Monday, 31 March 2014
Yamaha TW125 Trailway
A couple of years ago I got a call from a friend of a friend looking for a small motorcycle. The bike had to be a 125cc for insurance reasons and the budget was a €1000. After a few questions I narrowed the brief down to something four-stroke and Japanese-built. And for a variety of reasons, a dirt bike would be advantageous.
A quick look at DoneDeal (http://www.donedeal.ie/) turned up a Yamaha TW125 Trailway. The bike was about 10 years old and had some cosmetic damage from an off-road crash but was in otherwise good condition. Crucially, it only had about 700km on the clock - it was practically brand new!
I went out to look at the thing on my Buell. Apart from a small dent in the tank and a scrape on the front mudguard it was in showroom condition. I didn't even haggle - I just handed over the asking price. The guy followed me home on his Guzzi. I parked up the Buell and got a lift back with him to pick up the little Yamaha.
I loved it. My first bike was a Yamaha DT80LC and the TW made me very nostalgic. It had exactly the same clocks, fairing and bars. And the switchgear was the same except for the electric start button. Even the tank looked the same once you were on board the thing. And it had the same complete lack of pulling power. However, it had lovely, stable handling and unlike my old DT, the brakes were pretty good.
I was enjoying the nostalgia so much that I rode the long way round to the workshop, taking in some off-road trails on the way. Apart from the lack of power, it was a lovely little machine and riding it off-road was very unusual. The big tyres floated over loose sand and gravel and the tiny engine pulled with very little drama. Whereas normally, loose sand needs to be approached with a little aggression, the TW just trundled over it like a quad-bike. It was a very competent and confidence-inspiring trail bike.
A quick look at DoneDeal (http://www.donedeal.ie/) turned up a Yamaha TW125 Trailway. The bike was about 10 years old and had some cosmetic damage from an off-road crash but was in otherwise good condition. Crucially, it only had about 700km on the clock - it was practically brand new!
I went out to look at the thing on my Buell. Apart from a small dent in the tank and a scrape on the front mudguard it was in showroom condition. I didn't even haggle - I just handed over the asking price. The guy followed me home on his Guzzi. I parked up the Buell and got a lift back with him to pick up the little Yamaha.
I loved it. My first bike was a Yamaha DT80LC and the TW made me very nostalgic. It had exactly the same clocks, fairing and bars. And the switchgear was the same except for the electric start button. Even the tank looked the same once you were on board the thing. And it had the same complete lack of pulling power. However, it had lovely, stable handling and unlike my old DT, the brakes were pretty good.
I was enjoying the nostalgia so much that I rode the long way round to the workshop, taking in some off-road trails on the way. Apart from the lack of power, it was a lovely little machine and riding it off-road was very unusual. The big tyres floated over loose sand and gravel and the tiny engine pulled with very little drama. Whereas normally, loose sand needs to be approached with a little aggression, the TW just trundled over it like a quad-bike. It was a very competent and confidence-inspiring trail bike.
I rode out to the workshop and gave the bike a quick once-over, adjusting the mirrors and controls, pumping the tyres and topping up the oil before heading back home, pleased with my evening's entertainment.
The following Saturday morning, I got up early, strapped a small rucksack to the TW's rack and set off on a 200 mile (320km) journey to County Cork to deliver the bike to its new owner. With only 11 horse-power at my disposal, opening the throttle all the way saw the speedometer needle slowly climb to a little over 50mph (80kph). That's okay. 50mph isn't terribly fast, but I felt I was making progress, the weather was bright, mild and dry and I was happy to be out on any kind of motorcycle adventure.
The first hour or so on the motorway passed happily enough. Then I began to get bored and I reasoned that riding on the A-road that ran alongside the motorway might be a bit more entertaining. I stopped for fuel early, partly to break the monotony and partly because I had no idea of the fuel range of the bike because I knew neither the fuel economy (which I guessed was probably upward of 70mpg) or the size of the tank (which I guessed was pretty small).
