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| Author: | MadMike [ Wed Nov 10, 2010 12:17 pm ] |
| Post subject: | Cutting brake option |
Things I think I think. I'm pressing on with my single seater build and I'm doing some design work. There is no room for anything, including cutting brakes. So I was wondering if...... Instead of using the standard single handle or twin handle cutter brake set up, doing an electric cutting brake. What I'm thinking is this. The car has a typical foot brake for the rear brakes. What would stop me from hooking up 2-12 volt electric solenoid valves one for each rear wheel and a rocker switch on the shifter handle. To lock the right wheel you would lock out the left rear and hit the foot brake applying all the brake to the right caliper. So instead of grabbing a brake handle it would be push a button and stomp the brake peddle. Anyone see any problems with doing this besides the learning curve. |
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| Author: | Odyknuck [ Wed Nov 10, 2010 1:41 pm ] |
| Post subject: | Re: Cutting brake option |
Is it feasible yes, however the cost of a solinoid able to handle 1200 PSI will not be cheap X2. |
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| Author: | MadMike [ Wed Nov 10, 2010 1:51 pm ] |
| Post subject: | Re: Cutting brake option |
2500 psi stainless steel high pressure solenoid valve $122.00 each. Only problem it's 24v DC. I'll find what I need somewhere. OR What about a line lock used in drag racing plummed in reverse? In racing it's pump your brakes and hit the button holding pressure in the front brakes. In a buggy it would be hit the button and stomp the brake holding pressure out of one side or the other. Line locks are about $40 each. |
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| Author: | JRK [ Wed Nov 10, 2010 2:10 pm ] |
| Post subject: | Re: Cutting brake option |
you probably got one laying around somewhere(linelock). Don't know if they would hold back that much pressure. |
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| Author: | ridenrace6 [ Wed Nov 10, 2010 3:32 pm ] |
| Post subject: | Re: Cutting brake option |
i see where the line locck idea could work but, that would call for some fancy foot work, especially when your on the gas, brake, and all of a sudden you need the the also  ive always liked the idea of those setups i used to see in sand sports magazine about 10 year ago that applied the turning brake when turning the steering wheel, but i cant seem to find my magzines from back then to get the name of the company or a website |
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| Author: | MadMike [ Wed Nov 10, 2010 3:38 pm ] |
| Post subject: | Re: Cutting brake option |
Ya the learning curve might be tricky. Still like the idea concidering I have no other options to install a cutter. |
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| Author: | giveitagallon [ Wed Nov 10, 2010 6:31 pm ] |
| Post subject: | Re: Cutting brake option |
mike im by far a engineer but curious if you could put two pedals side by side one for right brake one for left ,then have a balance bar at the middle point of the pedals so when you hit the balance bar it would push eqeal pressure to both pedals for brakes only . then when you want cutters you could raise your foot up so more of your toes were touching the top of the pedals so their would be no balance bar and push either left or right pedal for cutters . this would mean you would have two master cylinders one for each rear wheel . just a idea im sure you will come up with something cool ! glad to see ya putting a buggy together again and cant wait to follow it from start to finish ! jason |
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| Author: | PhillipM [ Wed Nov 10, 2010 6:35 pm ] |
| Post subject: | Re: Cutting brake option |
As above, either split brake pedals, or run a couple of levers on the steering wheel attached to remote cylinders via cables. |
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| Author: | MadMike [ Wed Nov 10, 2010 7:33 pm ] |
| Post subject: | Re: Cutting brake option |
Jason, I'm not an engineer. I'm not a dancer either, talk about some fancy foot work. I think a set of buttons and one peddle would be much easier to get use to. Phillip I suscribe to the KISS way of doing things, simple. Look up an artist named Rube Goldburg look at some of his drawings. If your not careful, things can turn out that way. 
