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larry8



Joined: 14 Oct 2006
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Location: Cleveland, Ohio USA

PostPosted: Tue Jan 02, 2007 12:56 pm    Post subject: Reply with quote

Good ideas.
But you can't weld a magnet - they are made of metals that aren't weldable.



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jthspace



Joined: 14 Dec 2006
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Location: Duxford Airport, Cambs.

PostPosted: Tue Jan 02, 2007 4:23 pm    Post subject: Magnetic Oil Plug Reply with quote

These fit the Honda Monkey bikes - similar engines to the Chinese versions, so may fit. Don't know what one looks like (yet), so compare the picture on this site. For less than 10, may be worth investing in one . . .

http://www.monkeybike.co.uk/acatalog/Daytona_Magnetic_Sump_Plug.html

Jeff


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enu06



Joined: 09 Oct 2006
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Location: Resident of historic Bath, somerset!

PostPosted: Tue Jan 02, 2007 4:40 pm    Post subject: Reply with quote

Put your money back in your wallet, it wont fit, or at least not any drain plug hole on a Sukida, which is just the same as 99.9% of these bikes.
I'm not having a pop at you, but I cant see any point in putting one in-line, when you look at Hodgy boy's & Sunburns environment, hot & dusty,, they have no problems at all.
Go along with Jialins idea and araldite a magnet in the plug, you can get the plug from scooter sites, so you can play with the idea before you bugger up your own plug. Dont forget the spring will help hold it in place.
Your idea is far to over the top for whats needed, if its needed at all!


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enu06



Joined: 09 Oct 2006
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Location: Resident of historic Bath, somerset!

PostPosted: Tue Jan 02, 2007 4:45 pm    Post subject: Reply with quote

Just to let you know, the strongest magnet to suit I have found comes out of an old hard disc drive, immensley powerfull, thin and easily fileable to fit the plug.
Gettting hold of an old drive is easy enough, and when you take it aprt for an added bonus you get 2 free round mirrors for the budgies cage too!


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jthspace



Joined: 14 Dec 2006
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Location: Duxford Airport, Cambs.

PostPosted: Tue Jan 02, 2007 5:10 pm    Post subject: Reply with quote

enu06 wrote:
Put your money back in your wallet, it wont fit, or at least not any drain plug hole on a Sukida, which is just the same as 99.9% of these bikes.
I'm not having a pop at you, but I cant see any point in putting one in-line, when you look at Hodgy boy's & Sunburns environment, hot & dusty,, they have no problems at all.
Go along with Jialins idea and araldite a magnet in the plug, you can get the plug from scooter sites, so you can play with the idea before you bugger up your own plug. Dont forget the spring will help hold it in place.
Your idea is far to over the top for whats needed, if its needed at all!


I am not sure this was directed at me - I was mentioning a replacement plug not an in-line fitting. No offence taken, anyway - and thanks for the magnet source idea, I have a few dead HD's laying about! Jeff


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BPO



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PostPosted: Tue Jan 02, 2007 7:31 pm    Post subject: Reply with quote

As long as you make sure the magnet cant come loose then its fine... but to be honest its not needed Wink

If swarf was gonna be an issue they would fit a oil filter Laughing Laughing Laughing Not just the strainer most of them have...



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DS-Racing



Joined: 20 Oct 2006
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Location: Auckland, NZ

PostPosted: Tue Jan 02, 2007 8:40 pm    Post subject: Reply with quote

Found it.

http://www.partsforscooters.com/169-11

Its for the 125/150cc GY6 Engine, but will fit the 50cc as the bottom end of the engine is the same and the sump/drain plug is the same. fits my mates Sukuda, mines some other weird brand. only reason I'm using it cause I have an 85cc cylinder and race head (51mm bore), and I wanted some extra cooling instead of just a slightly better fan as I race it.

sorry and when I ment weild I ment "JB weild" its a 2 pack liquid metal glue, apparetly as strong as a weild.


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BPO



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PostPosted: Tue Jan 02, 2007 9:45 pm    Post subject: Reply with quote

What about the oil pressure drop??

And the fact theres no thermostat so the oil temperature will take ages to warm up?? Meaning long engine warm up times?? The extra oil capacity isnt a bad thing though... means oil will stay cooler for longer.

