Radius Arm. Two Roller Brearing?
Started by
Tomf
, Jun 29 2009 08:03 PM
18 replies to this topic
#16
GraemeC
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Posted 01 July 2009 - 08:52 AM
Or a specially made bush
#17
Ethel
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Posted 01 July 2009 - 09:02 AM
It might not be long until there's more of a market for some specially made arms.
#18
Rich.
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Posted 10 May 2010 - 11:21 AM
I know im dragging this up abit, but i ran into this problem at the weekend and just thought id post up my solution.
I spent ages trying to figure it out, and with TMF being down i couldnt find an answer, so i guessed it had been a home made modification done by someone. Anyway, i had already bought two recon kits and wanted to get them fitted.
So, i popped out the old roller bearings no problem. Now, theres a cup that these bearings sit in, which is press fitted into the cast arm. These are what has been bored out to accept the larger diameter of the needle bearing. So, i stuck the arm in the hydraulic press and pressed out one of these 'cups'. I measured it up and measured the OD of the Bush, then subtracted a couple of thou to allow it do compress in the bush. I then turned up two new cups, one for each size. Super simple machining providing you own a workshop, if not, i carnt imagine a machine shop charging much. Once i turned these to the correct size, i pressed the bush in and reamed it on the lathe, which makes it easier than trying to do it in situe in the radius arm.
After i had the bush reamed out to the correct size, i pressed the cup back into the arm with the hydro press again, slipped the grease tube in and pressed in the bearing, job done.
Another thing to note is that the twin bearing solution is actually very very poor, as the taped grease tube inside will not supply grease to the bearing end that has been modified, as the taper on the tube means it is pushing grease all over the shaft instead of into the bearing. Although to make this sollution work you would just have to replace it with a pice of straight tube instead.
I hope this helped anyone in a similar situation that i was.
Rich
I spent ages trying to figure it out, and with TMF being down i couldnt find an answer, so i guessed it had been a home made modification done by someone. Anyway, i had already bought two recon kits and wanted to get them fitted.
So, i popped out the old roller bearings no problem. Now, theres a cup that these bearings sit in, which is press fitted into the cast arm. These are what has been bored out to accept the larger diameter of the needle bearing. So, i stuck the arm in the hydraulic press and pressed out one of these 'cups'. I measured it up and measured the OD of the Bush, then subtracted a couple of thou to allow it do compress in the bush. I then turned up two new cups, one for each size. Super simple machining providing you own a workshop, if not, i carnt imagine a machine shop charging much. Once i turned these to the correct size, i pressed the bush in and reamed it on the lathe, which makes it easier than trying to do it in situe in the radius arm.
After i had the bush reamed out to the correct size, i pressed the cup back into the arm with the hydro press again, slipped the grease tube in and pressed in the bearing, job done.
Another thing to note is that the twin bearing solution is actually very very poor, as the taped grease tube inside will not supply grease to the bearing end that has been modified, as the taper on the tube means it is pushing grease all over the shaft instead of into the bearing. Although to make this sollution work you would just have to replace it with a pice of straight tube instead.
I hope this helped anyone in a similar situation that i was.
Rich
#19
liirge
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Posted 10 May 2010 - 11:30 AM
i believe that the mini moke at some point went over to twin roller bearings at some stage, but they have slightly different radius arms full stop.
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