HarleyTechTalk

Quote from: klammer76 on April 10, 2018, 05:46:34 PM

Quote from: PoorUB on April 10, 2018, 03:38:03 PM

Quote from: klammer76 on April 10, 2018, 03:03:29 PM
Going 4 on the rear, staying 5 on the front.

That would make me crazy. I would put the same type of fluid in both.

Why would it make you crazy? I have owned this bike since 2002 and will be the only owner. I know it inside and out. I'm certainly capable of knowing what I have and where, plus, I keep detailed notes on everything and denote any deviations that have been made in my SM. It's a non issue. The reason to keep the 5 in the front system is, it works fine and is not a danger to the paint should something unexpected happen.

Your bike, have fun!

If you like 5 in the front, I would run it in the rear too. I doubt you will be able to tell any difference between 4 and 5.

I would want to keep things as simple as possible and run the same fluid front and rear. Less chance of a screw up down the road.

Quote from: PoorUB on April 10, 2018, 03:38:03 PM

Quote from: klammer76 on April 10, 2018, 03:03:29 PM
Going 4 on the rear, staying 5 on the front.

That would make me crazy. I would put the same type of fluid in both.

I'd be keeping DOT5 in the rear was well.   

With QTMI now out of the picture rebuild kits for the HD Brembos are still available from Drag.

I still have a few QTMI Kits here but they will go with the 03 Fatty when it get's sold off.

I have the info here somewhere but years ago I identified the seals and pistons needed for the HD Brembos and posted the info so you could just go and get the parts from the local KTM Dealer.

Quote from: FSG on April 10, 2018, 08:24:36 PM

Quote from: PoorUB on April 10, 2018, 03:38:03 PM

Quote from: klammer76 on April 10, 2018, 03:03:29 PM
Going 4 on the rear, staying 5 on the front.

That would make me crazy. I would put the same type of fluid in both.

I'd be keeping DOT5 in the rear was well.   

With QTMI now out of the picture rebuild kits for the HD Brembos are still available from Drag.

I still have a few QTMI Kits here but they will go with the 03 Fatty when it get's sold off.

I have the info here somewhere but years ago I identified the seals and pistons needed for the HD Brembos and posted the info so you could just go and get the parts from the local KTM Dealer.

Are you sure? Story I got wast they quit selling them.
Ron

deleted

Quote from: FSG on April 10, 2018, 08:24:36 PM

Quote from: PoorUB on April 10, 2018, 03:38:03 PM

Quote from: klammer76 on April 10, 2018, 03:03:29 PM
Going 4 on the rear, staying 5 on the front.

That would make me crazy. I would put the same type of fluid in both.

I'd be keeping DOT5 in the rear was well.   

With QTMI now out of the picture rebuild kits for the HD Brembos are still available from Drag.

I still have a few QTMI Kits here but they will go with the 03 Fatty when it get's sold off.

I have the info here somewhere but years ago I identified the seals and pistons needed for the HD Brembos and posted the info so you could just go and get the parts from the local KTM Dealer.

KTM ? Never thought of them for seals. I do however have a set of KTM valve shims that work in the v rod.
Ron

Since we are on the subject..
Could one switch to dot 4. I'm rebuilding the calipers and the master was rebuilt 2 years ago with dot 5.. Could I put the dot 4 in and the seals in the master still be good?

Quote from: N-gin on April 12, 2018, 11:18:26 AM
Since we are on the subject..
Could one switch to dot 4. I'm rebuilding the calipers and the master was rebuilt 2 years ago with dot 5.. Could I put the dot 4 in and the seals in the master still be good?

As long as all the seals are either new or cleaned off as well as the brake lines to remove trace Dot5, I don't see why not. It's only when you mix, issues show up. I don't know what exactly goes on if you mix but I've had both Dot4 and Dot 5 in the same clear jar for over a year. They separate into two parts and don't jell. Shake it up, it sorta mixes then separates again into two levels. No chemical action I've noticed at least in the jar. To cover my ass, I'd still go squeaky clean on all components if changing fluid grade.
Ron

Quote from: rbabos on April 12, 2018, 12:13:19 PM

Quote from: N-gin on April 12, 2018, 11:18:26 AM
Since we are on the subject..
Could one switch to dot 4. I'm rebuilding the calipers and the master was rebuilt 2 years ago with dot 5.. Could I put the dot 4 in and the seals in the master still be good?

