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8" Diam Front Brakes by VOCSC

rwhitne2

Active Website User
VOC Member
Any one with experience using the 8 in front brake mfg. by Hugh McAllister? My bike is a unrestored D Shadow w/ 12000 orig mi - runs fine. Brakes - the usual.
 

Vincent Brake

Well Known and Active Website User
VOC Member
best brake

what can I say, its twice as heavy and double surface does not give you double braking force, twin leading shoes does, even more when at both sides, so if you want to give them a try, and convert to the 2x2LS conversion kit, made UK looks, Dutch quality, (all duch drivers use em) see advert in MPH
thanx for starting this thread.

vincent brake speet
 

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vapide

Well Known and Active Website User
Non-VOC Member
Are the 8" brakes really twice as heavy?

I'd love to see a shootout between the 8" and the 4LS brakes, and see which really work best. Oh, and an optimized set of standard brakes (heavy cables, all reinforcements, stiffeners and braces, skimmed-to-fit-new linings, and maybe Lightning plates) as a control.

I think both of the new brakes setups have a problem all too common with Vincent parts. They are made in tiny batches, so they are expensive, which means not many sell, which means they only get made in tiny batches. I find it hard bring myself to spend "real" money on any mod when I know I will have to take it off in another 5 or 10 years, and reinstall the old parts if I can find them, so I can sell the machine for $37,000,000 on ebay.
 

mercurycrest

Well Known and Active Website User
VOC Member
Are the 8" brakes really twice as heavy?

I'd love to see a shootout between the 8" and the 4LS brakes, and see which really work best. Oh, and an optimized set of standard brakes (heavy cables, all reinforcements, stiffeners and braces, skimmed-to-fit-new linings, and maybe Lightning plates) as a control.

I think both of the new brakes setups have a problem all too common with Vincent parts. They are made in tiny batches, so they are expensive, which means not many sell, which means they only get made in tiny batches. I find it hard bring myself to spend "real" money on any mod when I know I will have to take it off in another 5 or 10 years, and reinstall the old parts if I can find them, so I can sell the machine for $37,000,000 on ebay.

I have two sets of 4LS Brakes on my B and on my D.... they work!.... We damn near killed ourselves on some uphill twisties am few years ago on the D due to the combination of high speed cornering and a sophmoric repoir between man and machine with green ferodo stock brakes! I don't have any experience with the 8" ones. But, If you want cheap parts, buy a Yugo...:D
Cheers, John
 

martinamotor

Well Known and Active Website User
VOC Member
Are the 8" brakes really twice as heavy?

I'd love to see a shootout between the 8" and the 4LS brakes, and see which really work best. Oh, and an optimized set of standard brakes (heavy cables, all reinforcements, stiffeners and braces, skimmed-to-fit-new linings, and maybe Lightning plates) as a control.

I think both of the new brakes setups have a problem all too common with Vincent parts. They are made in tiny batches, so they are expensive, which means not many sell, which means they only get made in tiny batches. I find it hard bring myself to spend "real" money on any mod when I know I will have to take it off in another 5 or 10 years, and reinstall the old parts if I can find them, so I can sell the machine for $37,000,000 on ebay.

Buying all the stock brake parts,comes to approx the same money as the 4LS Brakes.
When crashing in some one, because of bad brakes, that will be expensive!!!:eek:
 

rapcom

Well Known and Active Website User
VOC Member
Scary logic and false economy

" I find it hard bring myself to spend "real" money on any mod when I know I will have to take it off in another 5 or 10 years, and reinstall the old parts if I can find them, so I can sell the machine for $37,000,000 on ebay"

I do hope this comment was meant wholly as a joke.
50 years ago, the Vincent had good brakes that were well able to keep you out of trouble. The other traffic on the road also had drum brakes, skinny tyres, and was more considerate.
Today there is far more traffic, driven by thoughtless and inconsiderate drivers chatting on their mobile phones, listening to their music players, and virtually all of them will have disc brakes, and ABS, and better tyres, and you will have NO chance of outbraking them with feeble standard drum brakes.
Anything you can do to improve matters in your favour has to be money and time well spent, whether it be by fitting heavyweight cables and ribbed drums, or TLS conversions, or 8" brakes, or discs.
It is no consolation being able to shout "It's original!" as you slide into the back of a truck.
 

vincenttwin

Well Known and Active Website User
VOC Member
I have a set of 8" ones on order for my B ,the maker has to mod them a little bit as my B has bramptons , if you want your Vincent to look right stay with the old brakes, but do not ride it, Sooner or later you will not be able to stop and it will hurt.
pete
 

timetraveller

Well Known and Active Website User
VOC Member
As a person who once had his back wheel in the air during an emergency stop and recalling that once Vincent brakes were regarded as the 'best' I think that many people have to sort out their brakes set up first before doing serious mods. Having said that my brakes are not standard but are Shadow drums, Electron plates , extra thick twin cables and have shoes where the hollows are welded up, machined to the same curve as the rest of the shoes and then have one and two thirds linings glued and riveted to each shoe. There is still no point pretending that they are as good as disks, twin leading shoe or, probably, the 8" items but I have yet to try a set of those. Just to interject some facts in to the matter I just weighed a standard 7" Shadow drum and one of my Electron plates complete with the shoes, linings etc. One drum 3lb 15 oz (1.79 kg), one brake plate 2 lbs 10 oz (1.18 kg). My understanding is that the ratio of the weight between the full complement of 8" items and the full complement of standard (i.e. with steel brake plate) 7" items is 1.42 : 1. Whatever you have, happy riding and stopping.
 

