rear caliper failure.

[Guest SantaFeRider]

How many miles did you have on the pads and when were they brakes last bled?

I am curious, because it may give a clue as to what caused the failure.

Certainly one pad is worn down, but that could have happened on just one or just a few rides, if the piston was sticking.

I don't know what a thin foggy appearance on the rotor indicates.

 

 

the motorcycle has currently 4,000 miles

 

Brake service was done at 1,200 miles, when I bought it, not because of mileage but because of the time the bike had been unused.

 

I live in a very dry area where a 2 year fluid life is not uncommon.

[dlaing]

Yah, so not very likely the pads should have worn that quickly.

Mine last about 10,000 to 15,000 of mostly front brake only use.

My money is on sticky piston/seal relationship in the caliper.

But of course you should check your master, too.

 

I am not interested in salvaging the caliper, since it's a discontinued piece and no rebuilds are available for it.

Seems wise to me.

I would not sell that caliper even to my worst enemy.

[guzzijack]

39659000 seals kit for F05 caliper, V50/V65, rear caliper 1100 Sport/Centauro/Daytona/V11 Sport $18.95

 

http://www.mgcycle.com/calipersandpads.html

 

Nope, that doesn't do it.

 

Look at the size of the 'dust seals' they might fit the V50 FO5 caliper but there is no way it is the correct seal kit for the F32B Brembo Goldline caliper on the spine frames. Maybe this is where the erroneous claims that there is a correct seal kit available comes from?

 

GJ

[Guest ratchethack]

Well, I haven't removed and measured both sets of pucks with a micrometer, but it sure looks like the same caliper to me. I've owned 3 V50s and 2 spine frames...If it's of interest to you, why not contact MG Cycle yourself and discuss it with them. I'm sure they'd be glad to speak to you about it.

FYI - the considerable distinctions between the Brembo P32B series calipers such as on the V11 Guzzi rear brakes and Brembo F05 calipers (which are not) are well illustrated here, along with the parts breakdown schedules directly from Brembo:

 

http://www.tawvehicle.com/brembo_calipers.htm

 

As you can see, the P32B and F05 calipers use entirely different seals.

[Guest ratchethack]

. . .it is of NO interest to me as I have had NO brake problems in 20 years of continuous street riding. . .

Your lack of interest is all well and good, Kevin. But I reckon it IS of interest to SFRider, who started this thread. He has a considerable problem here. Others reading this may well be interested in following this, lest it happen to them. I imagine anyone so inclined would also appreciate accurate information.

 

Mistakes will be made. I made one earlier in this thread and corrected it because I'm interested and I b'lieve I owe getting it right to the best of my ability to those reading who're likewise interested. But if you're not interested and don't care, why post at all?

 

BTW -- there are many hereabouts, myself included, with more than double your years of riding, who generally appreciate accurate information pertinent to the topic at hand, regardless of topic.

[dlaing]

As you can see, the P32B and F05 calipers use entirely different seals.

I only see different part numbers.

We need accurate information!

 

These are all for Brembo 32mm

 

120.2799.10 F05

120.2799.30 P32B

120.2799.70 F04

120.2799.40 P432A

120.2799.90 P432C

 

Put the wrong seal in and you might run into trouble, but then again maybe some are inter-changeable.

I am not sure why anyone thinks the 120.2799.30 won't work.

Did I miss the post?

[Guest ratchethack]

I have more than a lick of sense and apparently know how to operate, maintain, and store a roadgoing motorcycle.

Uh, Kevin. You may well have more than a lick of sense, my friend, but your reading comprehension and/or attention span could evidently stand some improvement here. No need to get your panties in a twist.

If this problem was mine the situation would be otherwise.

If this problem were yours, you might well have paid better attention to what you were responding to.

 

May I suggest you take a little breather now and read this thread more carefully before you respond again, lest you again confuse wot is, without any question, critically important attention to ACCURACY here for pettiness??

Point well taken, David, but are we now engaged in a pissing match?

For starters, I'm not David. Next, if you're the object of a personal attack on this Forum, you will generally be the recipient of some pretty sharp criticism, possibly along with name-calling, though I haven't seen any evidence of any of this in this thread, nor have I seen anyone here (with the possible exception of yourself) interested in a pissing match. On this Forum, thankfully this kind of behavior is a rarity.

 

Thankfully also, there is an attempt to get ACCURATE information out in this thread. As I noted above, SFRider has a problem and he's in a bit of a bind. Bad information is of no use to him here, and is potentially quite dangerous to him and to others. Others, including myself, are interested in a correct understanding of this for the purposes of not only helping him out, as a fellow rider in time of need, but for a "heads-up" awareness of the kind of thing we may be facing ourselves down the road at some point.

