Tazio Posted August 19, 2021 Share Posted August 19, 2021 I, as the apprentice, with the help of Ian ( Wrightpayne, who is the true Garagiste), have been rebuilding a live axle crossflow that has the 4 speed gearbox, with the heath robinson linkage assembly that links the gearbox gear lever to the remote gear lever. We've only just put the drive train in, and bolted everything together, Currently it's very difficult to select 1st and 3rd, ( the box has been checked out by R&R), so my question is, are there any specific set up, or alignment issues that I need to know concerning the heath robinson linkage assembly, that could be contributing to my selection issues?Alan Link to comment Share on other sites More sharing options...
GaryK Posted August 19, 2021 Share Posted August 19, 2021 Hi AlanNot sure if this is any help but my car originally had a four speed but a previous owner put in a type 9 five speed. I wasn't happy with the linkage (two flat steel bars) and eventually came up with a solution using a 25 x 25 square aluminium bar which I directly connected to the short gearbox lever and then made a new remote level that didn't use the ball joint.Gary Link to comment Share on other sites More sharing options...
Tazio Posted August 19, 2021 Author Share Posted August 19, 2021 Yes, I have the two flat steel bars, and various other bits clamping these onto the actual gear with nuts bolts top hats and bushes...that I cannot find anything about how this should bolted together correctly, shame it never had a properly engineered solution in the first place. Link to comment Share on other sites More sharing options...
GaryK Posted August 20, 2021 Share Posted August 20, 2021 This was the original setup Link to comment Share on other sites More sharing options...
Member Jonathan Kay Posted August 20, 2021 Member Share Posted August 20, 2021 The 1988 Assembly Guide has fitting notes for that and this diagram:If anyone would like a copy please let me know.Jonathan Link to comment Share on other sites More sharing options...
rkeywood Posted August 20, 2021 Share Posted August 20, 2021 Hi Alan,Here's the diagramNot the most elegant bit of engineering but simple and effective. From my experience, when properly fitted, you'd struggle to notice the difference from the selection on the box, after all it's only a parallel connection between the 2 points. Should have 'balls' and rubber turrets on both. If not selecting 1st and 3rd then are the bars the right length and is the gearbox correctly located on it's mount? The caterham bars are longer than those in Gary's pic and radiused on both ends if unmodified. Has the car always has a 4 speed box or has it been modified to have another box at some point in it's life? Have you sorted the reverse stop?RobEdit: post crossed with Jonathan's Link to comment Share on other sites More sharing options...
Tazio Posted August 20, 2021 Author Share Posted August 20, 2021 Thanks gents, and thanks Jonathan, for the heads up where the picture came from, I've downloaded the 1988 Build manual from the FB group, and found the reference re the assembly instructions, basically bolt it up and ensure the legs are parallel, other than that there's nothing to set up. I think I might go and lube my nylon balls.....see if that helps too.Alan. Link to comment Share on other sites More sharing options...
oldboarder Posted August 20, 2021 Share Posted August 20, 2021 you've had the Op then!! Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now