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dscscotty wrote:This is my usual method for lubrication of mag bearing. It's not a new concept.
vegansydney wrote:dscscotty wrote:This is my usual method for lubrication of mag bearing. It's not a new concept.
Interesting! So, could I fit a GP-tapered crank to an early Series 1 engine and retain the original 'channeled' mag housing? Or are you using a Casa 'Cooler' Performance multi-piece mag housing? If yes, would it be as easy a fitting the S1 oil seal (25-46-7) and an NU2205 bearing or is it slightly more complicated?
Just thinking out loud as I have a Framebreather project I've been procrastinating on for some time as I'm uncertain on which way to go with the engine.
Warkton Tornado No.1 wrote:If a deep groove ball bearing is utilised, the journal on the crank should be modified to be a looser fit in the bearing.
Knowledge wrote:Warkton Tornado No.1 wrote:If a deep groove ball bearing is utilised, the journal on the crank should be modified to be a looser fit in the bearing.
I was thinking about this WT1. If I remove the inner track of the NU bearing from the crank and put a roller bearing in the mag housing, I could relieve the steel on the crank (where the NU bearing sleeve was situated) with something like emery cloth, rather than actually machining it in the lathe. Slowly does it with lots of test-fits until the inside of the bearing just slips over the crank.
Is that along the lines you were thinking WT1?
Knowledge wrote:I intend to use a ball bearing, not a roller bearing.
I have been looking at deep groove ball bearings today and decided against them as they looked like the design would restrict the ease with which the petroil can access the balls. After all, the drive side bearing is not a deep groove bearing.
Does that sound sensible?
I have started stripping the mag flange today with the intention of undertaking this conversion.
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