07-04-2018, 02:23 PM
Here's an old-school question...
The recent thread on gearchange and final drive ratios inspired me to have a rummage through trunk #3.
To my slight surprise I found I have a diff gear set with 45 tooth crown wheel attached, in quite good nick but with no matching pinion. (You can see where this is going...)
I know very well it's not best practice, but even the likes of old Jack was not above mixing CWP gears if needs must, and I have a Nippy as wouldn't say no to a 5.625 ratio.
The simple question - tolerances aside - are the 8 tooth pinions interchangeable betwixt the various crown wheels which used them (41, 42 & 45, to my knowledge)? Or is there some difference in tooth geometry other than simply the number of teeth? I can't help but observe the 45 visibly has a lot of teeth, and it sows the doubt that the 'standard' pinion might be too fat in some way.
Strange feeling undoing grubby bundles tied up with string by my father more than 25 years ago. Can almost feel him peering over my shoulder grumbling 'what are your pilfering fingers doing in trunk #3?".
The recent thread on gearchange and final drive ratios inspired me to have a rummage through trunk #3.
To my slight surprise I found I have a diff gear set with 45 tooth crown wheel attached, in quite good nick but with no matching pinion. (You can see where this is going...)
I know very well it's not best practice, but even the likes of old Jack was not above mixing CWP gears if needs must, and I have a Nippy as wouldn't say no to a 5.625 ratio.
The simple question - tolerances aside - are the 8 tooth pinions interchangeable betwixt the various crown wheels which used them (41, 42 & 45, to my knowledge)? Or is there some difference in tooth geometry other than simply the number of teeth? I can't help but observe the 45 visibly has a lot of teeth, and it sows the doubt that the 'standard' pinion might be too fat in some way.
Strange feeling undoing grubby bundles tied up with string by my father more than 25 years ago. Can almost feel him peering over my shoulder grumbling 'what are your pilfering fingers doing in trunk #3?".
