Sirion autoX build random questions

whats the general rule of thumb for balance between front and rear?

For your all wheel drive, stiffer rear, but not quite as stiff as for 2wd. I know I am not committing to a rule here, but Iā€™m not sure on how your gearbox will affect things. The softer end of the car gets more grip. Stiffen the rear to dial out understeer and promote oversteer. Depends on your driving style. Note also that the front strut is near 1:1 in lever ratio. Not sure on your rear ratio.

For example, mine is 1:1 on the front with 115lb. Rear is 1:2 with 400lb.So rear is near double the front. Front has factory sway bar but none on the rear.

Honestly I think it will behave much the same as fwd, unless the front loses traction because drive to the rear is through a viscous coupling. Technically if the rear loses traction the rear wheels canā€™t be driven any faster than the front.
So how do you go about calculating the lever ratio? The trailing arms on the awd are longer so I imagine this would affect it yes?

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So I figured out how to calculate lever ratio. So since the front is McPherson strut it would be pretty close to 1:1 and in the rear end of the awd the spring is pretty much vertical and the lower spring seat is in line with the axle so that would also be 1:1 so I guess Iā€™ll find out the rate of the eibachs on the front and double to work out what I need for the rear. I think I will need something between 200 to 300lbs

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Yesterday I went gokarting with all the guys from work, the track is inside an old parking building and runs through 2 levels. It was nice to have a long track with elevation changes ect. Im hoping to hit the karts at least once a month from now until the race season starts next spring so I can get some kind of practice. we did a 10min qualifying followed directly by a 20min race. I got the 3rd best lap time in our group but finished 6th overall (there was 9 of us there) but only because Ibo the turk thought it was a round of bumper cars and on multiple occasions he smashed me into the wall :confused: I donā€™t think thatā€™s too bad considering David, who came first, used to race Karts in Spain and there was less than a second between our best lap times.

Thatā€™s me on the left with the balaclava, all in all it was a nice day.

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Lol seems we both had Karting day yesterday

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What currency are they using on their website?

Their website uses USD but if you make an account on their website it changes to Russian. But they have an ebay store and an Amazon store. Best to get the part number from their website then search for it on ebay or Amazon.

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So they guy wrecking the daihatsus got back to me and no luck on the applause rear brakes, they really are hard to find here :disappointed:. Iā€™ve been thinking a lot about it, I will be in Aus in December/January and Iā€™m thinking it might be a good idea to grab some then and throw them in my check in luggage for the flight back. Any idea on price and weight for the calipers, handbrake cables and mounting plates? Maybe someone has a set laying around they will sell/ donate to the cause? Doesnā€™t matter if the calipers are not working, so long as the slide pins in the saddle are ok, I will order a pair of recoā€™d exchange mx5 35mm calipers and send the 30mm applause calipers in as the exchange.

If youā€™re really stuck for calipers then you can have my spare set. The ones I have on now will be coming off to make room for four spots and I wonā€™t be needing two sets of appluase calipers (there may only be one handbrake cable bracket). Rather than pull out/swap over the handbrake cable you can prob use an adapter. I have a Sirion rear axle with the backing plates but no handbrake bits (binned). So I canā€™t test fit the adapter, but you could take them with the calipers and see. I suspect they could go close to working as they mount to the caliper bracket and take up the 75mm or so of slack from the cable inner. I saw one yesterday while downstairs. If I see it again Iā€™ll take a picture (I have a detailed drawing of it somewhere). Iā€™ve done a few L200 rear disc conversions and mine was first, however, I ended up removing the handbrake brackets to use on someone elseā€™s car as the calipers did not have this part. So the point of the long story here is that, my handbrake cable is now attached to a bracket on the trailing arm instead of the caliper prob saving a couple of hundred grams weight.

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As always MrG, you are an absolute legend!
The calipers and mounting brackets would be awesome, but unfortunately Iā€™m a bit worried about using adapters for the handbrake cable, I would rather have factory applause cables to keep things looking factory and avoid any more issues with the TƜV man. But I really appreciate the info, if I canā€™t find any cables easy Iā€™ll take you up on your offer of the adapters though :grinning: where abouts are you located? Iā€™ll be flying to Brisbane then heading down to lismore to spend chrissy with the fams then possibly heading north to Darwin via Alice springs.

as for backing plates I Know Mr G used spacers on his backing plates. I wasnā€™t to happy with my welds so i made all the mods an original plate and then bought some 10mm plate and made backing plates by hand out of them.I traced one plate and scanned it so people could just download it and print it on to an a4 sheet of paper. as a rough guide. This is for an L200 but the bolt pattern etc should be the same for sirion and I had rear sirion drum brakes on it first. I dont know how it printā€™s out but this is the rough template.

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Oh yeah, there are the backing plates from an Appluasse that go with them. But they have had the dust shield removed.

You must visit. I am on Mt Tamborine, which is Gold Coast Hinterland. Maybe a Daihatsu gathering and do a meal, coffee or something like that. Mr and Mrs Evil are not to far away either.

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sounds good Mr G.

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That would be great

So I emailed eibach the other day with the part number for the front springs asking for the spring rate, they got back to me today and said the spring rate is 30N/mm
So using this conversion chart
http://people.physics.anu.edu.au/~amh110/coil_spring_rate_conversio.htm

The spring rate is about 180 lb/inch
Double that is 360, so I think if I canā€™t find anything better the Mitsubishi L200 springs at 435lb could still be an option.

You might try a 180 in the front with the 435 in the rear.

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Yeah thatā€™s what I mean, I will try and find something for the rear closer to 360lb but when there isnā€™t anything readily available I will go with 435 in the rear

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And you want at least rebound adjustment for the dampers at each corner.

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Plan is Koni inserts in the front struts and a pair of adjustable shocks from GAZ in the rear :grin: