Primary Chains for diesels
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- Stuart
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Primary Chains for diesels
Had a chat with 'The Chain Man' at a UK motorcycle show recently & got some good advice regarding the Enfield's Primary setup.
He said he had recently helped out a guy who had made a powerful V twin Enfield by supplying a better chain. His now much more torquey engine was eating through primary chains like nobody's business but the problem was solved after fitting a duplex Deutz chain.
He showed me the larger pins and centre links on an example he had & went on to say they will quite possibly outlast the engine. They are also able to be routed through much tighter curves that you would expect on the return route but can only be ordered with an even amount of links of course. Enfield chains are 06B2 (or 3/8).
Check him out:
http://www.the-chain-man.co.uk
I asked him about increasing my primary sprocket size and he went on to tell me that any bearing supplier could supplier a 'platewheel', press fit & weld them over an existing cog after first machining the teeth from it. It's a common request as you might expect.
So I'm going to source at 06B2-35 duplex Platewheel.
My Enfield has the original engine sprocket 29T & clutch 56T. Ok if you've got the RPM supplied by a petrol engine but not by a diesel! Anyway, anything from about 34T or 35T primary will get me the cruising speed I require, 35 giving a longer pull away in first which some may not fancy. This through a four speed box of course.
In addition, Hitchcocks have advised me they supply a five plate upgrade for the clutch I have saying most run them with the standard 3 soft & 3 harder springs. ATF is the fluid they recommend for the primary chain case as it is very thin. If anything thicker has been used then existing clutch plates should be cleaned with a good degreaser.
He said he had recently helped out a guy who had made a powerful V twin Enfield by supplying a better chain. His now much more torquey engine was eating through primary chains like nobody's business but the problem was solved after fitting a duplex Deutz chain.
He showed me the larger pins and centre links on an example he had & went on to say they will quite possibly outlast the engine. They are also able to be routed through much tighter curves that you would expect on the return route but can only be ordered with an even amount of links of course. Enfield chains are 06B2 (or 3/8).
Check him out:
http://www.the-chain-man.co.uk
I asked him about increasing my primary sprocket size and he went on to tell me that any bearing supplier could supplier a 'platewheel', press fit & weld them over an existing cog after first machining the teeth from it. It's a common request as you might expect.
So I'm going to source at 06B2-35 duplex Platewheel.
My Enfield has the original engine sprocket 29T & clutch 56T. Ok if you've got the RPM supplied by a petrol engine but not by a diesel! Anyway, anything from about 34T or 35T primary will get me the cruising speed I require, 35 giving a longer pull away in first which some may not fancy. This through a four speed box of course.
In addition, Hitchcocks have advised me they supply a five plate upgrade for the clutch I have saying most run them with the standard 3 soft & 3 harder springs. ATF is the fluid they recommend for the primary chain case as it is very thin. If anything thicker has been used then existing clutch plates should be cleaned with a good degreaser.
Stuart. M1030M1, Honda NC700S, Grom!, Toyota Corolla 1.4 Turbo Diesel. Favouring MPG over MPH.
- boutje
- I luv the smell of Diesel...
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Re: Primary Chains for diesels
Why press fit and welding?
When you find the right machineshop the can make it solid like the original one.
When you find the right machineshop the can make it solid like the original one.
- Stuart
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Re: Primary Chains for diesels
It's the cheapest, easiest route. Have you costed internal broaching?
Stuart. M1030M1, Honda NC700S, Grom!, Toyota Corolla 1.4 Turbo Diesel. Favouring MPG over MPH.
- boutje
- I luv the smell of Diesel...
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Re: Primary Chains for diesels
I think making a pressfit and welding cost more time than making it of solid.
The problem with welding and a press fit is that the sprocket can be wobbling.(that is my experience)
The problem with welding and a press fit is that the sprocket can be wobbling.(that is my experience)
- Stuart
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Re: Primary Chains for diesels
That can occur if it's not welded correctly - uniformly on both sides.
I got two quotes for the 06B2-35 cog today:
Brammer: £226.
Cross-Morse: £18 delivered.
http://www.cross-morse.co.uk/pdf/Stock% ... ketsEN.pdf
I got two quotes for the 06B2-35 cog today:
Brammer: £226.
Cross-Morse: £18 delivered.
http://www.cross-morse.co.uk/pdf/Stock% ... ketsEN.pdf
Stuart. M1030M1, Honda NC700S, Grom!, Toyota Corolla 1.4 Turbo Diesel. Favouring MPG over MPH.
- boutje
- I luv the smell of Diesel...
- Posts: 69
- Joined: Fri May 06, 2011 1:57 pm
- Location: The netherlands spaarnwoude
- Contact:
Re: Primary Chains for diesels
Ok.
A tip:
Pre heat the sprocket and hub before welding.
And let it cool down slowly.
I make offset sprockets for motorcycles.(6 - 10 pieces a week)
In the past i welded the sprockets on a hub.
1 on the 5 sprockets was wobbling.
Now i make them out of solid and shape the internal splines.
A tip:
Pre heat the sprocket and hub before welding.
And let it cool down slowly.
I make offset sprockets for motorcycles.(6 - 10 pieces a week)
In the past i welded the sprockets on a hub.
1 on the 5 sprockets was wobbling.
Now i make them out of solid and shape the internal splines.
- Stuart
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Primary Chains for diesels
Why didn't you say that to start with!
If this doesn't work then you will have another customer in me lol.
If this doesn't work then you will have another customer in me lol.
Stuart. M1030M1, Honda NC700S, Grom!, Toyota Corolla 1.4 Turbo Diesel. Favouring MPG over MPH.
- boutje
- I luv the smell of Diesel...
- Posts: 69
- Joined: Fri May 06, 2011 1:57 pm
- Location: The netherlands spaarnwoude
- Contact:
Re: Primary Chains for diesels
I don`t like to spam my work here on the forum.
- Stuart
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Re: Primary Chains for diesels
It will be a few weeks before I have both parts and then I must find someone to fit them. If I need your services it won't be just yet.
Perhaps we should have a separate forum room for members to post their websites & help others out? We all have the same interests at heart.
Perhaps we should have a separate forum room for members to post their websites & help others out? We all have the same interests at heart.
Stuart. M1030M1, Honda NC700S, Grom!, Toyota Corolla 1.4 Turbo Diesel. Favouring MPG over MPH.
- Stuart
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Re: Primary Chains for diesels
Got our 35T sprocket back. Looks like they've pulled it off, just.
Luckily the new length primary chain won't need a half link like the old one. They don't do them for Duetz diesel chains. Waiting on the new chain now.
Luckily the new length primary chain won't need a half link like the old one. They don't do them for Duetz diesel chains. Waiting on the new chain now.
Stuart. M1030M1, Honda NC700S, Grom!, Toyota Corolla 1.4 Turbo Diesel. Favouring MPG over MPH.
- Stuart
- Site Admin
- Posts: 2221
- Joined: Fri Dec 01, 2006 9:08 pm
- Location: Horsham West Sussex, England
- Contact:
Re: Primary Chains for diesels
Chain arrived with specified 102 pins. It fitted fine, the sacrificial slipper taking up the small amount of slack. Chain make is JWIS from Germany. Everything was fitted inc 5 plate clutch upgrade (excellent) and 430ml of ATF added to chain case.
Bike is currently running well on the new setup
Bike is currently running well on the new setup
Stuart. M1030M1, Honda NC700S, Grom!, Toyota Corolla 1.4 Turbo Diesel. Favouring MPG over MPH.