Sprag Clutch MK3 (2012)

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Norton Dave

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Jul 9, 2011
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Check out for sale add , sorry about time taken to put these up for sale Norton Dave . To all that have made enquiries please email me for postage .
 
Norton Dave !!!!

You started a test of these sprag`s.
Have not seen any results yet.
The results of these laboratory tests must be more important than price

Vidar
 
vidar hjelm johansen said:
The results of these laboratory tests must be more important than price
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I believe they are the same make and type as the standard replacement sprag units [Stieber DC 4127 (3C)] therefore they shouldn't actually require any exhaustive testing.
 
Hi Vidar ,
I allways like to test things before offering for sale they are the Stieber DC4127 units what is special is they work and are reasonably priced , I was testing the opperation hardness and how after emery clothing the inner drive sproket and drive gear would they still drive and they did time will tell it has been about a year now so after these tests Iam confident to sell , hope this clears up any issues Norto Dave .
 
Hi

I have got my frame back from the powdercoating shop and the barrel and head back from the engine shop
It all looks great and I will be posting photos of the bits when I get them all laid out

Norton Dave sent me one of his sprag bearings which arrived today
Anybody wanting to save a few bucks on one of these then i can recommend him at his word
A genuine 18 tooth Stieber for $50.00! Unreal, thanks Dave

Bye for now

Jed
 
Hi,I have also just received today my sprag clutch from Norton Dave.Thanks Dave.
Might be a little while before I get to try it out,but I have to fit the starter back on as I have had knee surgery on both knees, so no more kick starting!
Not good news from the surgeon on my Right knee.
Brett
 
Jed said:
Hi

I have got my frame back from the powdercoating shop and the barrel and head back from the engine shop
It all looks great and I will be posting photos of the bits when I get them all laid out

Norton Dave sent me one of his sprag bearings which arrived today
Anybody wanting to save a few bucks on one of these then i can recommend him at his word
A genuine 18 tooth Stieber for $50.00! Unreal, thanks Dave

Bye for now

Jed
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Norton Dave said:
Hi Vidar ,
I allways like to test things before offering for sale they are the Stieber DC4127 units what is special is they work and are reasonably priced , I was testing the opperation hardness and how after emery clothing the inner drive sproket and drive gear would they still drive and they did time will tell it has been about a year now so after these tests Iam confident to sell , hope this clears up any issues Norto Dave .
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Hi Norton dave can I purchase one of your sprags please
 
This might be of interest.
I'm now into year 5, still works like it should.
So far I have not heard of any failures of these cheapie sprags.
There are lots of failures of the proper expensive ones.
Glen

DC 4127 sprag from AliExpress (2019)

I hope everyone who ordered has received one. My 2 showed up last week. They appear to be the same as the last one. That sprag has done 150 or so starts now, no issues. The minute I hear any slippage is when the old will come out and a new $17 unit will go in. The $180 Norvil unit lasted about a...
www.accessnorton.com www.accessnorton.com
 
If the gears are correctly spaced in your gearbox, you should not need a sprag clutch. The sprag only works if you don't match the revs on down-changes. The standard Commando gearbox leaves a lot to be desired. For road work, it might be enough. But for racing, it is useless. As you come down through the gears, it takes a big heap of revs to get a smooth down-chane. It means you are never smooth enough to be safe. A sprag clutch might fix it, but it would be a bodge job. When the internal gear ratios are right, you will always be faster.
 
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acotrel said:
If the gears are correctly spaced in your gearbox, you should not need a sprag clutch. The sprag only works if you don't match the revs on down-changes.
Click to expand...

This "sprag clutch" is part of the electric starter mechanism.
andover-norton.co.uk

Motorcycle parts and spares for Norton motorbikes - Genuine Andover Norton Spare Parts - Andover Norton Motorcycles Parts - Original Andover Norton Parts

Motorcycle parts and spares for Andover Norton motorbikes: Andover Norton manufactures and supplies all Genuine Factory Spare Parts for Norton motorcycles built before 2002.
andover-norton.co.uk
 
Norton Dave said:
Check out for sale add , sorry about time taken to put these up for sale Norton Dave . To all that have made enquiries please email me for postage .
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Hi Dave can you let me no where I can get the sprag clutch you have talking about please cheers Kelvin
 
Hoon said:
Hi Dave can you let me no where I can get the sprag clutch you have talking about please cheers Kelvin
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Norton Dave last logged on to the site 3rd Dec, best you start a conversation so he gets an email there is a message for him or you will be waiting a long time.
 
acotrel said:
If the gears are correctly spaced in your gearbox, you should not need a sprag clutch. The sprag only works if you don't match the revs on down-changes. The standard Commando gearbox leaves a lot to be desired. For road work, it might be enough. But for racing, it is useless. As you come down through the gears, it takes a big heap of revs to get a smooth down-chane. It means you are never smooth enough to be safe. A sprag clutch might fix it, but it would be a bodge job. When the internal gear ratios are right, you will always be faster.
Click to expand...
Is he suffering from brain fade again?
What a starter motor sprag clutch has to do with any of the above comments . . . . . . .
 
Hortons Norton said:
Slipper clutch? Maybe eye sight?
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Sprag Clutch MK3 (2012)
 
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