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DEEP TROUBLE: Runaway Motorcycle on a Costa Rica Mountain Road

DEEP TROUBLE: Runaway Motorcycle on a Costa Rica Mountain Road

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About this episode

Seth Cooper’s Costa Rica nightmare starts with a rented 2017 KTM 690 Enduro R that arrives with red flags—“the rear tire being, you know, maybe at 5% life left in it,” “the check engine light was on,” and “Just had zeros across it.” On a steep, switchback mountain descent, shifting and traction issues escalate into brake failure: “I smashed the rear brake and it went flat.” With no usable braking, he bails, weighs crash types, and the bike ultimately ends up with “it snapped the triple clamp.”

Cars: Ford Edge
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Technical Too Afraid to Ask
Car

74 Yamaha TY80

"I mean, I grew up in the dirt. My first bike was I think a 74 Yamaha TY80, [289.4s] which was technically a trials bike when they still had seats."

The Yamaha TY80 is a small Yamaha dirt bike from the 1970s. He’s mentioning it because it was his first bike and it helped shape how he learned to ride in the dirt.

Term

trials bike

"My first bike was I think a 74 Yamaha TY80, [289.4s] which was technically a trials bike when they still had seats."

A trials bike is made for slow, technical riding—like climbing over rocks or riding through tight obstacle courses. It’s less about going fast and more about controlling the bike carefully.

Term

enduro motocross type bikes

"I rode enduro motocross type bikes until probably my early 20s when I realized that [307.9s] I could see a lot more."

Enduro-style riding is off-road riding over longer routes, not just a short track. “Motocross type” usually means more aggressive dirt-bike riding, so the phrase suggests he rode bikes that could do both kinds of dirt fun.

Car

2023 1290 Super Adventure R

"I currently have an older 2001 640 and a 2023 1290 Super Adventure R. Well, let's talk about this trip to Costa Rica."

The KTM 1290 Super Adventure R is a big, powerful “adventure” motorcycle meant for long trips. He mentions his 2023 version as one of the bikes he has while planning this Costa Rica ride.

Car

2017 KTM 690 Enduro R

"This bike was almost 10 years old. What is the bike? It was a 2017 KTM 690 Enduro R. I figured if doing all these creek"

The KTM 690 Enduro R is a lightweight, dirt-focused motorcycle with one main engine cylinder. He picked the 2017 model for his trip because the route has creek crossings and only works well in the dry season.

Term

sprockets in the chain replaced

"the mechanic told me that the bike had to be had to go to the dealership to have the have the sprockets in the chain replaced. He showed me some photos."

A motorcycle uses a chain and gears (sprockets) to send power to the back wheel. If the teeth on the gears get worn down, the chain doesn’t grip as well. That can make the bike feel off, so replacing the worn parts fixes it.

Term

rounded off the teeth on the sprocket

"He said the person who rented it before me had really thrashed it and rounded off the teeth on the sprocket."

If the sprocket teeth get worn down and rounded, the chain can slip or not sit correctly. That wear can also make the chain stretch faster. It’s a clue the bike was ridden hard or not maintained well.

Term

rear fender

"when the bike finally showed up, they had a few more things to do and, you know, I noticed that the rear fender was zip tied together"

The rear fender is the part above the back tire that helps keep water and dirt from spraying up. If it’s held on with zip ties, it likely means it was broken and not fixed properly. That’s a sign the bike may have other problems too.

Term

rear tire being, you know, maybe at 5% life left in it

"of course the rear tire being, you know, maybe at 5% life left in it. It's worn out."

Tire life refers to how much tread is left. “5% life left” means the tire is almost bald, so it won’t grip as well. On wet or rough roads, that can be dangerous.

Term

solid center contact patch

"I think it almost had a solid center contact patch, but, you know, I'm notorious for getting every possible mile out of tires."

The contact patch is where the tire touches the road. If it’s mostly worn in the center, the tire may not have as much tread on the edges. That can mean less grip when you lean into turns.

Term

dash wasn't registering my speed. Just had zeros across it.

"I noticed a few more things like the dash wasn't registering my speed. Just had zeros across it."

If your speedometer shows 0 even when you’re moving, the bike isn’t getting the speed signal. That makes it hard to know how fast you’re going. It can also mean something is wrong with the bike’s sensors or wiring.

Term

check engine light

"The check engine light was on. I thought I felt the rear bearing like starting to get, when I was on the highway, getting a, you know, getting a little loose."

The check engine light means the bike’s computer found a problem. Sometimes it’s small, but it can also affect how the engine runs. If it’s on, you should get it checked.

Term

rear bearing

"I thought I felt the rear bearing like starting to get, when I was on the highway, getting a, you know, getting a little loose."

