Pass me that oily sprag please
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- KitchenSync
- Clubman Racer
- Posts: 229
- Joined: Thu Apr 19, 2012 7:38 pm
- Location: Leicestershire UK
Pass me that oily sprag please
Well the sprag is out and looks typically done for as expected. Evidence of previous work (as confirmed by the awesome Bigun)
The inner surface of ring is bumpy, the lobes of the sprag are perfect, the spring (as you see) is "tense".
I'm at the point of making a decision: shorten the spring and hope it'll go for a few months until I've got the money to replace (the engine probably as it's carrying a few battle-scars from it's 41,000 mile life) - or should I borrow some cash, renew it anyway, and carry on putting oil in for a few more years.
This is my primary vehicle now the DVLA kindly offered to remove my car (yup - an own goal admittedly)
Any advice - I probably know the answer.
https://www.icloud.com/photostream/#A2JtdOXmGaWDMF
The inner surface of ring is bumpy, the lobes of the sprag are perfect, the spring (as you see) is "tense".
I'm at the point of making a decision: shorten the spring and hope it'll go for a few months until I've got the money to replace (the engine probably as it's carrying a few battle-scars from it's 41,000 mile life) - or should I borrow some cash, renew it anyway, and carry on putting oil in for a few more years.
This is my primary vehicle now the DVLA kindly offered to remove my car (yup - an own goal admittedly)
Any advice - I probably know the answer.
https://www.icloud.com/photostream/#A2JtdOXmGaWDMF
- falcomunky
- SuperBike Racer
- Posts: 820
- Joined: Wed Jan 03, 2007 8:29 pm
- Location: NEUK
Looks a lot like mine did when I pulled it out last year. I got the Ducati part (identical but cheaper) via Ebay but I understand one of the KTM range is also the same?
I'm not 100% sure which model though...
I'd personally go with getting a new sprag (£50 or so), especially as you've already done the hard part in getting the oldun out!
I'm not 100% sure which model though...
I'd personally go with getting a new sprag (£50 or so), especially as you've already done the hard part in getting the oldun out!
Two is the magic number... ;)
- Aladinsaneuk
- Aprilia Admin
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- blinkey501
- World Champion
- Posts: 3495
- Joined: Sun May 29, 2011 6:28 pm
- Location: near doncaster
Griff sells origional sprag clutches 85 quid delivered. I personally did'nt want to mess about fitting a new sprag in backwards.
Obviously this is down to choice.
And i definatly would not mess about with an old sprag clutch has you may cause more damage in the long run.
Obviously this is down to choice.
And i definatly would not mess about with an old sprag clutch has you may cause more damage in the long run.

Tolerance will be our undoing.
- KitchenSync
- Clubman Racer
- Posts: 229
- Joined: Thu Apr 19, 2012 7:38 pm
- Location: Leicestershire UK
Well - I did it anyway!
Heh - I cut 20mm out of the spring - cleaned it all up - and it worked!
With only a few hunnered quid to keep a roof over my head replacement was something I was keen to avoid.
If I can get ahead I'll change the engine anyway - a shattered output shaft seal housing from when a sprocket came loose many years ago makes it leak oil constantly.
All in all I'm happy for the time being.
With only a few hunnered quid to keep a roof over my head replacement was something I was keen to avoid.
If I can get ahead I'll change the engine anyway - a shattered output shaft seal housing from when a sprocket came loose many years ago makes it leak oil constantly.
All in all I'm happy for the time being.
- falcomunky
- SuperBike Racer
- Posts: 820
- Joined: Wed Jan 03, 2007 8:29 pm
- Location: NEUK
Re: Well - I did it anyway!
Having not removed my sprag yet!! what do you mean by remove 20mm f spring?? (sorry havin a dumb moment)KitchenSync wrote:Heh - I cut 20mm out of the spring - cleaned it all up - and it worked!
With only a few hunnered quid to keep a roof over my head replacement was something I was keen to avoid.
If I can get ahead I'll change the engine anyway - a shattered output shaft seal housing from when a sprocket came loose many years ago makes it leak oil constantly.
All in all I'm happy for the time being.
Falco 01 (mille rear swinger, falcuono styleeee bars)
Tuono v4 aprc 2012 akro pipe k+n air'd
(whispers) zx636-r 02 cos I just love it and can't sell it lol
Tuono v4 aprc 2012 akro pipe k+n air'd
(whispers) zx636-r 02 cos I just love it and can't sell it lol
- blinkey501
- World Champion
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- Joined: Sun May 29, 2011 6:28 pm
- Location: near doncaster
Re: Well - I did it anyway!
Tarks. Get yourself in the bar and get a round in and properly introduce yourself fella:smt002Tarks wrote:Having not removed my sprag yet!! what do you mean by remove 20mm f spring?? (sorry havin a dumb moment)KitchenSync wrote:Heh - I cut 20mm out of the spring - cleaned it all up - and it worked!
With only a few hunnered quid to keep a roof over my head replacement was something I was keen to avoid.
If I can get ahead I'll change the engine anyway - a shattered output shaft seal housing from when a sprocket came loose many years ago makes it leak oil constantly.
All in all I'm happy for the time being.
Tolerance will be our undoing.
Re: Well - I did it anyway!
Hi and welcomeTarks wrote:Having not removed my sprag yet!! what do you mean by remove 20mm f spring?? (sorry havin a dumb moment)KitchenSync wrote:Heh - I cut 20mm out of the spring - cleaned it all up - and it worked!
With only a few hunnered quid to keep a roof over my head replacement was something I was keen to avoid.
If I can get ahead I'll change the engine anyway - a shattered output shaft seal housing from when a sprocket came loose many years ago makes it leak oil constantly.
All in all I'm happy for the time being.

There are several repairs to the sprag for those on different budgets - the cheapest of all involves shortening the spring that goes round it. Basically no cost but probably a shorter life time until one of the other solutions needs to be done.
We'll point you to the info if you end up with such a problem (most of us haven't) .... and someone will probably suggest you search with our handy forum search function.

“Scientists investigate that which already is. Engineers create that which has never been.”
-- Albert Einstein
-- Albert Einstein