Short shift adaptor

[keith84_hk]

Hi folks,

 

I am developing a short shift adaptor which will fit all V6s with EA60 gearbox.

The idea was taken from LotusTalk where you move the original pivot point inwards the shift lever, to create a shorter throw, which reduces the vertical (forwards/backwards) throw by approx 30%. More info below

LINK : https://www.lotustalk.com/threads/short-throw-shifter.123965/

But instead of drilling the lever, I decided to make an adaptor which requires no drilling or risking damaging the lever.

So the first prototype arrived a week ago and I have waste no time to get it fitted myself and I am so happy to say it WORKS! And it works brilliantly!

The shortened throw reminds me the good old 997 GT3 shifter although the Porsche still has the edge in terms of 'Short' throw.

The change feels more weighted as well as you now need a bit more ''push'' to change the gear, but which I am talking about a TINY amount there.

Although the adaptor now fit tightly with the lever but there are few adjustments still needed before I can get it perfect, so more updates will follow

 

[KIMUTAKU]

Looks well made and a proper short shifter solution for the community!

 

 

[TBD]

Love it! Keep me informed and put my on the order list.

 

BTW: That was my post on Lotustalk. Meanwhile into the third Lotus and would eagerly do the mod again.

[keith84_hk]

@TBD Kudos for such brilliant idea! Surprised no one actually make the move of the adaptor so I thought I'd give it a go.

I will be receiving the second mock up by next week and will keep you posted.

I have no intention to make money from it so I am going to make few and give it to anyone who are interested

@TBDyou are on the list indeed.

[nordschleife666]

I am interested, does it fit the new shifter cars?

[Schnitzel]

I’m interested too, so please let me know once you’ve got it setup.

[keith84_hk]

15 hours ago, nordschleife666 said:

I am interested, does it fit the new shifter cars?

Yes it does mate, will put you on the list 

5 hours ago, Schnitzel said:

I’m interested too, so please let me know once you’ve got it setup.

Absolutely, will put you in 

[C8RKH]

Would this work on the Evora too?  Just a thought.

[keith84_hk]

Yes it will, we're all using the same EA60 gearbox with the same shift lever. Just the crossgate lever is different for later models (Exposed shifter) but we are not touching that here.

[Martrack]

What is it made from ?
Would have to be solid enough not to fail / break, especially considering the additional "push" needed to engage the gear.
Many thx 👍

[keith84_hk]

The current mock up is 3D printed in Stainless steel, but I am thinking CNC it in aluminum for the production batch. Should be robust enough?

[C8RKH]

1 hour ago, keith84_hk said:

Yes it will, we're all using the same EA60 gearbox with the same shift lever. Just the crossgate lever is different for later models (Exposed shifter) but we are not touching that here.

Ohhh. Put me down please and thank you. Happy to help re contribution to costs as you should not be out of pocket.

[Martrack]

5 minutes ago, keith84_hk said:

The current mock up is 3D printed in Stainless steel, but I am thinking CNC it in aluminum for the production batch. Should be robust enough?

The cylinder on the adaptor is fairly thin (5.5mm), depending on the hard push I wonder whether or not aluminium would finally break here...
Stainless steel would be much stronger, but certainly at a higher production cost 😐

[keith84_hk]

1 minute ago, C8RKH said:

Ohhh. Put me down please and thank you. Happy to help re contribution to costs as you should not be out of pocket.

Absolutely! Will put you on the list mate 

It's fine with the cost as I am planning to make 10 sets anyway  

2 minutes ago, Martrack said:

The cylinder on the adaptor is fairly thin (5.5mm), depending on the hard push I wonder whether or not aluminium would finally break here...
Stainless steel would be much stronger, but certainly at a higher production cost 😐

Thanks for your input, if that's the case probably stainless steel is a better option then, let me talk to the CNC guy and see if they can make it in stainless steel as well

[keith84_hk]

26 minutes ago, keith84_hk said:

Absolutely! Will put you on the list mate 

It's fine with the cost as I am planning to make 10 sets anyway  

Thanks for your input, if that's the case probably stainless steel is a better option then, let me talk to the CNC guy and see if they can make it in stainless steel as well

Confirmed they can CNC in Stainless steel so this will be what we going to use in the production batch

[Metsuki]

Hi there,

Would be glad to be on the list!

And would pay for it!

[Jobster]

Put me on the list too, will at least cover costs.  What a great idea! 

[keith84_hk]

 

On 20/08/2021 at 07:42, Metsuki said:

Hi there,

Would be glad to be on the list!

And would pay for it!

Absolutely, have put you guys on the list.

Again I have no intention to take any money, It's for my own fun and I will make 10 sets to giveaway.

Perhaps the interested parties will have to pay for the postage and that's it 

[Leon]

This is a great idea and saves drilling the actuator arm. Nice one!! Count me in too for my Evora 👍

Edited August 20, 2021 by Leon

[keith84_hk]

I have put your name down on the list 

I will update you guys when the second prototype arrive next week

[Mark.A]

Hi Keith, Looks like you have made a popular part for the EA60 gearbox shifter. Great idea from @TBD and for you to develop it in to a working prototype.

I know it is a work in progress but as @Martrack has pointed out there is a sharp corner where the pin attaches the body this could be a stress point in the design?

Once you have developed the finished part I would also be interested in one.

Will be following this thread with interest.

[keith84_hk]

Hi Mark. Thanks for your input. I think @Martrack was concerning about the material strength which we are now going to make the adaptor from a one piece solid CNC stainless steel.

I understand the new shift point could stress the original arm/lever so if you look at the design, the adaptor was actually covering most part of the arm/lever so the stress could be spread across instead of at one single point.

 

 

 

[Martrack]

49 minutes ago, keith84_hk said:

I think @Martrack was concerning about the material strength which we are now going to make the adaptor from a one piece solid CNC stainless steel.

Exactly, and perfect 👍🙂

[rmaurer]

That's a great idea and is very similar to the short shift modifications performed to Renault Sport Meganes! 
Please can you add me to the list, happy to cover any costs.

[keith84_hk]

@rmaurerExactly, it is not something new and I've seen the similar thing on other cars. Will put you in the list mate.

I think we have 10 people now and I will give you guys update soon.