Recent Posts

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11
Tvan Tvan / Re: Tvan & Ranger wheels
« Last post by Mal.W on November 29, 2019, 11:53:55 AM »
Thanks Luke.
I never thought about the heavier section of the rim being further from the centre and the flywheel effect this would cause.
Cheers
Mal
12
Tvan Tvan / Re: Tvan & Ranger wheels
« Last post by luke on November 28, 2019, 06:50:53 PM »
Hi Pete. I was just curious.
A 32 x 11.5 x 15 tyre has the same rolling circumference as a 265 x 70 x 17. So shouldn’t the braking performance be about the same even though there is a 2” diameter difference

Size (total diameter) does matter, but so does the weight distribution, and how far from centre the bulk of the weight is.

With a bigger rim, the main part of the rim is further out, and the entire weight of the tyre is further out.  This increases the rotational inertia, which for a trailer means more breaking force is required to slow it down.  For a vehicle, the rotational mass also means more force is required to get it rolling. (This will apply to both increasing the rim size, or going for a larger tyre)
(Think about the energy to start/stop large fly wheel's which have a large outer mass)

At the end of the day it comes back to the entire rig.  If you have enough torque and stopping power to tow it all safely, then it's all good. (providing you meet all the other state regulations, etc)
13
Tvan Tvan / Re: Tvan & Ranger wheels
« Last post by Mal.W on November 28, 2019, 12:13:45 PM »
Hi Pete. I was just curious.
A 32 x 11.5 x 15 tyre has the same rolling circumference as a 265 x 70 x 17. So shouldn’t the braking performance be about the same even though there is a 2” diameter difference

Cheers
Mal
14
Tvan Tvan / Re: Tvan & Ranger wheels
« Last post by Pete930 on November 28, 2019, 07:07:50 AM »
Hi Mal, to keep the overall diameter the same then on a 17 inch rim you would be running a lower profile tyre which for off road purposes is not ideal and with reduced side wall height then more prone to damage when tyre pressures are reduced.

An example is my works trailer originally ran 14 inch wheels on it, my Tekonsha brake controller set to 6volts would just about lock them up with little to no effort.

My Tvan with 16 inch rims and standard size tyres I have the controller set to 9volts output to get somewhere close to the same efficiency, since I’m using the same car, same controller, the weights of the two things being towed are similar the only difference is the wheel / tyre size, hence my comments above.

Also looking at caravans all day long the size of wheel /tyre combo that the manufacturers seem to change up to 12 inch brakes is the 16 inch and above.

Folk can run whatever wheel tyre they can squeeze under the guard, I just like them to be fully informed of potential issues / effects before they go down that path.
15
For Sale or Wanted / Re: For Sale - 2015 Tanami
« Last post by Ranger on November 27, 2019, 09:24:24 PM »
And more pics...
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For Sale or Wanted / Re: For Sale - 2015 Tanami
« Last post by Ranger on November 27, 2019, 09:17:14 PM »
More pics...
17
For Sale or Wanted / For Sale - 2015 Tanami
« Last post by Ranger on November 27, 2019, 09:14:37 PM »
Hi guys,

This 2015 Tanami TVAN is a one owner TVAN that has only travelled about 15,000km and mostly on bitumen. It has always been garaged when not in use and at $20k below replacement cost, it represents very good value for anyone looking for a 2nd hand TVAN in excellent condition.

In addition to the standard Tanami specifications, this TVAN was also ordered with the following options:
•             Full canvas awning
•             Rear insect screen for quick overnight stops
•             Half front storage box with fridge slide
•             47L ARB fridge
•             2nd 105Ah battery with 25A charger upgrade
•             300W inverter
•             60W roof mounted solar panel
•             Victron battery monitor
•             Side wall storage pockets
•             Wheels to suit Toyota Hilux/Prado stud pattern and offset, fitted with 265/75R16 Goodyear Wrangler A/T tyres
•             Stone Stomper stone guard

The current owners have also recently installed a brand new ARB roll out awning on Baron's custom stainless brackets and fitted a new upgraded high density foam mattress. It has just had a full service with a new set of wheel bearings and seals installed, and will be supplied with a current RWC.

Asking price is $42,000 and it’s available for immediate sale. Don’t hesitate to call or email if you have any further questions - I'm more than happy to send additional photos via email or arrange interstate transport for any interested buyer.

Cheers, Jason.
18
Tvan Tvan / Re: Tvan & Ranger wheels
« Last post by Mal.W on November 27, 2019, 08:39:41 PM »
Pete930
Quick question
If you go from 15” to 16 or 17 but the diameter of your tyre doesn’t change shouldn’t the braking efficiency be the same?
Cheers
Mal
19
Tvan Tvan / Re: Tvan & Ranger wheels
« Last post by Pete930 on November 26, 2019, 08:27:38 AM »
Just on the up grade to the larger rim / wheel size from 15 inch to 17 inch just be aware that you will potentially loose a little brake efficiency on the Tvan due to the larger rolling diameter. The 10 inch brakes that the Tvan have work really well with 13 to 15 inch wheels, lose some efficiency when going to a 16 inch rim that I run on our MK III then I cannot comment first hand about going to 17 inch.

Having said that I run a mobile caravan service and repair centre so am very very familiar with what Tvans and caravans run etc.

You will see most caravan manufacturers run ten inch brakes up to 15 sometimes 16 inch, then from 16 to above they run 12 inch brakes. You can go down the path of a brake upgrade but it is not a simple unbolt and bolt on the new stuff, things called anchor plates need to be repositioned etc and the components themselves are very expensive in 12 inch.

Just something else to consider before you go down that path, if like most of us, you will think about all of this, research it to a big degree, then end up keeping it as is and go bush to have some fun.

If you want further info or to chat pm me your number

Pete.
20
Tvan Tvan / Re: Tvan & Ranger wheels
« Last post by luke on November 25, 2019, 10:21:00 PM »
At the end of the day don’t stress too much re matching up the wheels, ok concept but definitely not an essential thing to do, unless you have no idea on how to think outside the box on roadside repairs.

Lots of folk spend mega dollars going through the suspension swap but I doubt that many would actually use the tugs tyres on the Tvan anyway.

Thanks Pete, and I agree with what you're saying which is why i'm not too keen on getting the tvan re-done.

As for the tvan wheels, the tyres need to be replaced anyway so I thought it might be worth upgrading the 15" sunraysia's to 17 at the same time.  I won't be too upset if all the rim's aren't exactly the same, but if they can be close then I may as well.
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