Indian FTR750 Flat Track Race Bike Details

Discussion in 'Indian FTR750 Flat Track Racer' started by NickJ, Jul 27, 2016.

  1. NickJ

    NickJ Administrator
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    indian-flat-tracker-prototype_chassis-86.jpg

    I have been super excited about this bike for a while. We saw images of the new engine a few months ago and could only assume that a chassis was on the way. Well, CW got the exclusive look at the bike in it's prototype form at the Minn fortress of solitude.

    The rules and regs for Dirt Tracking are pretty lax, if not non-existent, so Indian was able to start with a clean slate in dev'ing their dirt tracker. They took notes on what was working and what racers would change if given the opportunity. Indian looked to AMA Racer, Jared Mees, for input on his ideal setup. He is a multi-time champion on the dirt oval and quite capable to give the Indian engineering team the direction they need to make this bike come to life.

    indian-flat-tracker-prototype_chassis-35.jpg

    The plan has been to create five prototypes and several spares. I can only assume that each one of these prototypes is slightly different so that they can hone in on the perfect setup.

    The frame sits at a neutral 55-inch wheelbase and offers adjustment of 7/8 of an inch front and rear. While this is not anything different than the other bikes in the field, where the difference comes is in the ultra-light powerplant. The FTR750 engine weighs just 106 pounds and is compact enough to be placed in multiple positions in the frame to optimize performance on track.

    indian-flat-tracker-prototype_chassis-14.jpg

    This will be the first steel tube chassis to come out of the Medina think tank. I assume that the relatively small diameter tubing is chromoly to provide strength and easy track-side modification and repair with common welding equipment. The only thing that makes me doubt the chromoly is the mention of the need for flex out on track. The more narrow gauge steel could accommodate the desired flex characteristics though.

    indian-flat-tracker-prototype_chassis-9.jpg

    Tech Specs of the Chassis are as follows:

    Steering-head Angle: 25 degrees w/ headstock cups allowing 2 degrees of adjustment
    Trail: 3.9 inches (99mm) w/ 53mm fork tube offset from the steering axis & more adjustment available w/ fork crowns
    Crankshaft: 25.5 inches behind front axle at full droop (2 inches ahead of wheelbase mid-point)
    Tank Capacity: 2.2 Carbon Tank (2 pieces using the Scout tank as a reference point for design)
    Injector: 1 per cylinder (sourced from the production Scout)
    Fuel Pump: Operates at 60 psi (sourced from the production Scout)
    Air Intake: Vertical Downdraft with High Surface Area Filter
    Chassis Torsional Stiffness: 572 pound-feet per degree
    Lateral Stiffness: 292 pounds per millimeter
    Radiator Core: 6 x 8.5 inches

    indian-flat-tracker-prototype_chassis-37.jpg

    The frame supports multiple head tube support loops. Two run the span from the seat to the head tube above the tank and two below. This will provide protection for the carbon tank in the event of an accident out on track. The frame did resemble some of the popular aftermarket frames available on the market in keeping with the Polaris approach of not reinventing the wheel whenever possible. The frame features only the necessary supports and tubing to keep the wight of the chassis down. The seat frame offers both a very minimal appearance, but also many different mounting points allowing the rider to customize the riding position and the weight distribution.

    indian-flat-tracker-prototype_chassis-26.jpg

    The exhaust is mounted on the left side of the bike and composed of 20-gauge 304 stainless steel starting with a diameter of 1.75 inches and expanding to 2.25 inches. Minimal baffling leads the V-twin two stroke engine to have a "very loud" exhaust note.

    indian-flat-tracker-prototype_chassis-30.jpg

    The FTR750 retains the clean look of the Scout engine by forgoing the superfluous cooling fins. Being a water cooled engine, the cooling of engine components is handled by the radiator hanging forward of the frame downtubes and aft of the fork stanchions.

    indian-flat-tracker-prototype_chassis-89.jpg

    The FTR750 is rated at 109 horsepower, rendering a little over 1 horsepower for every pound the engine weighs. That is huge!

    indian-flat-tracker-prototype_chassis-3.jpg

    I am excited to see this thing in action and I can only assume that they are going to have something ready for the Flat Track races scheduled for this year's Sturgis Rally. Hopefully we have some members up there to report on this for us!
     

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  2. Blueshwk

    Blueshwk Moderator
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    Looking forward to hearing a sound clip of that motor running. That bike looks badass!
     
  3. NickJ

    NickJ Administrator
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    I hope they leave the exhaust raw like that as well!
     
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  4. Sturgis 75th

    Sturgis 75th Moderator
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    I'd like one of these for bar hopping around town.
     
  5. Sturgis 75th

    Sturgis 75th Moderator
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    Or should I say racing around town.
     
  6. NickJ

    NickJ Administrator
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    The front tire would likely never wear out due to the amount of time it would actually be on the pavement...
     
  7. Sturgis 75th

    Sturgis 75th Moderator
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    I heard if you do that you can just swap the front to the back when the back wears out.
     
  8. thumper

    thumper Gold Member
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    Really looking forward to seeing Indian eat Harleys lunch on the track. Time to bring back the "Wrecking Crew"!
     
