[Healeys] King Pin with needle bearings

[Chris Dimmock]

The other huge difference is the rapid acceleration, and sudden  
reversal of direction, in roller rockers when used in a pushrod  
engine. Never do it.
King pins etc are fine. Yes, not an engineering text book 'perfect'  
application, but slow and lower stress.

Sent from my iPhone

On 12/01/2010, at 4:36 PM, Pieter and Linda <pieters at pt.lu> wrote:

> The big difference here is that in cam rockers the load is always in  
> one direction, up. In the king pins the load is spread fairly evenly  
> over all the bearings, thus reducing the friction when turning. They  
> made a huge difference to my car with the 6 inch rims.
> cheers
> Pieter
> On 12/01/2010, at 6:25 AM, Neil Anderson wrote:
>
>> Bob,
>>
>> Not to be a smart a**, but you have heard of u-joints, haven't you?
>>
>> Neil Anderson
>>
>> -----Original Message-----
>> From: healeys-bounces at autox.team.net [mailto:healeys- 
>> bounces at autox.team.net]
>> On Behalf Of Bob Spidell
>> Sent: Monday, January 11, 2010 8:07 PM
>> To: sales at justbrits.com
>> Cc: 4 - Healeys
>> Subject: Re: [Healeys] King Pin with needle bearings
>>
>> What's the advantage to these?
>>
>> I know, it should be obvious, but I've heard it's not a particularly
>> good idea to use roller bearings where the parts don't rotate
>> completely; i.e. the parts rock back and forth on the same limited
>> surface, possibly wearing grooves (if the parts/bearings don't rotate
>> completely, it subjects one part of the bearing to the most wear).
>> Specifically, I heard this about using needle roller bearings on cam
>> rockers.
>>
>>
>> bs
>>
>>
>>
>> Sales at " Just Brits " wrote:
>>> << Sometime in the past someone on the list had mentioned
>>> that there is a king pin setup for the big Healeys that uses
>>> needle bearings instead of bronze bushings.
>>> What I need is the supplier name and URL. >>
>>>
>>> I am in same 'boat' as Bob is Steve, don't have
>>> in stock and I also expect in around 2 weeks