RE: Kyosho Inferno Us Sports

RE: Kyosho Inferno Us Sports
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RE: Kyosho Inferno Us Sports - 1/6/2008 3:05:17 AM

Posts: 135
Joined: 4/20/2007
From: owensboro, KY, USA
Status: offline

hey guys got a question. its kind of weird actually. the cooling head on my stock engine, when it get up to tempature it turns from blue to purple. Is that normal? just wondering. oh and the temp. hovers around 210 to 230

(in reply to REEGSf)

RE: Kyosho Inferno Us Sports - 1/6/2008 4:08:39 AM

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From: Morristown, NJ, USA
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Jerz is using a JR DZ9000t:

Torque: 291 oz/in @ 4.8V, 320 oz/in @ 6V
Speed: .18 sec/60° @ 4.8V, .15 sec/60° @ 6V

quote:

ORIGINAL: jnc011994

Hello Jerz,

Just got an info for a good Futaba Servo, this is the spec. It's a Futaba S9351 Servo. What Servo are you using?

Volts Torque Speed
4.8V 153.0 oz-in. 0.16 sec/60°
6.0V 192.0 oz-in. 0.13 sec/60°

Dimensions Weight
1.6 x 0.8 x 1.5 in. 2.0 oz.

Busta.... nice set wheels you got there... you sure you've been playing with your inferno? it's so clean.. . mine's has dust, dirt, mud, all over.. hehehe. time to clean a bit..

Thanks,
Jojo

< Message edited by spikeitaudi -- 1/6/2008 4:09:08 AM >

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Hyper ST PRO w/OS 21VZ-B V-Spec, Kyosho SP2 Electric Conversion, Team Losi Micro-T, Traxxas Slash
MARBETH Nitro Sports

(in reply to jnc011994)

RE: Kyosho Inferno Us Sports - 1/6/2008 11:21:18 AM

Posts: 61
Joined: 12/17/2007
From: Quezon City, PHILIPPINES
Status: offline

Ohhhhhh.... nice set of Servos....

) how much for those servos? JR DZ9000T. Those that I posted cost around 140US$. Does he use those servos for throttle and steering?

Thanks,
Jojo

< Message edited by jnc011994 -- 1/6/2008 11:23:13 AM >

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GO Engine .21 7Port

(in reply to spikeitaudi)

RE: Kyosho Inferno Us Sports - 1/6/2008 3:33:57 PM

Posts: 677
Joined: 6/13/2007
From: Lebanon, NJ, USA
Status: offline

JoJo - Im still using the stock Kyosho throttle servo. Its working great so I have no reason to change it. Its funny how guys say you need a faster servo. If I get a servo that is .1 seconds faster..................am I going to start whooping them on the track? Noooooooooooooooo. The only reason I changed the steering servo was because it stripped. You dont need the super duper high powered JR serov that I have. Those Futaba servos look sufficient. I only went with that because my friend who owns a hobby store recommended it. I just want something that will last. I trust him so I got it. If/when my throttle servo fails, ill get a new one.
Nick - I had the same thing happen to my stock engine. I dont know for sure, but to me thats a sign of high tempersture. Mine did run hot. I also had lots of problems with air leaks, and ultimatley the bearings started to leak. Hence I know have an OS V-spec engine in mine. You say yours is running around 240? If my memory serves me correctly, Kyosho recommends 120 deg C which is around 270, 280 deg F? How are you measuring your temps? Can you verify that a different way. I dont know for sure, but I am willing to say the purple coloring of the head is due to high temp. I have blue cooling heads on all 3 of my OS engines and none of them turn purple. Keep an eye on it and try to check the temp a fifferent way, or with a different temp gauge. Try putting a drop of water on the head after you run some high speed passes. If the droplet boils off in about 2 to 3 seconds, then you are running hot. Let me know how you make out. One of the things I like is to know how people make out with their problems, and what they did to find them/fix them. Thats how I learn too.

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MARBETH Nitro Sports

(in reply to jnc011994)

RE: Kyosho Inferno Us Sports - 1/6/2008 7:16:37 PM

Posts: 135
Joined: 4/20/2007
From: owensboro, KY, USA
Status: offline

yeah i was useing my failsafe temp gauge but i think it is wrong. i was at the track today and it got really hot around 320. i stopped running after that to keep from breaking it. it cost me 2 races today im so pissed. i may just end up going for an os if i cant get this sorted out. where would the air leaks be usually in the engine? i dont really have enough experience yet to know where to look or even how to seal it.

(in reply to Jerzferno)

RE: Kyosho Inferno Us Sports - 1/7/2008 10:48:09 PM

Posts: 61
Joined: 12/17/2007
From: Quezon City, PHILIPPINES
Status: offline

Hi Nick,

I have read somewhere (don't remember exactly where). How to check for Engine air leaks. You just need a ToothBrush, Foam/Hand Wash Soap, and some Fuel Tubing. What you do is insert fuel tubing in the carb, cover exposed part with cloth or foam, soak/apply toothbrush with foam/hand wash in the engine, then Blow thru the fuel tubing. You could then see bubbles forming on those air leaks. Seal the air leaks. Hope this helps.