 

Now you've posted a suggestion for a kit for a different caliper than SFRider has. This is of no help to him or to anyone else here. No problem -- mistakes will be made. As I noted previously, I made a similar mistake myself in this thread. I was conscientious enough to post back here to identify my mistake, correct it, and provide further CORRECT information that I believe can be of value.

 

You've stated that this "is of NO interest to me as I have had NO brake problems in 20 years of continuous street riding...". I've attempted to bring to your attention that in all liklihood, all of this IS of particular interest to SFRider and some of the rest of us, myself included.

 

I'm sorry, but if you don't care enough about the thread you're posting to to read it more carefully before you post, and then make a statement that it's of "NO interest" to you when it's pointed out that you've provided inaccurate information, this attitude would be a pretty obvious indication of why you've provided incorrect, and potentially misleading information in the first place. I have no idea what lack of standards of accuracy you may be used to elsewhere, but you will be called on this kind of thing here, my friend. The Web is full of sloppy posts with bad information. Part of what makes this Forum stand out is that IMHO its level of credibility tends to be well above many others -- at least as far as sharing accurate information.

 

Now after you've carefully read this thread (assuming you will actually do so now, and that you don't have a reading comprehension problem -- there's at least one around here who has a chronic defficiency in this department) you'll no doubt pick up on the fact, starting in the first several posts, that the caliper you've suggested a kit for is the wrong caliper. No V11 has a F05 caliper on it. This has already been pointed out with links to illustrations that couldn't possibly be more clear.

 

Now if you'd made use of the links above, you'd have noticed photos of Brembo calipers on the same page so they can be compared, side-by-side as it were, including the rear caliper on V11's -- as mentioned many times above, it's the P32B caliper. Just to make sure you understand this now, Kevin, though this has already been explained several times above, this is NOT the same caliper as a F05 caliper. Again, as noted above many times, and again by Dave above, the Brembo component part numbers for each caliper (Brembo parts schedules are linked from the T.A.W. page) show DIFFERENT Brembo seals for each of these entirely distinctive calipers.

 

I sincerely hope this clears things up for you Kevin. No offense was intended.

[Guest ratchethack]

I am not sure why anyone thinks the 120.2799.30 won't work.

Did I miss the post?

Dave, at the link here (as previously linked above):

 

http://www.tawvehicle.com/brembo_P32B_P32F_P105_parts.htm

 

Brembo lists the 120.2799.30 seal as part of an OBSOLETED caliper, the P32B #20.4532.70 caliper.

 

THE PROBLEM HERE is not whether or not the 120.2799.30 seal will work. THE PROBLEM is that it's part of an OBSOLETED caliper. One would be tempted to hopefully think that these seals SHOULD still be available, wouldn't one? That is, unless one noticed that the REPLACEMENT caliper for this OBSOLETED caliper, listed as the P32B # 20.5185.10 caliper, lists seal "X-2". This is a part not supplied by Brembo.

 

Now I reckon Dan The Brake Man may have a comment or 2 about the liklihood of interchangeability between different seal part numbers for pistons with the same 32 dia... As for myself, I'd have enough doubt about the interchangeability thereof not to ever want to risk the effort of installing a pair on speculation alone -- let alone riding on brakes with seals of UNKNOWN applicability.

 

BAA, TJM, & YMMV

[guzzijack]

I've just come off of the 'phone after speaking directly with Ian E of IanE Racing

 

He has many years of dealing directly with Brembo and categorically states that there are NO - REPEAT NO - specific seal/refurb kits available for the Brembo P32B or other P32 Goldline series 'racing' style calipers from Brembo themselves. That is not to say that individual items from other seal kits 'may' fit and someone with an intimate knowledge of Brembo calipers and components might be able to pick and choose the correct items.

 

The reason he gives for this is that 1) the cost of the calipers themselves, including a set of pads!, are comparatively low e.g. £40 or so here in the UK and; 2) there could be adverse publicity for Brembo if someone services a caliper incorrectly and subsequently screws up - therefore remove the ability to foul up and you don't have a problem, (for Brembo that is!).

 

I'm glad that the poster a few messages back hasn't had a problem with his brakes but it's no reason for smugness. Others, myself included as has been documented on the linked threads, have experienced failures for a number of unrelated reasons - some not down to our own endevours even - so trying to get the correct information 'out there' is, I would suggest, a reasonable goal.

 

GJ

[dlaing]

I saw David at the SoCal Campout at Point Mugu in early June, but did not speak with or get to know him very well. As far as I know, I was the sole out-of-state attendee who rode there.

Sorry, I don't talk to Tennistinos or whatever you call your selves

Just kidding!!!!!

Sorry my wife needed attention and I felt kinda shy so my talking was limited.

But some of those guys can talk your ear off and getting a word in edge wise is futile.

The rally could have been better with regard to social interaction.

Needed more events and introductions or something.

I know you will give the so-cal bunch more chances.

