40-50 Knuck con rod rollers

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nifty
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Re: 40-50 Knuck con rod rollers

#16

Post by nifty »

thepigstye wrote: Mon Sep 26, 2022 3:00 pm I know this will never work, better call Jims and see what they got to say. The cages and the female rod are taller than the crank pin. This set of flywheels were together with the old original pin, guy ujust wanted to replace the crank pin and shafts with new Jims stuff.cp4.jpg
By your own photo, the cages are not taller than pin shoulders, plus other wheel does not touch shoulder of pin, ergo more clearance.
If wheels pulled up hard against shoulders/step, wheels would be junk and never grip fully at tapers.
As I asked earlier, will the female rod fit between assembled wheels?
Dare I suggest you are going off half cocked and are blinded by your own negativity?

Nifty
thepigstye
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Re: 40-50 Knuck con rod rollers

#17

Post by thepigstye »

Sorry ya feel that way ol' chap. I'm sure you have never done anything even close to being wrong about something. I saw a gap, and since no other model with a traight pin has a gap, I assumed something was amiss.

But by my photo, the cages are taller than the journal, see the pic. Straight edge on top of cages, journal lower than straight edge. Please forgive my ignorance. People come on this website to get answers, not to get belittled.
nifty
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Re: 40-50 Knuck con rod rollers

#18

Post by nifty »

I see a gap from your cage to your straight-edge/feeler, which is sitting on your crankpin.
What do you see?
I concede that cages are taller than bare pin shoulders (which is irrelevant)
The fundamental point is that cages and female rod are not taller than gap between assembled wheels.
Nifty
Last edited by nifty on Fri Oct 07, 2022 2:22 pm, edited 2 times in total.
thepigstye
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Re: 40-50 Knuck con rod rollers

#19

Post by thepigstye »

That's a reflection of the feeler gauge and the cage.
nifty
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Re: 40-50 Knuck con rod rollers

#20

Post by nifty »

Goodo, thanks for the health advice, first thing Monday I'm off to the optometrist
Nifty
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Re: 40-50 Knuck con rod rollers

#21

Post by RUBONE »

Mutt,
If you remember back to your WR project it also had a stepped pin, and a gap. Without the gap the taper would never seat, rendering the assembly useless.
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Re: 40-50 Knuck con rod rollers

#22

Post by RooDog »

RooDog wrote: Fri Oct 07, 2022 11:54 am Think about it a minute. If the pin bottomed against the flywheel how would one know the tapers were tightly/properly seated? Thus, that is the reason for the gap. Make sense?
thepigstye
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Re: 40-50 Knuck con rod rollers

#23

Post by thepigstye »

Sounds logical, but why so much of a gap?
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Re: 40-50 Knuck con rod rollers

#24

Post by RUBONE »

thepigstye wrote: Sat Oct 08, 2022 2:29 pm Sounds logical, but why so much of a gap?
The bearing surface only needs to be as wide as the rollers, if the cages overhang a gap it makes zero difference. Same with the rod race, the part wider than the bearing just acts as a spacer to the thrust washer, rollers never run on it.
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Re: 40-50 Knuck con rod rollers

#25

Post by thepigstye »

Thanks for the explanation. Much appreciated
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