Based on prior experience, I was anxious about going onto reserve on the motorway and having to drive a further maybe 10 miles to the next exit before desperately searching for petrol in rural Ireland with a severely diminishing amount of fuel. Range anxiety is something that troubles me a lot and is one of the reasons I love my CBR1000F so much - on a long trip it'll do between 180 and 200 miles before reserve.
My morale was doing okay up until this point but it was about to take a turn for the worse. You see, the terrain on the first part of the journey was reasonably flat but as you head south it gets hilly and the further south you go the hillier it gets. And the TW125 doesn't cope well with hills. On uphill sections, the speedo needle would slowly drop from 50 to 40mph and 5th gear would drop to 4th...
And then it got windy. And the TW125 doesn't cope well with headwinds. On windy uphill sections the speedo needle dropped to 30mph and 4th gear dropped to 3rd gear and I was forced to crawl along on the hard shoulder like a piece of agricultural equipment. And that wasn't much fun. It was frustrating and I began to wish the journey was over, and once that happens, well it's all downhill from there...
Except it wasn't downhill. In terms of distance I was only halfway there, and most of the rest of the journey was uphill and the further south I went the stronger the headwind became.
It was a miserable journey. And I thought about that mathematical frog that could jump only half the distance to his destination. And I really knew how that frog felt as the further I went, the slower I got and I became despondent and lonely and I felt I would never arrive.
Its funny how your sense of reality can become so distorted by low morale. I hated the TW and I hated every minute of the second half of the trip. In retrospect, I should have taken a detour to visit a local landmark or maybe stopped for something to eat to try and recoup the fun of the trip. Instead, I just fixated on getting to the end, which is no fun at all...
So I eventually reached my destination. It took me over five hours to do a journey that normally takes me less than two and a half. After some food I felt a bit better about the bike. On balance I really quite liked it. It was very easy to ride, particularly off-road and it was visually appealing with its clean lines and enormous tyres.
On the down-side, the build quality wasn't so good - pretty similar to my DT, with thin paint and rust-prone fasteners. And obviously the lack of power was the real clincher. But if only it had the power to maintain 60mph on the highway, I would have kept the thing for myself.
Which finally brings me to the point of this article - There's a 200cc version of the TW available and you can make it look like this...
#Trailway #YamahaTrailway #TW125 #Mercenary #MercenaryGarage
The following Saturday morning, I got up early, strapped a small rucksack to the TW's rack and set off on a 200 mile (320km) journey to County Cork to deliver the bike to its new owner. With only 11 horse-power at my disposal, opening the throttle all the way saw the speedometer needle slowly climb to a little over 50mph (80kph). That's okay. 50mph isn't terribly fast, but I felt I was making progress, the weather was bright, mild and dry and I was happy to be out on any kind of motorcycle adventure.
The first hour or so on the motorway passed happily enough. Then I began to get bored and I reasoned that riding on the A-road that ran alongside the motorway might be a bit more entertaining. I stopped for fuel early, partly to break the monotony and partly because I had no idea of the fuel range of the bike because I knew neither the fuel economy (which I guessed was probably upward of 70mpg) or the size of the tank (which I guessed was pretty small).
Based on prior experience, I was anxious about going onto reserve on the motorway and having to drive a further maybe 10 miles to the next exit before desperately searching for petrol in rural Ireland with a severely diminishing amount of fuel. Range anxiety is something that troubles me a lot and is one of the reasons I love my CBR1000F so much - on a long trip it'll do between 180 and 200 miles before reserve.
My morale was doing okay up until this point but it was about to take a turn for the worse. You see, the terrain on the first part of the journey was reasonably flat but as you head south it gets hilly and the further south you go the hillier it gets. And the TW125 doesn't cope well with hills. On uphill sections, the speedo needle would slowly drop from 50 to 40mph and 5th gear would drop to 4th...
And then it got windy. And the TW125 doesn't cope well with headwinds. On windy uphill sections the speedo needle dropped to 30mph and 4th gear dropped to 3rd gear and I was forced to crawl along on the hard shoulder like a piece of agricultural equipment. And that wasn't much fun. It was frustrating and I began to wish the journey was over, and once that happens, well it's all downhill from there...
