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I like my Niner I really do, but having ridden a 360 twin engine in the trumpet I can see the attraction of the even firing order of the Mk1.
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Must confess I too liked my 3VD for that reason. But crap carbs and it felt very heavy in comparison, I'll stick with the 9er.
2002 TDM900 Yellow
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Glad you're liking the bike Lee. :good:
It's actually a 180 motor in the mk1, but who's counting.  Â
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Anyhoo, fit mk2a carbs and they can run really smooth, better than the 9'er imho. The 9'er does feel lighter though, even though it's a heavier bike than the mk1, might be related to the angle of the motor, oil tank position and/or the tyres perhaps ?
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I thought the 9er is 10kg lighter? Or, rather, 9?
And isn't the Mk1 360deg, as it has only 1 coil?
Bjørge
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I thought mk 1 is 360 in that both pistons rise and fall together ?
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It's a 360 isn't it? Both go up and down together but alternate one fires on each revolution, hence the single coil and wasted spark.
Â
I always felt the Mk1 was better on twisty B roads than the 900, with better low RPM response for powering out of slow corners. The 900s better on faster roads though. They benefit from heavier fork oil in my opinion (especially as TDM owners like cake) and anything on it's original shock is probably a bit bouncy by now.
1992 Mk1, 76k miles, Hagon springs, MTC exhaust, 4½ gears Gone now 
2009 900 abs, 42k miles, Yamaha heated grips, double bubble screen, R&G crash bungs, scottoiler, Autocom, 1500 lumen LED spotlights.
![[Image: post-1-1152402501.jpg]](http://www.carpe-tdm.net/ipb/uploads/post-1-1152402501.jpg) ![[Image: post-1-1150550726.gif]](http://www.carpe-tdm.net/ipb/uploads/post-1-1150550726.gif) ![[Image: post-1-1150559830.gif]](http://www.carpe-tdm.net/ipb/uploads/post-1-1150559830.gif)
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Oooops,my bad. Dunno where that thought came from. Wet weight and the mk1 is lighter, dry weight the non-abs 9'er is lighter.
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FWIW, mention of the angle of the motor reminds me that they have set the engine more vertical in the latest MT-09,.Â
<del>1940s Ariel 350 (ex-military) Khaki > Black & White</del> <del>'56' Kymco Venox 250 Metallic Grey</del><strong> <del>'56' TDM 900/A (ABS) Silver</del>[b] <del>'56' Yamaha MT-03 White</del> <p>[b] '14' Yamaha MT-07 Matt Grey[b] '17' Honda Rebel 500</strong>Â
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Took me a while. MK2 for a long time... then a week of testing a 9er....hmmm.. back on the MK2...then MK2 and MK1 for a while...and finally I worked it out. MK1 ever since. Êã£á´¥Êã£
Doin valve clearances? Use dappers valve shim exchange program and the job will be carroty - Free (other than you postin me yer shims) for sporting members.
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Quote:Oooops,my bad. Dunno where that thought came from. Wet weight and the mk1 is lighter, dry weight the non-abs 9'er is lighter.
Â
Found on the interweb on TDM850:
<b>Dry Weight</b>
201kg / 449.7 lbs
<b>Wet Weight</b>
220 kg / 485.0 lbs
Â
....this is obviously wrong, as Fuel+oil+coolant is far more than 19kg. I think 230kg wet is more correct.
Bjørge
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19 kg is abought right for 18 liters of fuel, 4.2 of oil and 1.7 of coolant, which I think re the book figures.
1992 Mk1, 76k miles, Hagon springs, MTC exhaust, 4½ gears Gone now
2009 900 abs, 42k miles, Yamaha heated grips, double bubble screen, R&G crash bungs, scottoiler, Autocom, 1500 lumen LED spotlights.
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Quote:19 kg is abought right for 18 liters of fuel, 4.2 of oil and 1.7 of coolant, which I think re the book figures.
Â
You're right! Didn't think of how much lighter petrol and oil is compared to water... But why would it be (much!) more on a 9er?
Bjørge
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20 liter fuel, 3.9 litres oil and 2 liters coolant from a quick google search, which I make about 1.5kg heavier, so not much in it.Â
1992 Mk1, 76k miles, Hagon springs, MTC exhaust, 4½ gears Gone now
2009 900 abs, 42k miles, Yamaha heated grips, double bubble screen, R&G crash bungs, scottoiler, Autocom, 1500 lumen LED spotlights.
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Yeah, so wet weight should be some 211kgs
Bjørge
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It'd weigh more if you put litres in it as there's more of 'em than gallons. 
Â
tbh I've allus felt the mk1 to be heavier when shuffling it about and at low speed, compared to the 9'er.
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It definately feels heavier, and also has a tendency of falling into tight curves. Need to push it to upright after e.g. a roundabout. A bit like when head bearings are too tight...
Bjørge
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