Would a magneto based ignition setup save weight over the battery/dizzy/coil? Would one be suitable for your motor Colin?
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Would a magneto based ignition setup save weight over the battery/dizzy/coil? Would one be suitable for your motor Colin?
it only needs enough power for about 5 mins running then it can be recharged.
Last week's photos, getting ready to go off to the National Championships meeting at Gurston Down;
http://i285.photobucket.com/albums/l...ort/020-18.jpg
http://i285.photobucket.com/albums/l...ort/021-17.jpg
http://i285.photobucket.com/albums/l...ort/022-14.jpg
http://i285.photobucket.com/albums/l...ort/023-11.jpg
http://i285.photobucket.com/albums/l...cort/024-9.jpg
Lack of time prevented any painting of the rear arches, and as you can see there's still some work to do to sort out the finishing off of the rear arches.
I've got some carbon fibre front wings and bumpers coming, so long term the plan is to strip and repaint the whole car (over the Winter).
Thursday night last week was spent fitting some ARP rod bolts, and on the way to Gurston I called in to see BTEC Racing who raised my rev limit to 8,000.
Along with the change to a 4.1 final drive, I was confident that this would allow me to get away with 2 or 3 less gear changes over the course.
Saturday morning practice seemed to bear this out, seeing some new quickest times and higher speed readings, so very happy.
Unfortunately as I approached the finish line in the early afternoon, there was a sudden drop in power..........
I was sure the head gasket had failed. We ran a compression check in the paddock (85, 110, 100, 125psi), so there was a fair bit of variation between cylinders.
We whipped the head off, to find there was no sign of head gasket failure, and nothing obvious amiss with the valves or pistons.
So now it has to be investigated further.
It would appear that the sudden loss of power is something else unconnected with the compression readings.
Very disappointing, as weather conditions on Sunday were perfect, and I know I could have taken a battle to the leading Minis.........those 2 went on to re-set the hill record 4 times yesterday afternoon!
A mate who races in quarter mile said to me anything close to 4.0 fd is about perfect for very fast acceleration and no more then around 100mph top end.
But i don't think i would want that on my xe really...
Colin thats a massive shame to here after getting it going well that something unexplained has gone and stopped you from finding it's potential, i guess these things happen as really your still testing it after getting changes made.
Hope its nothing to drastic though.
Scott
check the piston heights.. you might have bent the rods..
Some other bits I did last week........
Re-sited the race battery and made a quick release bracket for it;
http://i285.photobucket.com/albums/l...ort/003-44.jpg
And fitted an Anderson plug so that I can start the car from a slave battery and save draining the tiny race battery;
http://i285.photobucket.com/albums/l...ort/005-31.jpg
Acquired a carbon fibre bonnet (trial fit in these photos);
http://i285.photobucket.com/albums/l...cort/001-8.jpg
http://i285.photobucket.com/albums/l...ort/002-41.jpg
http://i285.photobucket.com/albums/l...ort/004-37.jpg
The internals of the bonnet will be cut out to leave me with just the carbon outer skin.
lol how much for the bonnet as it is now??
The insides of the bonnet now cut out, and roughly fitted to the car;
http://i285.photobucket.com/albums/l...ort/004-38.jpg
http://i285.photobucket.com/albums/l...cort/001-9.jpg
http://i285.photobucket.com/albums/l...ort/002-42.jpg
The start of the Intercooler Spray System (awaiting delivery of a missing nozzle!);
http://i285.photobucket.com/albums/l...ort/003-45.jpg
http://i285.photobucket.com/albums/l...ort/007-28.jpg
Too late Scott, I've got it on the car as you can see!Quote:
Originally Posted by scott.parker
I'm delighted, it's saved me 1.5kg compared to the fibreglass bonnet.