Maybe we can organize a candy assed liberal ride as there are at least three of us.

Dr. Know is an excellent fellow if you get to know him and he has no track marks on his arms, just on his leathers.

Even Ratchet, aka John Z., is swell in person...or at least that is my recollection from three meetings. He just gets ornery behind the keyboard.

I know on his death bed he'll be typing to us....soorryy dav an kehhhhhhv......................................................................................................................................................................................................................................................................................................

[dlaing]

I've never been to San Diego, maybe I'll do the rally/campout there in October if it is still happening. It's an easy day ride from Flagstaff.

 

(can't drink beer, tho', gives me migraines: white wine or liquors only--I dig fancy martinis, fume blanc, gin & tonic, unwooded Chardonnay)

No rally in San Diego this year.

http://www.socal-guzzi.com/Events.html

We have been doing monthly rides but this month two people showed, last month 5 people, but only me on Guzzi, and the month before that was a bad turnout, too.

LA has a much more dedicated group.

The monthly Ortega rides have a better turnout, although last time it was only two Guzzis, and no group ride.

Anyway, the So-Cal National Rally next June will be something to look forward to.

We can probably guarantee less rain than the 2007 National, but all bets are off on the chance of Earthquakes and "June Gloom"

[Guest ratchethack]

As for your inane, blathering, petty, tiresome posts, if they are directed at me, I suggest you tidy them up and get to the point, lest I completely disgregard them and you altogether. That prospect really does not worry me in the least. I hope that clears a few things up for you.

Well Kevin. Yes, I'd say you're making a few things quite a bit clearer here, indeed.

 

Let's see now...

 

You've promised to disregard my posts twice before -- once without qualification and once with qualification, and immediately (and repeatedly) broke both promises. The second time you did it, you broke both promises at at the same time. Now you've broken both promises again. That's three. Or is it four, since you broke both again at the same time?!

 

I'm losing count, and it hasn't even been two days.

 

Now as I've explained, Kevin, I'd be just as pleased as I can be (as well as grateful) to accept your promises as gifts -- either one -- with my most sincere thanks. But it seems you've repeatedly reneged on your promises nearly as fast as you've made them...

 

And NOW you seem to be threatening to make unqualified promise #1 over again unless I "tidy up" and "get to the point"?!

What exactly *are* you smoking Kevin? Mouthing off on the So-Cal board. Getting stuck in to Jean Marc for no reason I can make out and now this?????

 

Pete

Hey Pete -- You seem to have some familiarity with this guy. He seems to've left a wake of something or other behind him elsewhere. How nasty was it?? Is there, er, some kind of an established recognizable pattern of behavior unfolding HERE now?

. . .my mind is not well rested enough. I've learned the hard way that the mind is the most important organ. . .

Hmmmmmm. The mind is an organ -- learned this the hard way. . .

 

Yes, indeed. It's getting much clearer now...

 

Pete, d'you have any idea where he came from, and if so, got any idea how to get him to go back? There doesn't seem to be any appropriate, er, "rest facility" for wotever help this guy needs here. . .

[Guest SantaFeRider]

I have no idea how this thread went from a rear caliper failure to a failure ofhuman communication, but to those interested in the initial subject, let me inform you that I was able to purchase a new caliper from Yoyodyne for the modest sum of $ 91 freight included.

 

Thank you all for the good advice, and thanks for the amusing drama too

[Guest ratchethack]

Outstanding, SFRider. Congrat's on solving the problem. Good to know there's a viable source.

 

I take it you got Brembo's replacement P32B caliper, P/N 20.5185.10?

 

Did you also inquire about availability of rebuild kits and/or seals thru Yoyodyne?

 

I see they still list the seals: http://www.yoyodyneti.com/Category.aspx?CategoryID=3017

 

32mm Seal Set for P32B Brembo

$9.76

 

Please verify availability if possible.

 

TIA

[dlaing]

Outstanding, SFRider. Congrat's on solving the problem. Good to know there's a viable source.

 

I take it you got Brembo's replacement P32B caliper, P/N 20.5185.10?

 

Did you also inquire about availability of rebuild kits and/or seals thru Yoyodyne?

 

I see they still list the seals: http://www.yoyodyneti.com/Category.aspx?CategoryID=3017

 

32mm Seal Set for P32B Brembo

$9.76

 

Please verify availability if possible.

 

TIA

I'll betcha it is the 120.2799.30 seal, "part of an OBSOLETED caliper, the P32B #20.4532.70 caliper".

One of these days someone will spend the $9.76 ++ and find out(yoyo has $25minimum order).

I suppose asking won't hurt...

I suspect another viable source is Guzzitech.

Yes, I am spamming for them and I ride and eat lunch with Todd Eagan.

But it would be good to support Guzzi specialists over every other yoyo out there, if we have a choice.