April 27th, 2014, 07:11 PM | #1 |
dirty boy
Name: Joe
Location: Johnstown, PA
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Larger rotor with Brembo 4 pot caliper
So i finally got around to finishing my prototype mounting bracket for this setup.
As it mounted up today it is 100% functional but i will make some very very minute adjustments. Like moving one of the bolt holes 0.02" and decreasing thickness where caliper attaches by about 0.05" and that should give me a little bit more buffer space if it is ever needed. Doesn't look like much yet but, @Bigballsofpaint has agreed to CNC up a bracket for me. Once i get the first one back and verify that everything is as it should be if he chooses to and can, he could keep making them and it would be very easy for someone to replicate this set up. Buy used 4 pot brembo, make sure it has the further apart bolt spacing i think it is 65mm? whatever, look at pics and get the one that has them further apart. Buy larger Chinese rotor Here is pic of bracket and a link to the rotor on ebay. Only thing with rotor is contact the seller to try and verify what you get. There are a few sellers on Ebay. For the place i got mine the original ad said you get 2 rotors but i only got 1 and i got some mounting bracket with it that was useless. I contacted them about it and they said i got the right package and they would change their ad Rotor is Ara Shi 320mm, it looks very solid and well made but have not put it through paces yet sorry for bad pic, my cell phone camera is cracked and takes terrible pictures and i broke our digital camera yesterday http://www.ebay.com/itm/151239856301...84.m1497.l2649
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April 27th, 2014, 07:36 PM | #2 |
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good job getting it together and working. I don't know why but I just seem to like the look of the radial mount style better.
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April 27th, 2014, 07:39 PM | #3 |
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Dooooooooooooooood.
Fancy brakes + IRC front tire = |
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April 27th, 2014, 07:41 PM | #4 |
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April 28th, 2014, 04:20 AM | #5 |
dirty boy
Name: Joe
Location: Johnstown, PA
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MOTM - Apr '14
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it's on the list
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April 28th, 2014, 06:40 AM | #6 |
Fighting Texas Aggie '05
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April 28th, 2014, 06:41 AM | #7 |
Fighting Texas Aggie '05
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what has it cost you so far? Looks like a great project
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April 28th, 2014, 10:21 AM | #8 |
dirty boy
Name: Joe
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right now total money spent looks like this.
$80 for brembo caliper on ebay $50ish for new pads, can't remember exactly $160 for the rotor $20 for odd ball mounting bolts, banjo bolts & other things needed $35 after shipping for a plate of 1/2" 8x8 T6 6061 to make my prototype bracket (if cnc guy chooses to make brackets not sure how much he would charge) $345ish but really the rotor was the only pricey bit which is still pretty cheap and if it needs replaced anyway it would only be a bit more than buying new rotor and pads. $345 - cost of new rotor and brake pads puts you at $135 on top of normal costs for rotor + pads. Not to bad IMO
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April 28th, 2014, 10:51 AM | #9 |
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You still havent shot me the new dimensions yet
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April 28th, 2014, 12:01 PM | #10 |
Fighting Texas Aggie '05
Name: Neil
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Not bad at all
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April 28th, 2014, 12:40 PM | #11 |
dirty boy
Name: Joe
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you should have them in a few minutes, been double checking everything, then triple checking and I had to move one of the holes just a hair and it took me half a day to figure out the trig to accomplish it
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April 29th, 2014, 04:55 AM | #12 |
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April 29th, 2014, 04:59 AM | #13 |
dirty boy
Name: Joe
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well I don't remember any formulas as I never use that stuff in my line of work or when the particular laws can be used and I had to many variables for what I needed to figure out. So I had to figure out like 6 different things before I could get to the angles and sides I wanted to figure out plus i was only messing with it on my down time... but it did take me a while lol
It was a mess
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April 29th, 2014, 05:03 AM | #14 |
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looks like you're getting there. good job.
I like radial brakes too. |
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April 29th, 2014, 05:43 AM | #15 |
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Oh... Just use wikipedia when you have questions on math/analysis type stuff. All the stuff I've learned so far in school is, in some form, on wikipedia. It's great review.
