Bonneville America Forums Forums Technical Forums Performance Mods Brake upgrade 3 piston caliper

this is work in progress,caliper arrived yesterday and I need to fit it properly.Just bought new pads for it.picture is just a mock up as you all see break line is not connected yet.

Looks good!

brake line fitted,bleeded, left till tomorrow with lever tightened

whats that off of?

Honda CBF1000

Good job, please be careful not to grab a big handful of lever.

shmexxy. i may need to change my pantalones.

All you need now is one on the opposite side to match

I am very interested in what all had to be done to make this work.

need to find caliper and swap this is a bolt on upgrade, only thing is it's stretching speedo cable a bit

well the little searching i just did cbf1000 is not in america I need to find out what elts that caliber was on.

Check the 2012 CBR250 with ABS. I saw from the pics in a bike
mag that it is a 3-piston caliper.

You have to get a European '08 Honda. The American bike have radial brakes and will not fit.
http://www.ebay.co.uk/itm/HONDA-HORNET-0...id=354813365284

read about here:

http://www.triumphrat.net/twins-technical-talk/190917-three-piston-caliper-revisited.html

I looked up the parts on Bike Bandit and the part numbers are the same for our bikes and the Bonnie's..at least for my 2006 speedmaster.

might powdercoat it black next winter and working on slightly longer speedo cable

Looks good. Is that the a Thruxton disc, is it same size as America ?

It is an EBC floating rotor:

http://www.fasteddysports.com/?page_id=3&product_id=172

manage to ride today fist time since caliper is on ,with new caliper and new pads I made about 50 miles trip with plenty of braking ...can say that is more responcive than stock and less pressure needed on lever

now with longer speedo cable!!!!!!!!!!!!!!!

Where did you get the longer speedo cable? Do you need specific pads for the caliper or are they the same fit as the Triumph?

done some research and found a company that makes custom speedo and throttle cables(if needed) this caliper is different and pads too I'm using FA388HH EBC and after about 500 miles with this set up can say that it was worth every penny

Thanks Grz...

I am looking for the 3-pot left side caliper. Anyone know if they were put on CBRs in Australia? Demand for this mod seems to be driving the second hand price up in the UK and EU. I may have to go to the Berringer 4 pot just because of availability issues.

U got full inbox....rhe one you sent a picture is wrong its 4 pistons radial caliper.....for that kind of money I can get you one delivered in post tomorrow

I think I found one in the Netherlands. Check your inbox.

Thanks for checking the on in Australia.

Thats the one but is gone now

That's because I got it!

I thought I better be quick. I think many guys from Triumphrat are looking for these. It looked the same as yours even though the build year was 2009. The colour may not need painting. Hopefully it is in good condition.

Lucky you got the rare one in BLACK!!!!!!! Those calipers were used by Honda since 2007 now plenty of models have them.....been to big Honda
dealership and had a look
Don't forget to show some pictures after install!!!!!!!

My black 3-pot Nissin caliper (all the way from the Netherlands) is now fitted and works great. Just finishing bedding in and it feels like a huge improvement over stock.

My stock speedo cable fits perfectly because I have 1" spacers on the speedo which lower it by that much. So a very easy direct bolt on.

The bonus in getting the twin front Honda calipers is that I got two sets of near new Nissin pads with it (saving me about $80) plus I have spare components from the right caliper if I ever need them. I am very happy with this mod. I imagine it makes the America braking nearly as good as the Speedmaster (guessing because I haven't ridden a Speedy).

Thanks for your help Grz.

Fitted one of Grzegor's calliper conversions.
Bloody great on the America.
Need something for the rear calliper now, it's crap

I saw your Nissin caliper on your bike in your photos. Nice. Did you paint it or did you also manage to find the rare black ones?

Quote:

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Need something for the rear calliper now, it's crap

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Personally I don't want to upgrade the rear because it would be more likely to lock up. In an enthusiastic stop I think I would tend to use more rear brake than the recommended 20-30% rear and 70-80% front. Probably more like 50-50% in panic mode. So I figure the softer rear will help compensate. I don't use sintered pads in the rear for the same reason. Organic pads aren't as effective especially in the wet and that's where I especially don't want the rear locking up. Of course this rationale doesn't apply for riders who keep cool under pressure and properly control their braking.

I think you have to look at the additional power up front. As you ratchet the front end down with more power your weight is transferred forward. The bigger caliper on the front will make the rear be lighter faster. With less sprung and unsprung weight on the rear the odds of locking the rear wheel will increase anyhow when the coefficient of friction is reduced due to less contact on the roadway.

Additionally the rake of our bikes prevent a stoppie so the weight of the bike is transferred from the rear forward in the form of momentum. With the stronger caliper it could be possible to stop the front wheel from spinning. That could be a really bad thing.

I guess I am just saying to please be careful when messing with the physical principles of braking. The engineers did the brakes as a total package for the weight, sprung and unsprung, momentum, rake, and tire configuration.

I am also thinking that a braided line would be a must on this caliper like in one of the pics.

Now you have my SWAG method of looking at it.
SWAG= Scientific Wild Assed Guess.

I agree that the rear will get lighter faster. Hence my rationale for not upgrading the rear and staying with organic pads on the rear. But I question whether the 3-piston caliper on an America would be more effective than a Speedy with 2 x 2-piston calipers and rotors. So I suspect I am still within the engineered boundaries for our bikes. But I've been wrong before (as recently as yesterday in another thread ). BTW our stock brakelines are braided.

The practical application is for me to practice getting used to moderating my new-found stop-ability so as not to lock-up the front . It doesn't feel very snatchy and still has a progressive application - just firmer and stronger than stock. But I haven't tried emergency stops yet.

wait till your pads will bed in....I've done on mine about 1000 miles since 3 piston caliper was fitted can't be more happy with brakes now!!!!!!!!!

anyone interested? have a look in classified section

Got my new caliper last night, as soon as I get it painted up and grab some pads for it, it's going on. Also gonna get a floating rotor from the fast one. Excited!

You'll be very happy with that upgrade. Be careful not to lock the front. It's easy to do. Don't ask me how I know.

My front brakes have been so soft the past few years that it's going to be like riding one of those new America's! Can't recall the last time my front brake fluid was even flushed... maybe in '08

"THBC" ??