Author Topic: 420 chain - ok with 200cc?  (Read 149 times)

Tinworm

  • Forum user
  • Posts: 348
  • Location: Suffolk

Badges: (View All)
420 chain - ok with 200cc?
« on: 01 Jan 23, 10:27 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?

I don't want to bore you all with the details, here. But if you are interested, have a look at my blog https://peteskart.blogspot.com/

-Peter

Share on Facebook Share on Twitter


Tinworm

  • Forum user
  • Posts: 348
  • Location: Suffolk

Badges: (View All)
Re: 420 chain - ok with 200cc?
« Reply #1 on: 01 Jan 23, 10:36 pm »
also, what do designations H, D and B mean after the 420; does anyone know?
I don't want to bore you all with the details, here. But if you are interested, have a look at my blog https://peteskart.blogspot.com/

-Peter

jim

  • Forum user
  • Posts: 631
  • Location: northants

Badges: (View All)
CKGB Member
Re: 420 chain - ok with 200cc?
« Reply #2 on: 02 Jan 23, 06:08 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.
If you can drive round corners, you're not going fast enough.

Moogie38 (Noel)

  • Forum user
  • Posts: 275
  • Location: Northern Ireland

Badges: (View All)
CKGB Member
Re: 420 chain - ok with 200cc?
« Reply #3 on: 02 Jan 23, 07:00 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.
Facebook: Cyclekarts Ireland.

StefanN

  • Administrator
  • *****
  • Posts: 1052
  • Location: Bagshot, Surrey, United Kingdom
  • CKGB Committee: Yes

Badges: (View All)
CKGB Committee CKGB Member
Re: 420 chain - ok with 200cc?
« Reply #4 on: 02 Jan 23, 09:36 am »
420 chain will be fine Peter and will be the easiest route to a standard setup.

Tinworm

  • Forum user
  • Posts: 348
  • Location: Suffolk

Badges: (View All)
Re: 420 chain - ok with 200cc?
« Reply #5 on: 02 Jan 23, 11:16 am »
I realise Transpower Drives sounds like it should be a drag artist taxi company

absolutely hilarious and very much you!
I don't want to bore you all with the details, here. But if you are interested, have a look at my blog https://peteskart.blogspot.com/

-Peter

Tinworm

  • Forum user
  • Posts: 348
  • Location: Suffolk

Badges: (View All)
Re: 420 chain - ok with 200cc?
« Reply #6 on: 02 Jan 23, 11:17 am »

420 chain is 1/2 pitch and has a tensile strength of 3970 lbs. I wouldn't be too worried about it.

Blimey! Cheers

any idea what the H, B and D after the 420 mean, and which I need?
I don't want to bore you all with the details, here. But if you are interested, have a look at my blog https://peteskart.blogspot.com/

-Peter

Tinworm

  • Forum user
  • Posts: 348
  • Location: Suffolk

Badges: (View All)
Re: 420 chain - ok with 200cc?
« Reply #7 on: 02 Jan 23, 11:19 am »
420 chain will be fine Peter and will be the easiest route to a standard setup.

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
I don't want to bore you all with the details, here. But if you are interested, have a look at my blog https://peteskart.blogspot.com/

-Peter

Moogie38 (Noel)

  • Forum user
  • Posts: 275
  • Location: Northern Ireland

Badges: (View All)
CKGB Member
Re: 420 chain - ok with 200cc?
« Reply #8 on: 02 Jan 23, 12:48 pm »
420 chain will be fine Peter and will be the easiest route to a standard setup.

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

 H = Heavy duty
Not sure about the other two.
D = Duplex?
Facebook: Cyclekarts Ireland.

Tinworm

  • Forum user
  • Posts: 348
  • Location: Suffolk

Badges: (View All)
Re: 420 chain - ok with 200cc?
« Reply #9 on: 02 Jan 23, 06:01 pm »


 H = Heavy duty
Not sure about the other two.
D = Duplex?

Thanks Noel. Heavy was my guess too. I wonder what Duplex would mean.
I don't want to bore you all with the details, here. But if you are interested, have a look at my blog https://peteskart.blogspot.com/

-Peter

Moogie38 (Noel)

  • Forum user
  • Posts: 275
  • Location: Northern Ireland

Badges: (View All)
CKGB Member
Re: 420 chain - ok with 200cc?
« Reply #10 on: 02 Jan 23, 07:29 pm »
Duplex chain is double chain. Car engines that use timing chains are normally duplex.

Facebook: Cyclekarts Ireland.

Tinworm

  • Forum user
  • Posts: 348
  • Location: Suffolk

Badges: (View All)
Re: 420 chain - ok with 200cc?
« Reply #11 on: 02 Jan 23, 07:45 pm »
Duplex chain is double chain. Car engines that use timing chains are normally duplex.

Blimey, I had no idea.
So, what letter of chain does everyone use?

H for Heavy Duty?
I don't want to bore you all with the details, here. But if you are interested, have a look at my blog https://peteskart.blogspot.com/

-Peter