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very nice... and btw, i just came across a five speed box for a Z190 for...wait for it... just under 50 pounds. ooracing, in their sales section somewhere. may wanna snatch it up!+ https://www.ooracing.com/gearbox-kit-z190-5-speed.html (no VAT) and, as for my project... blew the ECU due to a...

yes, there is a part missing. a steel rod. and not just any old steel rod, it has holes in it in specific places, and i ground/polished to fit in that hole. they operate on hydraulics. the spring is just there to keep some marginal tension when the rod is replaced and the engine hasnt been...

ahhh, welcome to the world of imported toy bikes, with many honourable vendors, all fighting for the profit. the name means nothing. the plates mean nothing. nothing means everything! about the only thing of any interest to you is the engine number... down there below the sprocket somewhere...

figuring out second is easy...just look at the gears themselves. tiny one to a big one is first, and the two that are much the same size will be fourth... 2nd and third are in between... replace the fork. reassemble the thing and shim things if theres too much slop. get it back together. or...

two or three options spring to mind... you want a sprocket for either the honda c50 or a sachs madass, etc...just about any bike shop should have from 13t to 16t. stick to the small side for that bike ;) pretty sure every china engine uses the same spline, based off the honda... think about...

oh yeah, the new cam sprocket cover... 4 attempts! stuffed up three times on the first four holes! last one went flawlessly...

hmmm...nabiac huh? just up around forster? hmmmms... had a chat to the engineer (hard deciphering what he was saying...indian...must have changed owners since last time i went in a few years ago on some other project). basically, i can get a cert with an engine of no more than 20% more power...

wtf? you stuck a cbr into a grom? and got it cert? (shame its not the mc22, cbr250rr with four pots...like a real CBR should have!) whos ya engineer? how much he charge? i gotta get my honda cub50 cert when i finally get it all together... lifan 140, direct bolt in of course...tis why...

howdy all... my mate bought a crf with ADR years ago, and at some point, it decided to stop running and has sat in a shed since then. he has just moved so now its living in my shed and of course, i have the task of finding out whats wrong with it. extensive tests has led me to conclude...

goddamn it, why has that video gone private? stupid effin prick... oh well. i finally got to ride my lil 50! wee! only the first time its been running for, iunno...30 years possibly? and the turbo is doing what its meant to do, makes a nice whistling noise and seems to be making boost. how...

the clutch is the biggest giveaway that that there is a lifan or similar 125, or 119 when you actually do the math on bore and stroke. 1pfm52...or 4? the 54 is a genuine 125, and usually have big valves in them. look for a triangle sort of thing cast into one of the fins on the head, thats a...

the spring doesnt have to be perfect, as long as its there to push it up into the hole. the tensioner itself is hydraulic, it wont release until you let the oil out (by undoing the bolt you pulled out). but you do need the spring just to take up the slack until it builds up the oil pressure.

once again... you gotta talk to the right people and get the sprockets yourself. you only need two 1/2" pitch sprockets. 4SR 08B-1 (DUNLOP) Steel Chain Sprocket 1/2" Pitch BS Bore - 8T to 38T | eBay that listing is not cheap! i know my local sprocket place does them for at least 1/3 of this...

yes, yes, ok, power band means from idle to redline limit on rpm. "on the pipe" is correct, just like "expansion chamber" is any old exhaust and "tuned pipe" is correct. another misused and abused term. i didnt say a ktm 50 is a good learner bike, the exact opposite in fact...a pw50/80 is a...

the two smokers are fun, but can be a handful. currently i am doing courier work on an nsr 150 sp, its a blast. but you have to drop down three gears on every hill to get into band, blah blah, yarda yarda. it rattles, it buzzes, it blows smoke when you give it some after its idled for a minute...

ha ha, i just googled it...i saw someone riding one the other day, registered! awesome! built in 1980 or earlier...it will definitely be a magneto and points ignition. and the last thought is that the coil could be failing, or even the condensor (under the magneto) needs replacing. coil...

good old two strokes. simplest engines to fault find in. first, try a new plug. if that doesnt do much, next step. rip off the carb. rip off the exhaust. pour some fuel down the intake port. it should start. then rev its tits off for a second or two, then die. if it does...check that the...

you need, as mentioned, a 12v rectifier regulator. standard wires from the engine should be something with RED(white with red stripe, black with red stripe, etc), thats the charge for the CDI unit. something with BLUE, thats the trigger for the CDI unit. it runs, so thats fine...i assume? :)...

my bad. its just a jackshaft sprocket... as someone said, your question isnt exactly clear. some of what i said applies. go see an industrial sprocket supplier, get two sprockets, go see a machinist and offer him some beer to join the two together and bore them out for bearings.

ahhhh, misplaced washers... pretty typical. standard multiplate type clutch, youve probably figured out how it works by now... you gotta jet the carb right to make it more "responsive". starting from the main jet, moving to the needle(both height and taper), and ending up at the pilot jet and...