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colvfrfg
Samba Member
Joined: May 30, 2018
Posts: 15
Location: Bandung, Indonesia
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 Posted: Sun Dec 30, 2018 12:21 am Post subject: Thing Brake booster / servo |
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Hi everyone,
I'm going to fit a brake booster on my 1976 182. The booster doesn't have a dual circuit system, do i just connect the front an rear brakes lines as one?
Colin |
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Bashr52
Samba Member
Joined: July 16, 2006
Posts: 5666
Location: On an island in VA
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| Posted: Mon Dec 31, 2018 7:01 am Post subject: Re: Thing Brake booster / servo |
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I'm curious as to what you are using as a booster, and how you are going to power it?
Or are you talking about replacing the master cylinder with a single circuit one? The single circuit masters have 3 ports. One to each front wheel, and one to both rears. I would buy a dual circuit and upgrade if you are going to be replacing it. |
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colvfrfg
Samba Member
Joined: May 30, 2018
Posts: 15
Location: Bandung, Indonesia
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| Posted: Thu Jan 03, 2019 6:33 pm Post subject: Re: Thing Brake booster / servo |
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It's TRW remote booster / servo.
The vacuum will come from the port on the inlet manifold.
The 'power' will come from one of the front braking ports and the other port will blanked off. The rear braking port will blanked off also.
The braking system at present is a dual circuit and it will be a single system after fitting the booster / servo.
The front and rear brake cicuits will be connected together
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Bashr52
Samba Member
Joined: July 16, 2006
Posts: 5666
Location: On an island in VA
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| Posted: Fri Jan 04, 2019 7:04 am Post subject: Re: Thing Brake booster / servo |
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| colvfrfg wrote: |
It's TRW remote booster / servo.
The vacuum will come from the port on the inlet manifold.
The 'power' will come from one of the front braking ports and the other port will blanked off. The rear braking port will blanked off also.
The braking system at present is a dual circuit and it will be a single system after fitting the booster / servo.
The front and rear brake cicuits will be connected together
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I've never seen anyone do that setup before, that is going to be a long way to pull vacuum off the engine.
Why not run the brakes they way they are now on the dual circuit master? I'd feel better knowing the brakes were hooked up in two places in case of a failure. |
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CarlSpackler
Samba Member
Joined: December 12, 2005
Posts: 665
Location: Mason, Ohio
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| Posted: Fri Jan 04, 2019 11:19 am Post subject: Re: Thing Brake booster / servo |
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Starting in '71 the type II had a vacuum line all the way to the front beam.
_________________
'67 Micro Bus
'73 Thing
'91 Westy |
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mondshine
Samba Member
Joined: October 27, 2006
Posts: 2769
Location: The World's Motor Capital
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| Posted: Fri Jan 04, 2019 3:20 pm Post subject: Re: Thing Brake booster / servo |
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The length of the vacuum line is insignificant; provided there are no leaks, and it is made of a material that will not collapse.
Several British cars built in the 60's and 70's had remote brake boosters. Additionally, remote boosters are a "thing" in the street rod world.
The stock Thing drum brakes are pretty weak (even in perfect condition and perfectly adjusted) when compared to the brakes on a modern car. Most people address this by installing disc brakes on the front axle (or on all four wheels).
I will be curious to see how this works out; whether a simple increase in hydraulic pressure from the brake booster will improve braking performance without causing other complications. One I can imagine right off is the loss of the safety factor provided by two brake circuits. In any event, I hope it works out.
Good luck with this, Mondshine |
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Wildthings
Samba Member
Joined: March 13, 2005
Posts: 50332
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| Posted: Sat Jan 05, 2019 12:49 am Post subject: Re: Thing Brake booster / servo |
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| You might be able to come up with shoes that offer additional friction if you can't afford to go to front disc brakes. |
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colvfrfg
Samba Member
Joined: May 30, 2018
Posts: 15
Location: Bandung, Indonesia
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| Posted: Sun Jan 06, 2019 5:11 pm Post subject: Re: Thing Brake booster / servo |
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The booster / servo is being sited underneath the back seat so it's very close to the vacuum port on the manifold.
Many Things (Safaris here) and Bugs (Kodok here) have thie same setup in Indonesia. I'll finish mine in the next couple of days and post the results.
Colin |
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colvfrfg
Samba Member
Joined: May 30, 2018
Posts: 15
Location: Bandung, Indonesia
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| Posted: Fri Jan 11, 2019 3:51 am Post subject: Re: Thing Brake booster / servo |
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The booster / servo is now fitted and working but only on the front brakes, the rear brakes are as original.
The capacity / volume of each section of the dual circuit master cylinder, is only enough for two slave / wheel cylinders. If required, another booster / servo could be fitted for the rear brakes but i'm not going to that because i'm happy with the results achieved.
The booster / servo input is operated from one of the front brake ports and the other has been blanked off. The output from the booster / servo is connected to the two front brake lines using a 'T' connector.
Colin |
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