Sunday, May 24, 2015

Beach Cruiser Klunker / Rat Rod Project pt.1 - Coaster Brake Chronicles & Truing Front

Little by little I've started to attack the mechanical issues on Monty the Klunker/RatRod/BoardBike. Something I was really suprised about was how loose the front spokes were. The rear spokes aren't that loose at all, and the front wheel of a beach cruiser isn't exactly a high stress area, so who knows how they got that way. Maybe there was a basket attached to the front at some point which supported some heavy lifting, I dunno. Anyway I got it sorted out proper. Started out just tightening the spokes while it was still in the fork, but eventually stopped being lazy and broke out Ye Olde Truing Stand. What you don't see here is that I took a pretty good amount of time to wire brush the rust out of the inside of the rim, which surely would have caused some flats.



Days went by and the weekend came. The next and probably most major mechanical issue to be attacked was the rear hub / Bendix coaster brake. The hub was not engaging in either direction, it would not drive or brake, and turning the sprocket in either direction was crazy hard. Thankfully it was not completely seized up though. During my time at Golden Ring Bicycle Shop back in Baltimore, I repaired a zillion Bendix and Shimano coaster brakes, and usually it was a case of the parts being fine, but the lubrication inside of the hub being completely gummed up and making all the parts actually stick together. My boss back in Baltimore told me that the reason this happens is that grease actually contains a solvent as one of the ingredients and eventually the solvent will eat away at the actual portions of the grease that make it slippery, leaving a sticky mess that can actually harden considerably if left to do so. I was pretty sure this was the issue with this hub. I hadn't overhauled a coaster in 20 years but it was time to dig in.



Not sure what the exact model of Bendix coaster brake this is. The bike is from 1981. If you need to ID a Bendix coaster brake hop over to this site and take a look.

The axle threads are in great condition so the nuts came off fine which is a bonus. I can't tell you how many of these things I've had to work on where the axles have been victims of many accidents or the bike just being thrown down when some kid was done riding it, so the threads are jacked up out near the edges. That always makes it a pain in the butt. I got lucky I guess. Twenty teeth on the rear sprocket.


Snap ring and dust cover of the drive side came off easily. The next part is where I started to run into some difficulty. I wanted to remove everything by loosening the cone and lock nut on the drive side. For some reason I remember that this was the easier way to do this repair when it came to the reassembly phase. Unfortunately I am not equipped with cone wrenches that will fit this wheel, so I kind of had to work with what it would allow me to do. Of course this meant that it wanted to be disassembled by the brake arm side. Okay, I can deal with that I guess. The next problem was that I do not have one of these:


For those of you that don't know, this tool is called an Axle Vice. The concept here is that the aluminum inner pads are softer than the steel axle, so you can put this tool in a bench vice, then insert the axle in it, then clamp down as hard as you want because the aluminum will bite into the threads but will not crush them. Awesome right?! However, since I am a Low Budget Soul Rider, I don't have every freakin tool under the sun, so I had to improvise. Hmmmm...let's see...maybe I have some aluminum around here somewhere...let me me think. Oh right, I have a BUNCH of aluminum...


Aluminum BEER CANS. That's right, I folded over a can a few times and used just enough pressure on the vice to get it to work. The whole thing had me laughing at my geniusness. NOTE: I do NOT recommend trying this yourself. Spring for the axle vice it will be worth it. If I ever have to do another axle related repair I'm gonna. This approach was actually pretty risky and I could have really cost myself some time and money if I'd have screwed up the threads.



Now we are starting to get into the meat of things. That white stuff on the inside of this part is basically a hard crumbly powder that used to be nice slippery white lithium grease. The brown stuff was so sticky I am not actually using any pinch pressure to hold it up, it is just sticking to my thumb and finger.


The inside of the hib was ridiculous. Everything just sticking together like crazy. The pic above is the brake arm side. The pic below is the drive side. It took a while to get the drive side disassembled because there is a component inside that has some very deep threads which slides a mechanism horizontally inside the hub to activate the brake or drive the wheel. That component had become stuck in a position where the threads wouldn't egage. I finally had to break out some car brake cleaner to get the pieces loos enough to move at all, and then had to work at it about another 10 mins to get them apart. Very relieved once that part was over with, because after that I was sure no parts were actually broken.


Here are pretty much all the parts except the axle and brake are side bearing (which was still in the vice) before cleaning.


The brake shoes. yeah that "grease" is over 20 years old, it is disgusting.



The component above with the super deep threads is actually three pieces and threads into the component in the top right. These were the pieces that were stuck together so bad that I had trouble getting them out.


The hub after using car brake cleaner to free the stuck parts, but before deep cleaning it. The brown gunk on the inner ridge got totally removed.


A close up view of my LBSR Beer Can Axle Vice® after use. Now to the Cleaning and reassembly phase.

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My brother recently replaced practically the entire top end of his truck motor, and as part of that project he added a real deal parts washer to the workshop. This thing is super rad. It pumps a continuous flow of solvent into the basin and you can get the parts super scrubbed without using a bunch of aerosol crap. In this case we are using kerosene. Had to be kind of careful, super flammable. I did wheel it outside though to lessen the fumes.



