Stainless Discs on 91 Ultra
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Road Captain
Joined: Nov 2009
Posts: 737
Likes: 4
From: Scotland,UK
Thanks, its been a work in progress for the last 18 months, almost done now!
I got the pads from FatBoyzDiner (i get almost all my stuff from them) asked for the best suiting pads for the discs they had sold me a few weeks earlier, I painted the centres of mine gloss back with a little tin of Humbrol as i think the black centred ones look better.
I used the original bolts, as they were untouched from new and still in good condition (no mashed heads etc)
Here fitted to my nice new streetglide front wheel
I got the pads from FatBoyzDiner (i get almost all my stuff from them) asked for the best suiting pads for the discs they had sold me a few weeks earlier, I painted the centres of mine gloss back with a little tin of Humbrol as i think the black centred ones look better.
I used the original bolts, as they were untouched from new and still in good condition (no mashed heads etc)
Here fitted to my nice new streetglide front wheel
Have looked at the Platinum Air ride kit (on your RK) before and was a bit taken aback at the price Ł950. Gotta say though....it looks like a quality piece of kit and is probably well worth the money.
Im needing new windows for my house so its just not possible....or is it !!! Do you think next winter will be a cold one.?? Bungo.
Club Member
Joined: Jun 2007
Posts: 45,429
Likes: 2,898
From: Bedford UK
Hi Bungo, the expression 'floating' is not a very good choice of words, as descriptions go. In Neil's photo the black hub of the disc is a separate piece of metal from the braking part, the two being held together by the hollow buttons (5 on that disc). The separation of the two greatly reduces heat transfer from a hot disc to the hub and bearings (more important on racing bikes than ours). The buttons hold them together, so there is no motion between them. When new they are tight, as they get more used the buttons slacken a little and they can even rattle in some circumstances. There are no bearings involved.
Thread Starter
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Road Captain
Joined: Nov 2009
Posts: 737
Likes: 4
From: Scotland,UK
Hi Bungo, the expression 'floating' is not a very good choice of words, as descriptions go. In Neil's photo the black hub of the disc is a separate piece of metal from the braking part, the two being held together by the hollow buttons (5 on that disc). The separation of the two greatly reduces heat transfer from a hot disc to the hub and bearings (more important on racing bikes than ours). The buttons hold them together, so there is no motion between them. When new they are tight, as they get more used the buttons slacken a little and they can even rattle in some circumstances. There are no bearings involved.
I have been doing a little "reading up" on the floating discs and have found that there is 5 "bobbin" discs and more expensive discs with more "bobbins".
Is that the same as buttons?
Just wondering if the performance and/or wear & tear is based on bobbin numbers.
When I go to bed tonight Ill be counting "bobbins" instead of sheep.
Bungo
Club Member
Joined: Jun 2007
Posts: 45,429
Likes: 2,898
From: Bedford UK
Yes, buttons = bobbins. Not sure if they have a correct name! The round things that hold the two parts together. Can't answer for any merit that more buttons may have. Our discs, floating or not, are pretty robust. If you are anxious about such things, the Harley floaters have ten of them, as do my Harrison front discs. This is my rear wheel and disc.
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Road Captain
Joined: Nov 2009
Posts: 737
Likes: 4
From: Scotland,UK
Yes, buttons = bobbins. Not sure if they have a correct name! The round things that hold the two parts together. Can't answer for any merit that more buttons may have. Our discs, floating or not, are pretty robust. If you are anxious about such things, the Harley floaters have ten of them, as do my Harrison front discs. This is my rear wheel and disc.
I suppose most of these type of products are priced according to quality+ work hours put into the their making.
Perhaps its the old story.... "you only get what you pay for."
Just curious..... but what Brand,type of brake rotors/discs would have been on an original 91 Ultra from the factory?. Bungo
ps. great weather in Scotland (& UK) today so went for a nice ride.
Club Member
Joined: Jun 2007
Posts: 45,429
Likes: 2,898
From: Bedford UK
The rear brake is fine, but the front's are nothing to shout about. The rear brake when in good fettle is quite capable of locking the wheel when solo, so I wouldn't change that for the sake of it and as it is out of sight, it doesn't really matter what it looks like! The front brakes however do benefit from improved discs and pads.
Last edited by grbrown; Mar 26, 2012 at 04:51 AM.
Cruiser
Joined: Dec 2010
Posts: 187
Likes: 5
From: SE London/Kent Borders UK
As far as the bobbins go as soon as you go over 6 the price starts to rocket, i dont really understand why there is such a price hike as i cant imagine there is any major engineering difference in them but perhaps there is. I have a friend who has done 30+k on harley floaters and they are still great and dont rattle at an annoying level but do rattle a bit.
I guess you need to balance the gain with the price level
As for the platinum air ride its fantastic and worth every penny, i can set the ride height and the rebound levels to suit the roads im riding and if i am loaded with camping gear or two up etc. Luckily i got them barely used from a friend who bought them new from the US so they were like new for a heavily discounted price! which is always nice.
I guess you need to balance the gain with the price level
As for the platinum air ride its fantastic and worth every penny, i can set the ride height and the rebound levels to suit the roads im riding and if i am loaded with camping gear or two up etc. Luckily i got them barely used from a friend who bought them new from the US so they were like new for a heavily discounted price! which is always nice.
Thread Starter
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Road Captain
Joined: Nov 2009
Posts: 737
Likes: 4
From: Scotland,UK
As far as the bobbins go as soon as you go over 6 the price starts to rocket, i dont really understand why there is such a price hike as i cant imagine there is any major engineering difference in them but perhaps there is. I have a friend who has done 30+k on harley floaters and they are still great and dont rattle at an annoying level but do rattle a bit.
I guess you need to balance the gain with the price level
As for the platinum air ride its fantastic and worth every penny, i can set the ride height and the rebound levels to suit the roads im riding and if i am loaded with camping gear or two up etc. Luckily i got them barely used from a friend who bought them new from the US so they were like new for a heavily discounted price! which is always nice.
I guess you need to balance the gain with the price level
As for the platinum air ride its fantastic and worth every penny, i can set the ride height and the rebound levels to suit the roads im riding and if i am loaded with camping gear or two up etc. Luckily i got them barely used from a friend who bought them new from the US so they were like new for a heavily discounted price! which is always nice.
Suppose its the old...you pays your money etc., etc.
Sounds like you got a GREAT deal with your platinum air ride.
Would love the platinum air ride but as I said...... windows come first.!
Or do they? Bungo.
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Thread Starter
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Road Captain
Joined: Nov 2009
Posts: 737
Likes: 4
From: Scotland,UK
Didnt know that Graham but Im sure there are other Floating Stainless 6-10 bobbin discs that cost much,much more. Wonder if its down to the quality/grade of the Stainless material used in the making. Seem to remember that there are lots of grades of Stainless metal,for all sorts of uses, and all priced accordingly. Bungo