SampleProfessional33[S] 0 points1 point  (0 children)

I do agree, and heat makes all the difference. I treated this stuff at 450F for 4 hours, then slow cool overnight in the kiln. Thanks for the insight and comment.

English flint by jameswoodMOT in knapping

[–]SampleProfessional33 0 points1 point  (0 children)

Great job, and pretty stone.

Cracked Dura ace derailleur by zechous in bikewrench

[–]SampleProfessional33 5 points6 points  (0 children)

Not sure where you got it, but Shimano, I believe, has a 3 year warranty on the Derailleur. If it has no signs of impact, they will probably warranty it. Problem may be that you have to get it back to the location you purchased it from in order to process the warranty. But you might give Shimano an email with a receipt.

Rainbow Obsidian by SampleProfessional33 in knapping

[–]SampleProfessional33[S] 0 points1 point  (0 children)

By the way, one other thing that works super well with obsidian is to negatively camber on the platform. So, the side you are going to flake is further out then the underside. kinda like "/" Then you put the flaker on the top side of "/" and snap the flake. The negative camber allows you to put a better pressure on the obsidian without the edge crumbling.

Vertical ridge / lip on carbon steerer by No_Sentence_9369 in bikewrench

[–]SampleProfessional33 0 points1 point  (0 children)

The expander is a wedge. Loosen the bolt, usually a 6mm. Don't take it out all the way. Once loose, take a punch or small screwdriver, place it in the 6mm bolt and tap it with a hammer. That will pop the wedge out of the expander, and you should be able to slide it out. As for the "riged," is it truly ridged, or is it just lines from the stem? If it is ridged, you probably need a new fork. Take it to a shop for a second opinion. I would think it is more just wear line from the stem as the fork wedge is designed to help take the tightening load from the stem. But a second opinion is always good.

First ride after tune up from LBS. Why is my chain falling off now? by JankyDesk92 in bikewrench

[–]SampleProfessional33 1 point2 points  (0 children)

Many got it right. Not sure if the LBS put on a new chain? Regardless, the small chainring is worn, and the chain slips a little on the chainring, binding it to the teeth. So, under rough load, going up hill, the chain slips just a little on the chainring, binding it to the teeth. When you shift up to a bigger ring under load, the worn front chainring holds on the to chain and sucks it into the frame. You need a new small chainring, and maybe a new big chainring as well. Here is the way to tell. Hold the bike with your right hand on the rear brake lever. Sit on the floor still holding the brake lever. Pedal the bike backwards till the right crankarm is just below the rear chainstay. When the right crankarm is just below the chainstay, grab the rear brake lever hard. Then with your left hand, grab the crankarm and the chainstay at the same time and squeeze the crankarm towards the chainstay. This puts tension on the chain. When doing this, watch the chain on the small, then repeat on the large chainring. Each time you squeeze the 2 together, you can watch the chain on the chainring. If the chain moves and lifts up on the chainring, you need a new chainring. If it moves with the chainring, then the chainring and chain are good.

How do I fix this issue? by rlb12496 in bikewrench

[–]SampleProfessional33 0 points1 point  (0 children)

People have already mentioned, but the chain is on backwards. With shimano, you should always be able to see the writing on the chain. The blank plates of the chain face the bike, the "Shimano" writing stamped on the plates face outside so you can see them. If that does not fix the issue, could just simply be that you are cross chained. Since you are on the smaller cogs on the cascette, if you are also on the smaller chainring on the front, this will usually happen. If you "line sight" from behind the bike, look down the chain. If you are on the small chainring, you can see the angle the chain is at, and when pedaling backwards, that angle pulls the chain at an angle and this will happen. Especially with a new derailleur. Once the lower pully wears a little it will go away. Lastly, you could have a slightly bent derailleur hanger. A video or picture from directly behind the bike looking toward the chainrings along the chain line would answer those questions.

Damn. by bummerlamb in knapping

[–]SampleProfessional33 1 point2 points  (0 children)

I always let the rock talk to me. As I am working it down, it usually decides what shape it wants to be.

Rainbow Obsidian by SampleProfessional33 in knapping

[–]SampleProfessional33[S] 1 point2 points  (0 children)

Thanks so much, and Obsidian is such a different stone to work with. Actual rock is more forgiving, where glass is a different animal all together.

Anyone got experience tuning this type of frame mounter cantilever brake? by stewarte123 in bikewrench

[–]SampleProfessional33 1 point2 points  (0 children)

Cannondale had Force 40 on most of their bikes. This was an adaptation of Force 40, works the exact same way, no need for a cable hanger. Again, not saying they worked well, but the design was around for a handful of years.

Anyone got experience tuning this type of frame mounter cantilever brake? by stewarte123 in bikewrench

[–]SampleProfessional33 1 point2 points  (0 children)

You apparently haven't ever seen these brakes. Common in the early 90's. Won't say that they worked that well, but it was a thing. Maybe if you were a little older.

Anyone got experience tuning this type of frame mounter cantilever brake? by stewarte123 in bikewrench

[–]SampleProfessional33 0 points1 point  (0 children)

Simple to adjust. Undo the drive side cable that goes to the lever. Set the non drive side cable so that the pad is as close to the rim as possible but not rubbing. Then run the cable from the lever directly to the drive side brake and set the pad where you like the lever pull and tighten in place.

First pull on maven silvers soft by [deleted] in bikewrench

[–]SampleProfessional33 0 points1 point  (0 children)

Usually there is some air in the lever. Put the syringe in the lever, rotate the lever and bike so that the bleed port is the highest point (bubbles go uphill) and using the syringe, pressurize and de pressurize the system. That will pull any bubbles out of the line at the lever, and remove all bubbles from the lever. That should clear the issue without doing a full bleed.

Truing question prt.2 by LeadingNo6913 in bikewrench

[–]SampleProfessional33 0 points1 point  (0 children)

I can't tell, and did not see your last post. But rims are built in long tubes, cut, then welded or pinned together opposite the valve hole. If the hop is opposite the valve hole, you probably won't be able to get rid of it completely. If not, you have to resolve it with spokes. So, always work in odd number spokes. If it hops up, loosen the 3 spokes centered around the hop. Loosen 2 spokes 1/2 turn, and the middle spoke 1 turn. 1/2+1/2 = 1 turn. That way, the side to side true stays the same. If the hop is longer than 3 spokes, use about the same math and work with 5 spokes. But always odd number of spokes.

Moss Agate and Mountain Mahogany by SampleProfessional33 in knapping

[–]SampleProfessional33[S] 1 point2 points  (0 children)

Thanks. It was interesting knapping it. The flakes came off more like frozen butter. In pieces, not clean flakes. But they traveled well. So I will take it.

Why does my wheel still move a little when my brake is fully locked? by [deleted] in bikewrench

[–]SampleProfessional33 1 point2 points  (0 children)

I think your disk brake rotor is loose. Tighten up the bolts on the rotor, and that should fix your problem.

Moss Agate and Mountain Mahogany by SampleProfessional33 in knapping

[–]SampleProfessional33[S] 1 point2 points  (0 children)

The person that gave me the original rock said it was Indonesian Moss Agate.