Ian Savage

Well Known and Active Website User
VOC Member
I agree that first job is to set up the standard brakes correctly.

At the Austrian rally I lent my B twin to someone to collect an inner tube and he said how good the brakes were. When we put his wheel back in I could see why he commented his f/brake was adjusted all wrong I re-set and every time I saw him after that he was smiling.

That said I have got twin discs on my C tourer as I would nomally use it 2 up and loaded and I've have had a few heart stopping moments :eek: when the bike wouldn't stop with 'standard' set up at speed on motorways.
Ian
 

Alan J

Well Known and Active Website User
VOC Member
Brakes!!

If you must have the best in terms of stopping power, I agree with Mr. Savage!! saying that, I,m still riding around on very original brakes on my outfit!! Perhaps it's time I opened my wallet!! Ouch!!
 
R

robinlw

Guest
As Ian says (& so often true of the rest of the bike!) set the brakes up to best possible in standard form, i.e. per Jim Mathers' article in MPH earlier this year, before judging them. I was intrigued to find on Calle's highly enjoyable tour in Norway (Nov. MPH) that among our little group of disc braked Vins + a Laverda & a Ducati ducking & diving briskly down serious gradients that the Prof's Shadow drums were more than up to matching our braking. I asked him about them but he said only that BS ribbed drums were essential.
 

rwhitne2

Active Website User
VOC Member
Thank you one and all for the inputs. Received my set of 8" brakes from VOCSC 2 weels ago. Am looking forward but 2 ft new snow last night precludes all til May. Merry Christmas Mike W.
 

Tom Gaynor

Well Known and Active Website User
VOC Member
Twin leading shoe brakes lock on

Hi Juel. I bought mine (from PV) about a year ago. The short answer is "b*llsh*t". It's the sort of thinking that belongs to an era when bikes had ineffective front brakes and it was believed that application of a front brake would inevitably throw the rider over the bars. Yeah, right.
Nor has it ever happened on any of the 2ls brakes I've used on road or track. (Suzuki, Honda, 8" home-made Norton, 8" Manx Norton, all two shoe, 10" Kawasaki H1R, 9" Menani, and of course 7" Vincent, all 4-shoe. And a Seeley, a 9" four shoe sls brake, but with a clever little linkage to get more servo than sls provides.
2ls brakes certainly hit fast, but 1) that's what I wanted, a brake that works RIGHT NOW, not half a wheel rotation later, and 2) that's only ever been a problem at walking pace on gravel. It's a problem with discs too - at walking pace on gravel.
I don't understand why anyone would want single leading shoe brakes anyway. One shoe servos itself on, and the other shoe servos itself OFF. Where's the problem in having brakes that work? You can buy a 2ls replacement brake for virtually any classic bike originally fitted with an inadequate (but cheap to make) sls one, and VOC decides to market a one inch bigger sls one. Why isn't anyone marketing Norton, Triumph and BSA single leading shoe brakes an inch bigger? Because they're not as smart as us?


What is the truth about the rumor I have heard that Twin Leading Shoe Brakes can lock-on and spill you off? Just the facts 'mam.
 

ET43

Guest
8" brakes

For what it is worth, I have just thrown away my rear wheel japanese disc and fitted one of the new brakes there. TLS brakes are no good at holding a machine on a hill, ie, to stop the machine going backwards, especially an outfit, I use the sidecar brake and front brake for cornering, ( twin discs ) and the rear brake for holding the machine stationary and for gentle braking. In panic mode I can operate the sidecar and rear brake with my foot, the front discs with my hand and the right foot rubs the ground for extra resistance, although my foot does get blooming hot. Just joking! Hopefully I will be able to give a progress report in early spring. I must say that it does fill up a 15" rim well.
Cheers,
ET43
 

Tom Gaynor

Well Known and Active Website User
VOC Member
Brakes

So vital is the rear brake to stopping a solo from high speed, that in 15 seasons I've had to reline the 7" sls rear brake of my Norton as many as no times.
I agree about their (1ls brakes) use to prevent running backwards. I once pulled the nipple off a 2ls brake cable trying to prevent a solo rolling back down a ramp. That's because a 2ls brake has the servo on both shoes applying the brake going forward, but has both shoes servoing themselves off running backwards. Whereas (as aforementioned...) a 1ls has the servos in opposition (which shoe leads depends on direction of rotation, as eny fule noe), so works both ways equally. Depending on how much time you spend riding backwards it can be a good choice...
My Volvo has 1ls drums at the back for the handbrake, and one can feel them "set" when the car moves forward or backward an inch or so. (It has discs front and rear for stopping, as opposed to parking.)
 

bmetcalf

Well Known and Active Website User
VOC Member
8" Brakes

How about an update on your 8" brakes?

Whilst a lot of you appear to have spent the afternoon on your computers I have been fitting my 8" front brakes and then testing them. The initial impression is that I am very impressed :):).

Obviously I have not done any hard braking yet, but I now feel I have a brake that I can be confident with :):).
 

Albervin

Well Known and Active Website User
VOC Member
8" brakes & Bramptons

I have a set of 8" ones on order for my B ,the maker has to mod them a little bit as my B has bramptons , if you want your Vincent to look right stay with the old brakes, but do not ride it, Sooner or later you will not be able to stop and it will hurt.
pete
I would appreciate an update on your experiences with the new brakes. If you want you can send me a PM with all the good & bad bits.
 

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