Ducati Monster Forum

Moto Board => Tech => Topic started by: TAftonomos on January 30, 2009, 08:37:41 AM

Title: boring bottom triple to 56mm?
Post by: TAftonomos on January 30, 2009, 08:37:41 AM
Any machinists of engineers out there?  I need a 56mm bottom triple, and I'd rather not spend mega $$$ going to custom triples, but I will if I have to. [laugh]

Forks are 50/56, and perfect for what I want to do (price wise as well)  [thumbsup]
Title: Re: boring bottom triple to 56mm?
Post by: foggy123 on January 30, 2009, 08:46:19 AM
Quote from: TAftonomos on January 30, 2009, 08:37:41 AM
Any machinists of engineers out there?  I need a 56mm bottom triple, and I'd rather not spend mega $$$ going to custom triples, but I will if I have to. [laugh]

Forks are 50/56, and perfect for what I want to do (price wise as well)  [thumbsup]
I've done it on my bike.  Just take it to a local machine shop and they should be able to do it. 

Be advised that many people will tell you not to do it.  Mines be good to go for 3 years or so.
Title: Re: boring bottom triple to 56mm?
Post by: Oldfisti on January 30, 2009, 10:38:41 AM
Quote from: foggy123 on January 30, 2009, 08:46:19 AM
I've done it on my bike.  Just take it to a local machine shop and they should be able to do it. 

Be advised that many people will tell you not to do it.  Mines be good to go for 3 years or so.


Yes. Ignore the naysayers. The bottom triple is already 54mm. Boring it out by 2mm will not comprimise a thing.

Bacardi and cola. Do it. Do it.
Title: Re: boring bottom triple to 56mm?
Post by: TAftonomos on January 30, 2009, 12:04:52 PM
3 ways to go, all are retarded overkill for a street bike.

1st way, 07' gsxr forks w/25mm ohlins cartridges, $1200 ish w/calipers and lines

2nd way, Ohlins R&T forks w/bored lower triple, $1700 w/calipers/lines

3rd way, Ohlins R&T forks w/speedymoto billet triples, $2200 (ouch!)

I'm leaning towards number one, I can keep my triple, won't have to depend on a machine shop, and will spend 500-1000 less.  25mm carts are the same thing that are in the R&T forks as well, although the full on bling bling bonus isn't there.......
Title: Re: boring bottom triple to 56mm?
Post by: foggy123 on January 30, 2009, 01:52:51 PM
As far as I know speedymoto won't/can't do 56mm triples so might not be an option. 

Resale is better on real Ohlins vs kitted ohlins otherwise they ride the same to me. 
Title: Re: boring bottom triple to 56mm?
Post by: monsta on January 30, 2009, 03:30:18 PM
I bored mine to fit the ohlins.
took about an hour to do, its not a big job for the local machine shop...
Title: Re: boring bottom triple to 56mm?
Post by: TAftonomos on January 30, 2009, 04:12:04 PM
Quote from: foggy123 on January 30, 2009, 01:52:51 PM
As far as I know speedymoto won't/can't do 56mm triples so might not be an option. 

Resale is better on real Ohlins vs kitted ohlins otherwise they ride the same to me. 

speedy has both 53/56 (SBK) and a 50/54 (monster).  I was talking with them today about selling me a mix, 50 top, 56 bottom.  I could always get the SBK size (53/56) and just sleeve the top to fit. 

Both the price on the gsxr forks w/25mil kit (1K), or the full R&T (1500) are pretty darn good.....


You guys bored out the TOP triple though, correct?
Title: Re: boring bottom triple to 56mm?
Post by: booger on January 30, 2009, 04:17:54 PM
Quote from: TAftonomos on January 30, 2009, 12:04:52 PM

3rd way, Ohlins R&T forks w/speedymoto billet triples, $2200 (ouch!)


Ohlins R&T forks are ~$2675, top & bottom Speedymotos are ~$1200, per Motowheels
Where are you getting your prices?

Title: Re: boring bottom triple to 56mm?
Post by: TAftonomos on January 30, 2009, 05:40:44 PM
Friends in the biz  [thumbsup]
Title: Re: boring bottom triple to 56mm?
Post by: monsta on January 30, 2009, 06:36:03 PM
Quote from: TAftonomos on January 30, 2009, 04:12:04 PM
You guys bored out the TOP triple though, correct?