A bearing helps the wheel spin smoothly. If a rear bearing is wearing out, the wheel can start to feel loose or cause vibration. That’s serious because it can affect control and could fail.

Term

chain had stretched quite a bit

"After, by the time I had gotten back down to my, to the town where I live, the chain had stretched quite a bit. And so I just stopped by a local motor shop"

A motorcycle chain can wear and stretch over time. When it stretches, it may need tightening and can change how the bike pulls. If it stretches a lot quickly, something about the chain setup or wear history may be off.

Term

tighten it up

"And so I just stopped by a local motor shop in the town there and had them tighten it up. And they also verified that the, you know, that the wheel, one of the"

They adjusted the chain so it has the right amount of slack. Too loose can cause problems and too tight can wear things out faster. Getting it set correctly helps the chain last and stay safe.

Term

hairpin, switchbacks

"It's hairpin, switchbacks, livestock running around loose, like a very very rural agricultural area on the side of a mountain."

Hairpins are super tight U-turns. Switchbacks are lots of those tight turns in a row, usually on steep roads where the road zigzags up or down a hill.

Term

downshift

"So I made it, I made it to the top where I was downshift. And you know, I thought I just missed it and I tried again, but just hit air."

Downshifting means switching to a lower gear so the bike has more pulling power. Riders do it when going uphill or slowing down for a turn.

Term

gear shifter

"And I, you know, I slowed down and looked down and the, and the gear shifter was just hanging there on the, on the shaft."

The gear shifter is what you move to change gears on the bike. If it’s loose or not attached correctly, you can’t shift properly.

Term

set screw

"And I, you know, I slowed down and looked down and the, and the gear shifter was just hanging there on the, on the shaft. And so I pulled over to check this out and the set screw had backed out a little bit."

A set screw is a tiny bolt that helps hold a part firmly onto a shaft. If it loosens, the part can move or come off its proper position.

Term

third gear

"So at that point, I knew I couldn't keep going. The bike was in third gear when this happened. I mean, I could have jammed it down into first, but I didn't want to, you know,"

Third gear is one of the bike’s gear ratios. It’s usually used for steady climbing or moderate speed—if you can’t shift, you’re stuck with that ratio’s limits.

Term

front brake

"So these are the types of slopes that if you stop on the bike and you sit there with the front brake on, it's going to start to slide."

A motorcycle has brakes on both wheels, but the front brake is the one you squeeze at the handlebars. On a super-steep hill, even the front brake may not be enough to stop the bike from sliding if the tires don’t have enough grip. That’s basically a traction problem.

Term

S curves

"So yeah, I mean, extremely steep slopes and, you know, S curves all the way. Right."

S curves are roads that bend left then right (or right then left) like an “S.” On a steep mountain, they’re harder because you’re constantly adjusting your balance and steering. If the road is slippery, it gets even more difficult.

Term

shifter issue

"So would you say, would you think about riding back down now? You know, you have a shifter issue. Are there, are there any other issues with the bikes that you have to deal with?"

A shifter issue means the bike’s gear shifter isn’t working right. On a steep downhill, gears matter because they help control speed without relying only on the brakes. If shifting is unreliable, it can make the descent much harder.

Term

clutch

"I started, I started, you know, rolling down, covering the clutch and the front brake."

The clutch is what lets you smoothly connect and disconnect the engine from the gears. When you’re going very slowly or trying to control a bike on a steep hill, the clutch helps you avoid sudden power changes. It’s one of the main controls riders use for careful speed control.

Term

triple clamp

"and the, in the, in the chassis of the bike would, would rotate on the, on the triple clamp. You know, I had the handlebars in my hand walking it, but the back of the bike would like swing,"

The triple clamp is the part that connects the front forks to the bike’s frame and controls the steering. If the bike starts to rotate around that area, it can swing or change direction in a way that feels out of control. On a steep hill, that can happen when traction is poor.

Term

engine braking

"Right. You're just slipping the clutch as a, as a brake. And is it in third gear still? No, when I dropped it and broke the, broke the front brake lever off, I was able to manipulate it down into second. And, you know, I was, I was still, I was still hesitant about, about messing with that because I, you know, I didn't want to damage that, I didn't want to damage that shaft. My whole, I was still, I was still determined to get that bike to the shop and, and get it repaired and, and, finish this loop. So at this point, like there were some less steep sections at which time I would get, I would just, you know, hop on the bike and try to keep my speed down."

Engine braking means you slow down using the engine instead of the brake pads. It’s like letting the bike’s motor resist rolling forward, which can help on steep hills.

Term

rear brake

"So at this point, like there were some less steep sections at which time I would get, I would just, you know, hop on the bike and try to keep my speed down. I was covering the rear brake quite a bit, which ultimately heated it up to the point where it failed on me."

