Is my engine overheated? [Archive] - Team daddyHOBBY

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Shoot_RS4MT2

04-05-2005, 10:57 AM

I ran my car like 12 tanks already... and this happens since last 3 tanks (previous 9 tanks, i was troubleshooting the engine coz of the irregular and low rpm).

When i ran it just now.. it was fine.. fast, good torque.. bla bla bla... then after using up quater of the tank, the rpm would be like normal, then low, then normal again... then low again then died... :furious

What could be the problem here? Overheated?
I know Singapore is a damn Humid and Hot country... :fire:

fuse

04-05-2005, 11:04 AM

rich up the bottom end and change the plug.

after you run in the engine always change the plug.

make sure your pressure tube is not stuck or clamped.

Mad Armour

04-05-2005, 12:18 PM

Hmmmm....looks like there's a crowd of RS4MT2 here! :up

Idling too low?

nightbreed

04-05-2005, 12:38 PM

Shoot_RS4MT2, your Rotor Starter still functioning? :P :evil

Shoot_RS4MT2

04-05-2005, 12:47 PM

rich up the bottom end and change the plug.

after you run in the engine always change the plug.

make sure your pressure tube is not stuck or clamped.

Orh... really must change ah??? i never change since i got the MT2 last month :D

Shoot_RS4MT2

04-05-2005, 12:48 PM

Hmmmm....looks like there's a crowd of RS4MT2 here! :up

Idling too low?

MT2 power...

my idling not too low.. already adjust to a "quite-ok" idling.

Shoot_RS4MT2

04-05-2005, 12:50 PM

Shoot_RS4MT2, your Rotor Starter still functioning? :P :evil

Its in perfect condition... and y does the starter has to do with overheating?
One must wonder... :rolleyes:

nightbreed

04-05-2005, 01:01 PM

Absolutely nothing. Just wondering. :) Sorry to hijack thread.

Shoot_RS4MT2

04-05-2005, 01:08 PM

Absolutely nothing. Just wondering. :) Sorry to hijack thread.

haha ... joker.. :hammer

PCC

04-05-2005, 01:55 PM

I have exactly the same issue previously on the MT2 - when on high, the engine is running real shiok iniitially then either dies or goes inconsistent after a run of 15mins. Then I richen the high and its ok.... Now... when the engine just starts, it takes a couple of minutes to go to good power but after the warmup the thing is performing well.

nic

04-05-2005, 02:04 PM

PCC

04-05-2005, 02:09 PM

on my MT2 when I went up to 20%, I made the high needle richer to compensate. Was not terminally overheating but if I stop the engine had to wait about 5 minutes before restarting. If keep refueling can go on for more than 5 tanks with no problems. But wanted to slow down the MT2 via a richer setting (due to retarded fingers) so I did the tuning when I went to 20%.

I only had 1 plug change after 2 bottles of fuel (the bigger one but dunno in terms of quarts).

Shoot_RS4MT2

04-05-2005, 02:11 PM

I got a over-heating problem too, mainly cause by the high nitro content I am using (25%). Want can I do to compensate it? use a colder plug? I already blew 2 plugs within the 800ml of nitro... (1 stock + 1 OS8).

Im using 25% as well.. Thats what Tai Sing recommend me...
I think i need to change the plug coz I havent changed mine.

What glow plug u all recommend?

PCC

04-05-2005, 02:13 PM

I tot my MT2 manual suggests 20%. Already that is really fast for me. Maybe you guys got more nimble fingers......

Mad Armour

04-05-2005, 02:23 PM

Mad Armour

04-05-2005, 02:24 PM

What glow plug u all recommend?

OS #8

Shoot_RS4MT2

04-05-2005, 02:27 PM

OS #8

thank u... :D

nic

04-05-2005, 02:41 PM

Richen the mixture lor. :L :L :L :L

Very rich already... think it give more smoke that my R50v2 :z

they didn't have 20%.. so I got 25% then... silly me...

Mad Armour

04-05-2005, 02:48 PM

Very rich already... think it give more smoke that my R50v2 :z

they didn't have 20%.. so I got 25% then... silly me...

