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Topics - hypophthalmus

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1
Roadcraft / How do you deal with driving at night?
« on: November 19, 2018, 04:27:55 PM »
Particularly out in the country with no street lamps.

Thankfully I've mostly been able to avoid it, but occasionally I have to.

If it's late enough or remote enough that there's practically no traffic, it's fine. But every time there's oncoming traffic, I'm mostly blinded. I deal it with by slowing way down until I can see again, but it's just constant and extremely stressful. Meanwhile, it seems like the other vehicles drive as fast as ever, and I can tell that I'm holding them up.

Part of the problem I think is the hills out here, causing the headlights to be pointed at your face sometimes. A huge problem is the epidemic of poorly designed retrofit bulbs scattering light randomly.

How do you deal with this? Is there just something wrong with my eyes?

3
Roadcraft / Two near misses.
« on: November 10, 2018, 03:34:54 AM »
Thought I'd share two near misses I've had.

One was last September, on a highway exit.  I was the first one stopped at a red light at an intersection going to another major road. I hear a screech, and turn around to see a vehicle come to a hard stop right behind me. Apparently they saw neither me or the traffic light until the last second.

Earlier this night, I was traveling on the rightmost lane of a four lane road. A pickup truck was turning, into the inner lane, and came directly for me. Thankfully I'm paranoid and was paying attention, so I was able to get into the turning lane, out of the way.

It was one of the rare times that accelerating out of danger would have been a good idea. I can't actually remember if I sped up or braked though.

4
Roadcraft / Summer
« on: October 16, 2018, 03:04:35 AM »
seems to have come to abrupt end here in Arkansas.

It's been consistently in the 80's at day and 60's at night up until a few days ago. In the foreseeable future it's going to be 20 degrees colder than that.

I have a 2.5 hour drive ahead of me tomorrow in the mid 40's and I'm a bit nervous.

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Technical | How To / Chinese copy of Shindengen FH020AA rectifier?
« on: September 26, 2018, 06:14:16 PM »
The old type of rectifier/regulators get hot and are prone to failure.

So I bought a cheap chinese copy of the Shindengen FH020AA:
https://www.ebay.com/itm/142796136290

Any thoughts on what I should expect for the quality?

All the reviews I've found of people actually using them seem to be positive. And the bad reviews seem to be exclusively people pointing out that it's not OEM.

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I thought it might be interesting to some to share my experience going from a scooter to a motorcycle. Although it sounds like most of you went the other way. I've made a few threads for decision making that I could reply to, but I think it better to start a new thread rather than revive one of those.

I drove a Vino 125 for about 6 years until it was stolen. I was intent on buying the absolute smallest vehicle I could. I might have gone with the 50, except I didn't think it would be fast enough.

I replaced it with a People 250 and drove that for 4 years until the engine got destroyed.

I was fairly particular about choosing the People 250. I loved the aesthetics. I wanted the large wheels, the flat floorboard. The radiator seemed to be located in the best possibly place. I had previous experience with one before, and new how comfortable and powerful it was, and and how high the quality was. There's really nothing quite like it -- and it seems to me they made some very questionable decisions in the later revisions.

After the engine died, I became aware of some of the problems with owning this bike, as I was stuck.

Rebuilding it would have been very expensive and risky. The piston shattered and the crankcase was full of fragments. Ever sweep up broken glass and then step on a piece a month later?

There were no used engines that wouldn't be imported from Italy. And so far, no interest whatsoever in buying the bike from me.

The cost of even a small used bike is very significant for me, so I narrowed my choices to bikes with plenty of used parts. And no water cooling -- too many ways to lead to catastrophic failure.

The XV250 is very popular, and basically unchanged for roughly 30 years. So plenty of used bikes, and plenty of used affordable parts. Moreover, there's a ton of quality aftermarket parts. Carburetors, ignition components, cylinders, all extremely cheap new. So basically as long as the frame stays in one piece, I don't see any reason I can't just keep replacing things as they go. To me, that's incredible.

There's features on scooters that I took for granted that aren't unusual to be absent from motorcycles: oil pressure light, center stand, fuel gauge, turn signal clicks. STILL no tachometer, and still no hazard lights.

Compared to scooters, working on it is amazingly easy. No plastic removal, and what does need to come off sometimes (seat, gas tank, covers) is trivial to do. Everything is extremely accessible.

The fuel economy is better. This has less, it seems, to do with scooters vs motorcycles, and more to do with this particular bike. An average tank seems to be about 80mpg. My best so far was 98mpg. Most 250 motorcycles it sounds like are on par with scooters though, somewhere in the 60's.

The differences in the way it drives is pretty surprising. Everything I've read says that a motorcycle should have a huge advantage in not having the weight of the engine involved in the swingarm. But the People 250 is much more well cushioned. Thankfully, I live in place with excellent roads now, so it doesn't matter much.