I did top and bottom, but the bottom is an aftermarket billet one.
Title: Re: boring bottom triple to 56mm?
Post by: booger on January 31, 2009, 03:03:57 AM
Quote from: TAftonomos on January 30, 2009, 05:40:44 PM
Friends in the biz  [thumbsup]

then dude I'd wait a while longer and throw a few more cookies in the jar to budget in the Ohlins/Speedymoto retarded overkill front end scenario
wish I was friends with your friends
no way I'd put Tokicos on a Ducati, I'd lose sleep
Title: Re: boring bottom triple to 56mm?
Post by: TAftonomos on January 31, 2009, 07:11:30 AM
LOL, brembo 108mm calipers are $2400 to start, no way I'd spend that kind of coin on brakes, street or track. [laugh]  Those tokico radials are good enough to haul down a 180mph 400lb gsxr1K, they will surely work on a monster  [thumbsup]

Not sure when the calipers came into the equation though, was always about the triples
Title: Re: boring bottom triple to 56mm?
Post by: foggy123 on January 31, 2009, 08:40:30 AM
Sbk lower has different offset than monster so be careful mixing and matching.
You can get Brembo hp calipers on ebay for ~1k in 108mm spacing.  Less for the monobloc cast one.  Billet monoblocs are in a different price league. 
Title: Re: boring bottom triple to 56mm?
Post by: TAftonomos on January 31, 2009, 10:05:48 AM
Can get the tokico's for $50, shave and powdercoat them.  Maybe later pick up a set of the HP's..... didn't think you could get them for that.

FIgured out that SBK triples won't work, even with a custom stem. Problem is we are going the wrong way on the offset....33mm is SBK offset, 30 is monster....if moving it we need to reduce it, not increase it, so the SBK triples are out.  I could find a set of the 27mm triples for SBK, and then have a custom stem made, but I'm right back at 1K or more after all that, in which case the SM or custom triples would be easier/less hassle.

Of course, shelving the entire thing, and getting some 750 forks with the ohlins carts in them already would save me the trouble of all of this  [laugh]
Title: Re: boring bottom triple to 56mm?
Post by: OverCaffeinated on January 31, 2009, 11:27:24 AM
Quote from: TAftonomos on January 30, 2009, 12:04:52 PM
3 ways to go, all are retarded overkill for a street bike.

1st way, 07' gsxr forks w/25mm ohlins cartridges, $1200 ish w/calipers and lines

2nd way, Ohlins R&T forks w/bored lower triple, $1700 w/calipers/lines

3rd way, Ohlins R&T forks w/speedymoto billet triples, $2200 (ouch!)

I'm leaning towards number one, I can keep my triple, won't have to depend on a machine shop, and will spend 500-1000 less.  25mm carts are the same thing that are in the R&T forks as well, although the full on bling bling bonus isn't there.......


4th most retardedness overkill option, Marzocchi RAC 50

(http://farm4.static.flickr.com/3046/2775869024_4831e68145_m.jpg)
Title: Re: boring bottom triple to 56mm?
Post by: Norm on January 31, 2009, 11:50:36 AM
I've bored lot's of upper monster triples without any problems, but only did a SBK bottom once for someone. I wasn't very comforable with it but it has held up fine, although I doubt I'd do another one. The top triple has very little stress on it, the bottom one has A LOT of stress. Whenever pratical, I like to see them beefier than stock.
Title: Re: boring bottom triple to 56mm?
Post by: TAftonomos on January 31, 2009, 11:51:48 AM
Quote from: OverCaffeinated on January 31, 2009, 11:27:24 AM

4th most retardedness overkill option, Marzocchi RAC 50

(http://farm4.static.flickr.com/3046/2775869024_4831e68145_m.jpg)
lol


Final can't top it uber retarded stupified gumby gold option:

(http://www.ducati.ms/forums/attachment.php?attachmentid=42447&d=1232670350)
Title: Re: boring bottom triple to 56mm?
Post by: OverCaffeinated on January 31, 2009, 12:19:08 PM
^Holy crap!

The plus to the Marzocchi set is that you can get a complete set of triples and stem the will just bolt to your bike.
Title: Re: boring bottom triple to 56mm?
Post by: booger on January 31, 2009, 11:25:51 PM
Quote from: OverCaffeinated on January 31, 2009, 11:27:24 AM

4th most retardedness overkill option, Marzocchi RAC 50

(http://farm4.static.flickr.com/3046/2775869024_4831e68145_m.jpg)