I got meself a bottle of 15% and a bottle of 25%, mixed them 1:1 to get 20%. :D

sspp

04-05-2005, 02:52 PM

I got a over-heating problem too, mainly cause by the high nitro content I am using (25%). Want can I do to compensate it? use a colder plug? I already blew 2 plugs within the 800ml of nitro... (1 stock + 1 OS8).

i dun think your 25% nitro is the problem. I have been using 25% previously and i never had such problem

Shoot_RS4MT2

04-05-2005, 03:03 PM

OS #8 glow plug how much ah?
My workplace is 5mins walk to Tai Sing... think will get it later during coffee break.

nic

04-05-2005, 03:40 PM

Mad Armour

04-05-2005, 03:42 PM

OS #8 glow plug how much ah?
My workplace is 5mins walk to Tai Sing... think will get it later during coffee break.

Cheapest from Winnie and Jet Hobby. :up Can't exactly remember how much coz I bought in bulk and it was like quite sometime ago.

Mad Armour

04-05-2005, 03:43 PM

yeah.. maybe I go buy a 10% and mix them up to get 18% or something..... :bh

Is 10% available? Thot min is 15%. :z

Shoot_RS4MT2

04-05-2005, 03:46 PM

Cheapest from Winnie and Jet Hobby. :up Can't exactly remember how much coz I bought in bulk and it was like quite sometime ago.

where is Winnie and Jet Hobby???

i know Lucky Plaza, Far East Plaza, Chinatown there... Bukit Gombak mrt there..

fuse

04-05-2005, 03:47 PM

there is 10% nitro fuel but for planes....

Mad Armour

04-05-2005, 03:49 PM

where is Winnie and Jet Hobby???

i know Lucky Plaza, Far East Plaza, Chinatown there... Bukit Gombak mrt there..

Winnie is Swan Hobby at Orchard Plaza and Jet Hobby is at Fook Hai.

Mad Armour

04-05-2005, 03:50 PM

there is 10% nitro fuel but for planes....

Er.....heli/plane nitro can't be used for rc car engines.

Shoot_RS4MT2

04-05-2005, 03:51 PM

Winnie is Swan Hobby at Orchard Plaza and Jet Hobby is at Fook Hai.

ahhh... Orchard Plaza... got it...
Fook Hai i know liow but dunno the shop name..

nic

05-05-2005, 12:07 AM

heheh paiseh.. sidewinder minimum is 16%.

Orangie

05-05-2005, 10:17 AM

According to Traxxas... the engine is not designed to use anything more than 20% and is not recommended... that's why I thought 25% rich until full of smoke still super hot a little too much leow.

yeah.. maybe I go buy a 10% and mix them up to get 18% or something..... :bh

Read in some angmoh forum about the Tmaxx.... some are using 30% :sneaky:
:L :L :L

Have you tried richen the low?
Is your idle needle screwed in too much? If so, your low end is too rich.
Lots of smoke may be due to the fuel you using.

Hope it helps

Shoot_RS4MT2

07-05-2005, 10:46 PM

I got the OS8 glow plug installed and richen the low end to ½ clockwise turn. Still have overheating issue ley...

richen = lean out?
coz the manual says turn ½ clockwise to lean out. :confuse:

Mad Armour

08-05-2005, 12:27 AM

I got the OS8 glow plug installed and richen the low end to ½ clockwise turn. Still have overheating issue ley...

richen = lean out?
coz the manual says turn ½ clockwise to lean out. :confuse:

Of course it still overheat, clockwise means 'leaning'. :L :L :L Turn anti-clockwise 3/4 turn from your present position and see. Maybe you want to reset the needles to stock position and go from there.

To richen is to increase the fuel in the air:fuel mixture. To lean is the other way round.

Shoot_RS4MT2

08-05-2005, 12:58 AM

Of course it still overheat, clockwise means 'leaning'. :L :L :L Turn anti-clockwise 3/4 turn from your present position and see. Maybe you want to reset the needles to stock position and go from there.

To richen is to increase the fuel in the air:fuel mixture. To lean is the other way round.

HAHA>.. ok... so i got it wrong for my low end...
The low end is to cool the engine... right? :confuse:

Mad Armour

08-05-2005, 01:43 AM

HAHA>.. ok... so i got it wrong for my low end...
The low end is to cool the engine... right? :confuse:

No lah.....low end is for adjusting fuel mixture near idle. :L :L :L

Maybe this (http://www.nitromonkey.com/tuning.shtml) might help. :up

Shoot_RS4MT2

08-05-2005, 03:27 AM

No lah.....low end is for adjusting fuel mixture near idle. :L :L :L

Maybe this (http://www.nitromonkey.com/tuning.shtml) might help. :up

That is a very good info for me. Thanks :)

Shoot_RS4MT2

08-05-2005, 04:53 PM

Finally I run my truck without overheating. :D
2 tanks only but im happy... unlike previously,... only 3/4 of a tank overheated liow...

