some say 135.00 turned are to high? new to high at 165.00 , drums that have not been turned people dont want ??? just wanting feed back from people, no book on avg . that i know of ?
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any one know used rear brake drum& hub avg. prices?
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The most that I have paid for a used drum with hub was around $40. That was for a late V8 fined front drum that hadn't been turned. New fined rear V8 drums are available for $160. They don't have a hub which makes them more appealing for the flanged axle conversion. Personally I would not pay $135 for a used drum.
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I am currently on the look out for 11" rear drums, for the the 63GT, that originally came with front disc. At the last SDC meet, 11" rear drums were at SI, for around $200, but with hubs included. I am doing a flanged axle conversion simultaneously, so need 11" drums without hubs. Phil Harris normally has them, but did not bring any to the meet. I expect them to be around $200 each, but still trying to figure out how to avoid shipping costs.
Front, finned 11" drum brakes once brought a premium price. But for over a decade now, they have been thick on the ground, as more folks are converting to front disc. As for rear, finned, pre-turned, 10" drums, with plenty of, "meat" still on them, I'd pay near new price, since the old stuff seems better, in general. But that's just me, and thankfully I do not need any for the foreseeable 100 years. LOL
Anyone looking to sell a pair of good condition, pre-turned,11", finned, rear drums without hubs?
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There is a legal limit for how far a brake drum can be 'turned'.
Usually it is .060" larger than the new surface diameter.
So, if you have an 11" drum, the legal max is 11.060".
If you get into a wreck and they check your equipment, it could be expensive if you are out of legal spec's.
A 'turned' brake drum will not give you the max service life you can expect with a new drum.
This is another reason to find that flaps or shop that still turns drums and make double sure that they only take a minimal cut to 'true up' a brake drum.
Some kids will hog out .015" and do a .004" clean up pass.... When .005" might have been all that was needed.
One other thing. A 'pre-turned' drum is almost a misnomer. All brake drums are turned.
But if you are talking about a rear drum on a flanged axle (that needs to be swaged)..Or even a front drum.
Then the 'pre-turned' is worth nothing, because the drum needs to be turned to true it up 'after' the drum
has been mounted and swaged to the hub.
The 'truing' of the drum is the last thing you do before mounting it on the vehicle.
And look at how your store stocks drums. They should always be stored flat, and not on end.
HTIH (Hope The Info Helps)HTIH (Hope The Info Helps)
Jeff
Get your facts first, and then you can distort them as much as you please. Mark Twain



Note: SDC# 070190 (and earlier...)
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Lets ASSume we all know about legal limits, and the difficulty of finding someone with a machine, who is competent enough to do the job. That leaves the swaging you mentioned. Modern technology, at least anything I have seen recently, does not swage the drum to the flanged axle. The drum slips over the axle, and centers on the axle nub, that fits neatly inside the center hole of the hub. Some have retainer screws or clips to keep the hub from falling off while changing tires, but the drum is held tightly be the lug nuts, which also hold the tire-wheel tightly in place.Originally posted by DEEPNHOCK View PostThere is a legal limit for how far a brake drum can be 'turned'.
Usually it is .060" larger than the new surface diameter.
So, if you have an 11" drum, the legal max is 11.060".
If you get into a wreck and they check your equipment, it could be expensive if you are out of legal spec's.
A 'turned' brake drum will not give you the max service life you can expect with a new drum.
This is another reason to find that flaps or shop that still turns drums and make double sure that they only take a minimal cut to 'true up' a brake drum.
Some kids will hog out .015" and do a .004" clean up pass.... When .005" might have been all that was needed.
One other thing. A 'pre-turned' drum is almost a misnomer. All brake drums are turned.
But if you are talking about a rear drum on a flanged axle (that needs to be swaged)..Or even a front drum.
Then the 'pre-turned' is worth nothing, because the drum needs to be turned to true it up 'after' the drum
has been mounted and swaged to the hub.
The 'truing' of the drum is the last thing you do before mounting it on the vehicle.
And look at how your store stocks drums. They should always be stored flat, and not on end.
HTIH (Hope The Info Helps)
So the challenge for me, is to find a hub-less drum, then find someone with a machine to turn that drum. That is why I'd pay near new price, for a drum as I described. By pre-turned, maybe I shoulda said, pre-re-turned, but ASSumed most would knew we are talking about used parts here. Same as the OP, in his question about folks not wanting an un-turned drum. I believe they would be harder to sell, because of the problems mentioned above.
Thanks for the review of basics though.
Last edited by JoeHall; 06-09-2017, 07:49 AM.
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Just to clarify a few things here. .060" is in most cases the max you can turn a drum to. However the wear limit is usually .100". At least that is normal for cars. Large trucks may have different specs. I have worked brakes and drums for about 50 years but have now semi retired and sold my drum lathe.Originally posted by DEEPNHOCK View PostThere is a legal limit for how far a brake drum can be 'turned'.
Usually it is .060" larger than the new surface diameter.
So, if you have an 11" drum, the legal max is 11.060".
If you get into a wreck and they check your equipment, it could be expensive if you are out of legal spec's.
A 'turned' brake drum will not give you the max service life you can expect with a new drum.
This is another reason to find that flaps or shop that still turns drums and make double sure that they only take a minimal cut to 'true up' a brake drum.
Some kids will hog out .015" and do a .004" clean up pass.... When .005" might have been all that was needed.
One other thing. A 'pre-turned' drum is almost a misnomer. All brake drums are turned.
But if you are talking about a rear drum on a flanged axle (that needs to be swaged)..Or even a front drum.
Then the 'pre-turned' is worth nothing, because the drum needs to be turned to true it up 'after' the drum
has been mounted and swaged to the hub.
The 'truing' of the drum is the last thing you do before mounting it on the vehicle.
And look at how your store stocks drums. They should always be stored flat, and not on end.
HTIH (Hope The Info Helps)
Nick
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