The rear brake is the brake on the back wheel, usually controlled by your foot. If you use it a lot on a steep downhill, it can get too hot and stop working well.

Term

overheated

"had overheated on the, in the rear and I, you know, I started picking up way more speed than I"

Overheated means the bike got too hot. The rider implies that heat-related problems contributed to the brake/engine situation that led to losing control.

Concept

runaway bike

"You're on a runaway bike down here. I'm on a runaway bike. And so you're in second gear, you have no brakes now."

A runaway bike is a motorcycle that won’t slow down when it should. In this case, the rider lost effective braking, so the bike kept speeding up downhill.

Term

second gear

"And so you're in second gear, you have no brakes now. What were you feeling when you stepped on that brake..."

Second gear is a lower gear that usually helps you get moving and can slow the bike a bit when you’re off the throttle. Here, because the brakes were gone, being in second didn’t help enough to stop the runaway.

Term

kill switch

"Oh, I killed the engine. engine, killed the switch and I kept pumping the brake, but the bike had so much momentum."

The kill switch is a button that shuts the motorcycle’s engine off. In this story, even after using it, the bike still kept rolling because it already had a lot of speed.

Term

Moto boot

"[1382.9s] I just ended up peeling the sole right off of my, my Moto boot. [1387.7s] It peeled the sole off. These are quality boots."

A “Moto boot” is motorcycle riding footwear designed to protect the rider’s foot and ankle during crashes and aggressive riding. Here it’s important because the rider uses the boot sole against the road to scrub speed, and it gets destroyed—showing how extreme the forces were.

Brand

Leot

"[1387.7s] It peeled the sole off. These are quality boots. Yeah. Relatively new. These are Leot, [1397.5s] um, like a 4.5 or a five or something."

Leot is a motorcycle gear brand, and the rider mentions their boots to emphasize quality. The fact that the sole still ripped off under extreme sliding forces is used as evidence of how intense the runaway situation was.

Term

flat track

"[1427.8s] So you really are flat track because that's what flat track is. [1430.6s] It's flat track is they step the back end out and they're putting a, [1433.2s] like a steel shod shoe down and sliding it along steel because it's going to do just that."

Flat track is a motorcycle racing discipline run on oval tracks, where riders often slide the bike through turns. The host describes the characteristic technique: stepping the rear end out and using a steel-shod “shoe” to grind along the surface for controlled sliding.

Term

steel shod shoe

"[1430.6s] It's flat track is they step the back end out and they're putting a, [1433.2s] like a steel shod shoe down and sliding it along steel because it's going to do just that."

A “steel shod shoe” refers to the metal-tipped sliding element used in flat track to allow the bike to slide while maintaining control. Because it’s designed for abrasion, it can survive the grinding contact that would otherwise destroy normal footwear or other parts.

Term

handlebars

"[1443.9s] Out of control. I mean, no, you're holding it. [1446.0s] I mean, the only control, the only control that I had was, [1450.0s] was the fact that my hands were on the handlebars and I could steer"

In motorcycle control, the handlebars are the primary interface for steering input. Even when braking and traction are compromised, holding the bars can still provide some ability to aim the bike and keep it upright.

Term

high side

"You know, you're not, you don't have much longer before the thing's probably going to high side on you, or you're going to go sailing off the, off the side of the mountain."

A “high side” is when a motorcycle starts to slide and then suddenly grips again, flipping the rider up off the bike. It’s usually a worse crash than sliding out and falling to the ground.

Term

sailing

"You know, you're not, you don't have much longer before the thing's probably going to high side on you, or you're going to go sailing off the, off the side of the mountain."

Here “sailing” means the bike and rider leave the ground—like getting launched off the road or off the side of a drop. It usually happens when control is lost and there’s no safe way to recover.

Term

bail

"When you say you decided to bail, what does that, what does that look like in your mind at the time, bailing? Finding a soft spot to aim the bike at and try to come off in a way that, that wasn't going to destroy my body."

“Bailing” means choosing to jump off the motorcycle on purpose instead of staying on when a crash is unavoidable. The goal is to land in a way that hurts you less.

Term

low side

"And I thought, you know, maybe I could low side into this corner because I, you know, I have intentionally low-sided, you know, bikes in the dirt, a handful of times."

A “low-side” is when the tires lose grip and the bike slides on the ground, usually with the rider falling more to the side than getting thrown up. It’s often less violent than a high-side, but it can still be dangerous.

Term

ligament damage

"I had some ligament damage in my ankle."

Ligaments are tough bands that help hold a joint in place. If an ankle ligament is damaged, it can make the ankle unstable and may need treatment to heal properly.

