Indian Motorcycle: The Thunder Stroke 111™ - Victory Forums - Victory Motorcycle Forum
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post #1 of 32 (permalink) Old 03-10-2013, 11:26 AM Thread Starter
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Default Indian Motorcycle: The Thunder Stroke 111™

Although the mention of the new Indian motor was mentioned in the lounge; I am posting this article in its entirety for future reference in the Indian section.

Breaking News. Indian Motorcycle Just Unveiled The Thunder Stroke 111 To Power The 2014 New Indian Line Up.


Published by Cyril Huze March 9th, 2013 in Builders, Editorial, Engines and Events.
A much larger crowd than usual on Daytona Main Street. All bikers gathering in & around the Dirty Harry’s bar for the very exciting unveiling of the new Indian Motorcycle engine to power the upcoming line up. And I must say, for me, my fellow media members and the public present at this event a terrific surprise. I must say that the Indian team succeeds way beyond my expectations in honoring the past to power the future. The all-new 111-Cubic Inch V-Twin Power Plant Unifies Iconic Past and Advanced Engineering and is another critical milestone in the company’s drive towards a full launch later this year.
It is quite remarkable that this Thunder Stroke 111 is born less than 2 years (April 2011) after the acquisition of Indian Motorcycle by Polaris Industries. It demonstrates the unprecedented commitment of time, resources and passion that Polaris has put into the design this the all-new power plant. The goal was to capture the iconic design and styling aspects of the 112-year old brand’s most historic models and fuse that heritage with state-of-the-art technology and progressive design elements. The new design reflects an unparalleled investment into researching the complete history of Indian Motorcycle power train development, including the review of volumes of historical documentation, miles of riding vintage motorcycles, and studying and dissecting a broad array of legendary Indian Motorcycle models.
The Thunder Stroke 111 engine features 111 cubic inch displacement and delivers the raw power and iconic styling that have long been hallmarks of the legendary Indian Motorcycle brand. Delivering more than 115 ft-lbs of torque, the 49-degree V-Twin engine imarks the first clean-sheet Indian Motorcycle engine design in seven decades. With parallel pushrod tubes, finned heads, down firing exhausts, left side air intake, and the proportions and layout familiar to Indian Motorcycle fans around the world. The 1948 Indian Chief was an inspiration for designers. Industrial Design clay model turns drawings into 3-D. and Computer Aided Drafting and stress analysis was extensively used before production testing starts.
The new Thunder Stroke 111 engine has been extensively tested, refined and proven by one of the industry’s most rigorous development and testing programs, accumulating over one million miles of testing, including state-of-the-art dyno testing, and hundreds of thousands of miles of on-road testing. The all-new Thunder Stroke 111 is built in Osceola, Wisconsin at the Polaris Industries Engine Assembly Plant, with future full unit motorcycle assembly taking place in Polaris’ state-of-the-art production facility in Spirit Lake, Iowa.
Engine displacement: 111 cubic inches
Torque: More than 115 ft./lb.
Architecture: 49-degree V-twin, air-cooled with integrated oil cooler, left-side air intake, down firing exhaust system, parallel pushrod tubes.
Crankcase: Unit design featuring a high capacity semi-dry-sump oil system,
oversized oil radiator
Timing system: 3 camshafts, pushrods, 2 valves per cylinder acting through maintenance free hydraulic valve lifters, forged crankshaft
Fuel system: Electronic sequential port fuel injection, electronic throttle control
Compression ratio: 9.5
Transmission: 6-speed overdrive, constant mesh, helical gearbox
Clutch: Low-effort, multi-plate wet clutch, aluminum basket, integral torsional damper.



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post #2 of 32 (permalink) Old 03-10-2013, 11:38 AM Thread Starter
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I like it. A lot!

Having said that; it's fairly obvious the engineers have taken some serious cues from the S&S X-Wedge motor as pictured below.



Now, that is not a bad thing, since the X-Wedge is a popular and proven motor.

Then it looks like they used their experience with the Victory lower end and redisigned it to work with this push rod design. There are some significant differences like the straight down design of the exhaust and the EFI with Throttle by Wire.

Getting rid of the separate trans and incorporating it into one unit is brilliant. HD should have done this years ago but they are just too resistant to change. Partially because the aftermarket is so huge and parts from a wide number of years fit the motor as it is designed now.

Overall I see pretty much what I was hoping for without knowing how it would look. A blend of nostalgic looks with today's technology. I see a solid winner if it proves to be as solid as the Victory motor.

