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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 01-04-2013, 03:22 AM
  #12766  
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i only had twice front lower arm breakage whole 2012 using plastic upper arms though and on a specific track only with bad landings and when i checked it the out drive breaks too. i dont know if its because the outdrive breaks then the unis break the arm.

anyway just wanted to try something different with my kit on mounting the 777 arms.

here is what smelly posted awhile back.

Originally Posted by smelly62
Originally Posted by smelly62
The latest WC front arms are better but not indestructable. Also the 777 arms can be made to fit, I haven't done it but Jerome Agoine from France has done it. The 777 arms are strong as. Both my son and I raced 777 since they came out until they were replaced by the MP9 and we never broke a front arm, broke everything around them but never the arm.
Originally Posted by likeaboss
Was the main reason? Supposedly stronger?
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Old 01-04-2013, 07:31 AM
  #12767  
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Originally Posted by AZRC4Me
If you guys are having issues with lower front arms, I'd suggest ditching the aluminum upper arms if you're running them. Completely unnecessary, and transmits forces to other areas of the car that may be undesirable. Not saying the plastic upper front arms will prevent lower arms from braking during cartwheels or lawndarts, but running aluminum instead of plastic sends forces to the next weakest link 100 times out of 100. The same is true for running the aluminum front c-hubs, you're more prone to break the lower front arm on the outside of the arm if you clip pipes, etc than if you ran the plastic c-hubs. But the aluminum c-hubs provide some tangible setup benefit, whereas the aluminum upper arms don't to my knowledge.
I have actually found the opposite to be in my experience with the KH upper arms. Just like the new rear lower arms being stiffer and controlling the geometry more precisly the KH upper arms help keep the lower arms from twisting/distorting thereby controlling the caster and other aspects of the suspensions geometry more efficiently and also helping prevent breakages where twisting or bending of the lower arm may have been partly the cause of such breakages.
You are indeed correct regarding weak links Sean and we have experienced a bent inner suspension pin on KH arms a couple of times but it has not caused any DNF's and they were bad crashes that bent the pins. I give the KH front arms the big thumbs up.
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Old 01-04-2013, 08:51 AM
  #12768  
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Originally Posted by AZRC4Me
...going to start my DNC 2013 builds here in the next week!
Only 47 days to go! Can't come soon enough!!!

Later,
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Old 01-04-2013, 09:19 AM
  #12769  
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Default More mid to exit steering

I've been looking for more steering from mid to exit. I run primarily at Revelation Raceway. Guys like Sean and Cody run here all the time. Definitely NOT even close to that level, but I have fun and try to compete in the lower levels.

I run Cody's Worlds setup on my tki3, but with orange springs all around and 42.5/27.5 Losi oils since the track is a little rough and bumpy. Seems to be a popular setup for this track. Car feels really planted, and easy to drive, but just looking for more corner speed and trying to get out of corners faster.

Here is a video when a friend of mine let me borrow his Ninja B02. I usually run Nova engines. This was the first tank I ran, so in the first few minutes I am trying to get used to the completely different power band. Any advice, driving or setup wise would be appreciated.

+ YouTube Video
ERROR: If you can see this, then YouTube is down or you don't have Flash installed.
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Old 01-04-2013, 09:28 AM
  #12770  
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Originally Posted by SEF
I've been looking for more steering from mid to exit.
Try going up in the center diff maybe? Kyosho has a 6K oil; that should give you more on-power steering. As of late I've switched over to 7-6-4 as my base setup. Car is really really good.

It's been stated before, but the aluminum c-hubs give more steering. Also, if you're comparing your car to Cody's keep in mind he has the Ti. screws and aluminum suspension balls. Weight, or lack of it, does make the car handle differently.

Regards,
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Old 01-04-2013, 09:32 AM
  #12771  
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Originally Posted by smelly62
I have actually found the opposite to be in my experience with the KH upper arms. Just like the new rear lower arms being stiffer and controlling the geometry more precisly the KH upper arms help keep the lower arms from twisting/distorting thereby controlling the caster and other aspects of the suspensions geometry more efficiently and also helping prevent breakages where twisting or bending of the lower arm may have been partly the cause of such breakages.
You are indeed correct regarding weak links Sean and we have experienced a bent inner suspension pin on KH arms a couple of times but it has not caused any DNF's and they were bad crashes that bent the pins. I give the KH front arms the big thumbs up.
Makes perfect sense.
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Old 01-04-2013, 09:35 AM
  #12772  
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SEF - try running Cody's rough/loose track setup, it's basically the Rev baseline setup. I've done a few things to tweak my setup from this baseline for Rev, I might be there this weekend getting some practice in. Come by and check out my car and you can even drive it if you want to see how it compares to yours.

A couple things - what are you running for front droop? What are you running for the front roll center, the H or L bushing? Sway bars?
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Old 01-04-2013, 09:59 AM
  #12773  
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Originally Posted by CoryD
Try going up in the center diff maybe? Kyosho has a 6K oil; that should give you more on-power steering. As of late I've switched over to 7-6-4 as my base setup. Car is really really good.

It's been stated before, but the aluminum c-hubs give more steering. Also, if you're comparing your car to Cody's keep in mind he has the Ti. screws and aluminum suspension balls. Weight, or lack of it, does make the car handle differently.

Regards,
Yeah, I wanted to experiment with different diff oils. 7-6-4 would definitely give more exit steering. I will try one change at a time and see how it goes.

