Open gate manual gearbox

Open gate manual gearbox

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YoungRestorer

Original Poster:

206 posts

156 months

Monday 31st August 2015
quotequote all
Can any gearbox be made into an open gated manual? For example, would you just remove the cover, change the knob itself and pop a new gate on, and that be it?
Or is there more to it than that, like the manner of the gearbox itself? Substantial modification needed? What exactly are the specific characteristics as compared to a normal gearbox?
Badly explained and poorly set out, but I don't really know what I'm asking laugh

YoungRestorer

Original Poster:

206 posts

156 months

Monday 31st August 2015
quotequote all
Hamish Finn said:
You're not the only one.
Good point, well made laugh

For ease of comprehension: if I wished to convert a normal gearbox into an open gated one, would it be as simple as simply removing the leather cover? Or is there a big mechanical difference between the two that prevents conversion?

YoungRestorer

Original Poster:

206 posts

156 months

Monday 31st August 2015
quotequote all
Krikkit said:
Err... Wut?

Open gate boxes are just ones without a leather gaitor to hide the mechanism, it's made a feature of instead.

You could do the same if you machined a plate with the right spacings for how the gear linkage moved, but it wouldn't fit into the interior of most cars without looking ste.
And it is just as easy as that? Of course, there would be some problems in terms of looking st in most cars, but one would just have to remove the gaitor and fashion a custom something to slot on top?

YoungRestorer

Original Poster:

206 posts

156 months

Monday 31st August 2015
quotequote all
f1nn said:
Yep, pretty much. in theory anyway.

However, the reality may not match your expectations if you're trying to fit one to an old Clio (or similar) with a worn linkage!
I had been toying with the idea of a mockup for my XJ6 manual, and got thinking about the actual logistics of it, and whether it could be done

YoungRestorer

Original Poster:

206 posts

156 months

Monday 31st August 2015
quotequote all
Pebbles167 said:
Unless your gearstick moves in very straight lines and has a very short and stiff throw, I'd imagine you'll forever be catching it when changing between 2nd & 3rd and 4th & 5th. Fitting a quickshift gear lever first could help this.

Give it a try though, it'll be interesting to see.
This is exactly what I was looking for! Quickshift gear lever? Is that all that is needed to change the gearchange to short and stiff throws?

YoungRestorer

Original Poster:

206 posts

156 months

Monday 31st August 2015
quotequote all
Pebbles167 said:
Some cars with mechanical linkage can be fitted with an alternative gear lever that changes the pivot point, shortening and stiffening the throw. Your post got me thinking that now mine is fitted i could probably do exactly as you say. What car do you drive?
1997 Jaguar XJ6: its a getrag 290 I think

YoungRestorer

Original Poster:

206 posts

156 months

Saturday 5th September 2015
quotequote all
All good thoughts guys: I don't think I'll bother for the time being, but I'll see if I can't get the gaiter off myself to have a look (needs replacing anyway!)