Those look interesting, there used to be a 43mm version of that available. I wonder how good they are vs Ohlins, vis a vis the shitty nature of the stock Monster Marzocchis. In the mountain bike world, Manitou or Rock Shox were always better than the best Marzocchis.
TAft, I was assuming you had to use the Tokicos if you did the GSX-R fork swap. Didn't stop to think that maybe you could get Brembos for them. I know that Tokicos are damn good brakes for sure, and the pots look cool to boot, but for my part if I had your bike I would have this OC need to keep Brembos on it. Oh I know, Beringer six pots!
I have had this aching need to get a killer front end for my bike since I can feel the cavitation when riding and the handling's sloppy, but I can't see spending the kind of dough one needs to spend for it. In my view the upgrade is justified, I just can't go all out on full Ohlins for this bike. Used adjustable Monster forks are sparse, but SBK forks are plentiful. So you are saying that an SBK fork swap won't work on a Monster? I'm thinking some 999 TiN Showas and a Speedy 53 Monster top and bottom. What else do I need for an S2R? Maybe I should just get a new bike. But I like this one.
Title: Re: boring bottom triple to 56mm?
Post by: Norm on February 01, 2009, 06:35:50 AM
All you need to do in order to fit 9*6 SBK forks to a monster is to bore the upper triple and shim the lower. It's easy to do and gives you an improved fork and a platform for even bigger improvements.
Title: Re: boring bottom triple to 56mm?
Post by: TAftonomos on February 01, 2009, 07:02:51 AM
Quote from: bergdoerfer on January 31, 2009, 11:25:51 PM
Those look interesting, there used to be a 43mm version of that available. I wonder how good they are vs Ohlins, vis a vis the shitty nature of the stock Monster Marzocchis. In the mountain bike world, Manitou or Rock Shox were always better than the best Marzocchis.
TAft, I was assuming you had to use the Tokicos if you did the GSX-R fork swap. Didn't stop to think that maybe you could get Brembos for them. I know that Tokicos are damn good brakes for sure, and the pots look cool to boot, but for my part if I had your bike I would have this OC need to keep Brembos on it. Oh I know, Beringer six pots!
I have had this aching need to get a killer front end for my bike since I can feel the cavitation when riding and the handling's sloppy, but I can't see spending the kind of dough one needs to spend for it. In my view the upgrade is justified, I just can't go all out on full Ohlins for this bike. Used adjustable Monster forks are sparse, but SBK forks are plentiful. So you are saying that an SBK fork swap won't work on a Monster? I'm thinking some 999 TiN Showas and a Speedy 53 Monster top and bottom. What else do I need for an S2R? Maybe I should just get a new bike. But I like this one.

I've already got radial brakes, so the only superbike fork swap I could/can do would be SBK ohlins.  These are all 53/56mm forks, and would be the ideal/easy way.  Of course, I sold my ohlins front end ages ago when I promised myself I wouldn't be messing with the monster very much.  I could do a set of SBK showas, and they buy the radial mount lowers for another GRAND...not.

I've got 2 choices really.  Ohlins R&T forks, which measure 50/56, and will need custom spacers to work, or go with a gsxr front end with the 25mm ohlins stuff already in it.  Either way I'll need custom spacers, but for the R&T's I will need to get a new triple (or at least a lower).
Title: Re: boring bottom triple to 56mm?
Post by: foggy123 on February 01, 2009, 09:29:51 AM
Quote from: TAftonomos on February 01, 2009, 07:02:51 AM


I've got 2 choices really.  Ohlins R&T forks, which measure 50/56, and will need custom spacers to work, or go with a gsxr front end with the 25mm ohlins stuff already in it.  Either way I'll need custom spacers, but for the R&T's I will need to get a new triple (or at least a lower).

Or you could find me a good deal on some Marz forks and triples and buy my setup. [drink]
Title: Re: boring bottom triple to 56mm?
Post by: TAftonomos on February 01, 2009, 11:42:32 AM
just curious, but what setup do you have?
Title: Re: boring bottom triple to 56mm?
Post by: foggy123 on February 01, 2009, 01:04:13 PM
Quote from: TAftonomos on February 01, 2009, 11:42:32 AM
just curious, but what setup do you have?
53/56 sbk ohlins with bored lower, 53mm speedy top, CC radial adapters.

(http://www.speedzilla.com/forums/photopost/watermark.php?file=34&size=1)
Title: Re: boring bottom triple to 56mm?
Post by: Roscoe on February 01, 2009, 01:19:28 PM
Ahhh... Foggy's foggy. That front end is the bee's knees.  [wine]
Title: Re: boring bottom triple to 56mm?
Post by: TAftonomos on February 01, 2009, 01:51:39 PM
Quote from: foggy123 on February 01, 2009, 01:04:13 PM
53/56 sbk ohlins with bored lower, 53mm speedy top, CC radial adapters.

(http://www.speedzilla.com/forums/photopost/watermark.php?file=34&size=1)

Nice rotors you've got there  [thumbsup].

I don't deal with anyone that can get a deal on that marz stuff :(

It's a stock bored lower ehh?
Title: Re: boring bottom triple to 56mm?
Post by: foggy123 on February 01, 2009, 02:20:27 PM
Quote from: Roscoe on February 01, 2009, 01:19:28 PM
Ahhh... Foggy's foggy. That front end is the bee's knees.  [wine]
Actually this is a little better.  (http://www.speedzilla.com/forums/photopost/watermark.php?file=975&size=1)

Stock bored triple for last 3 years.