Also, I am running the Al c-hubs. Not sure what the total weight is, but I do have some ti screws. I will have to see how the total weight of my buggy compares. Thanks.

Originally Posted by AZRC4Me
SEF - try running Cody's rough/loose track setup, it's basically the Rev baseline setup. I've done a few things to tweak my setup from this baseline for Rev, I might be there this weekend getting some practice in. Come by and check out my car and you can even drive it if you want to see how it compares to yours.

A couple things - what are you running for front droop? What are you running for the front roll center, the H or L bushing? Sway bars?
I will try Cody's Rev setup as well. If we run into each other, I may take you up on that offer. Thanks. I don't think we've ever met, but it would be nice to meet you.

As far as droop:99/118
Roll center: initially tried H, but did not like it and went to L
Sway bars: 2.3/2.5
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Old 01-04-2013, 10:10 AM
  #12774  
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Thumbs up

Thumbs up!

Originally Posted by AZRC4Me
Come by and check out my car and you can even drive it if you want to see how it compares to yours.
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Old 01-04-2013, 10:33 AM
  #12775  
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Originally Posted by SEF
I've been looking for more steering from mid to exit. I run primarily at Revelation Raceway. Guys like Sean and Cody run here all the time. Definitely NOT even close to that level, but I have fun and try to compete in the lower levels.

I run Cody's Worlds setup on my tki3, but with orange springs all around and 42.5/27.5 Losi oils since the track is a little rough and bumpy. Seems to be a popular setup for this track. Car feels really planted, and easy to drive, but just looking for more corner speed and trying to get out of corners faster.

Here is a video when a friend of mine let me borrow his Ninja B02. I usually run Nova engines. This was the first tank I ran, so in the first few minutes I am trying to get used to the completely different power band. Any advice, driving or setup wise would be appreciated.

+ YouTube Video
ERROR: If you can see this, then YouTube is down or you don't have Flash installed.
No bull crap, your buggy looked so good through the rough section. It just floated through that stuff. Car looked real good overall, good driving to btw. Nice and smooth. I wish I knew what to advise as far as setup but I am sure AZRC4Me will get you going.
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Old 01-04-2013, 10:51 AM
  #12776  
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Originally Posted by jpz_67
No bull crap, your buggy looked so good through the rough section. It just floated through that stuff. Car looked real good overall, good driving to btw. Nice and smooth. I wish I knew what to advise as far as setup but I am sure AZRC4Me will get you going.
Thanks, this car will definitely make anyone better So much easier to drive than anything else I've owned. I'm sure I'll find the little extra speed that I am looking for. Whether it's practice or setup or probably both.
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Old 01-04-2013, 10:52 AM
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Originally Posted by SEF
Thanks, this car will definitely make anyone better So much easier to drive than anything else I've owned. I'm sure I'll find the little extra speed that I am looking for. Whether it's practice or setup or probably both.
Yeah, the MP9 is like cheating...it really is!

Later,
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Old 01-04-2013, 02:01 PM
  #12778  
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Originally Posted by SEF
I've been looking for more steering from mid to exit. I run primarily at Revelation Raceway. Guys like Sean and Cody run here all the time. Definitely NOT even close to that level, but I have fun and try to compete in the lower levels.

I run Cody's Worlds setup on my tki3, but with orange springs all around and 42.5/27.5 Losi oils since the track is a little rough and bumpy. Seems to be a popular setup for this track. Car feels really planted, and easy to drive, but just looking for more corner speed and trying to get out of corners faster.

Here is a video when a friend of mine let me borrow his Ninja B02. I usually run Nova engines. This was the first tank I ran, so in the first few minutes I am trying to get used to the completely different power band. Any advice, driving or setup wise would be appreciated.

+ YouTube Video
ERROR: If you can see this, then YouTube is down or you don't have Flash installed.

Morning sef

A few suggestions
Less droop in front
Stiffer rear springs
Centre diff oil I would run thinner

It's very difficult to try and suggest things to try. It all depends on track surface driving style tyres. I found I had exit under steer when I ran 10/10/5 diff oils I have since dropped to 8/8/3 and it is much better.
I run the blue springs all round with 40rear 35 front Losi oils with 1,3/8 pistons.

Another thing have you got the std pistons or 1,3/8 pistons because with the std pistons its also possible to have the power on under steer because the rebound is slower and on power the front wheels will take longer to return to the surface completely leading to under steer.

You could also play with roll bars I am running 2,8mm front 3,0mm rear no rolling at all. But then softer springs all round to help with the bumps and ruts.

Roll bars won't effect power on only turning in and mid corner.

Bottom line it sounds to me your a little soft on the rear leading to power on understeer.

Just my 10cents worth
Brett
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Old 01-05-2013, 12:05 PM
  #12779  
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Hey guy's are you using the velcro slot on the mud guard's? Does it really make a diffrence keeping the car cleaner/loosing the body in a crash?
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Old 01-05-2013, 01:08 PM
  #12780  
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Originally Posted by freefallmarine
Hey guy's are you using the velcro slot on the mud guard's? Does it really make a diffrence keeping the car cleaner/loosing the body in a crash?
I use velcro on the body, but I can't seem to find velcro that can withstand the heat of the pipe plus all the dirt and abuse. The pipe side velcro seems to fall off after a few runs. Not sure how much difference the velcro really makes though.
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