Raising the seat and moving it forward

[Cranky]

I'm in the unusual position of being too small for my Caterham. I bought a 2015 S3 with a lowered floor. It has the cushy leather seats. How can I raise them and move them forward (preferably making them adjustable). I believe that they are currently bolted in position.

[CBuff]

Double check with caterham to make sure they are correct for s3 leather seats.  I have an sv and have to pull my seats all the way forward to reach pedals. (No lowered floors).  
 

https://caterhamparts.co.uk/seats/6619-seat-runners-620.html

they have them included with the seat purchase so I’m sure you can source just the rails. 
 

https://caterhamparts.co.uk/seats/2599-leather-seat-s3-complete-with-runners.html

One of the importers in the us might have them in stock. Josh (rocky mountain). Or Greg time machines. 
 

https://rockymountaincaterham.com

 

https://timemachinesmotorsports.com
 

[MV8]

Besides offsetting on the rails, you can shim the bottom of the front of the tracks so the seat rises as it moves forward like most oem seats, then shim the back of the seat above the tracks to bring the seat installed angle back to where it would be normally. Swivel cup washers or tappered can be used for the bolt seats if needed.

[IamScotticus]

@Cranky how is your current wheel, shifter reach and instrument view?

If the pedals could be moved back as far as you need, could you drive from the current position?

Edited May 7 by IamScotticus

[theDreamer]

So did you buy RickRa’s 280? It should have adjustable seats. They may just be stuck.

Also, for now you can use a pillow to sit on. My wife made this one for me and it just does the trick perfectly.

[Cranky]

On 5/7/2025 at 8:37 AM, IamScotticus said:

@Cranky how is your current wheel, shifter reach and instrument view?

If the pedals could be moved back as far as you need, could you drive from the current position?

I don't know. The car is in transit. I'll check it more carefully once it arrives.

[Cranky]

21 hours ago, theDreamer said:

So did you buy RickRa’s 280? It should have adjustable seats. They may just be stuck.

 

Also, for now you can use a pillow to sit on. My wife made this one for me and it just does the trick perfectly.

 

 

I did buy his. It's in transit right now. Should arrive tomorrow. I'll take a closer look when it does.

[Cranky]

On 5/7/2025 at 3:34 AM, MV8 said:

Besides offsetting on the rails, you can shim the bottom of the front of the tracks so the seat rises as it moves forward like most oem seats, then shim the back of the seat above the tracks to bring the seat installed angle back to where it would be normally. Swivel cup washers or tappered can be used for the bolt seats if needed.

Thanks. I'll look into that if we add rails or maybe even shim the existing ones if it has them.

[Cranky]

On 5/8/2025 at 10:40 AM, Cranky said:

I did buy his. It's in transit right now. Should arrive tomorrow. I'll take a closer look when it does.

 

On 5/7/2025 at 1:12 PM, theDreamer said:

So did you buy RickRa’s 280? It should have adjustable seats. They may just be stuck.

 

Also, for now you can use a pillow to sit on. My wife made this one for me and it just does the trick perfectly.

 

 

 

It does have adjustable seats that were stubbornly resisting being adjusted. It is now drivable when sitting on a cushion.

 

I'm going to take it to my mechanic and have them do a thorough maintenance cycle. I'll have them move the pedals a little forward and shim the seat a little higher.

[IamScotticus]

You should have two pedal axis positions, an inch apart.  may require shortening the clutch and brake cylinder push rods

https://www.pegasusautoracing.com/productselection.asp?Product=3554