Track Days/Motorsport

Motor racing is an expensive sport!

 

First thing I thought of as well, you would normally expect some type of locking mechanism

 

Unfortunately not. Hewland just specify a very high torque for tightening it, which I must have fallen short of last time, despite my 400lb/ft rattle gun.

 

Loctite 277 might be the go?

 

Only poofters use rattle guns

 

Correct

 

And Alfafest and Fiat nationals....
The attached is appropriate, just replace the word ‘motorcycle’ with ‘Ferrari’ and all’s well.
BTW, co-driver and I are still planning to go for a 10 day tootle around the country as there MAY still be a track day at Wakefield Park.
Image Unavailable, Please Login

 

Enough vibration can overcome any torque.

 

You'd know

 

Which is why we use lockwire in the aircraft industry as well as Loctite

FFS, I thought Hewland was a reputable company, maybe they mean you apply a specific torque on a NEW nut .... we use to change nuts on aircraft parts that were given a lifetime but I suppose the racing industry just assumes you use new parts on a rebuild

 

how many world championships were won by cars with Hewland transaxles?
you can't lockwire a rotating shaft.
you can't use loctite on a high torque assembly that needs to be undone regularly - in fact there are many, many places you can't use loctite, e.g. flywheel bolts, headbolts, the list goes on..

 

So does it actually need to be retorqued after every outing? Just curious...

 

Well normally they would manufacture a nut you can put a split pin through where the shaft has a hole drilled in it so it doesn't come off

 

...or wire or rollpin.. yes.

 

In any race team gearboxes are stripped and checked after every race meeting. Dog rings have a maximum design life of about 200 miles - the length of a F1 GP or an Indy circuit race.

 

Except the shafts are hollow oil ways, with a fitting on the rear cover that inserts into each end, which is why it isn't pinned. Hewland gearboxes have an oil pump and are pressure lubricated.

When it comes to a race car (or a Ferrari) you start from the assumption that very smart engineers design things for a reason.

 

How many smart engineers does it take to make up for a dumb driver?

 

Are we talking 3 seconds dumb?

 

You'll have to ask PP, he's the only person on here who drives a dumb

 

Fair enough but just because the monkeys have always done it this way doesnt mean it's the best idea
I remember Carl having to fix the auto levelling system on his dad's Mercedes

 

Lol at Carl fixing something

 

I'd have to see the timesheet

 

That's cruel

 

Made up a new set of leads today, I really like the MSD kits with 50ohm wire (1/10 of normal resistance) plus they include a neat crimping tool.

10 points for anyone who can spot what's wrong with the dissy cap

Image Unavailable, Please Login

 

it's not on the car