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April 29th, 2014, 05:47 AM | #16 |
dirty boy
Name: Joe
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i don't really have a preference as far as mounting type
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April 29th, 2014, 06:05 AM | #17 |
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If I bought a new sport bike I would want radial brakes. The 250 does fine with what it has....especially now that I have a full floating setup.
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April 29th, 2014, 06:24 AM | #18 |
Fast-Guy wannabe
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I guess its not as much the fact that its radial mounted as that fact that I like the beefier boxier look of the radial style caliper itself.
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April 30th, 2014, 08:40 AM | #19 |
dirty boy
Name: Joe
Location: Johnstown, PA
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Some computer drawings of bracket @Bigballsofpaint sent me
Just hope all my measurements were perfect Not to much wiggle room here
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April 30th, 2014, 08:58 AM | #20 |
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You can make a killing if its a better price then this
http://www.ebay.com/itm/KAWASAKI-NIN...-/271218973225
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April 30th, 2014, 09:14 AM | #21 |
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Let me see what the machine time is before i come up with any of that. I let Joe know ill be ordering the material tomorrow, hopefully i dont scrap much since im only ordering enough for 3.
Edit: It will most certainly be less than that since im not trying to make a business out of this, i doubt my job would appreciate that. Just trying to do a few cool things here and there to help people out if i can. |
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April 30th, 2014, 09:19 AM | #22 | |
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Quote:
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Hey Unregistered never go faster than your brakes can be applied... |
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April 30th, 2014, 09:23 AM | #23 |
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If you go back to my original post im not here to do the thinking. Give me some measurements and ill see what i can come up with to help some fellow members out.
Another member wanted clip ons for his pregen - but i didnt like the dimensions he gave me and what he wanted. I still drew up a model that he liked, but i need to go get real measurements off my friends pre gen so i havent touched it in a while. Joe gave me some pretty solid numbers since he has made a prototype, if one were to do the same with a pregren, i wouldnt mind doing one for that as well. |
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April 30th, 2014, 09:39 AM | #24 | |
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Quote:
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Hey Unregistered never go faster than your brakes can be applied... |
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April 30th, 2014, 09:44 AM | #25 | |
dirty boy
Name: Joe
Location: Johnstown, PA
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MOTM - Apr '14
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Quote:
That bracket is also for the 40mm spacing caliper and I think a stock sized rotor. The caliper I have is 65mm...ish and the rotor is larger I think place I bought it from says 320mm but I should measure to confirm. The rotor I bought actually came with some adapter bracket but it was clearly not designed for rotor it came with or designed very poorly. The hole spacing was right for the brembo 65mm caliper but the angles/distance form center rotor was all screwy and would have provided little to no bite. I didn't even know the rotor I bought was supposed to come with the bracket? I was surprised when I found it and excited that it might work.... clearly it did not. I do like how that ebay bracket is designed. I guess that is an option I didn't consider and would be more plug and play than my design but not by much. Would look a little bit cleaner as well as nothing is bolting on top of fork caliper mount, it would be under just like the OEM.
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April 30th, 2014, 09:51 AM | #26 | |
dirty boy
Name: Joe
Location: Johnstown, PA
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Quote:
get some parts, caliper & rotor if going larger, get the materials to make a bracket. I used a piece of T6 I had laying around and make some prototype quick with some rough measurements see how bad or good it is, then make some more thoughtout changes to the 1st gen prototype and you should be able to get a final one by the 3rd gen. If you have a little bit of time to devote and decent tools it could be done pretty quickly. Drill press, band saw, bench grinder are key. I had none of thee above Cordless drill, hacksaw, a round file, and a flat file and lots of elbow grease
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I love the smell of burning pre-mix in the morning I don't think I'm a lot dumber than you thought that I think that I thought I was once. |
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May 1st, 2014, 12:14 AM | #27 | |
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Name: mania
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Quote:
I think like your pic & this one shows the radial mount does seem to orient the caliper well on the rotor for max footprint with good leverage. RSV racing here is making the brackets Like this I am also running the 320mm rotor but have not upgraded caliper yet just HH pads & SS lines |
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May 1st, 2014, 05:53 AM | #28 |
dirty boy
Name: Joe
Location: Johnstown, PA
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MOTM - Apr '14
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I wouldn't mind a radial caliper especially if I could find a plug and play bracket but the brembo radial calipers are still a bit pricey for a budget build. I got the caliper I have for like $70-$80
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May 1st, 2014, 06:28 AM | #29 |
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I have a tokiko radial caliper on the way from a 05-06 gixxer1000 and a radial master cylinder 16x18... Will be installing it next month once I actually get it...