Also oil cooling wont offer much cooling effect to the main part of the engine that needs it... the piston and barrel... the oil isnt used to cool the barrel on these bikes so having cooler oil wont make much odds, the barrel will still be thinner from the over bore and creating more heat... the cooler oil will be helping crank and cam temperatures but they dont really suffer from heat issues only oil quality.

On the little 50 engine even with a big bore kit, I would concentrate more on getting a good air flow over it... especially if racing it.



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BPO



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PostPosted: Tue Jan 02, 2007 9:48 pm    Post subject: Reply with quote

But it seems like quite a nicely made piece of kit... but I suspect its aimed more for the GY6 engine as its used a lot in quads and buggys where airflow is lower, and engine load is much higher. Wink



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DS-Racing



Joined: 20 Oct 2006
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Location: Auckland, NZ

PostPosted: Wed Jan 03, 2007 12:45 am    Post subject: Reply with quote

Ah, but the QMB139 engine in our scooters is infact a GY6 variant, the bottom end is exacltly the same with the same crank, conrod, and flywheel/alternator/fan etc you can even fit a 150cc racing CDi to your 50cc as the ignition timing is exactly the same, usually the gear box is a little longer on the 125/150cc,s to accomidate for a larger wheel. My friend has even fitted a 150cc head with water cooling to his 50cc crank case however he had to modify the frame of his sukuda to allow enough room for the engine and all the water cooling.

He is actually working on a fuel injection system for it right now, based on the PGM-F1 used in the CBR600 motorcycles and the Bar honda formula 1 race car, apparently honda has allready made a 50cc prototype scooter using this system, its got a map all they way to 18500rpm, but I dont think our scooters will get that high, but knowing him he might find someway to fit pnumatic valves.


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sunburnspain



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PostPosted: Thu Jan 04, 2007 1:48 pm    Post subject: Reply with quote

I have changed my own oil for the first time(it's been changed before, but my the mechanic at the service).
I checked on what should be done at this service and it says 'change the oil filter'.
Is the oil filter that sort of tea strainer thing that sits in the spring on the drain nut Question
If it is, I've not bothered to change it because I can't see any problems with it.
I've looked for anything that looks like an oil filter, but nothing looks like the one on my 4x4, which is about the size of a small bucket Razz

Quite proud of myself really Rolling Eyes Wink



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larry8



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PostPosted: Thu Jan 04, 2007 1:53 pm    Post subject: Reply with quote

Good job sunburn, and yes the oil filter is that tea screen. Next you'll be putting on a stroker crank.



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sunburnspain



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PostPosted: Thu Jan 04, 2007 2:04 pm    Post subject: Reply with quote

larry8 wrote:
.......... a stroker crank.


Thanx Larry, are you sure that's not a typo :D :D :D Shocked



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Simar



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Location: Fife, Scotland

PostPosted: Sun Jan 28, 2007 10:13 pm    Post subject: Reply with quote

Engine oil change







After I assembled the scooter I drained the factory oil. This is a very simple process so no one has an excuse not to do it. Why take a chance with poor oil, who knows what they use in China!. The drain plug is very accessible.





The plug has a spring above it that holds a screen in place.




Do not forget to place the screen back in the opening. Small 4 stroke engines do not have oil filters, so you need this screen! That's why it is important to change oil frequently. It's a simple and fast job.





When you re-assemble, place the screen in the spring that came out with the plug. You will need to compress the spring with the plug as you screw it back on. Use caution not to cross thread the plug.







Info obtained from abucas-es


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larry8



Joined: 14 Oct 2006
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Location: Cleveland, Ohio USA

PostPosted: Sun Jan 28, 2007 10:40 pm    Post subject: Reply with quote

sunburnspain wrote:
larry8 wrote:
.......... a stroker crank.


Thanx Larry, are you sure that's not a typo :D :D :D Shocked


No they make stroker cranks for the 125-150 GY6 engine and I've seen or read of one for the 50cc too somewhere. On the 125 it adds 2mm to the stroke.



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'67 BMW R69S-"Toots" in rehab
'09 SC250
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'06 X9-500
'08 MP3-400
'06 BV500
'09 Mana
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