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Old 10-02-2012, 07:25 AM   #1
Paulvt1 OP
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New Yamaha Triples.

http://hellforleathermagazine.com/20...n-a-road-bike/

I'm too young to remember Yamaha's last generation of triples - but this interests me. Concept looks to be a TDM type bike. Kind of makes sense.
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Old 10-02-2012, 08:49 AM   #2
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I've liked the character of the Triumph triples I've had a chance to ride. I'm glad to see that someone else is getting in on it.

The Hell For Leather headline says "Cross-plane Crank." How the heck do you make a cross plane triple? Really funny balance shafts?
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Old 10-02-2012, 09:42 AM   #3
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All of the 3 pointed star imagery in Yamaha's display seems to indicate the standard 120* crank, surely with the standard 240* firing intervals.

I think Yamaha is just trying to build themselves some branding with this crossplane stuff, like when they promote the 270* crank in the tenere as crossplane, where they didn't use the same marketing strategy for the TDM/TRX.

Of course, the point of the crossplane 4 cylinder in the R1 and M1 is to eliminate crank speed fluctuations due to inertial torque, and this is true for the 120* triple and the 270* parallel twin, so can't fault them overly much for trying to work it into their branding.

I'm hoping it's a new R6,
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Old 10-02-2012, 09:51 AM   #4
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If it is 800cc or less and on a standard or ST bike, I'm in.

If they just plop it into yet another ADV bike, I'm out.
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Old 10-02-2012, 06:07 PM   #5
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Quote:
Originally Posted by DannyZRC View Post
All of the 3 pointed star imagery in Yamaha's display seems to indicate the standard 120* crank, surely with the standard 240* firing intervals.

I'm hoping it's a new R6,
+1..... It's hard to imagine why a triple wouldn't have a 120 firing order. I'm also in for a new triple R6. Should be able to make it a little lighter as a triple, no?
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Old 10-02-2012, 06:30 PM   #6
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+1..... It's hard to imagine why a triple wouldn't have a 120 firing order. I'm also in for a new triple R6. Should be able to make it a little lighter as a triple, no?
Laverda did a flat plane triple, iirc

not saying it was good, just that they did it.
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Old 10-03-2012, 07:32 AM   #7
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+1..... It's hard to imagine why a triple wouldn't have a 120 firing order. I'm also in for a new triple R6. Should be able to make it a little lighter as a triple, no?
You would have a 120 crank in a two stroke triple. A four stroke would be 720/3 = 240 for even firing.
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Old 10-03-2012, 08:14 AM   #8
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You would have a 120 crank in a two stroke triple. A four stroke would be 720/3 = 240 for even firing.
same crank, different timing.
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Old 10-02-2012, 09:55 AM   #9
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Originally Posted by Paulvt1 View Post
I'm too young to remember Yamaha's last generation of triples - but this interests me.
I remember them. A friend had an 850 - it was the first street bike I ever drove. They were pretty dull compared to the Honda and Suzuki fours of the time. Yamaha eventually dropped them for the Seca 4 cylinder series. Hopefully, they'll be more competitive this time around.

I recently drove a Tiger 800 for 1200 miles. I could love a triple! So smooth, so torquey!
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Old 10-02-2012, 07:28 PM   #10
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Yamaha is just Jones-ing for a bit of Triumph Pie.

I do love a triple... so I'll be watching.
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Old 10-02-2012, 09:40 PM   #11
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triple crank designs

The initial 120 degree triple that Laverda developed shook like a paint mixer. So much so that it cracked its frame. The company then isolated the engine in a new frame with rubber mounting points and the rest is history. They sold such a bike as RGS and RGA models until the Breganze firm folded. Even with that revised frame, the bike can be really buzzy on the road if the engine isn't in a sharp state of tune.
Frankly, I prefer the old Laverda triples with the 180 degree cranks. They are less likely to put my hands to sleep due to vibration.
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Old 10-02-2012, 10:08 PM   #12
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Please be a 450 sportbike.
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Old 10-03-2012, 07:02 AM   #13
Paulvt1 OP
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It sounds like there will be a lot of new stuff based around the triple engine concept.
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Old 10-03-2012, 01:13 PM   #14
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Originally Posted by Paulvt1 View Post
http://hellforleathermagazine.com/20...n-a-road-bike/

I'm too young to remember Yamaha's last generation of triples - but this interests me. Concept looks to be a TDM type bike. Kind of makes sense.
Test rode a '78 XS750 once, man those are sweet bikes! I loved the triple's power delivery, it really does straddle the middle of a parallel twin's punchy character and an inline 4's smoothness.
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Old 10-03-2012, 03:01 PM   #15
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The XS750 is a lovely sounding bike, has an amazing growl.

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