There's much more vibration on the XV250. It seems pretty similar in power, but the People 250 felt much more effortless getting up to speed. It probably is able to accelerate faster, if I were more willing to push the RPMs in lower gears.

And the seat is noticably worse on the XV250, reminiscent of the Vino 125. For longer trips, on the People 250, the limit on how far I could go was how much my brain could take. On the XV250, after a couple hours the seat gets pretty hard and my legs need to get unbent. I bought a new seat (cheap, aftermarket) that seems much better, but I haven't taken it for a long trip yet.

The transmission is obviously a huge difference. While I already understood basically how to do it, more or less, I underestimated the amount of skill needed or the complexity. I'm still learning, months later, and there's still a bit that I'm unclear about. Engine braking is a godsend on the hills around here. And instead of having to preset how the transmission behaves with rollers, I can simply select a gear for efficiency or power. The gearing can also be modified a bit with sprockets.

In terms of complexity and repair, the scooters have a pretty significant advantage here I think. It doesn't sound like it would be that much work to completely rebuild a CVT which are simple devices. Manual transmissions are relatively complex, and working on them involves completely disassembling the engine.

The XV250 is about 70 pounds lighter than the People 250. This is particularly welcome on the steep gravel/dirt forest service roads, although I can't ride them side by side to be clear on how this changes things.

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Roadcraft / Dumb lanky hell squirrels.
« on: July 06, 2018, 02:57:28 AM »
I drove out into the national forest today, but I forgot to be on the lookout for deer.

By the time I saw the first batch, I didn't have enough time to properly react -- our fates were up to them. Thankfully they decided to run away from the road.

The next time, I was scanning ahead for them and came to a crawl when I saw them. They decided running across the road was the best exit, but they had plenty of space to do so.

There were lots more deer when I was hiking, but the only concern there is making sure they aren't black bears.

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General Discussion / How to track down electrical/charging problems?
« on: June 21, 2018, 03:59:33 AM »
Okay, this has nothing to do with Kymco (it's a Yamaha XV250), but I'm stuck and exhausted the relevant forum. In any case, I think most bikes have a pretty similar charging system.

I have two electrical problems, and I'm not sure if they're related:

One problem is that when the turn signals flash, every other light dims. These lights are fed on different positive lines after the ignition switch, but they share a ground.

The other problem is a charging voltage of up to 13.2v, measured at the battery  -- low.

It looks like (according the wiring diagram, and what I can find) all the components are grounded to the frame through a single ground point. That point seems to be good as far as I can tell. No difference cleaning it up, no difference moving it to negative battery post.

Stator resistance measures good -- all about 0.4 ohms between the leads. It's a tiny bit higher than what the manual says, but it's possible that the stator just changed. No continuity to ground. VAC output is also good, 15v idle, 40v light throttle.

I did some kind of test for the rectifier that I found online, measuring with the diode function -- I don't remember the details, but it apparently passed.

The VDC output measured at the rectifier gets is up to 14.0v. Much better. If I measure with one lead at the battery, one at the rectifier (positive/negative doesn't matter), I get 13.8.

My best guess is that there's a bad wire or a short somewhere, but I just don't know. And I don't know how to find it if there is.

9
Roadcraft / Self-driving uber car killed a crossing pedestrian.
« on: March 22, 2018, 10:00:41 PM »
This is a topic that sort of irks me, and I have a feeling that anyone on two wheels are going to disproportionately at risk from this technology. I'm just too familiar with computers to have any faith in a computer program having the reliability to drive on public roads, especially off the interstate. This combined with so many people saying that soon manually operated cars will be phased out / illegal.

A while back, a self driving car collided with a truck, mistaking it for a sign. The exact sort of thing you might expect.

Recently, a self driving car from Uber collided with a pedestrian pushing a bicycle across a road.

The initial reports were simply UNTRUE: that a pedestrian abruptly exited the median into traffic. In fact she was just finishing crossing three lanes when she was hit. The video shows it to be very dark, but I'm quite sure that human eyes would have seen much more. Even in the video though, I detected movement in the dark that would have alerted me about three seconds prior to impact.

The car evidently NEVER detected her, AT ALL! Even when she was in the headlights (that it was outdriving). Never slowed down in the least, never swerved.

What if it had been a bicycle legally driving in its lane? Small scooter? Would it have picked up a large scooter? Who knows.

Here's the video:

10
General Discussion / Minivan ramp
« on: February 26, 2018, 09:43:51 PM »
I'm preparing to try to load a bike into the back of a minivan.

For the ramp, the most economical should be to build one out of wood, southern yellow pine to be exact. I'm estimating it'll cost about $30 in lumber.

