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R/C Tech Forums Thread Wiki: Kyosho ST-RR
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Current running upgrades/Mods people are doing to this truck late 2016/early 2017.

-Chassis Options
m2c2850 KYOSHO STRR EVO WEIGHT FOWARD TRUGGY

-Engine Mount Option
IFW102 - Blue narrower Mount. Allows you to put Lock Nuts on top of screws that hold the Mount plates in.
Agama motor mount AGM6206

-For MP9 Knuckle conversion
Kyosho IF419 MP9 Knuckles
Kyosho IFW436 16degree Hub Carrier
Kyosho IF420 Knuckle Arm Collar (slightly thinner than STRR one)
Kyosho IF467 Long King Pin

-Strengthening upgrades
King Headz KP-360-BLK Front Torque Arm
King Headz KP-372RR-BLK Rear Torque Arm (extended chassis)
King Headz KP-300LB-BLK Lower Front Holder B
King Headz KP-300UL-BLK Front Upper Holder L
King Headz KP-329 Rear Brace Mount
IS157 Hardened Diff Case from Psycho Kruiser
IGW002GM Alum Rear Hubs
HB Outdrives #67197

-Replacing C-Clip Hinge Pins on Inner Susp Holder
HPI 109848 Hing Pins
Racers Edge/KFactory RCEK8034 Pins (Very hard to find)
or
Replace complete A/B/C/D Blocks with:
*M2C m2c2510 KYOSHO ST-RR/ EVO REAR TOE BLOCK
*M2C m2c2520 KYOSHO STRR EVO TRUGGY FRONT LOWER ANTIDIVER KIT


-Servo Saver Mod
IFW450 MP9 SS Alum Upper Arm
IF417 MP9 SS Lower Assembly

(See http://www.rctech.net/forum/showpost...postcount=4112 for full pics and description).


-Performance Updates
IFW327BL Blue Narrow Hexes (typically run on front).

-Bodies Options
RC8T Bulldog Body (discontinued late 2016).

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Old 08-03-2007, 07:53 AM   #1
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Default Kyosho ST-RR

The Kyosho ST-R established higher standards of quality and technology when it was introduced in early 2006, and now the new ST-RR competition truggy raises the bar even higher! The ST-RR is the culmination of a year and half of racing and rigorous R&D and the result is the most refined racing truck on the market. As the 2007 Silver State Champion, the ST-RR is poised to take it to the competition on a whole new level.



Features



Long Chassis - The ST-RR chassis is 25mm longer than the ST-R. The chassis is the best performer chosen from four different prototype chassis tested. Instead of just guessing and producing a random long chassis, the designers and team drivers exhaustively tested different configurations of varying lengths and weight distribution to establish which provides the best performance. The front-weighted chassis that was chosen features extra length for rock-solid stability in the bumps, while concentrating weight as far forward as possible to give the ST-RR exceptional steering response. It's the best of both worlds; ultra crisp steering response and unrivaled stability.



Big Bore Shocks - Bump handling is greatly improved with the addition of the new big bore shocks that are included with the ST-RR. The big 16mm pistons and shock bodies are 23-percent large that the shocks on the previous ST-R for great stability even through dramatic temperature changes and long main events. These shocks provide unmatched stability over jumps and through the bumps to give this machine an unbeatable edge in the heat of racing.

New accordion-style shock boots keep the big 3.5mm shock shafts clean.



Chrome Moly Ring & Pinion Gears - The internal ring and pinion gears of the drivetrain are now formed of the strongest material, which means the ring and pinion gears will be better able to withstand the punishment of long races and the biggest, most powerful engines.



Lightweight Universal Driveshafts - The new driveshafts feature a lightweight design and are made from ultra-durable chrome moly steel - the strongest and most durable material ever used. Installed at the front, center and rear of the drivetrain, all of the driveshafts feature a distinctive black finish.



Low Profile, High Down-force Body - Looks are almost as important as performance to some racers, and the new ST-RR includes a modern, low-profile extended body to fit the long chassis of the truck.



Extended Wing Mount - A new rear wing mount raises the rear wing 18mm and moves it 8mm to the rear, creating more down force for better jumping performance and improved high-speed handling and traction.



