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IF IT BLEEDS WE CAN KILL IT ,THIS STUFF WILL MAKE YOU A GODDAM SEXUAL TYRANASURUS ,YOUVE BEEN PUSHING TOO MANY PENCILS DILLON .GET TO THE CHOPPER

What are you doing about con-rods and pin?

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08 Specialized Langster

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IF IT BLEEDS WE CAN KILL IT ,THIS STUFF WILL MAKE YOU A GODDAM SEXUAL TYRANASURUS ,YOUVE BEEN PUSHING TOO MANY PENCILS DILLON .GET TO THE CHOPPER

sorry willy just couldn't help it

You’re leaving it a bit late on Valentine’s Day, you might be lucky and finds a couple of Herbert’s or Gilberts about

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Buell Ulysses XB12X 06/08

Gonr riiiight over my head today mate .still lov ya though

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IF IT BLEEDS WE CAN KILL IT ,THIS STUFF WILL MAKE YOU A GODDAM SEXUAL TYRANASURUS ,YOUVE BEEN PUSHING TOO MANY PENCILS DILLON .GET TO THE CHOPPER

time marches on slowly .right von now has a working big end refurb set up for early XB,s and tuber taper cranks regarding bearings .the pics show the set up for XB,s regarding pin ,the pin is a slightly oversized on the flywheel sides to accomadate for strained or broched flywheels, the pins will be made from EN 36 ,case hardened 40 thou deep and as stated above, slightly oversize to accomadate danged flywheels ,pins will be finnised to size in house ,bearing cage are of vons design and one piece for strength and will be copper then silver plated and de-embrittled to def standerd ,i will fit one in grumbly and another in my spare motor ,normski in newark will get the first set on a taper pin crank ,the pin in the pics is a working mock up

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IF IT BLEEDS WE CAN KILL IT ,THIS STUFF WILL MAKE YOU A GODDAM SEXUAL TYRANASURUS ,YOUVE BEEN PUSHING TOO MANY PENCILS DILLON .GET TO THE CHOPPER

Got me thinking , this has Is there any optimum ratio for the diameter of the rollers in relation to the diameter of the crankpin, or is it just based on the load and speed the bearing is subjected to?

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If your dreams don't scare you, they are not big enough.

will ask brian tomoz mate ,one thing is for sure the more rollers the better to a point, a roller at say 12, 3, 6 and 9 oclock has a lower working life than say 12 ,1,30, 3, 4,30, 6, 7.30, 9, 10.30 on a cock face ,recon you can see were this is going mate

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IF IT BLEEDS WE CAN KILL IT ,THIS STUFF WILL MAKE YOU A GODDAM SEXUAL TYRANASURUS ,YOUVE BEEN PUSHING TOO MANY PENCILS DILLON .GET TO THE CHOPPER

Smaller rollers are experiencing more surface feet per minute. 6 or 1/2 dozon of another. Without testing, you can't really make assumptions that more rolllers spreading the load will last longer. Kinda like the oil pump drive gear jig you built. What are you going to figure out that the MofoCo hasn't already done?

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Bob Krzeszkiewicz
2012 XR1200X - 2011 Kawasaki Z1000SX - 1999 Buell X1

The art of bearing application is well past the point of 'suck it and see'. For the engines that my employer designs and produces, there are design standards for (roller) bearing application and there will be for any application based on surface speed, load, number of rollers etc. The problem that Willy has for his application is the limitations on pin size and big end eye size, hence, unless I have missed the point (which is quite possible), Willy is increasing the number of rollers but maintaining their diameter. He is doing this by redesigning the cage, and even for a numpty like me, it is clear to see, as Willy points out, the more rollers, the more surface area to dissipate the load and the lower the load per roller.


Could have said that about Buell too, but in 08 they created a crank with a big pin in answer to crank failures in service. Surely the MoCo had done and dusted the crank, just as they had other components that Buell re-engineered.

I say full marks to Willy for getting Mr Von Shackleford interested in such a project.

Now, questions for Willy...

Why is the cage going to be silver plated?

Will the crank webs have to be bored at the big end to take the oversized pin?

Are you addressing the oil feed holes in the pin?

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08 Specialized Langster

What I'm not understanding is what exactly is Willy's problem and therefore his application needs for a custom roller cage. Perhaps I missed a separate thread.

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Bob Krzeszkiewicz
2012 XR1200X - 2011 Kawasaki Z1000SX - 1999 Buell X1

What a BE, I can't read, the rollers are smaller and there's more of them...

This is the original thread Mr Glider:

viewtopic.php?p=206425#p206425

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08 Specialized Langster

But the contact area is getting smaller (according to Hertz's theory), therefore load will increase, smaller rollers turn more often, so a single point gets loaded and unloaded more often and the relation of the roller surface to bearing surface is decreasing, which is increasing tribological stress. I'm only the software guy, but if I had to redesign such bearing, I would vote for larger rollers.

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"It is often said that before you die your life passes before your eyes. It is in fact true. It's called living."
Terry Pratchett

..........and don't call me 'cock face'

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If your dreams don't scare you, they are not big enough.

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08 Specialized Langster