would any one be able to give me the carb settings for the engine of this car please?

cheers

Hello Kenny, dont forget to say hello to all the members in the Newbie section. always good to say a propper hello.

i have a Mp7.5 althou Heavily moded. Just came back from a weekend bash. Totally destroyed it but now up and running again.

i assume you are refering to a standard GXR 21 Kyosho engine?

HSP 2.5 to 3 turns out from fully closed. the LSP should be about .5mm in from the flush position.. :thumbs_up:

thanx for the help m8 ill have to try that 2moro.
you car looks awsome btw lol

is the hsp the black screw with a spring on it in side of the carb lol?
feel like a noob askin lol but cant do much without knowin the difference lol

The (HSN) is the large screw that sticks up in a brass sleve
The small Black screw with the spring is the idle.

http://www.rcdocuments.com/file_info...5%20Manual.pdf

http://www.ripmax.com/Images/PDF_Files/Exp...nferno_mp75.pdf

and what should the idle be at?

there is no setting. just set the engine idle speed to what ever suits. not to slow that it will die, but not to fast that the car wants to move forward. :thumbs_up:

ok i set it to this today and heated the head with a hai dryer and after a while i got it started. it sorta went ok but the revs gradually got higher untill i had to turn it off. then it would go again lol, any ideas?

may be running a little lean, start to richen it little by little. rnning it in between. making sure the oerformance improves each time.

i took to it today and with every pull it sounded lik it was gonna go then the recoil cut it off and after about 10 minutes the pull start broke lol, so i am goin to try and get my starter box working at some stage this weekend when i get battery charger

if its starting and cutting out straight away, screw the idle in slightly to give it higher revs from start and blat the controller and see how it idles...still cutting out, then increase idle screw slightly (turning in)

put the car on the floor and slowly very accelerate, keeping the revs up. once up to speed, go full throttle and see if it bogs down or leans out top speed

if it bogs down from full throttle then its running too rich so lean it out, and if its cutting out top end then its running too lean so richen it slightly

Also let the car warm up slightly, and adjust idle till it stops cutting out, then work on the rich or lean part

its a fine line between the idle and running rich and lean, like literally .5 of a mm, so dont do any drastic turns to richen it or lean it, turn it a tiny bit at a time

The pull starters on the Mp7.5 are easy to fix, just replace the cord. :thumbs_up:

http://cgi.ebay.co.uk/ws/eBayISAPI.dll?Vie...=STRK:MESELX:IT

:thumbs_up:

thanx ill deffo be buying a few of them lol

yayy new pull cord has jus arrived lol

its starting now ok but when it starts the revs get higher an higher till it screams its head off

turn your idle screw out and check the trim settings on the handset.

im back to not startin at all lol.
i think this is the most tempermental thing ive ever come across lol

thats what I thought at first, but a quick sunday session of meeting up with the guys taught me a lot of things very quickly, and if you are local to us or a club, I cant recommend enough doing the same thing

I am now pretty much confident in setting up and running mine

as Ian said if its screaming upon start up, adjust trim to factory settings, and turn the idle screw out till the idle drops, but not enough to stall (do this on a box of course)

Once all the wheels have stopped moving by themselves, then idle is ok (and if the engine is still running of course) probably as its not starting properly, then I would run a slightly higher idle than usual just to ensure it stays running and warms up

once the idle is ok, its just the fueling as stated in a previous thread on how to setup and sort out

i will dig my old Kyosho GXR21 engine out of the shed. i will tell you what its settings are. last time it was used was last spring. was running great.

here you go..






:cruising: :cruising: :cruising:

Okay Kenny. Take the air filter off. look down the carb barrel.as you turn the idle screw in or out! you will see it moving the throttle slide valve. you want a gap about 1mm. in other words you are holding the throttle valve 1mm open. if you screw it in the valve will be opened some more and the revs will encrease. All my needle settings are from the CLOSED position.

HSN / 2.5 turns out
LSN / 3.75 turns out.

try that. make sure your throttle trim is set a zero bias (0) or middle position before you start. Also have you checked to make sure the throttle linkages are set correctly.very important. The throttle must open fully and more important when you apply the brakes the throttle valve must not move inwards. if it does this will cause your car to stall when breaking.

what one is high speed and which is low speed?
i know one is the brass one
and from the manual i see that the idle is screw that is on right side of carb

cheers

HSN/ The Large screw in the Brass sleve.

LSN/Large Black screw in the side of the carb.

IDLE/ small Black screw with spring.

:thumbs_up: :thumbs_up:

i tried these settings. the car starts for lik 20 seconds then dies. if i put fuel directly into carb it goes for same again an dies again but i cnt get it to keep goin

before you try and start it, turn the trim tab up on the handset to open the throttle a little more.

then try again. :thumbs_up:

keep going Kenny :)

i can get it to start keepin it goin is da prob lol

adjust the throttle trim like i said, then note what position the HSP needle is at and the richen it a little bit then truy again, and keep repeating richening it. If you think that this is making it worse and not improving. put the needle back where it was and lean it of little at a time and repeat. :thumbs_up:

ok im at it atm and its starten an drives a few circles then dies off im not sure wht it is cus i futered at everythin a little and adjusted back to few different set ups ive herd of an none seem to keep the car running lol

start of with the setting you had that got the engine started. Then from there very small adjustments. dont keep jumping from one setting straight to another different setting blah blah blah... you know what i mean.

i can get it started when i put fuel direct to carb
it then runs for a little bit an cuts out. i cant figure out what ajustments i should make to make it stay running

ok so i tried your carb on there now. doing the exact same think and im sure it isnt the engine as i tried it on my brothers car too and his is doing same thing. i dont think its the glow plug as its still working and the fuel couldnt be dead because it worked ok on my 1/10 scale

so strange Kenny. try a RB6 glow plug. what car does your brother have?

same as mine. the only other problem could be the fuel but strange that it works in wee car an not in buggy

Why did you not say this at the beggining..Lol. you could of made life so much easier...

this is what you need to do. take your engine out with my carb fitted and put it in your Brothers chassis. I am asuming that your brothers cars runs fine.

do this and try it. if your engine starts which i think it should then possibly then there must be a problem with the fuel line, filter, tank etc etc If your engine still does not work then put yor brothers engine into your chassis and see if that works.

by doing this it will iliminate a large proportion of some possible problems . This will narrow down where to look.

NOTE. change the glow plug first..............

no his doesnt work either thats what made it worse lol.
the orginal glow plug is still working ok but i will get a new one and i will get fuel tomorrow also. what % nitro do u recommend?

25% OPTIFUEL :thumbs_up:

that will do.

if his does not run does that not suggest fuel? its the only thing that they have in common that is used by both cars?..lol

you should of mentioned this first..lol
never mind. ;) ;)

yea but i thought the fact it was workin on my other car, and that the cars were starting and running for a bit

Hmmmmm im just not sure what the problem is...?

does the glow plug not only be used to start the should it not jus go out cus there is no heater on it?

the plug is only to get the engine started, once it is running and gets hot it will not need it.

hi mate , have you sorted out your problem ?
cuz my brother-in-law bought the same car , and funny enough he has the same problem , the car takes some time to start , when it does it revs so much i ran away thinking it was gonna explode :joker: , then started adjusting all needles to factory settings , good for a while then stalls (the original trasmitter looks a bit crap bdw, my one from my losi micro works better than that imho) ,moved on to TH trim and we managed to get it ok stopped and working , get it runnin , brake stalls , more adjusting and and it starts to go mental again , like it has a mind of it's own :whip: , it seems that there is no middle bit with this car.

ps: the pullstart is broken aswell, but i think that's fixable