Wide Offset Wheel Hubs - Previously optional wide offset hubs are now standard equipment for the ST-RR. They increase the width of the truck 18mm for more stability through uneven bumps and high-speed corners, which gives you the confidence to keep the throttle pinned through the rough sections for even faster lap times. Standard and medium offset hubs are still available for extra tuning options.



High-Grade (HG) Air Filter - Introduced in the 777 WC Edition buggy, the HG air filter features a new high-density, high-flow foam that is more resistant to various types of filter oil. The high-density structure of the foam means this filter captures more dirt particles to keep your racing engine running stronger for longer. The high flow rate means that the engine can still breathe exceptionally well and maintain maximum power even through a grueling 1-hour main event. The faceted texture of the outer filter provides more surface area, which means it breathes better for longer than a standard round filter.



Legendary Kyosho Quality - In addition to all the exciting new features, the ST-RR also features the unique manufacturing methods and premium quality materials that make Kyosho vehicles legendary for their quality, precision and durability. Most of the details are not obvious because some plastic parts look just like other plastic parts, but only the experience of seven 1/8 off-road World Championships (more than all other manufacturers COMBINED) provides the unique knowledge of exactly what materials and designs work best. Whether it's precision grinding for exact parts fit, high-grade race-tested composites, high-tech aluminum and steel alloys, space age coatings or premium-quality bearings, there are plenty of reasons why educated and experienced racers prefer Kyosho.





Technical specifications

Scale: 1:8

Length: 22.64 in. (575mm)

Width: 16.85 in. (428mm)

Wheelbase: 14.68-14.88 in. (373-378mm)

Track width: 13.90 in. (353mm)

Approx. weight: 151.7 oz. (4300g)

Final drive ratio: 16.54:1



Required for operation

Engine/21-28 class engine (P type) with Rear exhaust

Exhaust manifold & tuned pipe

Racing tires & foam inserts

Fuel and starting equipment

R/C system w/2 channels, 2 servos

Receiver battery for R/C system

Paint for body

HG Air Cleaner Oil (Part no. 96176)



Inferno ST-RR Truck

No. 31353B

Due: October 2007

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Old 08-03-2007, 01:42 PM   #2
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Pics with Body on???

Thanks,
Brad
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Last edited by Brad S.; 08-03-2007 at 01:43 PM. Reason: not much
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Old 08-03-2007, 05:47 PM   #3
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Thats a very long Trugs!
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Old 08-03-2007, 06:48 PM   #4
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now do i sell the current str with the long chassis already and buy a new one, or do i just upgrade the shocks and wing mount.
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Old 08-04-2007, 10:12 AM   #5
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Quote:
Originally Posted by vic0280 View Post
now do i sell the current str with the long chassis already and buy a new one, or do i just upgrade the shocks and wing mount.
I thought this was a longer chassis than the bce chassis?
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Old 08-04-2007, 10:19 AM   #6
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more pics of it and a little more info
http://www.redrc.net/2007/08/kyosho-...ggy/#more-4769
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Old 08-07-2007, 09:04 AM   #7
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what oil weight are you guys running in your kyosho bigbores. i'm running 700 with light green springs, just wondering what anyone else is trying.
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Old 08-07-2007, 09:59 AM   #8
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Quote:
Originally Posted by teabag View Post
what oil weight are you guys running in your kyosho bigbores. i'm running 700 with light green springs, just wondering what anyone else is trying.

If you are using the stock shock pistons, use the same weight oil you used in the normal shocks, with the light green springs. This seems to be the setup most of our team drivers are using.
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Old 08-07-2007, 01:27 PM   #9
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Can't wait to see this truggy and the new buggy in action.
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Old 08-10-2007, 01:12 PM   #10
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Only a new truggy will be released. /
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Old 08-10-2007, 01:47 PM   #11
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So the 777 sp2 will just have big bore shock's? No new buggy? RAT's.
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Old 08-10-2007, 06:53 PM   #12
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anyone know what is price truggy ??
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Old 08-18-2007, 11:13 PM   #13
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ST-RR is TQ for the Truggy nats!!!

Congrats to Ryan Lutz!!
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Old 08-19-2007, 08:00 AM   #14
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Quote:
Originally Posted by freefallmarine View Post
So the 777 sp2 will just have big bore shock's? No new buggy? RAT's.
Just wait till spring!
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Old 08-19-2007, 11:07 AM   #15
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Just wait till spring!
Sweet......
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