Martin-Hadland

iTrader: (2)

Whats that Stevie? An ATB sort of thing???

Edit.. Just googled it an they have little plates..

carcollector

once u sorted all this i call ya for a mk1 prop thats a bit ´special´......

thanks for the bits, they are spot on m8 !

XRT_si

iTrader: (2)

I'd like to know more about them too.

I've seen they use plates like a plated diff but they don;t use the whole assembly and feature an 'S' shaped clip in the middle?

Martin-Hadland

iTrader: (2)

Propshaft all done and ready to fit 2wd prop is above for comparison



Just need to make a centre mount bracket now

stevieturbo

Yea, it's a weird one, dont think they are that good really. And they still have only a single diff pin through it. Although doubt you'd have any strength issues in the Firenza.
I just refuse to use any diff with a diff pin !!

The Ford Racing Torsen is an ATB, and usually around $600, bargain compared to some !

Although there are plenty of plated diffs available for the 8.8" and all at under $600. Generally most parts are pretty cheap for them

andrewg

i tried single piece and it was bad, esp cause it was 4.4 diff
gave one run at totb and went back to standard two piece

graham c

iTrader: (5)

dose any one no why tho

Martin-Hadland

iTrader: (2)

I'm going to see how the std diff gets on and then swap to a perrrrrlated type after.

stevieturbo

I guess you didnt read anything I posted ? Assuming it was a serious question ?

Martin-Hadland

iTrader: (2)

Flagpole anyone????

andrewg

Can't beat a plated!
Just stuck one in my new c63!

graham c

iTrader: (5)

no mist that one ste ill measure mine to moz and see how long it is

gordyshreds

Complete stab in the dark here with a blunt spoon, but has anyone used or think it would be possible to use 2 propshaft sections, joined with a Thomas Coupling in the middle?
http://heliwrench.blogspot.com/2008/...couplings.html
This show's the coupling for those that don't know.
We use these on our Helicopters to connect tail rotor driveshafts.

stevieturbo

For what purpose ?

All you're doing is introducing a weakness for no benefit. Little different to those stupid big rubber donuts the OEM use to reduce vibrations etc

@ graham.

It's overall length and diameter that matter, and of course material, although 99% of people here will be using steel. There are some online calculators for critical speed, havent a damn clue how half of them work though lol

The Mark Williams table above is easy to understand, and most shafts made in the US will be 3" diameter or larger.

But if you dont have any vibration issues, then you dont have anything to worry about. That said, you should never run the shaft to its critical speed as it will fail as the shaft is flexing violently even if it isnt visible ( and yes I did jack the car up and view it at speed lol )

carcollector

what info do you need to order me a 2 piece one ?

graham c

iTrader: (5)

My prop is 3 foot long will i get away with it ?

Martin-Hadland

iTrader: (2)

Well its certinally short enough, I'd try it and see.

Martin-Hadland

iTrader: (2)

Do you have a one piece prop that fits fine?? If so get Leigh to give it me.

graham c

iTrader: (5)

thats from skyline box to the diffbut ive got the alloy adaptor plate which allows me to bolt the cossie front prop to the box so ill have to loose the center mount so the prop will be a other six inch sorter

carcollector

stop posting and answer ur phone

graham c

iTrader: (5)

i wont be doing 140 any way i think depends how fast 500 horse dose the quarters really

Martin-Hadland

iTrader: (2)

If running a split prop you wouldn't try to make a small front section to fill the gap in your pic, you would shorten the rear section and move the mount back too.

Martin-Hadland

iTrader: (2)

Was on silent to stop dodgy foreigners calling me Tried to call back but your line is busy.

graham c

iTrader: (5)

woz going to make the back smaller but one piece prop, but i mite move the mount back now and keep the center part martin i to woz copying your prop martin till this thread

stevieturbo

It could be feasible to make a short section for that.

3ft is pretty short so it's unlikely to pose a problem but you'd need to determine your maximum shaft speed and whether or not you will ever reach anywhere near it.

http://www.wallaceracing.com/drivesh...ed.htm#modulus

graham c

iTrader: (5)

its all cosworth 4x4 running gear. same ratios so, fook no,s would suprise me if it would hit 130+

graham c

iTrader: (5)

am going to shorten the back and make a new center mount

graham c

iTrader: (5)

any more pics of your prop on the escort martin

scoooby slayer

iTrader: (4)

I didn't even consider this when I did my prop on the kit car, just checked and being as its only 20" long critical speed is 54451 rpm lol

graham c

iTrader: (5)

ive got a vib some were and at 45 miles a hour and need to find it soon