Hi guys just wondering what the difference between hydro and dry suspension top arms are?
Cheers Jack

Hi Minieleven11
Where the ball and socket fit in the top arm this is closer to the ball joint, so if you fit these to a rubber cone it will make your spring rate harder, than the std arms, good for race cars
Graham Russell

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"It's better to be not informed than ill-informed"

Did hydro arms have stubs for shock absorber mounts?

The hydro arm has a bolt through the shock mount hole to fit the bump stop.

They had a bolt to hold the bump stop on, however it was only 1/4" in diameter for the hydro arms. For standard shock mounts they need to be 3/8".

Cheers.

They are bloody hard to drill, on the car. Those arms are tuff stuff.
I used M8x100 Grade 12 Unbrako capscrews instead, and bushed the lower shock bushes to 8mm.
Been fine the last 10 years or so.

see http://www.ausmini.com/forums/viewtopic.php?t=12180

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DrMini- 1970 wasaMatic 1360, Mk1S crank, 86.6HP (ATW) =~125 @ crank, 45 Dellorto (38 chokes), RE282 sprint cam, 1.5 rockers, 11.0:1 C/R.

Hi
We just run a 5/16 high tensile bolt in our race cars no problems,drill it out with a hand drill
Graham Russell

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"It's better to be not informed than ill-informed"

Nah, they`re 5/16ths std

drill to 3/8 for shocky fitment

& yeah right GR,,, you can do my next set with a hand drill,,, i`ll sit back eating some wagon wheels & sipping on my cup(s) of tea watching you

crickey , next thing you`ll say is that mini crown wheels are soft & can cut with a kitchen knife yeah>???

Merry Christmas

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No offence intended here but--> anyone writing a book about minis 30 years ago may not have experienced such worn or stuffed-with components as we are finding these days.

You should put your heart & soul into everything you do.

Hi Matt
Ya gota learn to sharpen drills matt, there not hard matt a little tough may be but there not that hard.
Yes i can machine the crown wheels out but not with the kitchen knife
i use that to wedge cranks
Graham

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"It's better to be not informed than ill-informed"

oh!!! do drill bits need to be sharp??? Damn,,, i thought there was "something" i was supposed to do

& as for wedging cranks, --> i just get my girlfriend to sit on them & tow them on a rope behind the V8 kombi on the concreat footpath... isn`t that how it`s supposed to be done???

I had to machine the crown wheel teeth off to fit my motorbike sprocket on for my R1 hillclimb special,,, Unkle Bruce Ayers wasn`t happy with me wearing out/breaking a few of his ceramic tips it just meant i bought more than the usual amount of Carlton Cold for him that week


As for my CNC light-flywheels,,, well,,, CNC means "Chunks of Nastey Crap" doesn`t it???

_________________
No offence intended here but--> anyone writing a book about minis 30 years ago may not have experienced such worn or stuffed-with components as we are finding these days.

You should put your heart & soul into everything you do.