Will it ever end?

[Still trying]

Hi all I have an issue with removing the pinion from my AD 102 gearbox . I have tried repeatedly with lots of heat constant pressure and impact force but it will not budge even a little bit. I must let you know first I only have basic backyard shed tools to use (vice, clamp, butane blowtorch and 8 lb hammer) .

I am using the same method I have before with a 40 gearbox and it worked easily at that time.

I was wondering if the problem is the composition of metals in the 102 gearboxes? In a forty gearbox, you have a brass bush inside an aluminium casing, aluminium expands at a lower temperature than brass therefore the external pressure becomes less during the heating process where the aluminium expands in size before the brass allowing for less external pressure and you strike with force the pinion and bush move, job done.

But what (I) think is my problem is that with the AD 102 gearboxes you have the bushes encased in a ¼ inch or approx. 8mm wall thickness aluminium tube like the one in the picture.

When you heat the gearbox housing attempting to remove the pinion and bushes which are encased in the aluminium sleeve you are actually heating both the housing and sleeve at same rate, aluminium sleeve and housing expand at same “thermal expansion rate” ( got that from google) so I am not achieving anything during the heating process because both aluminium surfaces are still bonding together the same, because at say, 500 degrees for example, they are the comparatively the same size?
This is just my thoughts as I have no experience with this type of stuff and am trying to figure out why I cannot get the bugger out!
Any feedback would be greatly appreciated.
Cheers
Bob

[Keith.P]

I think the problem is the butane blow torch, they are fine for a meringues, but not so much for seagull gearboxes.

[Hugz]

I did this. Been told though not to heat in oven to 200.

https://www.youtube.com/watch?v=HQh7GZVrGjk

[Still trying]

Thanks for the you tube link Hugz but the only thing I'm allowed to put in the oven is meringues.

[Hugz]

Oh yes I've been hearing over the years about forbidden use of ovens and dishwashers. Wifes.... are they really worth it?

Why do brides wear white? So they are colour co-ordinated with kitchen appiances

[tambikeboy]

Oh yes I've been hearing over the years about forbidden use of ovens and dishwashers. Wifes.... are they really worth it?

Why do brides wear white? So they are colour co-ordinated with kitchen appiances

[Still trying]

Our stove is silver does that mean she is a ......?

[Hugz]

The Metallica look

This would make a great down the aisle wedding music... very apt.
The vicar will be rapt.
https://www.youtube.com/watch?v=uhBHL3v4d3I

Metallica
"In the name of desperation
In the name of wretched pain
In the name of all creation
Gone insane
We're so fucked
Shit outta luck
Hardwired to self-destruct
Go
On the way to paranoia
On the crooked borderline
On the way to great destroyer
Doom design
We're so fucked
Shit outta luck
Hardwired to self-destruct
Once upon a planet burning once upon a flame
Once upon a fear returning all in vain"

[Still trying]

Haa she likes opera most but thats ok cause she likes british seagulls as well. But also the new stove so the oven is out of the equation.

[flyguy]

Wives! can't live with them, not allowed to kill them

[tambikeboy]

Wives! can't live with them, not allowed to kill them

SAYS who. ....

[Keith.P]

Love is one long sweet dream, and marriage is the alarm clock.
Losing a wife can be hard. In my case, it was almost impossible, believe me I have tried.

[tambikeboy]

I've been stabbing mine with the meat dagger for years and she's still here. .... Charles keeps promising to come and get her it's all those brothers and the transit van that scares me. ....