Except it wasn't downhill. In terms of distance I was only halfway there, and most of the rest of the journey was uphill and the further south I went the stronger the headwind became.
It was a miserable journey. And I thought about that mathematical frog that could jump only half the distance to his destination. And I really knew how that frog felt as the further I went, the slower I got and I became despondent and lonely and I felt I would never arrive.
Its funny how your sense of reality can become so distorted by low morale. I hated the TW and I hated every minute of the second half of the trip. In retrospect, I should have taken a detour to visit a local landmark or maybe stopped for something to eat to try and recoup the fun of the trip. Instead, I just fixated on getting to the end, which is no fun at all...
So I eventually reached my destination. It took me over five hours to do a journey that normally takes me less than two and a half. After some food I felt a bit better about the bike. On balance I really quite liked it. It was very easy to ride, particularly off-road and it was visually appealing with its clean lines and enormous tyres.
On the down-side, the build quality wasn't so good - pretty similar to my DT, with thin paint and rust-prone fasteners. And obviously the lack of power was the real clincher. But if only it had the power to maintain 60mph on the highway, I would have kept the thing for myself.
Which finally brings me to the point of this article - There's a 200cc version of the TW available and you can make it look like this...
#Trailway #YamahaTrailway #TW125 #Mercenary #MercenaryGarage
Sunday, 30 March 2014
Saturday, 29 March 2014
Friday, 28 March 2014
CBR1000F - Factory Jet Kit
This just arrived from the 'States in the post.
Its a NOS Factory jet kit from the mid '90s. The Ebay advertisement said it was for a CBR1000F but the documentation in the kit says its for a CBR1000R.
I was a bit confused by this, but I decided to take a chance and buy it any way. Y'see, to the best of my knowledge, in the mid '90s there wasn't a CBR1000R model. There was a CBR900RR Fireblade that went on to become a CBR1000RR some time around the millennium. And there was the CBR1000F.
So, I'm hoping its for a CBR1000F but I'm not sure. At some point I'm going to have to replace the slowly rotting silencers (I've welded them twice already) and the most likely route will be by replacing them with one or two Yoshimura cans. If that happens, I'll probably need to rejet the carbs and I guess this is a good place to start.
In the meantime, I just want to smooth out the carburation and smooth out the transition from low revs to mid revs.
Watch this space.
Thursday, 27 March 2014
CBR1000F - GPS Bracket
This worked like a charm until two Fucking Little Scumbags tried to steal the bike. They used two crowbars to force the steering lock* and in the process destroyed the GPS bracket and the fuel-cap bezel.
Although the bracket was badly deformed, the GPS cradle (which is relatively expensive) was unharmed. Which was nice.
I didn't bother making a new bracket. Partly because I was too annoyed and partly because I knew at some point I'd probably be replacing the clip-on bars with handlebars and risers and I had an idea that the bars and the bracket might come into conflict. This turned out to be the case so after fitting the handlebars (You can read about that here - www.mercenary.ie/cbr1000f-handlebar-conversion) I made up the bracket you see here.
I fitted it a while ago and it works great but I only got around to painting it recently. Ergonomically its pretty good. It's just below the clocks so it's easy to read and it's within easy reach - its pretty much in the same position it was before but maybe a little higher.
There is however, one small drawback. Although the bracket doesn't interfere with the operation of the fuel-cap, it does prevent the fuel tank from lifting up. So in order to get to the carbs and coils and all that stuff under the tank, the bracket has to be removed from the handlebars.
This is obviously inconvenient, but its not something I do very often. And when I do lift the tank, I usually do so in the comfort of the workshop so for now I'm happy out. If the tank thing proves to be a problem in the future I'll come up with some other solution...
*This is Fucking Little Scumbag SOP so if you can park your bike with the front wheel wedged in against a corner or a pillar, it really fucks with their heads. Its the first thing they do and if it doesn't work for them, they just might fuck off before doing any more damage.
#CBR1000F #Mercenary #MercenaryGarage
Wednesday, 26 March 2014
Subscribe to:
Posts (Atom)