master Cyclinder

[pete2470]

VTX 1800 Road Smith kit. Has anyone had a issue with the master cylinder of the bike not being big enough to supply break fluid to the rear breaks...was told this today by repair shop. Trike breaks fine. Should I be worried.. new to trike world, but love it.

 

[keepinon]

I believe your VTX has linked brakes like the GW (my friends does) so they should work as well.

I did find with mine, once the lines and brake cylinders are full of fluid, & brakes adjusted correctly) it doesn't take much "pedal" to operate them. As there is greater room for wear (two rear brakes vs one) they might require more frequent adjustment, if they are drum brakes. Disc brakes, just add fluid.

 

[cscsonny]

Hello Pete,
You asked "should I be worried" and I think I would if I thought fluid was not getting to the rear brakes as it should,especialy if I got caught riding in the rain or a situation where all brakes were needed as in a "panic stop".How did your shop determine not enough fluid was getting to the rear brakes?
I have a '97 GW with 2011 CSC kit and the front and rear brakes are seperated to front only with the handlebar commom front brake and both rear disc with the foot pedal.CSC rebuilds the front master cylinder with a larger bore to send more fluid to the now two front disc.
I think I would check with Roadsmith and see what they have to say about it also.
Hope this helps.
Sonny

 

[mhgoldwing]

I don't know if all VTX 1800 have the modified linked braking system referred to in a Top Speed review. They did note that the linked system IS NOT the same as the Goldwing.

I have an '06 1800 with Road Smith conversion and Road Smith disconnected my linked brakes; may not have been necessary on yours as the front brake only handles braking on the front wheel and nothing on the rear unlike the GW version where the front brake also operates part of the rear brakes.

My recommendation would be to contact Road Smith and get the real answers from the only people who know. Based on my experience with them I don't believe they would have allowed a trike to hit the road with insufficient brakes.

 

[Baz]

VTX 1800 Road Smith kit. Has anyone had a issue with the master cylinder of the bike not being big enough to supply break fluid to the rear breaks...was told this today by repair shop. Trike breaks fine. Should I be worried.. new to trike world, but love it.

Do you mean perhaps the master cylinder is too small because they use the std VTX 1800 M/C ?? If that is the case then I also would believe it to be too small to push enough fluid to operate 2x auto brakes.

 

[Smoken'JOE]

Old thread but still would like more info.
Still not able to really lock up the rears. Have to pump up the pedal to get a good stop. I have bled the lines more times than should have to. Will call Roadsmith though.

 

[sonney]

I have the same problem with my Goldwing. Peddle is soft but I have enough brake to stop it. With the master cylinder the same but pushing more fluid you should not expect that it will feel the same. What trike companies should do is make a bigger master cylinder to put more pressure on the system. JMO

Sonney

 

[Smoken'JOE]

When I talked with Roadsmith, Mike, he is looking into it. Seems on the VTX kits after mine, they added a larger MC from a GW. We'll see.

 

[nucseal]

Had the same problem with 06 Goldwing Hannigan. Tripacer1 gave me idea of shimming my brakes. Worked perfect! Brought the brake pedal backup and no more pumping. Ran the Twisted Sisters, Tx today with out a problem. Just idea.
Also back bleed the brakes and installed a disc brake residual pressure valve.

 

[Smoken'JOE]

Had the same problem with 06 Goldwing Hannigan. Tripacer1 gave me idea of shimming my brakes. Worked perfect! Brought the brake pedal backup and no more pumping. Ran the Twisted Sisters, Tx today with out a problem. Just idea.
Also back bleed the brakes and installed a disc brake residual pressure valve.

Sounds interesting...................You shimmed the brake pads out a few thousands?
Got a number for the disc brake residual valve..............or at least what it is. LOL
Back bled the brakes?????????????

Got any pictures, please.

 

[RSW]

Sounds interesting...................You shimmed the brake pads out a few thousands?
Got a number for the disc brake residual valve..............or at least what it is. LOL
Back bled the brakes?????????????

Got any pictures, please.

If the master cylinder is lower then the calipers, then you need to use one to keep the brake fluid from draining back into the master cylinder.

Use the 2 psi one for disc brakes.

VW Brakes – Dune Buggy Braking Systems | AppleTreeAuto.com

Wilwood Blue Disc Brake Residual Valve, 2 PSI - Speedway Motors, America's Oldest Speed Shop

 

[nucseal]

Sounds interesting...................You shimmed the brake pads out a few thousands? Yes
Got a number for the disc brake residual valve..............or at least what it is. LOL
Back bled the brakes????????????? I got one of those Oil Squirt cans and used a short piece of Clear tubing that way start pumping till the fluid comes out the tubing then slip it over the bleeder and open the bleeder and start pumping the fluid will rise in the MC so make sure you keep siphoning some. Make sure the the tubing fits tightly over the bleeder valve.I started on furthest first first and then switch to the closes side


Got any pictures, please.Sorry no pics

Hope this help! Like I said, I learned this from another triker; who was kind enough to share and it worked for me! Something to at least look into! I see you have your answer to the residual valve.

 

[Shimpy]

I know what you mean. I have the feeling that I cannot lock up my rear wheels if I had a panic stop. I've tried the brakes pretty hard and it is nothing like when 2 wheels. Mine are not soft, just won't apply enough pressure apparently.
Champion S/A

 

[RSW]

Maybe this will help a little.

Brakes1