I've attached a drawing of how I'm thinking of doing it. It's kind of crude, but more or less to scale.

I'd start with a 2x10x12 board (shown in blue).
To brace it, I'd use a 2x6x10 board (shown in pink) on its side underneath with plenty of screws.
Because 9.5 inches is a pretty narrow ramp and I'm paranoid, I'll cut a second 2x6x10 in half to make two 1x6x10's, and screw them into the side of the ramp to make guard rails (shown in green). Hopefully that will prevent it from rolling off.

The incline at 12 feet looks like it should be quite manageable, even on flat ground.
I'm still not sure how I'm going to keep it from sliding. There's a lip on the bottom of the rear opening of the van that I could hook over somehow. Or maybe put a hole in the ramp that I can push a tow strap or two through.

This isn't a terrible idea, is it?

11
General Discussion / Waiting for two wheels as the warmth comes back.
« on: February 20, 2018, 06:20:36 AM »
This post is firmly in the category of indulgent complaining, so I apologize in advance.

My scooter's engine died last July. At the time I was pretty preoccupied with finding place to live in Arkansas. After falling in love with it, I had been looking for somewhere suitable for quite some time -- endlessly waiting it seemed. I was actually on my way to check out where we finally did move to when the engine died.

Now it's finally warming up again (winter is always difficult to suffer through). And the warmer it gets, the more I'm dying to explore this area on two wheels.

I'm set on a specific bike, the Yamaha XV250, for various reasons: it's air-cooled, has a twin engine, gets 80+ mpg, it's light, basically unchanged for almost 30 years, and elegant looking.

I'm firmly in the reasonably-good-deal used market, and finally have enough money for as much, but there's nothing that qualifies nearby. There's definitely plenty elsewhere in the country... some even good enough to ship in, if they weren't firm on selling locally. So again it's slow waiting.

12
For Sale / Parting out 2007 People 250
« on: February 16, 2018, 10:55:41 PM »
Edit:
No responses whatsoever on selling this, so I'm parting it out.

The engine is dead; the rod is bent, piston jammed in the cylinder, crankcase full of metal fragments. The head is gone. If I could find a used engine, I'd love to get it working again, but they seem to be hard to come by.

Battery is still apparently functioning (it fired up a different bike right away), but I don't have much faith in it. I have a brand new starter solenoid for it. The rest of the electrical is good.

Comestically: has various light scratches and wear from use. The seat has rips from bears and raccoons trying to burrow through it when I was camping.

The windshield is cloudy, and there's some corrosion on the windshield holder where the mirrors screw in.

I still have the exhaust. It's missing the the cover on the pipe, and has been welded back together, but it works good.

Transmission is good, and has Dr Pulley sliders (21g). I also have the original rollers. The belt is almost new.

The tires are basically new Michelin city grips. The brake pads are basically new as well. The paint on the wheels has small nicks from tire changes, but it's not leaking.

The carburetor was working good when it ran.

The gauges work, but the clock doesn't.

Frame, suspension, fuel tank are good.

I believe I have brand new brake pads somewhere.

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General Discussion / Retrofiting a 300cc motor on a 250cc scooter.
« on: February 05, 2018, 07:17:23 AM »
This is probably more of a speculative question than anything since it'd be an expensive experiment, but I'm curious.

The People GTI 300 engine looks an awful lot like the People 250 engine. What are the chances it might actually fit on a People 250?

Potential issues I can think of:

Obviously, geometry. The engines seem to have the same holes/bushings in the same places. But they could be slightly different.

I'm thinking the People 250 carburetor might just bolt on fine, in place of the 300 fuel injection. But would it work right on the different/larger engine?

The exhaust might be oriented differently -- not necessarily a huge issue.

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People 250 / Part out, sell? Something else?
« on: December 10, 2017, 09:01:16 PM »
Since I'm mostly convinced that neither repair nor engine replacement are viable for my People 250 with a blown motor, I'm considering other options.

I could possibly part it out. But I wonder how much I would actually make after shipping large, heavy, awkward parts. Assuming anyone actually wants them.

I could attempt to sell the entire bike, hoping that there's someone else nearby that might want it for parts. I'm not sure how much I should charge for that though? And being a pretty uncommon bike, I'm not sure if I'd find a buyer.

Or some other option that I'm not aware of?

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General Discussion / How does a 250cc cruiser compare to a 250cc scooter?
« on: December 01, 2017, 06:28:52 PM »
Can anyone provide some insight in how a 250cc cruiser compares to a 250cc scooter? Especially in terms of acceleration and long distance comfort?

I'm seriously considering getting a Yamaha XV250, but I don't want to be surprised to find it less responsive and less comfortable on long trips than my People 250 was.

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