Thai OBC Sierra(s?)

Post by **Gwagensteve** » Fri May 18, 2007 4:01 pm

I've been having a look at the OBC site/photos and that Thai sierra looks like the business.

I'm not buying in to its eligability, if it should/shouldn't have won, who was helping them when winching etc and actually don't really care much about the OBC, but I would like to know more about the car.

Does anyone have any tech on it?

Steve.

Post by **v840** » Fri May 18, 2007 4:35 pm

From reading the OBC thread it apparently had no firewall and a turbo a couple inches from the navi's feet.

Incidentally, any real tech on them would be sweet. Going from the photos on the obc website it certainly has width.

Post by **GQ4.8coilcab** » Fri May 18, 2007 5:08 pm

v840 wrote:From reading the OBC thread it apparently had no firewall and a turbo a couple inches from the navi's feet.

Incidentally, any real tech on them would be sweet. Going from the photos on the obc website it certainly has width.

and going by the videos a fast winch

if those zooks were ccda compliant they would really give the big boys a run for there money in the vic events, there winch will slaughter people.

Post by **grimbo** » Fri May 18, 2007 5:14 pm

I always wanted to enter the OBC in my Zuk. Strengthen the diffs, put some 35 x 15 Swampers or the like on to float over the sand and mud. A supercharged 1.6 auto with f&R lockers and a super fast winch. I reckon you could nail quite a few stage wins, you'd loose out on any straight speed stage I reckon but as long as your navigation skills were good and you could keep the car together I reckon it would be a good combo

Post by **GQ4.8coilcab** » Fri May 18, 2007 5:20 pm

I found the photos i was looking for. The winch is nicknamed gods winch overseas particularly maylasia. From my understanding they are often a small car diff pumkin welded up, with an axle out of one side connected to a drum. With diff ratios being around a 4:1 ratio they are incredibly fast. If you know what you are doing you can get your wheels to spin at the same speed as the winch

Post by **grimbo** » Fri May 18, 2007 5:24 pm

cool how are they powered, electrically or PTO?

Post by **GQ4.8coilcab** » Fri May 18, 2007 5:36 pm

pto
i cant get my head around how they are driven mid mounted. Out of the box the pto shaft goes forward, im puzzled how it goes back to mid mount.Kym bolt has a mid mounted PTO, next time i see it, ill get some spy pics

Post by **v840** » Fri May 18, 2007 5:39 pm

I think the obc sierra's one was PTO

Wouldnt be the first time Ive been wrong though

EDIT: too slow

Post by **Aerenandmel** » Fri May 18, 2007 6:24 pm

The good old god winch, there are a few guys on pirate with them. they reakon you can tear a car in half with one. Ive heard off guys using Datto 180b diffs, just machining one of the axles to suit. you run it off a pto.

Post by **Squik** » Fri May 18, 2007 7:01 pm

The minute the downpours hit, these boys were basically back in their own backyard... no wonder they won

Post by **jono_785** » Fri May 18, 2007 7:49 pm

can someone post a link to the OBC forum. cannot seem to find it..
ta

Post by **moose** » Sat May 19, 2007 9:49 am

Post by **v840** » Sat May 19, 2007 11:18 am

jono_785 wrote:can someone post a link to the OBC forum. cannot seem to find it..
ta

Not a forum, just a thread. But here it is:
http://outerlimits4x4.com/viewtopic.php?t=89099

Post by **Dozoor** » Sat May 19, 2007 1:17 pm

Sombody tell me thats not a transaxles bolted to the back of that motor

Post by **Aerenandmel** » Sat May 19, 2007 1:51 pm

moose wrote:

I wouldnt think you would need to use the heater to often.

Post by **CHOPS1** » Sat May 19, 2007 2:14 pm

For a couple of bucks, a bit more checkerplate and no bastard can complain! its clearly a good set up and i bet all the bigger boys will be trying to get different winches now!
And all the dash instrumenst and air intake up high is was perfect for the the conditions.
I always find it funny, zooks are always up against bigger and more powerful rigs every comp, rarely winning! But do they complain? No, but as soon as a zook is winning or up there its waaaa waaa waaa! get over it!

Chop

Post by **=SKB=** » Sat May 19, 2007 3:26 pm

I wonder what the legalities are of plating your floor plan with alloy plate rego wise. Easy solution for a rusty floorpan...

Anyone know or done something similar?

Post by **ofr57** » Sat May 19, 2007 3:38 pm

is that a turbo sitting through the firewall

or is this another pto winch thingy

Post by **suzuki boy** » Sat May 19, 2007 4:08 pm

It might be the best thing to do to a zook! BUT it won the OBC!

Post by **ofr57** » Sat May 19, 2007 4:22 pm

FARK its wide

Post by **CHOPS1** » Sat May 19, 2007 4:56 pm

its got toyota surf rims, so i asume they would be lux or cruiser diffs!

