Got My Ebay Chinese 4-Stroke Belt Drive Kit Today

[Deleted Member 4613]

DO NOT ORDER THE SLEEVE OILITE BUSHINGS I REFERRED TO
ABOVE, as they are out of spec. The ID is less than 15mm and
the OD is larger than 20mm, so they do not fit. Very disappointed,
so I will reem the clutch housing to accept the 15x21x4 mm
bearings I ordered. I hope they fit the shaft. Will get them
today. The only thing I can say is that they are genuine
oilite. They have a dull speckled finish and an oily feel.
Just got the sealed bushings and look much mre promising.
Their id is 14.92mm and the shaft is 14.95mm - just need
to remove about .03 mm, very easy, and their OD is
21mm. The clutch housing is about 7mm thick so I need
to hone out about 1mm. Should be no problem with
a brake cylinder hone.
UPDATE: I'M SORRY, THE BUSHINGS ARE GOOD. I HAD A
SLIGHT BURR ON THE SHAFT WHICH WHEN REMOVED,
THE BUSHINGS FIT EASILY OVER THE SHAFT, BUT I WILL
STILL NEED ENLARGE THE CLUTCH HOUSING VERY SLIGHTLY
TO GET THEM IN.

 

[Chainlube]

DO NOT ORDER THE SLEEVE OILITE BUSHINGS I REFERRED TO
ABOVE, as they are out of spec. The ID is less than 15mm and
the OD is larger than 20mm, so they do not fit. Very disappointed,
so I will reem the clutch housing to accept the 15x21x4 mm
bearings I ordered. I hope they fit the shaft. Will get them
today. The only thing I can say is that they are genuine
oilite. They have a dull speckled finish and an oily feel.
Just got the sealed bushings and look much mre promising.
Their id is 14.92mm and the shaft is 14.95mm - just need
to remove about .03 mm, very easy, and their OD is
21mm. The clutch housing is about 7mm thick so I need
to hone out about 1mm. Should be no problem with
a brake cylinder hone.
UPDATE: I'M SORRY, THE BUSHINGS ARE GOOD. I HAD A
SLIGHT BURR ON THE SHAFT WHICH WHEN REMOVED,
THE BUSHINGS FIT EASILY OVER THE SHAFT, BUT I WILL
STILL NEED ENLARGE THE CLUTCH HOUSING VERY SLIGHTLY
TO GET THEM IN.

No wait, sand down the bushing instead. You can always re-size the clutch housing later if you have to get a bearing.

 

[Chainlube]

The best way to sand down that bushing is to get a long bolt, nut and a couple washer that are slightly smaller than the bushing. Put the bolt through the bushing with a washer on each side and tighten down the nut. Stick in a drill or better yet a drill press and run it down with some emery cloth or good sandpaper.

 

[Deleted Member 4613]

NO, NEVER SAND AN OILTE BUSHING BECAUSE SMALL GRIT CAN PLUG THE
PORES IN THE BUSHING. THEY CAN NOT BE SANDED WITHOUT DAMAGING
THEM.

 

[Deleted Member 4613]

I had to buy a simple 15mm id washer to replace the original
washer which was 5/8 inch id, and due to its flopping
around the shaft, was binding against the oilite bushing. With the
new metric washer, the system works beautifully. This is definitely
an upgrade to the bronze, greased bushing that came with the
kit. I bought the washer at Ace hardware. I'll hone the housing
a little and take pictures of the new system, and then decide
if I want to mod with the sealed bearings which requires
taking off 1mm of the housing. I estimate the housing
thickness as 7mm, so it should not be a problem if I'm careful.
To get the oilite bushing in the clutch housing, I 'll have to
remove about 0.20mm. I might be able to do this just with
sandpaper.

 

[Wrench]

I may be wrong in understanding your bushing application but the way I see it is.
You were planning on installing sealed bearings which would require a pressed fit.
So sanding (filing) the OD of the Oilite Bushing for a pressed fit would be OK and would not ruin the Oilite Bushing since it's the ID of the Oilite Bushing that gonna be spinning against the shaft. It sill will be able to be Re impregnated with oil too.
Besides these Bushings can be machined, Oilite suggests to re impregnate bushing after machining. Because oil sweats out when machining
I've machined, filed, grinded, sanded and cut Oilite bushings they still work fine.

They say not to sand for liability, that their product will be 100% as advertised. But the bushing will still be fine for your needs

Instead of sanding the OD of the Oilite Bushing use a File so ya don't introduce any sand to clog up the pours
Rig it up in a Drill motor so you can spin the Oilite Bushing against a file. Boil it in 30w oil for 10 mins when your done

 

[Deleted Member 4613]

I do not want a press fit for the oilite. I'm want an easy fit so the
bushing can be removed easily to re-impregnate it thoroughly. I don't want any
damage to the bushing that may be caused by sanding or filing. My goal is to first to
develop the best possible solution using Oilite, for users who may be hesitant
to working with press-fit sealed bearings. I will test the oilite solution first and
hold back on installing the press fit bearings until I test the Oilite solution.
It could be an easy fitting, properly installed oilite bushing that can be easily
removed for re-impregnation may be the best solution for most users. I guess
I am a perfectionist, but thanks for your suggestions.

 

[Chainlube]

I do not want a press fit for the oilite. I'm want an easy fit so the
bushing can be removed easily to re-impregnate it thoroughly. I don't want any
damage to the bushing that may be caused by sanding or filing. My goal is to first to
develop the best possible solution using Oilite, for users who may be hesitant
to working with press-fit sealed bearings. I will test the oilite solution first and
hold back on installing the press fit bearings until I test the Oilite solution.
It could be an easy fitting, properly installed oilite bushing that can be easily
removed for re-impregnation may be the best solution for most users. I guess
I am a perfectionist, but thanks for your suggestions.

We all like tinkering, but economics has to play a part in it too. If you mess up the housing, how much is a new one? A bushing sounds cheaper and more ready available. You might end up with a bearing that is bigger yet.

 

[JerryAssburger]

Okay- this is what I have found.... for the Real HS 142F, there is no rocker shaft set-screw, and I'm assuming it's held in place by the valve cover. BUT, on the CLONE of the HS, the mount for the shaft is different. It IS threaded for a small set screw, but it also appears that the rocker is held in place by the valve-cover. Without knowing the exact thread size, etc, I can be no help. If anyone else has had their CLONE of an HS apart for valve adjustments, it's readily apparent as to whether a screw should be there or not.
THIS helpful thread is for the real Huasheng.... the CLONE of Huasheng is different. I'll try to post pix the next time I have it apart.

Adjusting valves on HuaSheng 142F

Hello, To get some background, here is my build: https://motoredbikes.com/threads/4-stroke-schwinn-stingray-chopper-occ.51001/ I've being riding my occ for few days and It does bug when I get to the high range RPMs (around 25-30mph), my first choice was trying to solve it with the "hidden"...

motoredbikes.com

 

[Wrench]

Here's a TIP from Oilite
To prevent possible seizures to shafts add Molybdenum Disulphide to the impregnation oil
Oilite also says to re impregnate the bushing every year or 1,000 hrs