Discussion
RobXjcoupe said:
Original studs fit in a cast iron hub. Aluminium isnt good to fit a second set of studs in.
Personally I would fit longer studs so the Ali spacer is simply sandwiched between the hub and wheel.
If you want a second set of studs I think the spacers need to be made from steel.
Just my opinion though
Hi Rob,Personally I would fit longer studs so the Ali spacer is simply sandwiched between the hub and wheel.
If you want a second set of studs I think the spacers need to be made from steel.
Just my opinion though
Any reason why ali isn't good..?
Not trying to be argumentative, just can't find any made out of steel - all seem to be ali or alloy.
From what I understand, the usual point of failure with these spacers is the bolts (presumably increased leverage due to the spacer) - so don't really want to go down the longer-bolt route (with increased fitting time having to change them in the hub), as shorter ones would appear to have less stress on each set and will bolt straight on...
I think I'm with Rob on this - a 5mm sliver of ally is fine, but aluminium does work harden, crack, wear etc etc and a big 25mm chunk of it relying on the bolt clamping forces up against the ally to keep supporting the wheels doesn't appeal to me. There is quite a bit on the inter web discussing spacer failures... although TVR are lightweight I suppose, with limited forces on the wheels compared to a 4x4 or a Skyline, but I'd go with steel, or longer studs right through to the existing hubs. Heavy in steel though!
I fitted Sheels longer studs for his 20 mm spacers on the front and they nipped up lovely. The forces needed to snap studs on a Tiv would surely have the wheel collapse in most cases or am I missing a fundamental !
As said it's a light footprint on a Tiv so not nearly as demanding as on a heavier car.
As said it's a light footprint on a Tiv so not nearly as demanding as on a heavier car.
From my perspective, wheels are held on to the hub by the high tensile studs designed to be held in place with a machined cast iron hub. An aluminium spacer using a second set of studs are using the same design stud fitted into Ali rather than iron. The serrations to stop the stud turning in iron are different if used in aluminium and the flange to stop the stud pulling through aluminium is different to that when mounted in cast iron, hence from my toolmaker point of view steel spacers with a second set of studs should be used or specific studs designed for use within aluminium should be used.
Please note the weight of your car sits on the 63.4mm hub. The studs and nuts keep the wheels secured to the hubs and/or hubcentric spacers.
just my point of view though.
Please note the weight of your car sits on the 63.4mm hub. The studs and nuts keep the wheels secured to the hubs and/or hubcentric spacers.
just my point of view though.
Yes - not a pretty sight...
The pic above makes me think again however
RobXjcoupe said:
Please note the weight of your car sits on the 63.4mm hub. The studs and nuts keep the wheels secured to the hubs and/or hubcentric spacers.
This is true, but the twisting force of the torque upon the wheel will be transferred through the bolts - and having read the bolts being the common cause of failure, thought that 2 shorter sets of bolts would limit the chance of this happening.The pic above makes me think again however
A picture is worth a thousand words and above does show exactly what happens using aluminium spacers and two sets of studs.
Twisting due to torque with longer studs would be minimum but using correctly fitted longer high tensile studs and the hubcentric spacer with a good fit on the original hub is the way I would be happy with.
Twisting due to torque with longer studs would be minimum but using correctly fitted longer high tensile studs and the hubcentric spacer with a good fit on the original hub is the way I would be happy with.
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