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Inferno MP9 thread

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Another TKI thread, more TKI4 Specific http://www.rctech.net/forum/nitro-of...buggy-kit.html

TKI4 Replacement Parts (Good for upgrading from TKI3) http://www.kyoshoamerica.com/Replace...ts_c_1505.html

TKI4 Optional Parts http://www.kyoshoamerica.com/Option-Parts_c_1506.html

Some notes on the new Towers/Long shocks here

Picked up a TKI3 and want to upgrade to TKI4 ? Here are all the updated parts:

Shocks

IF347-155 1.5X5 Pistons
IF471-01 Front Shock Body
IF470-01 Rear Shock Body
IF470-03BK Shock Adjust Dial
IFW154 Boots
IF346-05C Shock End Set

Wing

IF491BK Wing
IFW460B Wing Mount/Stay

Rear End

IFH006W Wheel
IF490 HUB
IF490-01 Hub Insert
IF492 Shock Pin
IF423HB Rear Arm
IF287 Hard Upper Rod Rear

Front End

IF489 Steering Rod Set
IF488 Knuckles
IF487H Front Arm
IFW458 Hard Lower Pin
IFW425 93MM CVD
IF286 Hard Upper Rod
IF486 Lower Susp Holder
IFW459 Servo Saver (Hard)
IF446B Ackerman Arm
IF426-64.5 Susp Shaft

Other

IF469B Filter
97035LW-13 Clutch Bell
IF453B Body Mount
IFW107GM Hexes
W300910 Washer
IF443B Center Diff Plate
IF444C Tank
IF479B Radio Box
96772 13x16x0.15mm Shim
IF481B Fuel Tank Stay
IFW336GM Wheelnut
IFB008 TKI4 Body
IFD403W TKI4 Decal

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Old 11-14-2012, 06:11 PM
  #11911  
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Originally Posted by nacho_gas
New Kanai options today
Wide Hub (Front)

http://buggysrc.blogspot.com.es/2012...el-kyosho.html


Seems clear to me that they are really trying to give the car a more "European feel" to best suit the track in Argentina. Wider hubs and added unsprung weight really benefit a flowing, high speed track with lots of shallow angle/high speed turns and high grip.

Everything looks tip top and K-Car Klassy
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Old 11-14-2012, 09:23 PM
  #11912  
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Originally Posted by hookem34
Seems clear to me that they are really trying to give the car a more "European feel" to best suit the track in Argentina. Wider hubs and added unsprung weight really benefit a flowing, high speed track with lots of shallow angle/high speed turns and high grip.

Everything looks tip top and K-Car Klassy
Think "stability, predictability".

The grey springs are dialed, we've been running them a lot on higher bite tracks down here lately. Seems to balance the car out a little better.
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Old 11-14-2012, 10:17 PM
  #11913  
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Are you running the grey springs all the way around?
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Old 11-14-2012, 11:12 PM
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no, they don't make grey springs for the rear.
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Old 11-14-2012, 11:45 PM
  #11915  
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What i'd really like to see from Kyosho are replacement pins for drive shafts.
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Old 11-15-2012, 01:07 AM
  #11916  
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Originally Posted by pointforward
What i'd really like to see from Kyosho are replacement pins for drive shafts.
Keep dreaming.....Kyosho make great cars but they are also unscrupulous business people who make odd size pins so we spend money buying whole drive shafts. That is also the reason for the 91 and 93 axles when 92mm would work on the front and rear with all the common suspension settings.

I realize that may be a bit harsh but what other reason is there?
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Old 11-15-2012, 04:40 AM
  #11917  
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Originally Posted by AZRC4Me

The grey springs are dialed, we've been running them a lot on higher bite tracks down here lately. Seems to balance the car out a little better.
Are you havinging to go up in oil wt when using? 700-750 ish CST?
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Old 11-15-2012, 09:22 AM
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Is it fair to say to run the 93 mm all the way around instead of the 91 mm or is it just preference? Addtionally glad to be back to the "K" car!
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Old 11-15-2012, 10:43 AM
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Originally Posted by hookem34
Are you havinging to go up in oil wt when using? 700-750 ish CST?
Not really, mainly due to the weather. It's a little colder here now, so what once was 600-650 now feels like 700ish. In warmer weather it'd be worth it to experiment with small incremental increases in shock oil viscosity.

Originally Posted by C. Nutz
Is it fair to say to run the 93 mm all the way around instead of the 91 mm or is it just preference? Addtionally glad to be back to the "K" car!
I would only run the 93s up front, if you run them in the rear with the narrow track width, they'll likely bottom out in the diff cups under full compression.
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Old 11-15-2012, 10:51 AM
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Originally Posted by hookem34
Seems clear to me that they are really trying to give the car a more "European feel" to best suit the track in Argentina. Wider hubs and added unsprung weight really benefit a flowing, high speed track with lots of shallow angle/high speed turns and high grip.

Everything looks tip top and K-Car Klassy
Isn't the unsprung weight supposed to add more grip on low grip conditions?! The track in Argentina seems to be everything but a high grip one...

Correct me if i'm wrong!
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Old 11-15-2012, 11:56 AM
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Originally Posted by Energyzer
Isn't the unsprung weight supposed to add more grip on low grip conditions?! The track in Argentina seems to be everything but a high grip one...

Correct me if i'm wrong!
Shh
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Old 11-15-2012, 12:29 PM
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Originally Posted by Energyzer
Isn't the unsprung weight supposed to add more grip on low grip conditions?! The track in Argentina seems to be everything but a high grip one...

Correct me if i'm wrong!

If the wheels (and other unsprung bits) have less inertia, the suspension reacts faster to bumps meaning the wheels stay in contact with the road better.
So adding more weight increases the inertia needed to make the suspension react, thus smoothing out the cars reactions.
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Old 11-15-2012, 01:55 PM
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Originally Posted by hookem34
If the wheels (and other unsprung bits) have less inertia, the suspension reacts faster to bumps meaning the wheels stay in contact with the road better.
So adding more weight increases the inertia needed to make the suspension react, thus smoothing out the cars reactions.
But more weight on the wheels (or as near to them as possible) should help keeping them in contact with the track, thus giving you more overall traction. I guess...

Isn't the advantage of unsprung weight, related to the fact that, when the buggy turns, it leans to one of the sides making the chassis roll. The more weight you have the more the chassis will roll (more or less, because you have other variables involved). Isn't it so? And since those weights are not "connected" to the suspension they won't make the chassis roll/wash out. Right?
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Old 11-15-2012, 02:53 PM
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Interesting how the unsprung weight debate has come full circle.

I need a couple Kyosho guys who are willing to volunteer to test a couple products. Must run MP9 or ST-RR and must run the stock Kyosho clutch and stock Kyosho shoes. IM me if interested...and must be planning to practice or race sometime in the next week or so. Thanks!
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Old 11-15-2012, 05:15 PM
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My take on this inertia thing is that the tyre is forced to comform to the surface of the track rather than have the suspension react thereby creating a more consistant contact patch between the tyre and the surface.
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