reaming sierra upright

[geeman]

well i just saw that i have to ream the sierra uprights at the bottom to allow the maxi ball joint to fit, but wondered what exactly needs to be done, as im not really very clear on what needs to be done in the hole at the bottom of the sierra upright.

Thanks

also i comletely fogot to buy the mushroom inserts, so where should i buy them from? also who do i contact at mk engineering for buying bits as there nothing roadster related on the site.

[Bonzo]

The Sierra front hub lower ball joint taper needs reaming to allow the fitmet of the Maxi ball joint.

The hand tool of choice seems to be Axminster tools 19mm handy reamer.

Handy reamer



For other components needed you can try 3GE componets

3GE

[geeman]

hi,
ok, i get it now, jut wondered would a 16mm reamer do do you think or is the hole bigger than that??

[RAYLEE29]

The reamer you need is tapered you need the 19mm one and luckily they are back in stock. be carefull when you order as i accidently ordered two but theyre not at all expensive.
I set mine up in the pillar drill and ran it on a low speed keep checking the fit of the maxi ball joint as you ream the hole.
you want maximum egagement of the taper but dont go too big or youll end up scrapping the upright.
Ray

[michmark]

Why can't the original Sierra (Merkur) ball joints be used?

Mark Bates

[RAYLEE29]

good question,I think its because they arent removable from the arms.
Ray

[geeman]

Originally Posted by RAYLEE29

The reamer you need is tapered you need the 19mm one and luckily they are back in stock. be carefull when you order as i accidently ordered two but theyre not at all expensive.
I set mine up in the pillar drill and ran it on a low speed keep checking the fit of the maxi ball joint as you ream the hole.
you want maximum egagement of the taper but dont go too big or youll end up scrapping the upright.
Ray

oh, i meant a 16mm tapered reamer. oh well, i may as well buy this anyway, its just delivery is more than the item and i dont need anything else from there.

[flyerncle]

Some have ran a 16mm drill through first,saves some time.