fekker Posted December 11, 2007 Share Posted December 11, 2007 have a wee game of guess who .............. guess who saw a wee screw head on the side of his carb on his force 25R engine and decided to fiddle with it ??? oh go on ... have a guess thinkin its a mid range needle / supply needle valve , basically its at the end of the carb at the HSN side anyone know what this little bugger is supposed to be set to ???? thinking it could be causing my engine to be groggy please help a muppet in distress Quote Link to comment Share on other sites More sharing options...
Evil_Sheep Posted December 11, 2007 Share Posted December 11, 2007 There should be a screw sticking out in a metal cylinder thing, which is High speed needle, one probably at the front of the carb (looking at it from the front) which is probably the idle screw, and one to the closet side of the HSN which should be the Lsn, its usually going through length ways and is opposite to the bit the servo controls Quote Link to comment Share on other sites More sharing options...
fekker Posted December 11, 2007 Author Share Posted December 11, 2007 aye but this is an extra one !!!! the book says its a supply needle valve Quote Link to comment Share on other sites More sharing options...
Evil_Sheep Posted December 11, 2007 Share Posted December 11, 2007 Sorry i cant help Quote Link to comment Share on other sites More sharing options...
fekker Posted December 11, 2007 Author Share Posted December 11, 2007 no bother mate ... thanks for replying anyway Quote Link to comment Share on other sites More sharing options...
martin Posted December 11, 2007 Share Posted December 11, 2007 Get a photo of it mate and i will be able to tell you. marty Quote Link to comment Share on other sites More sharing options...
fekker Posted December 11, 2007 Author Share Posted December 11, 2007 how do i upload pics . asks for url ... i dont have one cos pics are only on puter Quote Link to comment Share on other sites More sharing options...
fekker Posted December 11, 2007 Author Share Posted December 11, 2007 hope this works Quote Link to comment Share on other sites More sharing options...
andy_n Posted December 11, 2007 Share Posted December 11, 2007 basically if you can ever get that set right again then ur a genius ideally it would have to be sent back to the factory so iv been told as the car i had someone had messed with it easiest thing it to have a mess but itll never really run perfect again or buy a new carb Quote Link to comment Share on other sites More sharing options...
Ziggy122 Posted December 11, 2007 Share Posted December 11, 2007 hi there mate I'd say that is the Low Speed Needle, as it is a direct feed from the high speed needle The needle which is extruded which has the fuel tubing connected is the High Speed Needle Hope this helps Ziggy Quote Link to comment Share on other sites More sharing options...
fekker Posted December 11, 2007 Author Share Posted December 11, 2007 cheers zig yeah thats the hsn above but the lsn is at the other side of the carb would i be wrong to assume there is such a thing as a mid throttle needle?? Quote Link to comment Share on other sites More sharing options...
andy_n Posted December 11, 2007 Share Posted December 11, 2007 yes it is a mid range needle and never to be played with lol well so iv been told i ended up just flogging the engine a while back just have a mess nowt to loose Quote Link to comment Share on other sites More sharing options...
fekker Posted December 11, 2007 Author Share Posted December 11, 2007 so basically that screw has just screwed the engine ha ha why oh why wasnt it just welded in place ??? Quote Link to comment Share on other sites More sharing options...
Mr Terminator Posted December 11, 2007 Share Posted December 11, 2007 It is the mid range needle but thats bulls&*t about it never being right again,my Hyper had this screw adjusted and it took 2 mins to put back to factory.It just has to sit flush as in the picture,thats about normal the HSN and LSN adjustment will compensate for it at that setting.My Hyper goes like stink now.... Quote Link to comment Share on other sites More sharing options...
Anthoop Posted December 11, 2007 Share Posted December 11, 2007 (edited) Yes that's the mid-range needle.Should be set flush to the casing. Edit...ah beat me to it Mr.T Edited December 11, 2007 by Anthoop Quote Link to comment Share on other sites More sharing options...
Mr Terminator Posted December 11, 2007 Share Posted December 11, 2007 Just hope the guy reads it before he slings his motor away.... Quote Link to comment Share on other sites More sharing options...
fekker Posted December 11, 2007 Author Share Posted December 11, 2007 that was SOOOOOOOOOO close ... aye i just kinda tinkered with it but realising i had no idea what it was supposed to do i set it back to approximately roughly where it was when i got it ... cheers fellas thats a load off but unfortunately ...................... NOBODY GUESSED WHO YET !!!!! Quote Link to comment Share on other sites More sharing options...
Mr Terminator Posted December 11, 2007 Share Posted December 11, 2007 that was SOOOOOOOOOO close ... aye i just kinda tinkered with it but realising i had no idea what it was supposed to do i set it back to approximately roughly where it was when i got it ... cheers fellas thats a load off but unfortunately ...................... NOBODY GUESSED WHO YET !!!!! The missus... Quote Link to comment Share on other sites More sharing options...
hoss Posted December 11, 2007 Share Posted December 11, 2007 Visit My Website Quote Link to comment Share on other sites More sharing options...
Mr Terminator Posted December 11, 2007 Share Posted December 11, 2007 Visit My Website The settings on there are different to the sheet I got from Modelsport for the carb on the .28 Machstar.This I have gives settings for all 4 adjustment points... Quote Link to comment Share on other sites More sharing options...
fekker Posted December 11, 2007 Author Share Posted December 11, 2007 how'd ya guess ?? youve just won... no i shouldnt say .. it'd ruin the suprise i've a mate who's middle name is " if its not broken....." (note to self) GOTTA STOP FIDDLIN Quote Link to comment Share on other sites More sharing options...
chris52 Posted December 11, 2007 Share Posted December 11, 2007 It is the mid range needle but thats bulls&*t about it never being right again,my Hyper had this screw adjusted and it took 2 mins to put back to factory.It just has to sit flush as in the picture,thats about normal the HSN and LSN adjustment will compensate for it at that setting.My Hyper goes like stink now.... the engine in question is a force so i think the needle is the lsn but mr t you are wrong, if on the hyper engines you adjust the mid needle it is extremley hard to retune for max performance. if you have on your then you are lucky. the needle if factory set it is impossible to reset this yourself except by a good luck shot in the dark. see the link hoss has for info chris Quote Link to comment Share on other sites More sharing options...
hoss Posted December 11, 2007 Share Posted December 11, 2007 force 25 pdf Quote Link to comment Share on other sites More sharing options...
fekker Posted December 11, 2007 Author Share Posted December 11, 2007 (edited) going by the manual that came with the rex the lsn is the screw at the far end attached to the throttle servo .... damn im confused now sorry hoss that link aint workin mate Edited December 11, 2007 by fekker Quote Link to comment Share on other sites More sharing options...
hoss Posted December 11, 2007 Share Posted December 11, 2007 (edited) NO the one at the end that connects to the throttle ,is the MID RANGE AN SHOULD NEVER BE TOUCHED but you have so set it as flush as you can,or ring the states lol the one youve pointed out is the LOW speed needle on HYPER engines the needles are reversed Edited December 11, 2007 by hoss Quote Link to comment Share on other sites More sharing options...
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