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Author Topic: 750F Preparations  (Read 1633 times)
cabrala
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« on: July 17, 2014, 12:11:04 PM »

For what you may ask?

At the end of August I will be riding up to Nova Scotia for two weeks while work transitions between semesters. In preparation I would like to address some maintenance/wear-and-tear items. Naturally I look to your experiences and recommendations to guide me. Here are my thoughts:

Steering Head Bearings:
All-Balls Taper Bearings

Front Brakes:
Caliper disassembly
Possible piston renewal…phenolic? OEM? stainless?
Caliper seal
Brake pads
DOT3/4 fluid

Rear Brakes:
Possible rebuild, but this is something I'm not certain I want to tackle at the moment. Both the caliper and master cylinder could use some attention but I don't think just prior to the trip is the right timing.

The bike has brand-new tires and newer fork seals (last season). It's been running really well but will get the full 3,000 mile maintenance list run on it prior to departure.

Any thoughts? Vendors for brake parts?
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Connito
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« Reply #1 on: July 17, 2014, 12:50:52 PM »

Great Alex! Are you going by yourself?

All-Balls Taper Bearings installed by Anders is a the way to go! As soon as he is back from his trip I will be going to NH to have him install a set on my K1. May be we can go together? I have an extra bearing set I can pass onto you.

Front Brakes.
Caliper disassembly is a great idea. I would suggest you go with the stainless steel piston. Phenolic might be better (arguably), but as far as I know no one makes them anymore. No reason to install OEM in my opinion. Obviously you'll change the seal as well. Examine the brake pads and if they are less than 50% replace them also.
I got my s/s piston along with the seal from a guy on eBay. Excellent product and the seal is an OEM. Great person to deal with! Unfortunately, I couldn't find his post on eBay today. I have his personal email. If you want me to, I can email him to see if he has any left. DO NOT BUY FROM THE GUY IN GERMANY!!!!
Didn't you change the fluid at the end of last year? If so, I wouldn't bother.

If there is no real problems with the rear brake, I wouldn't touch it. Perhaps change the fluid?


Cheers,
Peter

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knowsnothing
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« Reply #2 on: July 17, 2014, 02:07:45 PM »

I would suggest you go with the stainless steel piston. Phenolic might be better (arguably), but as far as I know no one makes them anymore.

You sir, would be incorrect.  http://www.vinmoto.org/gallery/v/VinMoto-Garage/album03/Godfferys-Garage-123/Parts+and+service/PHENOLIC+Replacement+brake+Caliper+piston/

I have one in my 350. 
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Connito
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« Reply #3 on: July 17, 2014, 03:05:34 PM »

Cool!
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cabrala
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« Reply #4 on: July 17, 2014, 05:17:46 PM »

I saw VinMoto and have them bookmarked as a possibility but I was going to allow you all to sway me one way or the other because I could not find information as to what material might be better/best.

In terms of the trip, I am slated to leave on the 16th and travel for two weeks. The idea was had by Trisha's mother, who did a solo motorcycle trip to Key West two years ago and a trip to the Tail of the Dragon last year. At minimum it will be just her and I going, but I assume that Trisha and her father will take part in the trip as well.
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knowsnothing
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« Reply #5 on: July 17, 2014, 05:56:16 PM »

OEM Piston:
Pro - It fits
Con - Its heavy, corrodes, and is expensive new

Stainless:
Pro - Fits, won't corrode (supposedly), its shiny
Con - Its heavy

Phenolic:
Pro - It fits, is light, won't corrode, and is relatively inexpensive
Con - Its ugly

Ta-da  Grin
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azure
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« Reply #6 on: July 17, 2014, 06:05:32 PM »

You're going to Nova Scotia with your girlfriend's mother??
Man, you are a smooth SOB!
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frostypuck
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« Reply #7 on: July 17, 2014, 06:09:29 PM »

Aside from the price difference for phenolic, it took probably 20 years for the original chromed piston to be worn enough that the protective film went away, and then it took several more years of dis-use to corrode and seize up. As Soichiro said, "with proper maintenance, your new Honda CB750 will last many happy years." Or something like that.
My usual response is if the engineers had the tech we have now, they would have done…whatever, FI, hydraulic clutch, electronic ignition. But I don't think they would have done phenolic brake pistons. There's probably a reason most all the modern bikes still use good ol' fashioned metal pistons.
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Connito
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« Reply #8 on: July 17, 2014, 07:12:44 PM »

There, does this make it easier to decide  Grin

S/s for me!
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cabrala
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« Reply #9 on: July 17, 2014, 07:53:07 PM »

OEM replacement through JT Marks is $54
Phenolic through VinMoto is $44
Stainless is something I haven't sourced yet.

Peter, let's talk All Balls soon. I'm good to go up to NH when Anders comes back.

Ben, I do try to be slick  Wink.
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Connito
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« Reply #10 on: July 17, 2014, 07:55:44 PM »

Stainless is about 40. Do you want me to contact the person I bought mine from?
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cabrala
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« Reply #11 on: July 17, 2014, 08:31:02 PM »

Stainless is about 40. Do you want me to contact the person I bought mine from?

Would you feel comfortable sending me their contact information? Or just sending them mine? Thanks!
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andy750
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« Reply #12 on: July 17, 2014, 09:55:59 PM »

I have phenolic in my K4 and wouldnt have it any other way - bought from Kevin Hunter in Texas who for a while was making them. Zero issues and my brakes work Wink.

Nova Scotia with the mother....would never have thought of that  Cool Have fun! It will be a great trip on the F! If Anders can do it on his K7....

cheers
Andy
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Connito
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« Reply #13 on: July 17, 2014, 10:24:46 PM »

Stainless is about 40. Do you want me to contact the person I bought mine from?

Would you feel comfortable sending me their contact information? Or just sending them mine? Thanks!
f

Sure! I will text you his email.
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knowsnothing
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« Reply #14 on: July 18, 2014, 08:59:13 AM »

Alex, here is another place i book marked that sells SS pistons

http://www.charlies-place.com/PAGES/Store/store_brake_pistons.html
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