Term

torn meniscus

"the worst thing is a torn meniscus in my right knee, which looks like it's going to require an operation to repair."

The meniscus is a piece of cartilage in your knee that helps cushion and stabilize it. If it’s torn, the knee can hurt and may need an operation depending on how bad the tear is.

Term

x-rays

"I didn't go for x-rays. So I don't, I, I assume that one of my fingers was broken."

X-rays are a medical scan doctors use to see bones. The rider says they didn’t get one, so they’re not sure if a finger was actually broken.

Car

KTM 690

"What they've done is they've taken the KTM 690 and they made a cast of it, basically, and they made this six or seven foot hole that, so it fits into like it's a slot."

KTM 690 is a KTM motorcycle model line. Here, it’s mentioned because the ditch was shaped in a way that matches where that bike would end up if it dropped into it.

Car

Ford Edge

"...Rica are the shoulders or the lack thereof or the edge of ditch. Basically, if you drop a tire into this..."

The Ford Edge is a family-sized SUV that’s meant for normal roads and daily use. When the road is rough—like hitting the edge of a ditch—how the tires and suspension respond affects how safe and stable the vehicle feels. That’s why it might be mentioned in a conversation about what happens when a tire drops into a rut.

Concept

frame of your vehicle sitting on the pavement

"Basically, if you drop a tire into this ditch, you're the frame of your vehicle sitting on the pavement and you're not getting out of there without a tow truck."

If you drop into a ditch deep enough, the bike’s main structure can hit the ground. Once that happens, it’s usually stuck and needs a tow truck to get it out safely.

Term

rental

"Like if you were to show up for a rental now and you look at that bike the way it is, just the stuff that you could spot right off."

A “rental” bike is one you borrow from a company. The takeaway is to check it carefully first, because you might not know how well it was maintained.

Term

foot pegs

"One of the first things that I do on a bike is change the foot pegs. Because once you stand up off-road, the connection between your boots and the bike matters."

Foot pegs are where your boots rest when you stand up to ride off-road. Better pegs can help you control the bike more confidently.

Term

shifter was slipping

"When you're at the top of the hill, you found out the shifter was slipping. You couldn't actually, you couldn't shift the gears at all. You were stuck in third gear"

They’re saying the gear shifter didn’t work correctly. Instead of letting them change gears, it failed in a way that left the bike stuck in one gear.

Term

toolkits

"You were stuck in third gear and then you pull the seat off and you find the toolkits gone. Okay. So now you said like, you would have thought to check for a toolkit normally or is this something you think you should have?"

They’re talking about the basic tools that are supposed to be included with the rental bike. Without them, you might not be able to fix a small problem on the spot.

Term

Leatherman

"Like what about bringing your own toolkit? Like what about like, even though you're renting a bike, what about like not necessarily a toolkit, but what about even just like a Leatherman or something like that?"

A Leatherman is a small multi-purpose tool you can carry. The idea is that even a simple tool might let you make a quick fix when something breaks.

Term

torqued

"proper tool and torqued, you know, torqued to the right spec and all, you know, et cetera, et cetera."

“Torqued” means tightened to a specific tightness measurement. Doing it correctly helps keep parts secure and avoids problems from being too loose or too tight.

Term

brake lever

"...you break the brake lever. Would that be a showstopper for you now? Would that be a thing of where you just say, that's it, I can't go any further?"

The brake lever is what you squeeze with your hand to slow the bike down. If it breaks, you may not be able to brake at all, which is a big problem on a steep hill.

Term

drag their brakes

"When it comes to braking on a really steep hill, I think that a lot of times people will drag their brakes and that's a mistake because your brakes will quickly overheat and then you'll find yourself with no brakes."

“Drag their brakes” means holding the brakes slightly on the whole way down. That keeps them hot and can cause them to stop working well when you need them most.

Term

lowest gear

"So when you think of a hill, any time we're on a really steep hill, you're always better off to start in your lowest gear because to try and gear down once you're already gaining speed..."

“Lowest gear” is the gear that makes the bike go slower without needing to force the engine. On a steep hill, using it helps you control your speed without overheating the brakes as fast.

Term

brakes fade

"...especially if your brakes fade, it's just about impossible or very, very difficult. So you start off in your lowest gear and then you use your brakes alternately."

Brake fade is when your brakes start working worse because they get too hot. On a steep downhill, that can happen quickly if you keep braking hard the whole time.

Term

brake fluid

"I was in largely, it was in direct sunlight... the ambient temperature already had the brake fluid warmer than what I would normally have here in the Northeast."

Brake fluid is the fluid that helps your brake lever create stopping power. If it gets too hot, the brakes can feel weak or stop working well.

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