Well I achieved a bit, trialling in my Austin 7.
Won the trial outright, in a registered, road going car that I drove there and back, against the trials specials with hinge pivoting front springs etc, light bodies and seating further back. Yes!
It is 1 / sometimes 2 wheel drive, but I figure it is nearer the stuff we are into here, rather than going in the off topic weekend achievements!
Pretty damn pleased especially with my suspension mods and carb tuning.
About a year ago I gave the transverse front spring a whole lot more droop capability and made it much softer. It starts off 6" higher, then sits at a similar height to normal but is way more flexible. I measured the articulation the other day and the car now lifts up to 350mm before a 2nd wheel lifts off. That's 0.35 over a 2.235m wheel base, so quite capable... especially with the shocks all slackened off, and even though it has normal 1/4 elliptic rear springs. They are the next mod, well another set actually.
Carb (SU) is on a really long inlet system to make the most of the torque range. Manifold had been condensing on the outside so figured this was happening internally too, as I get different richness between 1/4 and 2/3 cyls. Been missing and farting and the throttle like an on-off switch, since I got it back on the road a year ago. Not a lot of use for trials!
So thanks to a suggestion via a good tuning mate; Garry at P.A.D. Racing, I made a chimney to go around the exhaust headers and up and around the inlet system. Made a bit of a difference, later vastly improved when I added a thermostat out of a modern bike.
Was not sure how this would go as the system is a thermo-syphon one, i.e. no water pump. I drilled a couple of small holes in it so it would always flow something and then put it inside the top hose. Worked a treat!
Had been playing around with reshaping needles but in the end I ran out of time and stayed with the original one that Garry had made 10 years ago using the Dyno, with a previous engine. All I did was drop the needle a bit to lean the whole range. Figured the full revs I was using on this trial (about 6500) were going to be really brief runs (2 mins max with about 30 secs at peak revs) so running lean would not damage anything.
Car went a treat, very controllable throttle when you back off and then put power back down and still heaps of power up high to spin up & clear tyres of mud etc. (my usual style)
Some photos from the 2nd section 'The Gauntlet' which thankfully got canned after the car that ran after me got well airborne too. Thankfully cause I landed on top of 2 markers, throwing my trial away at this stage! Earlier a car had nearly rolled on the 1st part of the section when it backed over a bank after running wide on a corner. I had to stand on the front wheels when the driver and 'bouncer' were getting out to stop it going over backwards!
1st part of section done (where other car went off backwards), u turn and now lining up to cross next bog / creek
I had walked this Section before the start but not immediately before my run. It had changed... Big rut, the dia of a 19" tyre and about 16" deep for the LH front wheel. Lesson learned! Shades of how I used to trial in the UK and Scotland! Get those front wheels up!! Power off to regain steering and turn. LOL!
Landing, and about to throw the whole trial away as I bounced to the right really hard when I went up in the air the first time. You can see the back of two of the numbered markers that I am about to drive over. Wheels outside the markers = the points of the marker before! At 4 out of 20 this would not have been good!
Looking at where I think I am about to be thrown! R Front rising again as rear L tyre goes through the same short rut.
Front back in the air and about to take out marker no. 5
You can see on the number plate the depth of the mud I have just been through.