Anti-clockwise to loosen ... Clockwise to tighten ... You may want to get your steel slinger machined to the same dimensions of the stock YX slinger ...

 

thanks,yes i will do that,good idea.Its a real bummer but i was lucky though

 

Since you're in NZ there are two sellers of 1 piece CNC alloy slingers on ebay OZ ... The only thing I don't like about them is that they're machined to a sharp corner which could possibly form a stress riser ... They'd be better off if they had a radiused fillet ...



BRAND NEW CNC ALLOY OIL SLING & GASKET LIFAN 110-150CC - eBay Other Makes, Bike Parts, Motorcycle Parts, Accessories, Cars, Bikes, Boats. (end time 27-Jan-09 16:24:16 AEDST)



NEW LIGHT WEIGHT CNC ALLOY OIL SLING DUCAR LIFAN 140CC - eBay Other Makes, Bike Parts, Motorcycle Parts, Accessories, Cars, Bikes, Boats. (end time 17-Jan-09 20:51:57 AEDST)

 

my mate is going to machine it down to the stock x4r size.Do you think he should round of the edges? its a steel one off my old 125 ducar engine which was out of a 06 thumpstar pro.Do you think that will be fine?

 

A machined steel slinger will be super reliable ... I was referring to where the outside surface of the splined section meets the start of the flanged section ... You don't want a sharp corner at that point because it can cause a crack to start ... especially in an alloy part ... Use a radiused tool tip ... You should always remove sharp outer edges so people don't get cut ... that's a standard machinists rule ...



Here's a link on how to lighten steel slingers ... the overall length of the steel slinger should be left stock ...



http://img481.imageshack.us/img481/1653/volant20lifanxn1.jpg

 

thanks for that,my steel slinget im putting in is way bigger in diameter,should i not machine it down to the stock x4r slinger size.Its about 20mm bigger.If thats doesnt matter i will leave it

 

we have a steel unit now that the same size as the aluminum units ,,,,only stronger

TBolt USA, LLC » Pitbike Engine Parts » YX 150/160 PARTS & KITS » HRC STEEL OIL SLINGER

 

Does it matter it being bigger than stock though?

 

Does it matter it being bigger than stock though?

no,,,,you will just rev up slower but it wont hurt



history lesson 2005-now



basically the older gpx / jialing and lifan 120/140 motors had the large heavy oil slingers/filters

then

we machined them down at first until an aluminum unit became available

and these worked better and held up good on the gpx 124cc type motors

but

the yx150/160 motors like to break these aluminum units

so we went back to steel units trimmed to the lightest possible



my recommendation after doing this a great number of times

gpx124cc/yx140 = aluminum slinger

yx150/160 = steel slinger / turned or lightened

 

I was actually going to post that TBolt link ... That's what he should buy or do to his ... The steel spline is far stronger than an alloy spline ...



Does the clutch nut tool fit the clutch and crank nuts on Lifan and YX 150/160 engines ?



TBolt USA, LLC » Pitbike Engine Parts » CLUTCH KITS » 2 SIZE CLUTCH TOOL

 

I was actually going to post that TBolt link ... That's what he should buy or do to his ... The steel spline is far stronger than an alloy spline ...



Does the clutch nut tool fit the clutch and crank nuts on Lifan and YX 150/160 engines ?



TBolt USA, LLC » Pitbike Engine Parts » CLUTCH KITS » 2 SIZE CLUTCH TOOL

YES SIR

thats exactly why we stock it

 

go with the steel one from T BOLT ,you loose very little revs ,but gain a lot of tourqe .

we run them in our 146cc & up . they work great.

 

im just going to machine my down to the stock x4r size

 

Im guess i also have a broken oil slinger?