At the Nurburging. NBD.
On a motorcycle with no plastic fairings, the fuel tank and seat define the appearance of the bike. Having already chosen the fuel tank for this project, I set myself to choosing a seat. Modern motorcycles tend to have sloped seats that put the passenger higher than the rider; this gives the bike a rakish, aggressive appearance. Classic bikes though, tend to have seats that are flat and parallel to the ground:
Take a look at the picture above. I’ve loosely mounted the stock seat – notice how aggressive the angle is. Because this project is about backdating the styling of a modern bike, this seat-line had to change. But this wouldn’t be as easy as bolting on a flat seat – the shape of the motorcycle frame would need to be changed.
The stock Ninja 250 frame slopes up away from the rear tire, which means the rear suspension has plenty of room to move. Lowering the back of the frame could result in interference with the rear tire on hard bumps, so I first needed to figure out whether there would be enough rear suspension travel. To accomplish this, I ratcheted the rear end to the trailer (thanks Rob!) and cranked it all the way down. I couldn’t actually crank it hard enough to put the rear on its bumpstop, but I used up most of the travel. This is what I came up with:
With the rear suspension cranked all the way down, I still had about 3″ of extra travel in the rear suspension. That meant that I could lower the rear framerails at least 2″, if not more in a pinch. This might still be an issue later on, but since this isn’t really a two-up bike and I’ll be adding a stiffer rear shock, rear suspension travel should be adequate even with the modification. That settled, I whipped out the angle grinder and went to work:
With the frame chopped to roughly the right height (more cutting will be required later), I started trying out various seats. First I mocked up a seat with cardboard:
Then for fun I tried a spare SV650 seat I had laying around The Future:
It actually turned out pretty cool – a bit streetfighter/bobber-like. Unfortunately that’s not the style I’m looking for on this bike, so I went to Hayward Cycle Salvage where they let me root through their storeroom for seats that might work. I bought four and brought them home:
This is a Honda CL350 seat. It looks fantastic, fits well, and is about the right length. It also has a seat strap, which is a very convenient feature for moving motorcycles around.
This is a CB100(?) seat. It’s in clean condition, but its immediately apparent that it will be too short.
This is another CL 350 seat. This one has a different pattern in the leather, but also looks great. Even before trying the last seat I suspected we had a winner.
This is a seat from a Kawasazki KZ400. I like how the front of it is sloped forward, but the leather feels cheap, and it lacks a seatstrap.
It looks like I’m going to go forward with the CL350 seats. Interestingly enough, the two different ones I bought have different mounting provisions, so it’ll be fun to experiment with them. Here’s another angle on the seat:
PS. Happy New Years!!
A couple months ago, I finally got around to doing a trackday. Even though I had the most awful towing setup known to man, and I only got four hours of sleep the night before, I managed to have a really great time. I didn’t even crash! T and the dogs came with me, and they were very supportive throughout the sometimes stressful experience. Enjoy the pics:
Of course I’m sporting the #26.
Getting ready for tech inspection.
Barreling down the front straight for the first time. What a thrill!
Tipping into Turn 13.
Turn 5 is a blind crest that drops into an off-camber right hander. They call it the Cyclone.
Showing poor body position in Turn 15.
A photograph of the GotBlueMilk print. I think this is Turn 2. Thanks Dito and friends!
My trusty pit crew
The dogs got to eat french fries for lunch that day. The fries gave them food coma.
Get some!
I’m not the terminator, but I’ll be back. Trackdays kick ass.
I knew that I wanted to use a 70′s-ish Japanese standard-style motorcycle fuel tank for this project, but I had no idea how any specific tank would look on the Ninja 250 frame. Originally I had envisioned walking between rows and rows of old fuel tanks at Hayward Cycle Salvage, picking and choosing ones that looked aesthetically and dimensionally correct, but later I decided that I wanted to see how the tanks look on the frame.