Good job Polaris/Indian! Well done. It would have been a blast to part of that design team.
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post #3 of 32 (permalink) Old 03-10-2013, 12:11 PM Thread Starter
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Oh, and just in case anyone is interested in the X-Wedge motor for their HD...

http://www.sscycle.com/product/X-Wed...ne-p21047.html

X117C Complete Assembled Engine

MSRP:
$9,110.00

SKU:
106-3752

Qty:

Dealer Only Item


Print Page



The X-Wedge® engine is a S&S® designed 56° pushrod v-twin with three belt-driven cams in a unique configuration that provides nearly straight pushrod angles to all valves. In the lower end, a one-piece forged crankshaft with automotive style, plain bearing connecting rods and plain main bearings offers greater load capacity and increased engine durability and reduced noise. The cylinder heads were designed with automotive style low-mass rocker arms and a unique cross-flow wedge style combustion chamber. The fuel system consists of an S&S single bore throttle body and Variable Fuel Injection module, which boasts dual closed loop feedback for fuel control and knock sensing ignition.

This engine was designed as an emissions compliant performance engine right from the get-go. It was intended to fill a need in the market for manufacturers and custom bike builders who wanted something a little different, while maintaining emissions compliance.

The S&S X117C features and benefits include:
  • 117 cubic inch displacement, 9.75:1 compression ratio
  • 56° cylinder angle - reduced piston interference and less vibration
  • Unique belt driven, three cam design - better pushrod angles and reduced noise
  • Forged one-piece crankshaft with automotive style plain bearings
  • Gerotor style oil pump
  • Automotive style low mass rocker arms
  • S&S closed loop fuel injection system
  • Fits new build custom motorcycles
  • Full documentation
  • X117C also contains an evaporative emissions hardware kit
  • 50-state legal
  • Three year warranty
  • S&S VFI with knock sensing
  • Wrinkle black powdercoat finish

Last edited by BBob; 03-10-2013 at 12:37 PM.
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post #4 of 32 (permalink) Old 03-10-2013, 12:21 PM
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Considering that Indian clearly shows all those design features from an old Indian I do not feel they took from the X Wedge at all. S&S wasn't even in existence when the motor in the video was originally produced and the design features of the new motor clearly follow that heritage. The S&S uses right side intake, does not use down firing exhaust, is not unit constructed with the transmission and other than having two cylinders with parallel push rods has no similarity whatsoever. They aren't even the same cylinder angle.
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post #5 of 32 (permalink) Old 03-10-2013, 12:36 PM Thread Starter
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You might be right Wilcon. I still think some cues were taken from the X-Wedge. Not the design as a whole.

Do the piston rods look a little spindly to you like they do to me? I understand with today's metallurgy a rod can be made from hard and tough metals from various alloys to have the same strength as previous, and thicker, designs. They still look thin though. Especially for a motor pushing out 115 tq at stock and 9.5 to 1 compression ratio. Just an observation. Not knocking the design. I have high hopes for this new motor.

Last edited by BBob; 03-10-2013 at 12:41 PM.
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post #6 of 32 (permalink) Old 03-10-2013, 12:40 PM
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I'm buying lottery tickets!

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post #7 of 32 (permalink) Old 03-10-2013, 01:48 PM
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Did you see the price tag on 2013 what bikes they have now?
Why would you buy one of them and then the new ones come out with the new motor and make your value less.
What are the thinking.

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post #8 of 32 (permalink) Old 03-10-2013, 02:01 PM Thread Starter
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Quote:
Originally Posted by visionjohnny View Post
Did you see the price tag on 2013 what bikes they have now?
Why would you buy one of them and then the new ones come out with the new motor and make your value less.
What are the thinking.
I'm not following your thinking VJ. Are you talking about the Victory or Indian models?

The previous 3 styles of the Indian will probably drop in value but I don't see how it would affect the Victory brand. Maybe I'm missing something...
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post #9 of 32 (permalink) Old 03-10-2013, 02:57 PM
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BBob, I have been saying since last night that it reminds me of the X-Wedge. In the area of the cam chest only, with the same design concept. I know that the Vic engineers improved it with a chain over a belt, but the design is obviously similar. I am so excited over this new motor, that I feel like a kid at Christmas, and I don't have a thing invested in it. My pap told me stories all my life about the adventures he had on his 1938 Indian Chief. So seeing this makes me want to be a part of it !!!

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post #10 of 32 (permalink) Old 03-10-2013, 02:59 PM
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Quote:
Originally Posted by BBob View Post
You might be right Wilcon. I still think some cues were taken from the X-Wedge. Not the design as a whole.

Do the piston rods look a little spindly to you like they do to me? I understand with today's metallurgy a rod can be made from hard and tough metals from various alloys to have the same strength as previous, and thicker, designs. They still look thin though. Especially for a motor pushing out 115 tq at stock and 9.5 to 1 compression ratio. Just an observation. Not knocking the design. I have high hopes for this new motor.
I would bet the rods are more than strong enough to handle the task. Even with stage 1 and cams added.

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