Author Topic: Chain breaker and riveter for Primary chains  (Read 1504 times)

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Offline gschuld

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Chain breaker and riveter for Primary chains
« on: December 10, 2019, 09:28:06 AM »
I’m looking for a recommendation for a high quality set of tools to shorten endless JWiS (Audi/VW OEM) G68HPF-2 chain for primary chains.  I must be able to remove pins without damaging the pins or side plates, then reinstall.

I understand the really good ones are expensive. I’m OK with that.

Thanks,

George




Offline Jerry Rxman Griffin aka MuthaF'er

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Re: Chain breaker and riveter for Primary chains
« Reply #1 on: December 10, 2019, 11:14:24 AM »
Looking forward to having you provide another option for us
As of today 3/13/2012 my original owner 75 CB750F has made it through 3 wives, er EX-wives. Free at last.  ;-)

Offline turboguzzi

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Re: Chain breaker and riveter for Primary chains
« Reply #2 on: December 10, 2019, 12:34:36 PM »
In the usa i gues it's motion pro

but have to ask, are you intending to replace chains already installed in a motor? hope not

second, cant think how you can remove pins without grinding them first, they are slightly mushroomed, cant see how theyll pass through plates and smaller bushing by simply pushing on them


Offline gschuld

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Re: Chain breaker and riveter for Primary chains
« Reply #3 on: December 10, 2019, 02:34:51 PM »
TG,

Chain work would be out of the engine.

I’m told the chains can be safely shortened by pressing the pins and reinserting and closing down the edges again.  I could be wrong though

George

Offline kmb69

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Re: Chain breaker and riveter for Primary chains
« Reply #4 on: December 10, 2019, 03:56:13 PM »
I’m looking for a recommendation for a high quality set of tools to shorten endless JWiS (Audi/VW OEM) G68HPF-2 chain for primary chains.  I must be able to remove pins without damaging the pins or side plates, then reinstall.

I understand the really good ones are expensive. I’m OK with that.

Thanks,

George

Not answering your original question but.........
I don't recommend using the version of that chain with the oil holes in the non-rotating rollers.
You can buy the version like Ted was selling in longer lengths with the rotating rollers for much less than he was selling them for.
Of course they have to be shortened - same as the ones you have pictured.
Probably don't need anything special to break them, just use 2 pins at the correct pitch to press a link out.
Have you found rivetable master links for these?

Offline turboguzzi

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Re: Chain breaker and riveter for Primary chains
« Reply #5 on: December 11, 2019, 03:36:10 AM »
I’m looking for a recommendation for a high quality set of tools to shorten endless JWiS (Audi/VW OEM) G68HPF-2 chain for primary chains.  I must be able to remove pins without damaging the pins or side plates, then reinstall.

I understand the really good ones are expensive. I’m OK with that.

Thanks,

George

Not answering your original question but.........
I don't recommend using the version of that chain with the oil holes in the non-rotating rollers.
You can buy the version like Ted was selling in longer lengths with the rotating rollers for much less than he was selling them for.
Of course they have to be shortened - same as the ones you have pictured.
Probably don't need anything special to break them, just use 2 pins at the correct pitch to press a link out.
Have you found rivetable master links for these?
Was going to say something similar but as i am not a 750 guy, doubted if i should....who knows maybe those chains are simply the best
but after reading KMB69 post, got to say, chains that have "rolled from sheet" rollers like in your pic are not heavy duty in my book, and in a primary drive spinning to 10K, an accident waiting to happen
proper ones should have solid tube rollers IMHO

Offline MessnerMoto

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Re: Chain breaker and riveter for Primary chains
« Reply #6 on: December 11, 2019, 04:12:03 AM »
I think I explained like 20 times story about HD chains.

There is a dedicated long thread about it on the forum started by me.

I even provided all the links where and what to buy.

Use cheap riveting tool from aliexpress to break and rerivet the chain. Use same pins.....No need for special links.

IWIS version of chain is much better with solid rollers and without hols... all the links are in thread



Offline PeWe

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Re: Chain breaker and riveter for Primary chains
« Reply #7 on: December 11, 2019, 12:15:46 PM »
Read the MessnerMoto primary chain thread. Good reading!

My CB750 K2 stocker got BMW  timing chains with holes. These have correct lenghts, no need to shorten, but not as strong as the chains MessnerMoto  recommend ln need of shortening since they do not sell in 68 links.
Probably same as Classic Cycle City sells as a kit.

I posted photos of stock chains, CCC chains and the BMW 68 links timing chains that have holes as CycleX chains.
CB750 K6-76  970cc (Earlier 1005cc JMR Billet block on the shelf waiting for a comeback)
CB750 K2-75 Parts assembled to a stock K2

Updates of the CB750 K6 -1976
http://forums.sohc4.net/index.php/topic,180468.msg2092136.html#msg2092136
The billet block build thread
http://forums.sohc4.net/index.php/topic,49438.msg1863571.html#msg1863571
CB750 K2 -1975  build thread
http://forums.sohc4.net/index.php/topic,168243.msg1948381.html#msg1948381
K2 engine build thread. For a complete CB750 -75
http://forums.sohc4.net/index.php/topic,180088.msg2088008.html#msg2088008
Carb jetting, a long story Mikuni TMR32
http://forums.sohc4.net/index.php/topic,179479.msg2104967.html#msg2104967

Offline MessnerMoto

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Re: Chain breaker and riveter for Primary chains
« Reply #8 on: December 11, 2019, 12:53:04 PM »
one important thing about this HD chains is that they are not roller chains.... the increased strength in HD chain comes from increased diameter of pins... The skirt with oil hole is just that hardened  skirt it is not moving/rotating....

the chain without oil holes and solid skirt(without seam) has number   SWAG 30 93 9962.... but there should be no difference in strengths because both chains are made to industry standard G68HPF2... they are interchangeable in cars...

the confusion in brands and chain product numbers is because of merger of two companies but thats a different story

https://m.aliexpress.com/item/4000386803676.html?pid=808_0000_0101&spm=a2g0n.search-amp.list.4000386803676&aff_trace_key=f8109e41c4704df0ba69b45ffb74968f-1551371216033-05609-UneMJZVf&aff_platform=msite&m_page_id=6789amp-RuSl25m2zPTJonJDAYN0yg1576097543253


Offline PeWe

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Re: Chain breaker and riveter for Primary chains
« Reply #9 on: December 11, 2019, 09:20:16 PM »
That tool has a riveting function too, right?
CB750 K6-76  970cc (Earlier 1005cc JMR Billet block on the shelf waiting for a comeback)
CB750 K2-75 Parts assembled to a stock K2

Updates of the CB750 K6 -1976
http://forums.sohc4.net/index.php/topic,180468.msg2092136.html#msg2092136
The billet block build thread
http://forums.sohc4.net/index.php/topic,49438.msg1863571.html#msg1863571
CB750 K2 -1975  build thread
http://forums.sohc4.net/index.php/topic,168243.msg1948381.html#msg1948381
K2 engine build thread. For a complete CB750 -75
http://forums.sohc4.net/index.php/topic,180088.msg2088008.html#msg2088008
Carb jetting, a long story Mikuni TMR32
http://forums.sohc4.net/index.php/topic,179479.msg2104967.html#msg2104967