Banjo bolts
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6th Gear
Joined: Apr 2017
Posts: 11
Likes: 3
From: Juneau, ak
Banjo bolts
So trying to get some of the DIY brake lines kits. It looks like there is 10mm banjo bolts and 3/8 banjo bolts. Anybody on here know which one would come on 2010 iron?
Thank in advance
Thank in advance
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Joined: Jun 2007
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From: Bedford UK
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From: Nor Cal
6th Gear
Joined: May 2018
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From: Blockton IA
You can check details like that on-line here. The answer is 10mm, but check for yourself!
Cruiser
Joined: Jul 2016
Posts: 144
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From: Florida
I know others have done this same mod and it has worked, but does the master cylinder have the volume capacity to actuate two brake calipers? I am sure it does, still it is something that crosses the mind
Never mind, I just realized you are not adding another caliper.
The system was designed for two..
Never mind, I just realized you are not adding another caliper.
The system was designed for two..
Last edited by 1HD4CJM1X4K; Aug 23, 2018 at 05:58 AM.
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HDF Community Team
Joined: Dec 2011
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From: San Diego, CA
I know others have done this same mod and it has worked, but does the master cylinder have the volume capacity to actuate two brake calipers? I am sure it does, still it is something that crosses the mind
Never mind, I just realized you are not adding another caliper.
The system was designed for two..
Never mind, I just realized you are not adding another caliper.
The system was designed for two..
John
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From: Maple Ridge BC & Chiangmai
Single and dual disc MC have a different bore - not sure about the stroke but it matters not, as the MC are different for each application. For proper performance you will need a dual disc MC.
Makes sense given twice the number of pistons to push
3/8 is not a M10 bolt, and you will need a proper metric bolt. Some would use a 3/8 banjo on a M10 bolt, but I would rather not
Buy new crush washers while you are at it.
M10 x 1 is common with a Brembo MC but I doubt it will fit your HD. Given that 1.25 is not it, then the only remaining choice is M10 x 1.5. If your bike is like mine, then it is 1.5 pitch
My problem with banjo bolts is finding a double banjo M12 x 1.5 to use with 10mm thick banjos from HEL. The bolt I bought must be for a car and thicker banjos so will not work. I cannot find a proper bolt, and neither HEL nor Goodridge seems to have one.
Any help would be greatly appreciated
Machining a bolt is my last resort, as it is difficult to believe that no one makes such a double bolt?
If I have to machine a banjo bolt, I will incorporate a bleed screw at the MC banjo
Makes sense given twice the number of pistons to push
3/8 is not a M10 bolt, and you will need a proper metric bolt. Some would use a 3/8 banjo on a M10 bolt, but I would rather not
Buy new crush washers while you are at it.
M10 x 1 is common with a Brembo MC but I doubt it will fit your HD. Given that 1.25 is not it, then the only remaining choice is M10 x 1.5. If your bike is like mine, then it is 1.5 pitch
My problem with banjo bolts is finding a double banjo M12 x 1.5 to use with 10mm thick banjos from HEL. The bolt I bought must be for a car and thicker banjos so will not work. I cannot find a proper bolt, and neither HEL nor Goodridge seems to have one.
Any help would be greatly appreciated
Machining a bolt is my last resort, as it is difficult to believe that no one makes such a double bolt?
If I have to machine a banjo bolt, I will incorporate a bleed screw at the MC banjo