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Old 10-10-2016, 02:30 PM   -   Wikipost
R/C Tech ForumsThread Wiki: Inferno MP9 thread
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Last edit by: tobamiester
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 11-09-2014, 04:55 PM
  #18031  
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Anyone got a steering top plate and/or a radio tray laying around they could weigh and tell me what they weigh in grams? THX
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Old 11-09-2014, 06:01 PM
  #18032  
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i just did a whole season of hard core racing and i did not break any front arms at all. everything is kit except for all the inserts and bushings and driveline. which is the norm in all kits. and they all break my k car has no issues.
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Old 11-09-2014, 06:58 PM
  #18033  
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Originally Posted by KyoshoRed
Anyone got a steering top plate and/or a radio tray laying around they could weigh and tell me what they weigh in grams? THX
8.87g for the steering top plate.
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Old 11-10-2014, 04:32 AM
  #18034  
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Originally Posted by carpet Carlos
i just did a whole season of hard core racing and i did not break any front arms at all. everything is kit except for all the inserts and bushings and driveline. which is the norm in all kits. and they all break my k car has no issues.
+1 no issue for me either, didn't break a single part this season on both MP9

I'm a smooth driver but it doesn't mean I don't crash sometimes
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Old 11-10-2014, 03:28 PM
  #18035  
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+1 from me.

I changed to the TKI3 about 6 months ago, and have nearly five gallons of racing and practicing on it so far, and I've broken two left front arms.

However, each time it was due to extreme blunt force trauma when running into a jagged immovable object (end of railroad ties on the outside of the track) at a high rate of speed.

Those crashes would've broken the arm of any car I've ever had, and I've had most of them at some point.

I travel to races fairly regularly, and I don't see the k-cars breaking anymore than any of the other major brands. I love mine - it handles like no other buggy I've ever driven.
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Old 11-10-2014, 03:32 PM
  #18036  
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Originally Posted by Eivind E
I don't think that's the problem.
I ran Kyosho last season, then swapped to Hotbodies.
The 2014 worlds put the spotlight on the major Kyosho problem.
Cody King couldn't even pass start at the first lap before the front suspension arm was broken.
(I'd like to mention at this point I am not a hater, I liked the Kyosho, and I still have it, I love how it drives, etc.)

But every single time there's a race on, I see someone who drives a Kyosho with a broken front suspension arm, it's ridiculous.
After switching to hotbodies I've replaced the suspension arms once, after they were worn out.. I've put 30 races on the car.

The major problem as far as I see, is the front suspension arm weakness. I once asked Yuichi Kanai in a message on facebook if they couldn't make them stronger. There was never any reply. Still not.

After I switched to Hotbodies I've been talking with Torrance Deguzman on facebook all the time, if ever I need some advice he's quick to give it, I can't tell you how huge the contrast is to the non-response from Yuichi Kanai, he even sent me two big huge Hotbodies banners for me to bring to races.

It's been two years Yuichi, it's not too late to make a better suspension arm. Still waiting for your response to my message. Thanks.
Don't buy a mugen if you think a kyosho is hard on suspension arms. Been running the car for 2 years and only broke one arm.
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Old 11-12-2014, 07:32 AM
  #18037  
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anyone have a quick fix for the axles popping out? Im going to get the 93mm axles but would like to know of a quick fix since im racing tonight.
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Old 11-12-2014, 07:45 AM
  #18038  
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Originally Posted by RockStar_199
anyone have a quick fix for the axles popping out? Im going to get the 93mm axles but would like to know of a quick fix since im racing tonight.
I run the stock universals on mine and haven't had the problem with the MP9, but it seems like most times when axles are popping out, it's because of having too much suspension travel, and eliminating some of the droop won't allow the arm to come down as far and thus let the axle slip out. Maybe you have already tried this, but it's the only thing I can think of. Hope it helps...

Thanks, Brad
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Old 11-12-2014, 07:54 AM
  #18039  
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add a couple of 8X10 shims to the axle BEFORE inserting it in the hub bearings

in the front using aluminum c-hubs gets rid of most of the flex that causes the axles to pop out
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Old 11-12-2014, 10:02 AM
  #18040  
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I've never had anything pop out either which is odd because apparently allot of people are having that issue
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Old 11-12-2014, 10:23 AM
  #18041  
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Originally Posted by carpet Carlos
I've never had anything pop out either which is odd because apparently allot of people are having that issue
Has to be droop. I've set my shocks to correct length per Cody's setups and never had issue. I have the 93's on deck just in case...
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Old 11-12-2014, 12:14 PM
  #18042  
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Originally Posted by tobamiester
Has to be droop. I've set my shocks to correct length per Cody's setups and never had issue. I have the 93's on deck just in case...
If it is droop, how much droop are people running if they are having issues with 91mm front unis popping out?

Most setups call for a 98-100mm front shock length, but I always wanted to try a setup with more front droop. This would require using the longer shock caps and possibly unscrewing some threads on the shock end.
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Old 11-12-2014, 01:37 PM
  #18043  
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I think I've maxed out the front droop at around 103mm. I always run the TKI shock caps, mainly because they prevent the shock pistons from contacting the bottom of the inside of the shock body and creating stiction. I also unscrew my shock ends enough so the piston nut is flush with the top of the body at full compression. I also always run 93mm shafts on all 4 corners. While I can get droop to 103, the MP9 handles better when front droop is around 100.
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Old 11-12-2014, 02:07 PM
  #18044  
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Ok I need some help. Im running a Novarossi Maxy's Cinco BT Tuned Version engine on my MP9 and Im having to grind on the lower motor mount,slot out the motor adjustment holes, and grind on the motor mount on the engine itself in order to get the motor over towards the center enough for the mesh to be right and tight. Anyone got a solution or do I need to just keep grindin..lol Also I do realize most people are grinding on the engine mount some but mine seems excessive. THX
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Old 11-12-2014, 03:04 PM
  #18045  
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Originally Posted by AZRC4Me
I think I've maxed out the front droop at around 103mm. I always run the TKI shock caps, mainly because they prevent the shock pistons from contacting the bottom of the inside of the shock body and creating stiction. I also unscrew my shock ends enough so the piston nut is flush with the top of the body at full compression. I also always run 93mm shafts on all 4 corners. While I can get droop to 103, the MP9 handles better when front droop is around 100.
Thanks

With stock shock caps and without unscrewing the shock ends, I'm pretty sure the most droop you can get is a shock length of about 100-101, and even with full droop, I've never had an axle pop out, but I do run metal hub carriers.

Even though you say going to 103 shock length doesn't feel all that great, I will still try it to see the difference. Thanks again.
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