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 Post subject: Re: A-arm buggy
PostPosted: Tue Dec 30, 2008 11:18 am 
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That is AWESOME.... I could only dream of building something that cool...

Although, you really need to cheer up in the pics :lol: :lol:

Great Job and I look forward to seeing more pics

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 Post subject: Re: A-arm buggy
PostPosted: Tue Dec 30, 2008 12:21 pm 
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Well, it is a blast! Thats not me in the pic, thats kevin (the future racer of this car). He's probibly got the blues thinking about how much this going to cost!lol!
LUV Buggy wrote:
Do you have any camber gain, and what is your scrub radius?

Well we have a 4* camber change, and we can't figure out the scrub untill we have wheels and tires on it.

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 Post subject: Re: A-arm buggy
PostPosted: Tue Dec 30, 2008 2:48 pm 
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 Post subject: Re: A-arm buggy
PostPosted: Tue Dec 30, 2008 3:14 pm 
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awesome. i would be frowning to, pretty sure those triple bypasses alone cost more than enough to be down about. excellent work though.

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 Post subject: Re: A-arm buggy
PostPosted: Tue Dec 30, 2008 8:00 pm 
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That is a F***ing thing of beauty. I just shed a tear

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 Post subject: Re: A-arm buggy
PostPosted: Tue Dec 30, 2008 10:32 pm 
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Is it made from 1.5" tubing with 1.25" diagonals?

Why did you state 7* of camber on Race-Dezert, and 4* here? Did something change in the last few weeks?

Why do you favor trailing arms over semi-trailing arms? Or did you just want to use what you had on hand?

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 Post subject: Re: A-arm buggy
PostPosted: Wed Dec 31, 2008 9:41 am 
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I don't know why I said 4* on here. AT full droop, its like 0*, and at bottom, its around 6*. I guess it all depends on which one of my broken anglefinders you kick across the floor, then pick up to check it with. Yes thats 1.5 and 1.25. I love the simplicity of the straight pivot arms. My last 2 cars had them, and I think they do great. :mrgreen:

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 Post subject: Re: A-arm buggy
PostPosted: Wed Dec 31, 2008 4:01 pm 
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LUV Buggy wrote:
semi-trailing arms? ?


What are semi-trailing arms :?

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 Post subject: Re: A-arm buggy
PostPosted: Wed Dec 31, 2008 4:31 pm 
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A. Cole wrote:
What are semi-trailing arms

stock "vw" rear arms are semi-trailing arms. They make an arc as they cycle, where straight pivot arms don't. both have pro's and con's.

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 Post subject: Re: A-arm buggy
PostPosted: Wed Dec 31, 2008 4:40 pm 
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Whats the cons of straight pivot??

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 Post subject: Re: A-arm buggy
PostPosted: Wed Dec 31, 2008 11:56 pm 
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The con of straight pivot trailing arms is no camber change. This only matters if you plan to do any cornering. :lol:

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 Post subject: Re: A-arm buggy
PostPosted: Thu Jan 01, 2009 10:09 am 
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The semi-arcing trailing am gets a tad more travel because the cv binds a little later.

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 Post subject: Re: A-arm buggy
PostPosted: Thu Jan 01, 2009 12:59 pm 
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I see.. When i started my build i thought camber was a bad thing. And luckly now i dont have to worry about cv angles..

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 Post subject: Re: A-arm buggy
PostPosted: Fri Jan 09, 2009 7:04 pm 
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wow that shit is crazy :shock: nice work 8)


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 Post subject: Re: A-arm buggy
PostPosted: Mon Jan 12, 2009 1:50 pm 
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Well, the progress looks minimal at this point, all the "big" things are done. We mounted the ram for the power steering, which was a pain in the A$$! It took us about 5 hours to figure out how to mount it out of the way of the a-arms and tie rods, and make a new spreader plate, but I think it looks clean, and is mounted perfectly. Other than that, some new bracing.... and thats about it for now!
Image
top view
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front view
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back view
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 Post subject: Re: A-arm buggy
PostPosted: Mon Jan 12, 2009 3:57 pm 
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In looking at your Ram mount and from what I see you are going to bend the tube that its attached to. I have the same Sweet set up mounted to a 1/4" thick tab welded to the lower frame were the cross member "T"s into the main and you can watch it flex back and forth at the end of stroke. The ram still pushs on the mount even after your steering reachs it stops. I added an additional brace to help. There is an extreme amount of force applied to that joint. Plumberbill has actually ripped his away from the frame twice and its a 2 point connection.

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 Post subject: Re: A-arm buggy
PostPosted: Mon Jan 12, 2009 4:04 pm 
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Odyknuck wrote:
In looking at your Ram mount and from what I see you are going to bend the tube that its attached to.

I don't know much, but i was thinking the same thing. Especially with the stress and abuse it is going to go through.

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 Post subject: Re: A-arm buggy
PostPosted: Mon Jan 12, 2009 4:51 pm 
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I'm not going to argue that at all. We were looking at the racks that sweet sells with that same ram, and they don't have any more than an 1\8" tab holding it. I know the mount on this is alot stronger than that. Time will tell.

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 Post subject: Re: A-arm buggy
PostPosted: Mon Jan 12, 2009 5:10 pm 
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bout time for some tires now ohhhh its gonna look so good when its done


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 Post subject: Re: A-arm buggy
PostPosted: Mon Jan 12, 2009 5:27 pm 
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RaceBugg1098 wrote:
I'm not going to argue that at all. We were looking at the racks that sweet sells with that same ram, and they don't have any more than an 1\8" tab holding it. I know the mount on this is alot stronger than that. Time will tell.


Could be that they can limit the stroke in the rack to match the steering stops. If you can use up all your travel then its not an issue. I have in my plans to add internal limiters to the ram to stop the push on the tab when the steering gets to its stops.

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 Post subject: Re: A-arm buggy
PostPosted: Tue Jan 13, 2009 9:25 am 
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well, as long as the rack is at its stops, it should be ok, right? Once the rack stops, you will not be able to turn the servo, so the ram shouldn't be able to move either. I haven't screwed around with this set-up too much. I know that with a torque generator, you can tear everything up pretty quick with-out stops :mrgreen:

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 Post subject: Re: A-arm buggy
PostPosted: Tue Jan 13, 2009 10:33 am 
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Actually the Servo valve is still open in the direction of the steering wheel and thats why the ram continues to push. The Servo does not know you have stopped turning until you move the wheel in the opposite direction and reverses the valve.

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Last edited by Odyknuck on Tue Jan 13, 2009 3:44 pm, edited 1 time in total.

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 Post subject: Re: A-arm buggy
PostPosted: Tue Jan 13, 2009 1:42 pm 
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Yeah, i guess your right. I was thinking about internal stops (in the ram), and that would be easy to do... OR I was also thinking, this car will be competing against me this year... It might be to MY advantage to let it break :twisted: HA HA HA! just kidding kevin :mrgreen:

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 Post subject: Re: A-arm buggy
PostPosted: Tue Jan 13, 2009 3:49 pm 
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Internal stops is probably the easyest. One will have to have a hole in it to accomadate the shaft and the other one only needs to be a blank round of 6061. Measure the distance of travel both ways and mark you ram shaft. Odds are the spacers will be of different lengths depending on the geometry. When you make the spacers add 1/16" for system flex.

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 Post subject: Re: A-arm buggy
PostPosted: Tue Jan 13, 2009 5:08 pm 
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ody is smart. i think his buggy runs on flux capacitors.

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