- Thread starter W.olly
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On most cars its not just the drum that will need altering but the hub also. A few do have the hub & drum combined.
Your insurance will want to know about this & will likely want an engineers report about the mod & load the policy with a hefty premium.
Your insurance will want to know about this & will likely want an engineers report about the mod & load the policy with a hefty premium.
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Moved to the correct section. 
I'd say get the wheels to fit the drums, you would be in a whole world of trouble if anything happened due to you doing something that you shouldn't do and my head tells me drilling drums is something that you shouldn't do.
I'd say get the wheels to fit the drums, you would be in a whole world of trouble if anything happened due to you doing something that you shouldn't do and my head tells me drilling drums is something that you shouldn't do.
brightspark
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dont the drums just push over the wheel studs and sandwich between the hub and wheel. if so re drilling wont be a problem as they only stop the drum from turning it wouldnt weaken them ??
W.olly
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Depends as when i did it to this Acty it has studs in the the drum, but i know what you mean as some have studs in the hubs
I fitted mini wheels to it, reason i ask is i want to do it properly, as leagally this time, i fancy another one
As said it's done all the time with both discs and drums both of which exist in 'slip over the hub' flavours and those that double up as the hub.
A couple of things that haven't been mentioned yet...
1. It's not uncommon for the manufacturer to 'sculpt' the area that the bolts/studs fit i.e. add webs/locally increase the casting thickness where the holes are. Sometimes there's very little meat elsewhere...
2. Wheel load ratings. I know an Acty is a little thing but car wheels on commercials is usually an insurance says no thing and often with good reason.
3. Doesn't always apply but when mixing and matching wheels it's generally important to get them fitting 'hubcentrically', more so if point 1 applies and/or the wheels are ally. Wheel bolts are typically only supposed clamp the wheel not locate it. The wheel hub assembly functions like a clutch and the fasteners should only see tension. If they're not hubcentric the studs/bolts will see bending forces in use and, depending on bolt seat design, alloys can see forces they were never designed to deal with
Along the same lines as point 2. a mate of mine fitted a set of Compomotive 3 piece wheels to one of his cars (big '50s Yank) as they were there, the right PCD etc and had a good set of tyres on 'em. When cleaning it a few months later he noticed a couple of the split rim bolts had gone AWOL so called Compomotive to order some replacements. According to him (so 'never let the truth get in the way a good yarn' applies) they seemed concerned and asked what the wheels fitted to etc. When he told them their response was that the wheels were superlights and only rated for something like 400kg each so 6 up in a two ton plus Yank barge was far from ideal!
A couple of things that haven't been mentioned yet...
1. It's not uncommon for the manufacturer to 'sculpt' the area that the bolts/studs fit i.e. add webs/locally increase the casting thickness where the holes are. Sometimes there's very little meat elsewhere...
2. Wheel load ratings. I know an Acty is a little thing but car wheels on commercials is usually an insurance says no thing and often with good reason.
3. Doesn't always apply but when mixing and matching wheels it's generally important to get them fitting 'hubcentrically', more so if point 1 applies and/or the wheels are ally. Wheel bolts are typically only supposed clamp the wheel not locate it. The wheel hub assembly functions like a clutch and the fasteners should only see tension. If they're not hubcentric the studs/bolts will see bending forces in use and, depending on bolt seat design, alloys can see forces they were never designed to deal with
Along the same lines as point 2. a mate of mine fitted a set of Compomotive 3 piece wheels to one of his cars (big '50s Yank) as they were there, the right PCD etc and had a good set of tyres on 'em. When cleaning it a few months later he noticed a couple of the split rim bolts had gone AWOL so called Compomotive to order some replacements. According to him (so 'never let the truth get in the way a good yarn' applies) they seemed concerned and asked what the wheels fitted to etc. When he told them their response was that the wheels were superlights and only rated for something like 400kg each so 6 up in a two ton plus Yank barge was far from ideal!
the snooper
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W.olly
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Thanks for the info guys, i was going to get some adaptors made last time but as said, they are expensive and give a wider wheelbase, on the Acty they were 6x10 wheels and came out a lot, and for the hubcentric there are shims you can add to take up any space.
These Acty drums are studded in the thinnest part of the drum, opposite the 4 webs, this is what i got machined down and drilled out.
So down to insurance then, i can cope with that as i know a few that are good with mods from my 4x4 off road days. Although they mite think that drilling brake parts is a bit to far, can only ask.
thanks again guys
wolly
These Acty drums are studded in the thinnest part of the drum, opposite the 4 webs, this is what i got machined down and drilled out.
So down to insurance then, i can cope with that as i know a few that are good with mods from my 4x4 off road days. Although they mite think that drilling brake parts is a bit to far, can only ask.
thanks again guys
wolly
BrokenBiker
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just out of interest, as I cant see it mentioned anywhere in this thread, but what PCD are your hubs/drums originally?
and do you have a specific set of wheels you want?
I know that the wheel whores forum have pretty much every PCD available for pretty much everything, just gotta find the guy selling themm
and do you have a specific set of wheels you want?
I know that the wheel whores forum have pretty much every PCD available for pretty much everything, just gotta find the guy selling themm
W.olly
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OK Langy, you got me there lol, its been a long week lol
The wheels i want to use are classic mini type, 4x4inch PCD and the Acty is 4x120mm, the only other wheel i found are the old Honda Accord and another more scarce car i cant remeber the name of. I searchd all over the internet on every wheel PCD cgart i could find and nothing matchs up except the above which are just as hard to find.
I did egt aprice for a set of wheels to be made and that came back at around £450 a set of 4, but no idea of atyle as i went dizzy with shock lol.
It wasnt to bad a price realy once i got the hubs machined and bought a set of wheels and tyres it wasnt far of that price.
The wheels i want to use are classic mini type, 4x4inch PCD and the Acty is 4x120mm, the only other wheel i found are the old Honda Accord and another more scarce car i cant remeber the name of. I searchd all over the internet on every wheel PCD cgart i could find and nothing matchs up except the above which are just as hard to find.
I did egt aprice for a set of wheels to be made and that came back at around £450 a set of 4, but no idea of atyle as i went dizzy with shock lol.
It wasnt to bad a price realy once i got the hubs machined and bought a set of wheels and tyres it wasnt far of that price.
Might be worth having a chat with mtecbrakes.co.uk. I've used them in the past for regular parts and they have been great to deal with. IIRC they have manufacturing facilities on site.
Lawnmowerboy
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With the rocking horse sh** box!
CompoSimmonite
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If you intend fitting Mini steel wheels then what about having your Acty items "banded" or their centres cut out and attached to Mini rims ?
With alloys why not have the wheels redrilled ?
Paul H
With alloys why not have the wheels redrilled ?
Paul H
W.olly
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Hi Paul, i would be fitting alloys and redrilling the wheels is not doable on the wheels as there isnt the space to do so.
I have done the steel wheel idea in the past for off roading but that would be the smae as drilling the drums..on insurance matters.
I have done the steel wheel idea in the past for off roading but that would be the smae as drilling the drums..on insurance matters.
