The Brumbyrunner Project
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- brumbyrunner
- General Member
- Posts: 1743
- Joined: Mon Apr 10, 2006 10:00 am
- Location: SEQ
- brumbyrunner
- General Member
- Posts: 1743
- Joined: Mon Apr 10, 2006 10:00 am
- Location: SEQ
A longer stroke shock is not nessessarily going to run cooler as it will be moving faster. There are lots of opinions on what is the best motion ratio. Close to the wheel the shock must move faster and heats up, further away and it works harder and heats up (and blows apart).
Anyway, back to the business at hand.
You can see the outline of the trailing arm in this pic. It's not much but it's a start.
Looks too short yet it's twice as long asthe original. Any longer and I'd have to channel the floorpan and raise the seats so this is it until I go full tubeframe. This is where the tyre will sit.
Anyway, back to the business at hand.
You can see the outline of the trailing arm in this pic. It's not much but it's a start.
Looks too short yet it's twice as long asthe original. Any longer and I'd have to channel the floorpan and raise the seats so this is it until I go full tubeframe. This is where the tyre will sit.
Settlement Creek Racing
You mean close to the wheel as in verticle ie the front of the hummer, and further away like the rear end of most buggies ? How about bore size or is that something you leave for old mate to work out ?
Is the rear wheel staying at factory position, appart from the extra track?
Suspension is a curiousity of myne
Is the rear wheel staying at factory position, appart from the extra track?
Suspension is a curiousity of myne
There is only one thing you must do in your life. Everything else is a choice.
has anyone invented water cooled shocks ?
typed "water cooled shocks" in google and surprisingly a few hits.....
could be what you need
interesting read http://www.patentstorm.us/patents/53928 ... ption.html
the full pdf is a good read, register to get it (free) or PM me an email to send it to.
looks like Aussie inventor for that patent:) and yes for rally application.
typed "water cooled shocks" in google and surprisingly a few hits.....
could be what you need
interesting read http://www.patentstorm.us/patents/53928 ... ption.html
the full pdf is a good read, register to get it (free) or PM me an email to send it to.
looks like Aussie inventor for that patent:) and yes for rally application.
- Outback bloke
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- brumbyrunner
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Don't really understand what you're asking? There are a lot of talented suspension gurus out there to ask (ok, maybe not that many) who know so much more than I do.White_Lightning_Rex wrote:You mean close to the wheel as in verticle ie the front of the hummer, and further away like the rear end of most buggies ? How about bore size or is that something you leave for old mate to work out ?
Is the rear wheel staying at factory position, apart from the extra track?
I was merely pointing out that Robby Gorden finds it better to run a single shock per corner in his Dakar cars when the trend is to use two. One serves as the coil carrier and the other can be massive and have external bypass tubes that the coilover cannot.
The rear wheels are staying in the wheelarch where they were before. If I move them rearwards as everyone suggests, it moves the balance point forward (bad).
I've spoken to a few racers that've tried it. None with any success. Water boils to easily and it's heavy and complicated. It is better to build the shock larger with more oil to stay cool. Here I go talking about stuff over my head again.fredsub wrote:has anyone invented water cooled shocks ?
Settlement Creek Racing
- brumbyrunner
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What you can see is the outside wall of the trailing arm. It is welded to the Subaru bearing carrier and hangs off the new mount in the back of the cab. I still have to design and build the inner part of the arm.Outback bloke wrote:So is that trailing arm fitted in place? I mean permanently, or are you still designing?
Settlement Creek Racing
- Outback bloke
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I wasn't going to suggest moving the rear anywhere. It seemed to be fairly well weight balanced on the scales at Alice.
I only ask you about suspension because you know more than me. Might just sit back and let you get on with it.
I only ask you about suspension because you know more than me. Might just sit back and let you get on with it.
There is only one thing you must do in your life. Everything else is a choice.
- brumbyrunner
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- Joined: Mon Apr 10, 2006 10:00 am
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It's slow going. Trying to get everything lined up and square. Changed the trailing arm shape 3 times this morning and found that the rear track will still be narrower than the front or I will lose wheel travel. The rear guards need another 100mm cut out of the top and the fuel tank might have to be raised to clear the driveshafts.Outback bloke wrote:I agree. The bad bit that is.
So it is coming together as planned? Looking the goods?
I'll get there.
Settlement Creek Racing
- brumbyrunner
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Got some progress to report. After days of pondering and trying different setups I've tacked together the pass. side trailing arm. Feels good to be able to see it. Looks good too. I've got a bit more sheet to cut out and then finish welding. I'll try to get some pics tomorrow. I have managed to duplicate the front track width and still have at least 14" of wheel travel. Took a lot of mucking around to get it right. I wonder if there would be a market for long travel rear suspension?
Anyone want to increase their factory 5" of wheel travel (more if you've got a lift kit)?
Anyone want to increase their factory 5" of wheel travel (more if you've got a lift kit)?
Settlement Creek Racing
- brumbyrunner
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- vincentvega
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- brumbyrunner
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I will weigh the two arms when I'm finished but it's not as heavy as it looks.fredsub wrote:How will the "sprung" weight compare with the original ?
also consider putting another support from the apex of the triangle for additional strength?
I have considered that a lot but there has to be a compromise between strength and weight. I also considered boxing the whole area but it would be very suseptible to dints, especially the bottom. Once I mount it back up or maybe after a test drive I might decide it needs more support but at the moment I think it's strong enough. The main advantage in building these myself over buying them from a supplier or fabricator is that I know whats underneath and what material I've used.
Welcome home.vincentvega wrote:awesome Stuart. Looks solid as
im back by the way - need to get this LCD screen up to you
The package I wanted to post to you got delivered to Brett's house instead. You just need to pick it up (and hang it somewhere).
Settlement Creek Racing
- Captain Obvious
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looking good, what pivot are you using to attach the arm to the car?
[SIGPIC]http://www.ausubaru.com/forum/image.php ... 1468060434[/SIGPIC]
The 4x4: 2004 Nissan Navara d22 ZD30 dual cab.
The Wifes car: 2005 SG9 Facelift forester 2.5l auto XS
The 4x4: 2004 Nissan Navara d22 ZD30 dual cab.
The Wifes car: 2005 SG9 Facelift forester 2.5l auto XS
- stamp_licker
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- brumbyrunner
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- Joined: Mon Apr 10, 2006 10:00 am
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- Captain Obvious
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- Location: maryborough
[quote="brumbyrunner"]Say what?
what sort of joint is the a frame linked to the car with? eg rose joint or just a bush type setup?
what sort of joint is the a frame linked to the car with? eg rose joint or just a bush type setup?
[SIGPIC]http://www.ausubaru.com/forum/image.php ... 1468060434[/SIGPIC]
The 4x4: 2004 Nissan Navara d22 ZD30 dual cab.
The Wifes car: 2005 SG9 Facelift forester 2.5l auto XS
The 4x4: 2004 Nissan Navara d22 ZD30 dual cab.
The Wifes car: 2005 SG9 Facelift forester 2.5l auto XS