Hmm.. and maybe becoz of the rain? but i shall ignore bout the weather...

Thanks all u guys who have helped me :D

Mad Armour

08-05-2005, 06:34 PM

haowee

08-05-2005, 07:10 PM

Does anyone noe what is the motor that comes with the tt-01. How many turns is it.

Shoot_RS4MT2

08-05-2005, 11:16 PM

Erm, so wat's the problem? Can't be due to the weather you know... :rolleyes:

My engine is set too lean.. so i richen it lor.. thats all :D

Orangie

09-05-2005, 09:31 AM

Continue to play in that condition, its time to get new engine soon :L :L

Shoot_RS4MT2

09-05-2005, 10:51 AM

Continue to play in that condition, its time to get new engine soon :L :L

huh???
I read it at HPI FAQ, it says that the more lean ur engine is... the more tendancy u will get to destroy the engine... so which is which now?
:bigcry

Shoot_RS4MT2

09-05-2005, 10:57 AM

Engines
My engine isn't old but it's "worn out", why?
Things that cause the engine to wear quickly:

Improper air filtration
Running too lean
Not enough cooling
Cheap fuel

The solutions:

Improper air filtration... keep your air filter clean and oiled, upgrade to a high performance air filter if you run in areas with excessive dust. You'd be amazed at the engines that we see come in with dirt all over the inside of the engine. See the KITS--> "Why you need to care for your engine" link.

Running too lean... adjust the carb as often as needed so that you see a nice trail of smoke at FULL SPEED. The 15FE is pre-set and not adjustable on the bottom end setting, so it will always smoke enough at low to mid speed. Running it too lean on the top end will overheat the engine.

Not enough cooling... cut out your body windows according to our instructions. If you don't have enough airflow over the head you won't be able to keep the engine cool. It is highly recommended that you purchase some sort of temperature gauge, engine temperatures over 250F will cause the engine to wear quickly.

Cheap fuel... don't buy $10/gallon fuel that is blended for airplanes. Car fuel is designed for cars, the oil blend is different than helicopters and airplane fuel. Not all car fuels are the same, some have less oil than others. HPI Power fuel has 14% oil, which is a good balance. Too much oil will bog down the engine at idle and decrease performance, not enough oil will make the engine wear more quickly. Car fuel labeled "Race" usually has a little less oil, it is intended for maximum performance at the expense of engine life. If you are driving off-road you really don't need a "Race" blend. The fuel is what lubricates and cools the engine, don't skimp on quality.

Here are some excellent articles that might help: http://www.rcnitro.com/articles

taken from : http://www.hpiracing.com/index2.htm

Orangie

09-05-2005, 11:35 AM

huh???
I read it at HPI FAQ, it says that the more lean ur engine is... the more tendancy u will get to destroy the engine... so which is which now?
:bigcry

What I meant was if continue in that lean condition........ :D

Shoot_RS4MT2

09-05-2005, 11:43 AM

What I meant was if continue in that lean condition........ :D

Ooooooohh.... :ts

18ss

11-05-2005, 09:20 AM

Mad Armour

11-05-2005, 09:43 AM

i encounter the same problem but its as a result of the lousy throttle link design...after a bit of adjusting iys fine now....i running on 30%....you guys should try it....its very very DANGEROUS!
i am new...nice to find similar mt2 owners.

Think it's better to loctite the throttle screw at the carb. I've encountered someone with the same problem. That screw can become loose easily. :z

nightbreed

11-05-2005, 11:24 AM

Think it's better to loctite the throttle screw at the carb. I've encountered someone with the same problem. That screw can become loose easily. :z

Hey, that sounds like me! :L Anyway, my MT2 sitting in cold storage. EP is consuming every aspect of my life! (especially my savings) :L

Mad Armour

11-05-2005, 12:05 PM

Hey, that sounds like me! :L Anyway, my MT2 sitting in cold storage. EP is consuming every aspect of my life! (especially my savings) :L

:rolleyes: :z :L :L :L Yah, memory is still fresh, especially when gunning the throttle lever results in no change in the carb opening. :L

nic

14-05-2005, 08:39 PM

Finally got time for some R/C activity this morning.

I richen both the high speed (0.125) and low speed (about 5minutes)

prob seem to have went away... :L :up

Thanks guys