No, I haven't fixed my engine and I'm still feeling crappy that the engine has blown up
but I sat and rebuilt my 705 last night and took it to the track today. Now I've only got a standard SX12-RE, so the power was noticably down on the SS 3 Port, but it wasn't so bad when I got it tuned in.
This is the first time I've driven the 705 properly this year - last time out, I had problems with a pulley grub screw not being tightened up which lead to me only having rear-wheel drive
so it was very bad
This time out I could really drive the 705. First impressions where that the 705 is twichier than the 710. I can take the 710 out-of-the-box and hit the circuit at full speed - no need to change the setup from standard to go quick.
With the 705, the back end wouldn't stick very well, which lead to some hairy moments through the fast left-right flick
At first, though I simply wanted to setup the engine - which didn't take long......my tuning skills are coming on well now!
As well as the loose rear end, the front was over responsive to steering input - first of all I turned down my Tx unit's ATV from 90% to 70% which helped the steering not to be so twichy, then I altered to front track to 200mm and put the anti-roll bar to the hard setting. That had the front end settled down, but the back end was still really loose. Next I changed back from the red spring to the yellows, but still the rear was loose
So next I took out the 7mm spacer on the rear upper arm and replaced it with a 4mm bearing and 1mm spacer
(it's all I had!
) now the rear end stuck to the road
and I could really start to drive the 705
Using a smaller spacer on the rear upper arm affected the coning of the tyres - I had -3.5 and -3 degrees (right and left) and the tyres wore flat!!!
I'll have to make an even more severe setting tomorrow.
Overall impression was that the 705 isn't as setup friendly as the 710; it wears the tyres more in the rear; under breaking it is more difficult to control and the grip levels aren't so high for the same shore tyre.
But I was very pleased with the turn in of the 705 - here it was a little better than my standard 710 setup
That was a 6 hour session at the track today (crash free, too!
), so I'll have to do a bit of cleaning and setup work tonight in order to get it ready for another session tomorrow.
The 705 is still a nice car to drive!