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520 sprocket for h2

Posted: Wed Jan 06, 2010 9:15 am
by Keith500
hi, guys anyone know of where you can get a 520 front sprocket for a h2 standard or one less tooth
cheers :D
oh and happy new year everyone :D

Posted: Wed Jan 06, 2010 9:59 am
by husson73
can in my country 520 for 520 O ring 8)

Posted: Wed Jan 06, 2010 12:37 pm
by Keith500
who by :?: :D

Posted: Wed Jan 06, 2010 12:39 pm
by husson73
will ask to my mechanic man if you want, perhaps AFAM.

Posted: Wed Jan 06, 2010 3:20 pm
by scouse
B&C express sprockets will make any sprocket any size machined from alloy

http://www.bandcexpress.co.uk/

Gary T

m

Posted: Wed Jan 06, 2010 4:05 pm
by downpipe3
sprockets unlimited in the uk

Posted: Wed Jan 06, 2010 7:02 pm
by Wolfie

Posted: Wed Jan 06, 2010 7:28 pm
by the180kid
Wolfie wrote:520 is a bit puny for a H2 innit?

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was a era Denco upgrade kit a 520 conversion' with one tooth less on the back,
whats the approx cost Gray to have a couple of sprockets made up?,
8)

Posted: Wed Jan 06, 2010 7:31 pm
by kas750
its a great way for some cheap power BUT they wont last long even with regular maintenance...I fitted bsa bantam chain/sprockets to a velocette i raced and got 2hp...All pukka race bikes have the absolute minimum pitch chain sprockets....
Image

Posted: Wed Jan 06, 2010 8:37 pm
by Wolfie
I had three done last time, 2 rear and one front, all in steel cost £75.

Alloy is cheaper, I think about a tenner less for a rear one. (mind you this was about 18 months ago).

Posted: Wed Jan 06, 2010 8:46 pm
by the180kid
eeeeh, cheers Gray,.

Denco called it a 'no loss' set,

of what i'm wondering?,.until i read this and memorised the calculation,... :lol:

http://en.wikipedia.org/wiki/Gear_ratio

Posted: Wed Jan 06, 2010 8:47 pm
by Keith500
yep 520 is a bit punni for this beast a tuned harry barlow h2 motor in a moded lc frame spoked wheels ect it is a mate of mine who is building it :D cant wait for a thrash :D

Posted: Wed Jan 06, 2010 9:13 pm
by the180kid
Keith
dont think i'd put a smaller front on with only a 520,..on a tuned motor,

i have a 49t rear on mine instead of stock 47, hence the £100 xring as non standard links, :shock: :lol:

Posted: Thu Jan 07, 2010 7:33 am
by Wolfie
Opened a H2b up yesterday which had a 12t on the front!!

Makes the chain almost go round a right angle.

Posted: Thu Jan 07, 2010 8:52 am
by Olde Coney
Keith500 wrote:yep 520 is a bit punni for this beast a tuned harry barlow h2 motor in a moded lc frame spoked wheels ect it is a mate of mine who is building it :D cant wait for a thrash :D
I was beginning to wonder why you would have an H2 Keith...now I understand........................












YOU HAVEN'T GOT ONE :lol: :lol:

Posted: Thu Jan 07, 2010 8:54 am
by husson73
Wolfie wrote:520 is a bit puny for a H2 innit?

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not at all, I'm 520 o ring on my H2A no troubles and done for exemple 1000 kilometers a day at 7000 7500 on the german highways: perfect.
And anyway 530 o ring doesn't work: touch the clutch actuator 8)

Posted: Thu Jan 07, 2010 9:18 am
by Wolfie
Mine doesn't JP, even with a 16 tooth front.

It's close but a miss is as good as a mile.
:smt023

Posted: Thu Jan 07, 2010 9:23 am
by husson73
Wolfie wrote:Mine doesn't JP, even with a 16 tooth front.

It's close but a miss is as good as a mile.
:smt023
I'm also 16 front, have even try 15 with not o ring chain, still touched and same on my H2B, but my 69 H1 is 530 O ring: no trouble :!:

Posted: Thu Jan 07, 2010 9:36 am
by Wolfie
it's an O ring chain.... I forgot that bit. :oops:

Posted: Thu Jan 07, 2010 7:41 pm
by Triple Parts
Keith500 wrote:yep 520 is a bit punni for this beast a.....
Is it putting out more than a GP bike Keith? :lol:

If you google "the truth about chains" there is a lot of rubbish talked about chains, mainly by suppliers. Look at the tensile strengths and why GP bikes use 520 chains.

Strength is not an issue, but as Ade says, it will just wear a bit quicker, so if you can live with that its not a problem. Also, if you are looking for every small gain, a non o-ring chain will save a bit of friction/transmission loss. But again, more maintenance and wear (dirt gets inside the rollers and forms a nice grinding paste).

m

Posted: Thu Jan 07, 2010 7:45 pm
by downpipe3
all i need to say is
520 chain is good enough for moto gp bikes ,and some of my dragbikes have had it on

its all down to the qaulity of the chain


nuff said :wink:

Posted: Thu Jan 07, 2010 10:46 pm
by Wolfie
Fairy nuff.