So a couple of weeks ago I bought a pair of tanks off of eBay. One of them was a fuel tank from a 1981 CB750SC. This is what it looked like on a complete bike (sample photo):

Note how cruiser-like the CB750SC looks. The vanilla CB750 from the same year looks more like a “standard” bike but the tank is more angular. I want curves, not angles.
Here’s what it looked like when it came out of the box:
It smells like bad gasoline, so it will probably need to be boiled out at some point. I threw it onto the frame for a test fit. It fits surprisingly well!
Of course I haven’t actually modified the tank to fit the frame yet, I just threw the tank on to get an idea of what the final product might look like. I thought it looked fantastic, but I wanted to see how similar it was to the concept sketch I drew, so I superimposed the two images:
As you can see, the CB750SC tank and my concept sketch tank are almost identical in both size and shape. I could hardly believe my eyes! The second tank I bought on eBay hasn’t arrived yet, but I have a good feeling it’s going to go back up on eBay.
Adapting the tank to fit the frame will be my first attempt at sheet metal bodywork. There’s a very good chance it will end in disaster, but sometimes you have to run before you walk.
When T was looking for a starter bike she had three main criteria. The bike had to be light (less than four hundred pounds wet) so that she could keep it upright without using too much arm strength; the bike had to look and feel sporty, because that’s the kind of riding she wants to do; and the engine needed to be small so things wouldn’t get out of hand while she was learning throttle control. What we quickly discovered was that there are very few bikes that fit those demands. Our choices boiled down to “buy a Ninja 250″ or forget it.
Accordingly, “Ninjettes” are very popular starter bikes and are often recommended as such. Among their positive qualities are that they’re cheap and easy to find. But their cheapness and ubiquity are also the worst things about them; they look dated and –seriously– every other chick rides one. Those qualities are bearable if you’re looking to move through the Ninja 250 on the way to a bigger bike, but T wants more character and cachet in her bike. After all, people don’t buy motorcycles to fit in, right?
Enter TFG’s Ninja 250. Over the next five months we’re going to develop a sexier, more beautiful small displacement bike. The goals are to:
- Increase the curb appeal of the bike. Make it attractive, unique, and desirable.
- Upgrade the stock suspension to something that isn’t terrible.
- Do #1 and #2 without spending a fortune.
Rest in peace, Super Sic.
You rode every race like you were fighting for the title.
That courage and fire deserves our respect.
Rule #58 – Always ride like a champion.
Being with T is one of the very best things in my life. Scrump, my MINI, is another. A logical third is our dogs, but we didn’t bring them with us on this trip. Not coincidentally, not having to worry about our dogs for a whole week is also high on the list.
The plan was to have no plan. After three months of incessant studying, writing, and planning in anticipation of the California Bar Exam, we were ready to just wing it. We set a start date, an end date, and a midpoint destination, and started driving. The destination? Vancouver, British Columbia, Canada.
Excited to be on the open road, we almost immediately hit stop and stop traffic. And I’m not kidding, there was some kind of accident up ahead and we were stationary on the highway for about thirty minutes before we decided to make a highly illegal turn across the dusty divider and take a frontage road. Luckily, we got stranded next to an immaculate Z with nice owners. I popped out of the sunroof of the MINI and took some shots.
The rest of the first day was uneventful. We made it as far as Redding before we decided to eat dinner and find someplace to stay for the night. Redding turned out to have a vibrant restaurant culture that consisted of four different cowboy-themed steak houses. We chose the “Lonestar Inn,” ate some greasy steak, and headed to bed at the Motel 6. The motel was not cowboy themed.
The next morning we headed out for Portland.
On our way to that liberal paradise we saw some interesting messages:
agro 76 station opining on Chevron with Techron
Scrump says, “I’m old.”
I say, “I’m sore.”
Does the license plate refer to how fast the Corvette is, or how fast he’s losing his hair? You decide!
behold, the miracle of modern optics…and rogaine!
bridges in Portland are sexist!
good night, for now.
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