Hi guys,.. whilst I can also,.. (In Theory), and Would Normally agree I Have to say I cannot realistically see How this could actually be of any Real Benefit to the Retro Class.
Partly, due to the Style of construction, ie' Motor Box / Axle Carrier in One unit, there is Little difficulty if at all in setting up and maintaining the Bushing/Axle combination.
If one uses as an example, ANY /ALL of MY cars,.. as fitted with the Slick 7 Bushes,.. I have actually had cause to change the Koford rear axle in All my cars a number of times over the life span of my current cars.
As is probably reasonably well known,.. in CanAm as an example, I have been running the Same Chassis, since not long after getting into Retro racing,.. ??? 5 ?,... 6 ?? years ??,.. (Yeah,.. I Know I probably need to build another one at some stage),.. but 'Old Faithful', is Still an Extremely competitive chassis, as are Both of my F1 chassis,.. All of which Have done their Fair Share of Racing, being loaned to others, Winning and Placing and setting of fastest laps, etc,..
AND I Have YET to even THINK about changing the Bushes !!!!
Mechanically, there is NO Need !!,.. there IS NO Play !!
Although, I Will Have to put a New 'Set' in soon, as the Axle washers, Have 'Worn' the Flat bearing face slightly.
What can I say,.. those Slick 7 Bushings, within the realm of Retro,.. Are Truly awesome,.. and that is Also with All those years of the inevitable hard Crash and Wall Shot etc.
Would a Cheap Chinese Ball Bearing set STILL Be Play Free and Undamaged into it's Fifth or Sixth Year of regular and consistent running ???
Somehow,.. I think perhaps Not.
The same Longevity and experiences regarding the Slick 7 Bushes, have Also often been reported and commented on on Slot Blog many times.
I think you will Also find this to be the case with virtually Everyone's Retro cars fitted with those Bushings.
A Truly Perfect case of Not Needing to 'fix' something that is a Very Very long way from even being remotely Broken,..