Changing Pin sizes

V8Druid

V8Druid

do it as well as you can,but learn to do it better
not a bad price for a new 60mm broach
 
V8Druid

V8Druid

do it as well as you can,but learn to do it better
Maybe get the 200 quid job for this task that needs to happen and get some cheeks made for my other 8t ideas if they ever reach fruition 👍
gift here ....

more usual price for an HSS .... TCTs are dearer
 
doobin

doobin

Well-known member
gift here ....

more usual price for an HSS .... TCTs are dearer
I'd not use a carbide in this particular application. Way too much potential for chatter, which will wreck it very quickly. But yes, cheap!
 
V8Druid

V8Druid

do it as well as you can,but learn to do it better
I'd not use a carbide in this particular application. Way too much potential for chatter, which will wreck it very quickly. But yes, cheap!
agree to a degree .... the HSS would be a better bet for taking out 5mm ... better once you'd established a 'bore' to run in and won't self centre as well as an HSS .... but for making new holes ... that is a gift
 
T whiting

T whiting

Well-known member
Are you sure they won't fit your quick hitch as is or is it a spring lock?

Tbh the easiest way to change them is to flog them and buy some more and a new headstock for the breaker. Riddle buckets and anything non standard seem to make strong money at auction
 
Furniss

Furniss

Well-known member
Are you sure they won't fit your quick hitch as is or is it a spring lock?

Tbh the easiest way to change them is to flog them and buy some more and a new headstock for the breaker. Riddle buckets and anything non standard seem to make strong money at auction
I understand your thinking but im happy to mess about with them on a rainy day .... nothing there is urgent and im in France so its not as easy as the u.k re auctions etc and TBH I cant be arsed dealing with loads of questions and hassle flogging them on - rather adapt them - they are even worth more down here on kubota dims than JCB when I eventually get shut.

Also breaker is a good one but its a JCB HM100 so not as easy as a different headstock unfortunately.

Should be a doddle with a mag drill by the sounds of it 👍
 
Furniss

Furniss

Well-known member
UPDATE
Did the dirty and ordered some 25mm i/d 30mm o/d tube and sleeved it over the 25mm pins between the ears, might be a bit of a bodge 🤷‍♂️ but
pin centers are the same so picks bucket up lovely and means that if I go back to JCB from Kubota (which is likely) then I can just pull sleeves off
and bobs your uncle 👍
bucketbodge.jpg
 
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T whiting

T whiting

Well-known member
looks spot on there's probably less play there than in the hitch (y)
 
V8Druid

V8Druid

do it as well as you can,but learn to do it better
UPDATE
Did the dirty and ordered some 25mm i/d 30mm o/d tube and sleeved it over the 25mm pins between the ears, might be a bit of a bodge 🤷‍♂️ but
pin centers are the same so picks bucket up lovely and means that if I go back to JCB from Kubota (which is likely) then I can just pull sleeves off
and bobs your uncle 👍
View attachment 20837
where'd you find 25/30 tube Kev ..... the wall on that looks a lot thicker than 2.5mm ??? is that CDS?
33m CHS x 4mm will give you a 25mm bore, but with a seam (which is removable, with a bit of trickery) and could turn the outer down to 30 if needed ... bet yer hitch'd take a bit more and lose the slop that'd built up in it though
 
Furniss

Furniss

Well-known member
where'd you find 25/30 tube Kev ..... the wall on that looks a lot thicker than 2.5mm ??? is that CDS?
33m CHS x 4mm will give you a 25mm bore, but with a seam (which is removable, with a bit of trickery) and could turn the outer down to 30 if needed ... bet yer hitch'd take a bit more and lose the slop that'd built up in it though
Found it online (french) - no seam 2.5mm wall 👍 25mm id 30mm od
Screenshot_20201231-173007_Chrome.jpg
 
Quattromike

Quattromike

Well member-known
You might get similar on likes of ramparts or hydraulic cylinder parts suppliers
 
V8Druid

V8Druid

do it as well as you can,but learn to do it better

Seem to do race equipment.... roll cages etc
Cold Drawn Seamless then ...... that was bloody cheap ..... reasonable -- just looked again and worked it out at 12 a metre or is it 24 a metre ... if so .. 'kin 'ell :oops::oops:
 
Giles

Giles

Well-known member
Just done mine, had to buy a longer broach than I had and new dummy pins but only took 1 hour. @druid advice on hand, broach self centred and pins fit like a dream
 

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Furniss

Furniss

Well-known member
Top JOB (y)
What machines were you changing to / from ?
and you preferred this method to my method then ?
 
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