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| Author: | kybuggy1 [ Wed Nov 10, 2010 7:57 pm ] |
| Post subject: | Re: Cutting brake option |
You still building that stadium buggy frame? Seems like there would be room, I wouldve thought they run cutters. Who'd a thunk they was that tight? You cant mount a single laydown handle next to your seat? Or is there room for just a handle and pivot point with REEAALLLY long rods going to the cylinders mounted elsewhere? If you have to intiate cutters with your feet, that means you either gotta let off the gas or move your foot away from the clutch. The worst problem I have with controls when climbing is my feet bouncing around and then miss the clutch or just halfway get onto the gas pedal or something dumb like that. Doesnt seem like a good situation to me to be movin your feet all around right before a tough spot, but everybody is different. |
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| Author: | PhillipM [ Wed Nov 10, 2010 8:50 pm ] |
| Post subject: | Re: Cutting brake option |
MadMike wrote: Phillip I suscribe to the KISS way of doing things, simple.) Couple of cables to the cutters is no worse than a couple of levers  We're fitting it to ours this winter, just for the odd occasion in hairpins, etc, where you don't want one hand off the wheel, found that the 6082 brake levers from decent pushbikes these days seem to be more than stiff enough for good feedback. |
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| Author: | MadMike [ Wed Nov 10, 2010 9:25 pm ] |
| Post subject: | Re: Cutting brake option |
That chassis was designed for a lay back fiberglass or poly seat, not the big ass Corbau suspension seat that's going in it. (minum build requirement) It was tight to begin with, I didn't help things, oh well. I'm just tossing ideas out, looking for pros and cons. I think 2 solenoids weigh less that a set of cutters  Just measured, inside rail to inside rail (floor) 28" max. Add a shifter and you got zero. |
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| Author: | kybuggy1 [ Thu Nov 11, 2010 12:28 am ] |
| Post subject: | Re: Cutting brake option |
MadMike wrote: I think 2 solenoids weigh less that a set of cutters Now you're talkin!  I have seen a single seater with the shifter between the drivers legs  I think he didnt wanna try to build a shift tube with universals in it. Then you'd have room for the cutter where its comfy. Or you could always put the shifter on the left side. Thats prolly where PhillipM's is. Cutter location and function is #1 priority on a hillclimber as far as controls, IMO. seriously. |
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| Author: | jesse [ Thu Nov 11, 2010 3:21 am ] |
| Post subject: | Re: Cutting brake option |
well the cutter dosent have to be mounted to the floor make a bracket to bolt it to somewhere off a bar |
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| Author: | PhillipM [ Thu Nov 11, 2010 10:17 am ] |
| Post subject: | Re: Cutting brake option |
kybuggy1 wrote: MadMike wrote: Or you could always put the shifter on the left side. Thats prolly where PhillipM's is. 'S where the cutters are too So that we can both use them
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| Author: | JeffClay [ Fri Nov 12, 2010 9:39 pm ] |
| Post subject: | Re: Cutting brake option |
i like your solenoid idea, mike, I will peak around at work and see if there is anything 12 volt, but i doubt it. seems like everything that style is going to be in the 24 range..... what if... you fabricate a mount so that your cutter is over top of your shift tube? i dont know what the inside looks like, but that would be like having two shifers in line which you shouuuuuld have room for? |
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| Author: | JeffClay [ Fri Nov 12, 2010 9:41 pm ] |
| Post subject: | Re: Cutting brake option |
also, again i dont know what your cockpit consists of, but i have my cutter mounted in front of my shifter diagonally, pull it towards me, left wheel, push it right. lines face front of buggy. dont know if you could fit this either? |
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| Author: | MadMike [ Fri Nov 12, 2010 11:20 pm ] |
| Post subject: | Re: Cutting brake option |
Looks like some space opened up. Fuelsafe made the original fuel bladders for the side pods. They no longer have the pattern to make them, seems it burned up in a fire that destroyed a bunch of their old stuff. So it looks like I might be able to mount stuff outside the main chassis where the fuel tanks use to live. Still might persue the solenoid idea just to see if it would work. I'm finding out this is the second fire associated with the Funco SS2. Fuelsafe had it's fire and the guy who made the fiberglass bodys for this car, his shop burned to the ground with him and all his molds in it. Need to check on my fire insurance. |
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| Author: | bmoore [ Fri Nov 12, 2010 11:27 pm ] |
| Post subject: | Re: Cutting brake option |
wow
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| Author: | JeffClay [ Tue Nov 16, 2010 8:24 pm ] |
| Post subject: | Re: Cutting brake option |
couldn't you use a solenoid with a range like 0-36v? I'm pretty sure we have some at work that have ranges, I know a lot of the switches, etc. do. |
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| Author: | MadMike [ Tue Nov 16, 2010 10:41 pm ] |
| Post subject: | Re: Cutting brake option |
If I need to I'll just buy another line lock, already have a new one left over from Bob's drag car. |
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| Author: | JeffClay [ Tue Nov 16, 2010 11:51 pm ] |
| Post subject: | Re: Cutting brake option |
Ill check out some valve coils tomorrow at work and see what's up..... the only thing that might suck is the on off factor... a normal cutter u can control the pressure thus controlling how you want the buggy to respond... I know on a lot of hills its light cutter one way then heavy the other etc.. |
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| Author: | beeker [ Wed Nov 17, 2010 10:19 pm ] |
| Post subject: | Re: Cutting brake option |
they make an electric brake shut off for round track cars it sells at www.speedwaymotors.com for $89.99 each p/n# 282-86120( it is 12 volt) the valve is nomally closed . so i guess if you wanted to stop you would have to push both buttons and hit the peddle beeker |
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| Author: | MadMike [ Wed Nov 17, 2010 11:39 pm ] |
| Post subject: | Re: Cutting brake option |
The idea behind this is/was one valve would isolate one wheel out. Hit the left button it would lock out the right caliper. No matter what foot pressure is applied it would work the same as a hand operated cutter. The reason for all this is for space, or the lack there of, and weight. |
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| Author: | MadMike [ Thu Nov 18, 2010 1:27 pm ] |
| Post subject: | Re: Cutting brake option |
Did a quick test this morning. A standard roll control (line-lock) works as expected. Apply pressure and hit the button, the flow stops. Release the button and back to normal. Looks like this is the way I'm going for cutter brakes. Sorta high-tech and real light weight not to mention almost half the cost of a standard cutter set up. 2-$40 line locks vs $150 cutter set up. |
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