Hi Jerz,
I'm still using the stock Servo on the throttle. But I need to replace the steering throttle as its already broken (front side got head-on first collision with sidewalk gutter

) Steering Servo got whacked. I then need to replace the servo..

Oh, can somebody have a pic of the underchassis of the Inferno? my Inferno got banged big time in the front. I need to see if the whole underchassis is straight or slightly bent on the front.

Thanks,
Jojo

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Kyosho Inferno US Sports
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RE: Kyosho Inferno Us Sports - 1/7/2008 10:53:48 PM

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Joined: 1/3/2003
From: leicester, UNITED KINGDOM
Status: offline

It kicks up at the front. You can check if its bent by checking your dogbones to see if they are completely tight. There should be a few mm of movement. Also undo your chassis braces and see if the holes line up correctly.

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(in reply to jnc011994)

RE: Kyosho Inferno Us Sports - 1/7/2008 11:44:27 PM

Posts: 61
Joined: 12/17/2007
From: Quezon City, PHILIPPINES
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Sorry for being a noob, but what's a dogbone?

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RE: Kyosho Inferno Us Sports - 1/7/2008 11:47:21 PM

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From: leicester, UNITED KINGDOM
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The shaft that contain a ball end with a little pin at each end. They run from the centre diff to the fron/rear diff.

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RE: Kyosho Inferno Us Sports - 1/8/2008 12:08:00 AM

Posts: 61
Joined: 12/17/2007
From: Quezon City, PHILIPPINES
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Got it.... check the dogbone and its a bit bend on the center, just a bit thought.... and i can still move the dogbone from center to front diff. I'll try to undo the chassis braces and check underneath

Thanks,
Jojo

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Kyosho Inferno US Sports
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RE: Kyosho Inferno Us Sports - 1/8/2008 12:15:38 AM

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From: leicester, UNITED KINGDOM
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If the chassis is bent just get another and get some CNC chassis braces. I bent my chassis on my inferno easily. There are a few compromises on the RTR kyosho's that you may want to upgrade. Also get 2 more planetary gears for each diff (so you have 4 total in each) along with diff oil. Put some decent shock oil in the shocks, get a good steering servo and a battery pack. That little lot should sort most of your problems out. If they still come with plastic spur change that to steel too.

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RE: Kyosho Inferno Us Sports - 1/8/2008 1:42:19 AM

Posts: 61
Joined: 12/17/2007
From: Quezon City, PHILIPPINES
Status: offline

Johny, sorry again for being a noob. But what's a planetary gear? and Spur? I know there are 3 differential, Front, Center Back... right? I got a Futaba9451 servo for steering and stocked servo for throttle.

Thanks,

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Kyosho Inferno US Sports
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RE: Kyosho Inferno Us Sports - 1/8/2008 2:47:39 AM

Posts: 135
Joined: 4/20/2007
From: owensboro, KY, USA
Status: offline

here is mine. i will try that leak thing tomorrow but i think i found one today but it was on the fuel tank nipple. fixed with some glue for the time being.

Attachments

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(in reply to jnc011994)

RE: Kyosho Inferno Us Sports - 1/8/2008 8:38:49 AM

Posts: 61
Joined: 12/17/2007
From: Quezon City, PHILIPPINES
Status: offline

Hi nick,

what are those that stick on top of your GXR.28?

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RE: Kyosho Inferno Us Sports - 1/8/2008 9:01:29 AM

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From: leicester, UNITED KINGDOM
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quote:

ORIGINAL: jnc011994

Johny, sorry again for being a noob. But what's a planetary gear? and Spur? I know there are 3 differential, Front, Center Back... right? I got a Futaba9451 servo for steering and stocked servo for throttle.

Thanks,

Planetary gears are the small gears inside each diff. As a general rule (but not always) there are 4 inside each diff. The kyosho just has 2. If you ever upgrade the engine these 2 will just not hold out. When you re-build you diffs put diff oil in each. 5000 front 7000 centre and 3000 rear is a good starting point. This will improve the handling of your buggy a lot.
A spur gear is the big gear on the back of your centre diff. This is where the drivetrain receives the power from the engine. Some of the kyosho sports had plastic ones which strip easy though i think the US sport has steel. Just check it anyway to be safe.

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RE: Kyosho Inferno Us Sports - 1/8/2008 11:27:02 AM

Posts: 61
Joined: 12/17/2007
From: Quezon City, PHILIPPINES
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Got it jonny, So i can just wait till i could/would replace the engine the go for the diff upgrade. brand you would suggest? or one with