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May 1st, 2014, 06:41 AM | #30 |
Fighting Texas Aggie '05
Name: Neil
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Man that looks great, keep us posted on updates. Very cool.
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May 1st, 2014, 08:50 AM | #31 | |
Board Member
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Quote:
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May 1st, 2014, 09:22 AM | #32 |
dirty boy
Name: Joe
Location: Johnstown, PA
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^ this
I have found some brembo radial calipers as cheap as $200 a pair used but that was the lowest by far and more commonly $300/pair. It is hard to find them individual but you could always try and sell the left over one to make some cash back. Figure you would get charged at least $100 for the mounting bracket, maybe more, add in some odds and ends and it would be around $450 just for the hardware not including rotor, maybe you manage to sell the left caliper for $100 and net $80 you are still at $370 ish Not terrible I guess but lots of assumptions.
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May 1st, 2014, 09:33 AM | #33 | |
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May 1st, 2014, 09:38 AM | #34 |
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Hey Joe, would you want me to mock up a design that uses the M8 holes threaded under the fork instead of using bolts like you are? All i have to do is measure how this the piece is on the fork. Since your design goes on the top, the other goes along the bottom, i should be able to just drop those 2 holes down to sit under the fork. Im pretty sure we have some M8 taps around.
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May 1st, 2014, 10:17 AM | #35 | |
dirty boy
Name: Joe
Location: Johnstown, PA
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MOTM - Apr '14
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Quote:
If you treat the Caliper side with the thicker section as a stationary Zero point, you could probably just measure the thickness of the OEM caliper mount where holes are that is fixed to the right fork and then subtract that + the thickness of the bracket and drop it that far and that would get you to the right spot while maintaining the correct position of the caliper in the Z plane. When you do it this way, you would also be able to lose the thicker section on the caliper holes as it would not be needed anymore and just make that whole level of the bracket 1/4" from the previous lower point where bracket actual met caliper. It might change some of the clearances with the pots on the caliper but I think we gave ourselves enough room there and should be fine. Only other thing that would need to be addressed is that the new section that is going to mount to the fork mount on the inside will have to be 0.20" thick, 0.25" I think is just a hair to thick and might contact the buttons of the larger rotor. Let me know if you are following me, I can give more info in a PM and even do a quick sketch since the hole positions will not change in relation to each other in
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May 1st, 2014, 10:19 AM | #36 | |
dirty boy
Name: Joe
Location: Johnstown, PA
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Quote:
For the caliper like I have, ebay search ducati 748 brake caliper. You can find used refurbished for like $300 I think for a pair, or just get used non refurbished for $140/pair For the radials brembo's ebay search GSXR brembo caliper and it should bring up some used radial brembo cal's for more recent model GSXR's You won't find anything cheap new.
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May 1st, 2014, 10:29 AM | #37 | |
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May 1st, 2014, 10:37 AM | #38 | |
dirty boy
Name: Joe
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Quote:
If you follow what I wrote in that last post about making alterations it would be pretty easy I think. I could get some measurements with in a few days for everything. here is link to ebay bracket. It would work same way but just be different size and hole spacing different. I think this would be ideal, I just didn't think of it until I saw this adapter. I would never be able to make a prototype like this with the tools I have so I never considered it an option http://www.ebay.com/itm/KAWASAKI-NIN...235105&vxp=mtr
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May 1st, 2014, 12:43 PM | #39 | |
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Name: Neil
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May 1st, 2014, 12:56 PM | #40 |
dirty boy
Name: Joe
Location: Johnstown, PA
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^ dunno
think my caliper is off a 01 748. It has 65mm spacing between bolts and has 2 brake pads, just one on each side? but it did have dual rotors/calipers on that bike?
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