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       #Post#: 7997--------------------------------------------------
       420 chain - ok with 200cc?
   DIR By: Tinworm
       Date: January 1, 2023, 4:27 pm
       ---------------------------------------------------------
       Gemini supplied me with a 420 / 60T plate wheel and carrier, and
       I have recently been studying the link Stefan provided, which
       explains chain pitch etc.
       But now I am a bit concerned because I have been looking at 420
       chain on ebay and it never specifies it for anything bigger than
       a 160cc engine.
       It makes me wonder if it is designed only for smaller engines
       and wonder whether our 200cc's will be too much for it?
       #Post#: 7998--------------------------------------------------
       Re: 420 chain - ok with 200cc?
   DIR By: Tinworm
       Date: January 1, 2023, 4:36 pm
       ---------------------------------------------------------
       also, what do designations H, D and B mean after the 420; does
       anyone know?
       #Post#: 7999--------------------------------------------------
       Re: 420 chain - ok with 200cc?
   DIR By: jim
       Date: January 2, 2023, 12:08 am
       ---------------------------------------------------------
       I use 08B chain on my CK because it will easily take the mighty
       10hp, half links are available and I can get it for nothing from
       work. It is very cheap to buy from transmission/bearing
       suppliers. I use Transpower Drives in Wellrough as they are
       local to Ruffden. I realise Transpower Drives sounds like it
       should be a drag artist taxi company like in the TV program "A
       League of Gentlemen", but it isn't.
       #Post#: 8000--------------------------------------------------
       Re: 420 chain - ok with 200cc?
   DIR By: Moogie38
       Date: January 2, 2023, 1:00 am
       ---------------------------------------------------------
       A lot of the guys in the US use #35 chain which is 3/8 pitch and
       has a tensile strength of 2100 lbs and don't seem to have any
       problems.
       420 chain is 1/2 pitch and has a tensile strength of 3970 lbs. I
       wouldn't be too worried about it.
       #Post#: 8001--------------------------------------------------
       Re: 420 chain - ok with 200cc?
   DIR By: StefanN
       Date: January 2, 2023, 3:36 am
       ---------------------------------------------------------
       420 chain will be fine Peter and will be the easiest route to a
       standard setup.
       #Post#: 8002--------------------------------------------------
       Re: 420 chain - ok with 200cc?
   DIR By: Tinworm
       Date: January 2, 2023, 5:16 am
       ---------------------------------------------------------
       --- Quote from: jim link ---
       >
       > I realise Transpower Drives sounds like it should be a drag
       artist taxi company
       >
       --- End Quote ---
       absolutely hilarious and very much you!
       #Post#: 8003--------------------------------------------------
       Re: 420 chain - ok with 200cc?
   DIR By: Tinworm
       Date: January 2, 2023, 5:17 am
       ---------------------------------------------------------
       --- Quote from: Moogie38 (Noel) link ---
       >
       >
       > 420 chain is 1/2 pitch and has a tensile strength of 3970 lbs.
       I wouldn't be too worried about it.
       >
       --- End Quote ---
       Blimey! Cheers
       any idea what the H, B and D after the 420 mean, and which I
       need?
       #Post#: 8004--------------------------------------------------
       Re: 420 chain - ok with 200cc?
   DIR By: Tinworm
       Date: January 2, 2023, 5:19 am
       ---------------------------------------------------------
       --- Quote from: StefanN link ---
       >
       > 420 chain will be fine Peter and will be the easiest route to
       a standard setup.
       >
       --- End Quote ---
       Thanks very much Stefan
       same question, you will know this, what do H, B and D mean, when
       written after the 420. Coincidentally, I have a length of 420H
       from another project
       #Post#: 8005--------------------------------------------------
       Re: 420 chain - ok with 200cc?
   DIR By: Moogie38
       Date: January 2, 2023, 6:48 am
       ---------------------------------------------------------
       --- Quote from: Tinworm link ---
       >
       > [quote author=StefanN link=topic=1031.msg8001#msg8001
       date=1672652203]
       > 420 chain will be fine Peter and will be the easiest route to
       a standard setup.
       >
       --- End Quote ---
       Thanks very much Stefan
       same question, you will know this, what do H, B and D mean, when
       written after the 420. Coincidentally, I have a length of 420H
       from another project
       [/quote]
       H = Heavy duty
       Not sure about the other two.
       D = Duplex?
       #Post#: 8006--------------------------------------------------
       Re: 420 chain - ok with 200cc?
   DIR By: Tinworm
       Date: January 2, 2023, 12:01 pm
       ---------------------------------------------------------
       --- Quote from: Moogie38 (Noel) link ---
       >
       >
       >
       > H = Heavy duty
       > Not sure about the other two.
       > D = Duplex?
       >
       --- End Quote ---
       Thanks Noel. Heavy was my guess too. I wonder what Duplex would
       mean.
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