As long as all the seals are either new or cleaned off as well as the brake lines to remove trace Dot5, I don't see why not. It's only when you mix, issues show up. I don't know what exactly goes on if you mix but I've had both Dot4 and Dot 5 in the same clear jar for over a year. They separate into two parts and don't jell. Shake it up, it sorta mixes then separates again into two levels. No chemical action I've noticed at least in the jar. To cover my ass, I'd still go squeaky clean on all components if changing fluid grade.
Ron

This. When I converted to the Brembos, I totally disassembled everything, thorough cleaned everything with denatured alcohol & electrical contact cleaner, cleaned or installed new seals and good to go (I did do a NEW brake line). One thing, the plastic sight glass does not like denatured alcohol, made it foggy. Had to install a new one.
klammer

to answer a few questions ................ 

HD Brembo Repair Kits

As a follow up to this original post. Converted to Brembo front & rear brakes in 2016 on my 2002 FLH. Kept the original 2002 Kelsey Hayes 11/16 rear MC. Pedal never gave the feel and pressure that I wanted. Worked but not as it should, pedal had lot of travel and bottomed out. Just couldn't make enough pressure for the Brembo caliper. Finally decided to install the Brembo, 08 up, 5/8 MC. After a lot of stalling, indecision, just decided to do it and cut the Hayes bracket off the mount. Located new position, drilled new mount holes, painted and bolted up. Brake now works as it should. Nice pedal feel and pressure and good braking. I did stick with using DOT 5. Not a difficult job after all.

Bracket removed, locating MC holes



Ground down, ready for paint



Painted



Finished install

Good to see all this info. Planning on the upgrade myself. I've considered doing the rear also, just haven't made that leap yet. I suppose I should.

Quote from: DanThe Man on May 13, 2019, 07:34:39 AM
Good to see all this info. Planning on the upgrade myself. I've considered doing the rear also, just haven't made that leap yet. I suppose I should.

Biggest reason for me was the ease of tire removal and installation. The rear OEM worked well but was a pain when running a 150 rear tire. It's a breeze now. The Brembo's really do like to have the matching MC's both front and rear. It's a leap of faith & commitment to cut off the bracket but the good news is, if you ever wanted to go back to the original set up, early model tri-glides use the same Kelsey Hayes MC but is cast with the brembo mount. 

That is really nice looking work you have done.  I have DOT 5 in my 99 FLHT and despite all the negative stuff I read I like it.  I have only changed the fluid twice and both times the stuff that came out looked fine to me (a little color change is all I observed) and there was really no discernible performance difference to me afterwards either time.  One less thing to worry about IMO.

Nice work klammer. Do you have a rubber line for the rear? Only time I've had a soft lever/pedal was with old rubber lines. Braided lines, always a firm feel. 

Quote from: Deye76 on May 14, 2019, 06:52:02 AM
Nice work klammer. Do you have a rubber line for the rear? Only time I've had a soft lever/pedal was with old rubber lines. Braided lines, always a firm feel.

I have the stock 2008 non abs line. Metal and some rubber. It wasn't the line, the 2002 stock MC (11/16) just wouldn't build the pressure (it was a new MC also) that the Brembo caliper needs. The Brembo 5/8 MC works great. The 2002 Kelsey Hayes worked but as said, pedal all the way down then lot of pressure on it. It would get you stopped but it just wasn't right. The pedal is right there now.

I checked numerous bikes on the floor at several dealers, new & used, different years. Pedal throw was all over the place. New ones (although abs) were good. used bikes (abs & non) were 50/50, some long some where they should be. Don't know if that was due to old fluid that needed changing or what.

I do run braided magnum Shielding lines on the front with a Brembo MC and DOT 5. Those brakes are excellent also.

nice work   

Quote from: FSG on May 14, 2019, 11:19:42 AM
nice work   

Thanks Gary