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  9. scooterbe

    scooterbe New Member
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  10. confederate

    confederate Member
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    Wish we could see flat track racing on TV..................................:(
     
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  11. Bobby Jesus

    Bobby Jesus Chainsaw God
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    Oh yeah! This is getting fun
     
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  12. Alpal

    Alpal Gold Member
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    Totally agree!
     
  13. Hatt

    Hatt Well-Known Member
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    Funny,, and true! Lol
     
  14. Baldhead_J

    Baldhead_J Gold Member
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    Nov 15, 2018
    American Flat Track: Indian Says New Rule Change Unfairly Singles Out Its FTR750
    © 2018, Roadracing World Publishing, Inc. From a press release issued by Indian Motorcycle:
    [​IMG]
    Indian feels that a new rule change in American Flat Track unfairly singles out its FTR750, which has dominated AFT Twins racing for the last two seasons. Photo by Scott Hunter, courtesy of AFT.
    Indian Motorcycle Racing Statement Regarding American Flat Track Rule Changes for 2019 Season


    MINNEAPOLIS, Nov. 15, 2018 – American Flat Track recently communicated a series of rule changes for 2019, designed to increase the competitive balance in the sport. Two of the three rule changes single out Indian Motorcycle and the FTR750, and one of the three unfairly handicaps Indian Motorcycle’s ability to compete.

    Indian Motorcycle developed a superior purpose-built race bike that conforms to AFT’s rules and regulations. While our efforts over the past two years produced unparalleled success on the track, the result has also been a competitive imbalance that ultimately does not benefit the sport. For this reason, we are fully supportive of efforts by AFT to restore competitive balance. However, we believe the changes for 2019 do not create the competitive balance we all desire and instead put Indian Motorcycle Racing at a competitive disadvantage.

    First is the change from Sonoco Supreme fuel to Sonoco GTX-260 fuel, a lower octane, lead-free fuel that will force reductions in compression ratios and, ultimately, reduced power output. This is something that affects all teams equally, and Indian Motorcycle is aligned with this change.

    Second is the allowance of street-legal production engines up to 900cc. The change to allow smaller displacement engines to increase bore and stroke past 750cc to 900cc will produce broader torque curves and higher peak power where desired, which is a significant advantage. “Production” engines are also allowed to change out all internal components including crankshafts, cams, pistons, connecting rods, and valves. Although this change puts Indian Motorcycle at a disadvantage, we support this as part of AFT’s effort to create competitive balance.

    We take serious issue with the third rule change – allowing production engines to increase from 38mm throttle bodies to 40mm. This rule excludes Indian Motorcycle Racing, because the Scout FTR750 is not a street legal production motorcycle. Not only does the rule singularly handicap Indian Motorcycle, it represents a significant impairment of our ability to compete on an equal level with every other team in the paddock, specifically on mile tracks.

    We have done extensive testing in this area, and our results have shown that 40mm throttle bodies produce 20% to 22% more air flow than the 38mm throttle body. In previous years, larger throttle bodies have been allowed, but limited specifically to larger production motors. This will be the first time that smaller, lighter production motors, similar in dimension and weight to the FTR750, will be able to increase throttle body sizes, creating a significant advantage over larger, heavier motors, let alone over the FTR750, for which this allowance does not apply. This is extremely significant on mile tracks where the increased air intake is maximized over the longer straights. Considering that the mile tracks are the predominant racing format in the series, this puts us at a drastic disadvantage and is detrimental to our ability to fairly compete at mile tracks.

    It is critical to us that American Flat Track fans understand how these changes exclusively impair Indian Motorcycle Racing. Despite these changes, we will attack 2019 with the same competitive focus and determination that resulted in back-to-back championships over the past two years.
     
  15. sidecarsam

    sidecarsam Gold Member
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    This sucks; if you ask me. Changing rules to disadvantage Any brand is a Rotten Deal. :mad:
     
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  16. JayFL459

    JayFL459 Silver Member
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    Think This Totally Stinks but is nothing new to Racing I was not old enough to remember what changes were made in Early NASCAR when Fireball Roberts was kicking azz and taking almost every Race .. Same thing happened when Bill Elliot Ruled the Track changes made because all were fussing he had the most powerful car .. Victory had to have S&S Build them a Pushrod Engine for Drag Racing because Harley's didn't have a prayer against Victory's Overhead Cam design engine ..
     
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  17. Ken Smith

    Ken Smith Well-Known Member
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    If they want to see more success from the production-based models, they should just stop allowing the non production-based models in the sport.

    I would have no problem with that throttle body rule if it were for the 2020 season. But it's a bit late to introduce something that severe for 2019. It will be very difficult for Indian to get the title in 2019.

    I think everyone but Indian was at a serious disadvantage in 2017 and 2018. Indian took full advantage of rules that allow a lot of opportunity for anyone with lots of money to get ahead. HD went in the other direction.

    Maybe a 2019 Indian FTR 750 for the street will solve the issue. Build it such that the existing race bike fits the new rules as an upgrade of the street version.
     
  18. Alpal

    Alpal Gold Member
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    You stole my thunder Buddy, as I was going to say the same thing. Lots of people have said Indian should produce a smaller entry bike for the new rider,......Well Indian,.....here's your chance to do just that,......and continue winning at the track,.....
     
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