Here are the parts after cleaning. Note that I was not going for a full on restoration type cleaning here. That would be outside the scope of this project. Keeping the patina of the old parts is important to the rat-roddiness of this build, but I wanted all of the working surfaces to be dialed in, and it worked out well. 



Remember I was saying that I wanted to take it apart from the drive side because putting it back together would be much easier? Yeah well, I was right. When you do it from the drive side, you can sort of pre-assemble the inner and the brake shoes using new grease to sort of stick everything together, then slide the entire mechanism inside the hub in one shot. Unfortunately it is not that easy if you have disassembled it the way I had to. i would love to have gotten some photos of the reassembly process, but by this time I had had a bunch of beers, and once I started putting new grease on everything, I didn't want to get it all over the camera, because my fingers where covered in it. Also, getting it back together from the non-drive side was very tricky and once I got the brake shoes in place I had to keep the momentum going because if just one of them would move out of place I'd have to take the whole thing back apart and start the reassembly over. So I kept on pushing.


Sorry the final phot is a little blurry. By this time I was a little blurry too. But even in the blurry pic you can tel that it is much cleaner than when I started. I still had to put on the brake arm and lock nut at this point.

When it was all done I picked it up and checked it to see if the drive would engage, and if the brakes worked. Totally solid!

So, I can still rock a coaster brake overhaul after all these years. Yeah!

Sunday, May 17, 2015

Beach Cruiser Klunker / Rat Rod Project pt.1 - The Finding

I've been wanting to build a rat rodded out cruiser or a klunker MTB for at least a few years year, so I have been keeping my eye out for a base bike. In 2013 I had found a schwinn back in the woods at Haw Creek, but itwas just waaaay too rusted out to recover so it ended up on the junk pile. Time passed. Then the other day on the way to work I saw a beach cruiser just laying in the grass in front of a Rite Aid on a busy intersection on my way to work. I immediately pulled into the parking lot and scoped it out. Although it wasn't clear how or why the bike got there, it was definitely not rideable and I suspect it was put there on purpose for someone to find. That someone was me! I needed to get to work but I was able to call my Dad and wait for him to arrive with the truck and take it home.

 It's a Murray Montery 26". It was manufactured in Lawrenceburg, TN approximately 1981 and loads of the parts are also made In USA. Here's what it looked like brand new...


It's actually not in to bad condition compared to the Schwinn. I was laughing when I found it because it had a bunch of sticker bush remnants all tangled up in it. Below are a few pics of the general condition/rust/patina.




Wow a 3/8" front wheel axle with safety washers. I'm gonna need to find a supplier who carries Wald parts I guess.



The rear sprocket won't engage or brake. It's a Bendix coaster brake, which I have rebuilt hundreds of, but not for at least 25 years (wow I'm old!). I'm pretty sure this one can be recovered. Usually when one is behaving like this it is because the grease inside has broken down and is actually sticky, so it is not allow the parts inside to move freely, and the brake/drive mechanism gets stuck between the drive side and the brake side. Future post will be the disassembly cleaning and reassembly. I can't believe I am saying this but I am actually looking forward to it!




The rust on the frame is perfect Rat Rod bizness. Not too much, not too little.


Here you can see the bent pedal on the non drive side.You can also see that the crank Hanger tube isn't really a tube! It is a rolled piece of sheet metal. The part towards the back that looks like a seam is in fact just that. Murray, I am sure you did this as a cost saving measure but it was pretty dumb. I got a good laugh out of the kickstand being the part of the bike that is in the best condition.


CAUTION: This bicycle is NOT designed for stunt riding or Moto-cross Track USE.



The first step of the process was to see if I could crack all of the different nits and bolts free. This one went waaaaay better than the Schwinn, on which I never got a single nut to crack. Monty was pretty cooperative though. I was thinking the hardest would be the big crank nut, but it came loose with practically no trouble after just a bit of wire brushing and adding some penetrating oil. I still haven't taken it completely off but I got it far enough to know it will not be a problem. The seat post came out with no problems.


The tubes of course are not holding air, but that was expected. The spokes on the front wheel are reaaaallly loose which is kind of strange, but it'll give me an excuse to break out the truing stand. Since I was messing around with it yesterday I figured I would do a bit of quick prototyping with some parts. Check out how simply swapping to a different seat changes the whole personality of the bike.


Time to get rid of the foamies and see what kind of handlebar options may be fun...



A simple flop might be nice, but it really will work better once converted to a nice long flat stem by way of a threadless stem adapter like the one I used on Ye Olde GT Talera.



Decided to get wild and see what would happen if we gave the orig bars the bullhorn treatment. I dunno, it may be a little much. Again, I think that this may be a bit different with a long flat stem and maybe sawing the bars off a bit.



Hey let's throw some riser bars on there and see what happens. Yeah man this look was pretty nice and we are getting into klunker territory here. We tried a few variations like putting way angled out front and completely upside down also, but in the end the regular position looked best.


Niece Kaiyah approves heavily!


Now that all the nuts and bolts have been cracked and I've been able to visualize a few things I am more excited than ever about this built. Obvs I've already named him Monty short for Monterey. Once challenge that I will have is that this bike is not set up in any way for handbrakes and if I can't get the coaster running in the orig wheels I am def going to want to use freewheel, but I already have some ideas on how to solve that.
Gonna be fun. Welcome to the family Monty. Low Budget Soul Rider forever.