Thread: combined trailing arm mount/body outrigger

Originally Posted by uninformed

hmmmm......then why do I need a handbrake on an incline and not on flat level ground.

Because the acceleration reaction has a component pointing backwards.

Originally Posted by uninformed

I think im going to struggle with this one

Nah, just accept that they're the same, optimise your suspension for the flat acceleration and it'll climb well enough.

problem is, flat ecelleration is more forgiving than hill climbing rutted tracks. For a good launch on flat you just need AS so it gets power down and goes forward...go up a hill climb, and the same AS, if high, will launch but straight away try and drive the axle under the rig instead of pushing the chassis forward. Yes there is throttle control, but with the response of the LR throttle it may be more forgiving to have a little less AS....but not so little the bum squats AND that the front end does not get loaded by the rear (think weight in tyres type of thing)

Originally Posted by uninformed

problem is, flat ecelleration is more forgiving than hill climbing rutted tracks. For a good launch on flat you just need AS so it gets power down and goes forward...go up a hill climb, and the same AS, if high, will launch but straight away try and drive the axle under the rig instead of pushing the chassis forward. Yes there is throttle control, but with the response of the LR throttle it may be more forgiving to have a little less AS....but not so little the bum squats AND that the front end does not get loaded by the rear (think weight in tyres type of thing)

Which is why you are putting in longer links in the first place. Minimise change in AS with suspension motion?

thats it

not sure if I should trust the word of a cyclist atm, in light of everything

you would need the handbrake on flat ground to stop your vehicle rolling away if it was subjected to a force equal to one G in the horizontal direction.

Originally Posted by slug_burner

you would need the handbrake on flat ground to stop your vehicle rolling away if it was subjected to a force equal to one G in the horizontal direction.

yep, but park it and it will stay put with no brakes, park it on a incline and it will roll.....my point was that I feel that the COG must change from flat to incline due to this among other things....that is the same things happen differently

im probably very wrong, but it doesnt really matter as the point of my new TA is to deal with the physical limitaions of what can be done. As Dougal pointed out, all Im doing is reducing the change in stock set up, static height is important but changes as soon as you drive. If I can keep the changes less, then in THEROY it should be better

I recieved a very friendly phone call from Qld Dot yesterday. I have been informed that as of Nov 1st, the new vehcile code comes into play here in Qld. They advised me to wait till after that and then contact a approved ENGINEER (read not just a blue plater). Saying that the new code is more flexable and that it will be up to the engineer to deem whether the idea is doable: that is, safe and within the new code.

So it sounds like its a good chance (at this stage) But I have that sinking feeling, like most things in life "if you want to play, you's got to pay" Its sad its should cost so much to do something by the book and safe, but such is life.

I asked for a list of approved engineers in my area:

Queensland

Clinton Harry
38 Blackwood Road Geebung Qld 4034
0438 738 454

Alan Marburg
P O Box 9385,
Wynnum Plaza Qld 4178
0410 669 075

Len Emerick
LW Emerick & Assoc.
PO Box 1609
Hervey Bay Qld 4655
4128 6867

Darren Dakin
Altra 9 Pty Ltd
PO Box 5570
Brendale Q 4500
0431 382 789

Richard Larsen
101 Lochinvar Road,
Upper Kedron Qld 4055 3851 1066

Werner Ihle
3/28 Activity Cres
Ashmore Qld 4214
0418 551 331

Garry Bow
PO Box 120,
Strathpine Qld 4500
3881 1355

Timothy Bartrop
9 General Macarthur Place
Redbank Qld 4301
3280 8202

Kevin Walsh
Walsh Engineering Solutions Pty Ltd
478 Boundary Street
Toowoomba Q 4350
4634 3344

Bruce Hartwig
Sapid Pty Ltd
25 Raven Street,
West End Qld 4101
32551621

Graeme Presley
115 Radford Road
Manly West 4179
3348 2211

Bruce Johnson
4 Colworth Street, Sunnybank Hills Qld 4109
0413 137 201 / Sunnybank 3344 1803; Cairns 4097 6731

David Blythe
DB Autotech
26 Nicholson Avenue
Salisbury Qld 4107
0407 756 870
www.dbautotech.com.au

Maxwell Evans 42 Lincoln Green Drive,
Forestdale Qld 4118 3800 8636

Willem Saarberg
24 Slatter Court, Brendale Qld 4500
3396 6033

Trent McMahon
OS Imports,
2 Solander Street, Carina Qld 4152
0437 126 853

Earl Gilchrist 4/70 Redland Bay Rd Capalaba Qld 4157
0417 229 723
John Allen
P O Box 80,
Thuringowa Central Qld 4810
4788 8864

Phillip Harris
Pipers Glen
315-331 Hein Road, Buccan Qld 4207
5546 3126

Timothy Gregg
813 Upper Ormeau Road,
Kingsholme Qld 4208 5547 5879

David Turner
Vehicle Safety Certifications & Heavy Vehicle Certifications GPO Box Brisbane 4002
0434523282

Raymond Miller
6 Coughan Street
The Gap Qld 4061
3300 4700

Lindsay Stone
Livingstone Automotive
36 Coates Street,
Mount Louisa Qld 4814 4774 8807

Christian Arendt
4 Progress Road
Rupertswood Qld 4817

if anyone has used or knows of any of the above listed, please pm me with good or bad info

cheers
Serg

Originally Posted by slug_burner

you would need the handbrake on flat ground to stop your vehicle rolling away if it was subjected to a force equal to one G in the horizontal direction.

True for more and less than 1G also.