Anyone any good on Nitro engines

[TWINSET]

I got a Kyosho .10 engine and have had it running, but at the minute it won't.

It's running on new fuel (same as before) glo-plug glows and fuel is getting thru. Clutch shoes are new and endbell has been suitably roughed up.

But when I open it up, it just splutters and dies.

It'll restart straight away, but die on throttle.

There are two adjustments, one for fuel line and one makes the little hole bigger under the air filter.

Someone said it's running too rich, but which dooey do I mess about with to rectify it?

[RETRO R/C]

Hello mate,

The "doohickthingamabob" you need to adjust is the larger of the two adjusters. This large one that runs out of the carb needs to be turned IN (clockwise) to "lean" it out a little.

Just do a few clicks at a time - rather than a tonne of them - as they can be quite sensative to it. As a general rule - you should screw the mixture screw in as far as it will go - and then come "out" (counterslockwise or "richen") - approximately 2 and a half rull rotations.

The one that is making the "hole bigger" under the air filter is the "idle" screw. You should adjust this so that you can have the lowest RPM idle - whils still being able to sit stationary for 20 seconds or so without it dying.

These are just general "rules" ...... a bit hard without actually being there mate........wish I was !!

Cheers

Darryn

[TWINSET]

It ticks over sweet, it's just blatting it sucks at []

I'll tinker with the doobrey and see what happens.

Also, are the clutch pinions standard, as this is on my quad and it needs to go a little faster to avoid ebay[8D]

quote:

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a bit hard without actually being there mate........wish I was

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Not a good place to be at the moment, if it ain't thunder and lightning it's too **** hot (plus it stinks of nitro fumes)

[RETRO R/C]

Might be best to wind it in all the way first - come out two full turns and go from there.

Let us know how it goes !!

Cheers

Darryn

p.s - minus 5 C and snowing (almost) here at the moment at 1 am in the morning !! Going to fly my chopper in the garage now !!

[TWINSET]

Cheers D will update once it runs!

Mind your head with the spinny things!

[SteveH(2)]

TS, Just like Dazzer says, it sounds too rich. You have a very basic carb there, with only one needle adjustment, so fine tuning will be out of the question! Those small engines run fairly hot, so lean her out (clockwise) at roughly an 8th of a turn until the barbling (4 strokish!) noise coming out yer smokey noisey thingymabobby stops. Then we'll go from there []

[RETRO R/C]

Wooooho - I can now hover for about 20 to 30 seconds without crashing !! (this is a major accomplishment - beleive me !! [xx(] )

Please make sure that when you are running well - that you still have a nice trail of blue smoke coming from the exhaust - as this shows that the engine is still getting enough oil to keep it properly "lubricated" !!

Cheers

Darryn "hover" Johnson

[TWINSET]

So what are we humming, Airwolf or Blue Thunder theme choon?[]

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Originally posted by RETRO R/C

Please make sure that when you are running well - that you still have a nice trail of blue smoke coming from the exhaust

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There's a fair bit of liquid coming out all over rear swing arm - seems slightly thicker than nitro fuel

[WillyChang]

quote:Originally posted by TWINSET

I got a Kyosho .10 engine and have had it running, but at the minute it won't. It's running on new fuel (same as before) glo-plug glows and fuel is getting thru.

But when I open it up, it just splutters and dies.

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Sounds like its running rich too.

Also hoping you've got a clean air-filter, a blocked one gives the same symptoms.

[TWINSET]

Wheeeeeeeeeee[]

Got it running sweet!

Two turns out, then back in a bit - Blue smoke!!!!!!

Cleaned air filter (it's actually not black foam!)

Put fatter hose from exhaust to tank (tapped M4 hole in tailpipe, drilled hole thru M4 grub screw, screwed into tailpipe as hose adaptor and voila[])

Also, replaced clutch bell and pads, these are the old (brand new) pads

Then on with the sand tires, for next weekend.

If anyones after bits for a Quad, Tower still got stock, but it's a Kyosho ATV over there[xx(]

CHEERS FOR ALL THE HELP GUYS!

[RETRO R/C]

ahhhhhhhhhhhhh - dont you love happy endings !! []

Who says the internet is full of bad advice !!

Cheers

Darryn

[TWINSET]

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Originally posted by RETRO R/C

Who says the internet is full of bad advice !!

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What, like flying a chopper indoors?[]

[WillyChang]

quote:Originally posted by TWINSET

Put fatter hose from exhaust to tank (tapped M4 hole in tailpipe, drilled hole thru M4 grub screw, screwed into tailpipe as hose adaptor and voila[])

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Oh.

