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Old 04-22-2012, 11:39 PM   #106
doxiedog
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The Bonneville, T100 & Thruxton all have 360 engines!
Only the scrambler has a 270,none are 180.
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Old 04-23-2012, 12:19 AM   #107
sebastianp
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I testrode a Bonneville on the weekend and found it to be a remarkably pleasant machine. More than enough power for every day living, but I found it a bit too gentle for me. Comfortable and worked really well.

I recorded my testride here:
http://www.youtube.com/watch?v=67-eQkTV8m0
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Old 04-23-2012, 03:37 AM   #108
Tripped1
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Quote:
Originally Posted by Beaverboy View Post


The Bonneville, T100 & Thruxton all have the same 865cc, 180* crank engine. The Speedmaster, America and Scrambler all have 270* cranks.

As for your "hitting" the crank at as close to 90* comment.. well, you seem confused about what '270* crank' means... or I'm completely missing your intended meaning.

I know what it means I was simply wrong, its how far the crank moves between ignition strokes.
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Old 04-23-2012, 06:23 AM   #109
LWRider
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Quote:
Originally Posted by doxiedog View Post
The Bonneville, T100 & Thruxton all have 360 engines!
Only the scrambler has a 270,none are 180.
Did they change this over the years? I am looking in my "Owner's Handbook" at the specification pages for my 2011 Bonnie T100 and it says the Bonneville, Bonneville SE, and the Thuxton all have 360 degree firing angles; while the Bonneville T100 and Bonneville Scrambler have 270 degree firing angles.

Cheers,

Mike
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Old 04-23-2012, 08:07 AM   #110
No False Enthusiasm
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From Triumph Website: http://www.triumphmotorcycles.com/mo...ille-t100/2995

T-100:

Quote:
SPECIFICATIONS
Engine and Transmission
Type Air-cooled, DOHC, parallel-twin, 360 firing interval
Capacity 865cc
Bore/Stroke 90 x 68mm
Fuel System Multipoint sequential electronic fuel injection with SAI
Exhaust Stainless steel headers, twin chromed exhaust
Final Drive X ring chain
Clutch Wet, multi-plate
Gearbox 5-speed
Oil Capacity 4.5 liters (1.2 US gals)
NFE
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Old 04-23-2012, 09:22 AM   #111
LWRider
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That's a pretty big flub up in the Owner's Handbook.
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Old 04-23-2012, 03:56 PM   #112
Bikebits
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Quote:
Originally Posted by LWRider View Post
I am looking in my "Owner's Handbook" at the specification pages for my 2011 Bonnie T100 and it says the Bonneville, Bonneville SE, and the Thuxton all have 360 degree firing angles; while the Bonneville T100 and Bonneville Scrambler have 270 degree firing angles.
That is a massive, inexcusable mistake.

The T100, Bonnevilles and Thruxton have the 360 degree engine; the Scrambler, America and Speedmaster have the 270 degree crank.
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Old 04-23-2012, 05:25 PM   #113
sargev55
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Quote:
Originally Posted by Bikebits View Post
That is a massive, inexcusable mistake.

The T100, Bonnevilles and Thruxton have the 360 degree engine; the Scrambler, America and Speedmaster have the 270 degree crank.

go easy, its a british manual

at least the electrics work
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Old 04-23-2012, 05:54 PM   #114
teachnsurf
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I got nothing to say. I just saw an opportunity to post a pic of my ride.


'09 Bonnie Black EFI
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Old 04-23-2012, 08:40 PM   #115
DWR302
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Teach, I like the well worn Bonnie. I have started reading your 09 trip report. Very interesting. Do I recall you commenting on a trip I took last year and posted in the Triumph forum? Anyway, cheers! Heading out on a little trip to the Ozark Rat Raid myself in the morning.
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Old 04-24-2012, 07:46 AM   #116
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It works for me too. Last year did a 4500 mile trip in 10 days. Only problem I had was almost getting stuck in deep sand in New Mexico.

And it had no problem keeping up with traffic on the interstate. Although with the light weight it gets a bit dicey passing those big RV's with the flat noses at 100mph.

Tecpatl4 screwed with this post 04-24-2012 at 07:58 AM
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Old 04-24-2012, 09:56 AM   #117
KungPaoDog
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So now that we figured out which model has which crank, what is the difference between the two engines? Is there a difference in traction on the dirt for the Scrambler? Is it just about sound? Does one vibrate more than the other? Are the torque curves super different? Why did the bother?
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Old 04-24-2012, 10:03 AM   #118
fyr
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Well
Im on to my second.. 07 T100
Was on the fence on what to or not to buy. My mind always came back to the Bonnie.
It'll be a do it all bike for now.. pics when I have em
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Old 04-24-2012, 10:10 AM   #119
acap650
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Quote:
Originally Posted by KungPaoDog View Post
So now that we figured out which model has which crank, what is the difference between the two engines? Is there a difference in traction on the dirt for the Scrambler? Is it just about sound? Does one vibrate more than the other? Are the torque curves super different? Why did the bother?
Since singles are the best for traction, a twin with two closely spaced power pulses hooks up better than one with evenly spaced pulses. Examples are flat track and gp bikes with "big bang" timing.

In the Scrambler the 270 deg crank feels and sounds more like a 90 deg v-twin. I doubt there is much real world advantage, I think it is just marketing.
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Old 04-24-2012, 12:16 PM   #120
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According to the Speedmakers episode on Triumph and their then-new Thunderbird (1600 cc, but also 270 dregree crank), the 270 engine was to give more chuckle sounds to the engine. They're trying to approximate the acousitcs of a v-twin (with an ear on Milwaukee).

http://www.hulu.com/watch/238956/spe...ph-motorcycles
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