Chop

Post by **Dozoor** » Sat May 19, 2007 7:51 pm

ofr57 wrote: is that a turbo sitting through the firewall

or is this another pto winch thingy

Yes its a turbo to the left , and the thing on the right is a starter motor,

mounted top side on the bell housing , leading me to some thoughts it maybe a transaxle .

Post by **nicbeer** » Sat May 19, 2007 7:59 pm

no mention of motor. what motors have starter on that side of block

Post by **Dozoor** » Sat May 19, 2007 10:09 pm

nicbeer wrote:no mention of motor. what motors have starter on that side of block

(just musing myself)

By the small amount of running gear i can see .

Either a front wheel drive motor box placed north south with transaxle shafts running derectly to the diffs , or the foward facing shaft running the winch , rear shaft to a reversed ratio transfer case (high range giving 1 somthing to 2 and low 1-1 this is to reverse the ratio of the transaxle so as to give a resonable top speed in high range ) would still = 4 odd to 1 low range

The starter if that is what it is looks directley on top of the box at the Rear of the block not on the side .

Motors with starter setup like that are useually transaxle
just about all types suz ,toy , dat , mit, ect
and honda which if used in this way would have the output on the other side ( hondas rotate in a different direction )

variations even subaru although in this case the would use rear out put to a transfer, i think this would be to long a setup in this case as the motor is well back.

Just some thoughts

we thought about biulding a zook with a transaxle setup , so as to delete the wieght of the transfer.Yu can get the engine and box in there
but you really need the diff pushed foward and the fire wall punched back to get enough distance for a front shaft of usable length .

Post by **moose** » Sat May 19, 2007 11:43 pm

it could be a transaxle set up ....
(bear with me)
run it in nth-sth config. with the drives still out the sides , then run drives from them !!
1 drive to the transfer case , the other drive (both with disconnects) to the winch !!
this would accomidate the diff offsets !!
therefore , disconnect winch & drive , disconnect drive & run the winch .........
5th gear full noise on the winch !!!!!!!

Post by **fool_injected** » Sun May 20, 2007 12:12 am

Heres how the army does 6x6 Landrovers
Just to give you an idea on how one works, same principle

Drive to the third axle is by a separate propeller shaft taking power from the transfer-case power take-off (PTO). This PTO takes drive from a gear on the transfer case intermediate shaft and rotates at the same speed as the front (1st) and rear (2nd) prop'-shafts regardless of whether hi-range or lo-range is selected. The 3rd prop'-shaft passes over the second axle and is jointed, incorporating a c.v. joint, where it does so. In this way extreme articulation of the two rear axles is possible

Post by **ofr57** » Sun May 20, 2007 1:06 am

moose wrote:it could be a transaxle set up ....
(bear with me)
run it in nth-sth config. with the drives still out the sides , then run right angle drives from them !!
1 drive to the transfer case , the other drive (both with disconnects) to the winch !!
this would accomidate the diff offsets !!
therefore , disconnect winch & drive , disconnect drive & run the winch .........
5th gear full noise on the winch !!!!!!!

= F1 winch

Post by **Squik** » Sun May 20, 2007 8:48 am

Being with Tuff Truck and being aware of all the CCDA stuff... Yeah, ok they won the OBC, congratulations...
But why are all the competitors forking out CCDA fees etc ,and then a vehicle that doesn't pass (correct me if I am wrong please) is allowed to even enter?

Not sour grapes... they are awesome Zooks and I'm sure they've now hatched a few ideas here... but we get hammered by the CCDA then this happens

Post by **Dozoor** » Sun May 20, 2007 12:53 pm

Squik wrote:Being with Tuff Truck and being aware of all the CCDA stuff... Yeah, ok they won the OBC, congratulations...
But why are all the competitors forking out CCDA fees etc ,and then a vehicle that doesn't pass (correct me if I am wrong please) is allowed to even enter?

Not sour grapes... they are awesome Zooks and I'm sure they've now hatched a few ideas here... but we get hammered by the CCDA then this happens

I have just spent the last four hours sitting here typing a huge response to this post sharon , and Deleted it about five times.

CCDA rules are all but a guide line .

The same type of thing happens at TT every year .

First i believe in total equal opitunity , any RULE, RULING ,CLAUSE
That places any competertor at a disadvantage be it Performance or finacialie should be ammended.
Its impossible to have fair competion otherwise.

Thats all ,

after all that i still had to edit this one

Post by **Squik** » Sun May 20, 2007 1:34 pm

I know where you are coming from... too many 'grey' areas in every event...

It just seems there are governing bodies everywhere ready to take money, but nothing seems to be the same across the board... too confusing.
I just hate seeing one competitor hassled over a window net/roll cage/whatever in a Class ?? event... and then another not in another event of the same supposed class...

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Thai OBC Sierra(s?)

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