Do be careful where on the muffler you've tapped the hole.

Different positions results in different pressures in the hose.

You don't want your tank to get too *much* pressure, as then

your engine will end up tuned very lean and depends on this

high pressure to get enough fuel for a correct mixture.

But when you open the tank and pressure is gone... your engine

will then run lean and might not idle whilst refuelling.

[TWINSET]

Cheers Willy

There was already a hole there, but the hose nipple was absent.

What the previous own had done was to use incredibly thin tubing (WD40 straw thickness) and it comes out of the muffler at such an acute angle it kept kinking or falling out.

At best, the 'nipple' I put in has a 2mm thru hole, and it seems to work fine.

[WillyChang]

quote:Originally posted by TWINSET

There was already a hole there, but the hose nipple was absent.

What the previous own had done was to use incredibly thin tubing (WD40 straw thickness) and it comes out of the muffler at such an acute angle it kept kinking or falling out.

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Come to think of it... that's probably how Kyosho designed it!!

Yeah, check the instructions - you're meant to cut the tube

at a taper and stuff it into the hole.

Only works with the kit provided skinny tubing, of course! [8)]

[TWINSET]

Great - was just going to take pics to demonstrate wonderful idea, only to discover the rear swingarm has rammed the grub screw into the hole and the pipes come off - Qualtiy design by the big K[!]

Gotta put another hole in now, reckon it matters where?

[TWINSET]

Dammit!!

Got it running, nice trail of blue smoke, but it cuts out at full throttle.

3/4 throttle and it goes for ages, but open it up and it just dies.

Starts again immediately, but exactly the same every time.

The only time it'll not cut out is with the rear wheels off the ground

PLEASE HELP ME[]

[hotgolf]

Try either leaning it out slightly, click at a time. Had the same trouble with my Sandmaster and found that because it was running too rich it would cut out.

Another thing you could try is a new tank. The seal went on the priming plunger of mine resulting in a lack of rank pressure. Could be worth a try.

[TWINSET]

Thought about the primer, all it is is a button on a rod, spring under button, then washer, then o-ring just sat in a recess.

When priming, there are bubbles coming out from around o-ring so that seems favourite at the moment.....

[SteveH(2)]

If it cut out at full throttle without so much of a splutter... then she's toooo lean. If she coughed n spluttered a bit first, then she's too rich. Get rid of the primer altogether, and check for any signs of fuel leaking from around the carb, back plate or bearing. Air leaks are not good. Also worth putting a fuel filter in if there's not one fitted, and extending both your fuel and pressure feed tubings to 8" a piece.

[TWINSET]

No splutter, nothing.

Didn't rev as if fuel was being cut (tube pinch) or anything untoward at all really.

But what is the deal with full throttle with wheels off ground?

[ml1275(2)]

Definitely too lean. My tmaxx did this on stock settings (new engine and carb - 2.5 turns out). Now setup at around 4 turns out (Quite rich normally) and it runs fine.

Cheers

ML

[TWINSET]

Can't get the **** thing to start at all now, noticed a split in the exhaust gasket - would this prevent all starting, or is something more serious the problem?

Fuel is getting thru, primer isn't leaking, messed around with needle, glo plugs are glowing and fuel is still flammable (checked it).

It doesn't even try to turn over, just thousands of pulls on the string, and nothing[]

[SteveH(2)]

Andy,

Just a few things to try....

Take air filter off, fully open carb (engine off), remove pressure pipe off pipe end, and blow. Is fuel getting into carb? Also can you hear any air escaping anywhere?

If fuel is gettin through, block the air intake of the carb with your thumb, and try fireing her up. (thumb off when running).

Make sure there's about a .5mm opening in carb when fully closed. You know what i mean!!

Should start with split gasket, but change asap.

Hows engine compression?

Oh, and get rid of the primer!! They are the biggest cause of running problems.

[WillyChang]

quote:Originally posted by TWINSET

..It doesn't even try to turn over, just thousands of pulls on the string, and nothing[]

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Sounds like you have a mechanical problem, nothing to do

with the fuel delivery, measuring or ignition.

At a pinch, I'd say your pullstart's one-way bearing

is overcome with oil and is now slipping/not-catching.

You can try to take it apart to degrease it, but the

lazyman's way is to grab your can of motorspray and

just drench the whole assembly. Squirt it in via

either the centre hole in the back where the shaft turns

(if there is a hole, sometimes not) or just where the

string comes out from.

Wait a few minutes for the fluid to dry and your

one-way bearing should be working again.