DuttonOwners

Dutton Kit Cars and their owners

For those days when your parts just can't arrive quick enough, for sunny days when the transit just isn't 'fun'...

Project X...

Coming soon to a shed near me.

1997 DOHC, weber TC, MT75 box and Sierra fixed 3.72 diff in a Phaeton 3/4 hybrid.

I did some playing on gear calc and the theoretical stats look like this.

Gear   Mph per 1000 RPM  Mph @4000 RPM Mph @6000 RPM
1 4.91 20 29
2 9.17 37 55
3 14.24 57 85
4 19.08 76 114
5 23.27 93 (buttock clench) 140 (new pants)

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Comment by Adrian Southgate on November 12, 2017 at 20:32

Well that didn't pan out quite the way I wanted.

'Bit' made and fitted, everything nipped up and third - fourth is perfect... sadly all the other gears are out of range.

The pivot point for the stick is too high so as you try to move it sideways in neutral the mechanism binds on itself. I have started on the mk2 but may need another M12 tube nut as the first one is welded into the bracket and it's going to be awkward to remove and re-use it. I may be able to rotate the bracket through 180 degrees and reweld the mounting points though, that will get the existing M12 tube nut to about 30-40 degrees from horizontal and allow the pivot point to be moved down and back, more in line with the centre of rotation. I have already made a new 'link bit' which is totally different, but it needs to be ground to shape. The new link bit is a different diameter of tube which may need a cap welding on and a rubber sleeve between it and the selector knob to help stop vibration. 

I can't work out how the spyder engineering one works now, thought I had it sussed but it didn't work.

Spyder shift 01

I Don't see how that assembly can rotate the selector as the pivot point is out of line.

Comment by Adrian Southgate on November 12, 2017 at 10:38

The 'workshop' is primarily for doing those little fiddly jobs that we currently undertake in the street outside, bulbs, wipers, batteries etc, awful jobs to do when it's raining. Having the space to work on a toy is just a bonus. I spend most of my time processing stock anyway so it's not like i'm front of house unless someone is on a day off. Once that stock has been processed, moved or moved on i'll have a bit of time.

Comment by Daryl Heasman on November 12, 2017 at 10:26

Bad move Ade ,take your eye off the ball and things go wrong , work and play don't mix

Comment by Adrian Southgate on November 12, 2017 at 10:18

Things will accelerate shortly as the car will be the first occupant of our new 'workshop' in the basement of the shop. Means I can spend time during the day working on the car rather than moving old brake pads from one place to another :( Speaking of which, if anyone out there runs a late 80's or 90's car then let me know. I will be 'job lot' selling some old redundant stock for which I will get peanuts per item. If a few find their way to good homes during the process that i'll be happy with a deal + cost of postage. I may be able to upload a list at some point in the near future to make life easier. I'm off to the unit to make that last fiddly bit in a while, quite excited to see if my theories work in practice.

Comment by James Doulton on November 11, 2017 at 22:42

Getting there, Ade.

Comment by Big Vern on November 9, 2017 at 19:56

MX5 doesn't have a gearbox mount as the gearbox connects directly to the PPF. I have seen many fabricated brackets that mount to the bottom of the box and match up to the Ford gearbox mount - it goes where the small stiffener bracket connects between the box and the PPF I have some pictures on my computor at work I'll did them out tomoz

Comment by Steve Kerswell on November 9, 2017 at 12:58

Thanks Dave, I'll hold off throwing a tantrum then :-)

Comment by Dave Price on November 9, 2017 at 12:39

Steve, your comment is very timely.  I have a day off tomorrow so in tend to try and finish off the gearbox mount tomorrow.  Will post a photo.

Comment by Steve Kerswell on November 9, 2017 at 12:23

in the MX5 kit forum they use an engine mount from the MX5 under the box and use rubber doughnuts on the engine. Those MK's etc. seem to have higher bonnets then the Phaeton type car, so they sit up a bit higher.

Comment by Steve Kerswell on November 9, 2017 at 12:19

No Ade, not to worry, I'll take a hike to the bearing shop, they do industrial mounts for fans etc. I wonder how Dave Price managed with his RX box?

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