Quote:
Originally Posted by Track Junky
Ahh you remembered. OK, so let me fill in. There was a total of three Buttonwillow trips last year. The first one was a disaster because the motor leaked oil from just about everywhere. That day at Buttonwillow My fastest time was 2:18 and after two sessions packed it up and left due to oilleaks. Sent motor back, leaks got fixed and then she was good to go. Next trip to Buttonwillow laid down some 2:15's and all was well but car had a push.......Which now leads me to my buddy Vince at Dreamspeedmotors.
After my second stint at Buttonwillow I went to Dreamspeedmotors for some advice and to ask them if they would sponsor me. They agreed to help me out and so they set the car up for my third trip to Buttonwillow. My word to all was that after Dreamspeedmotors was done with tuning the car that I would lay down 2:10 lap times. Dreamspeed readusted front sway bar and raised the front leaf spring perch mount. Sure enough I knocked 5 seconds off my time and ran a couple of low 2:10 lap times at Buttonwillow 13CW config with one 2:10.3 and another 2:10.1. BTW, a big thanks to Vince.......always thinking and always taking care of my needs within a small budget.
Looking forward to next year!!
Love the engine now. So far so good and all you can do is cross your fingers.
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Actually I was talking about the changes made...DSE bar, modified supension mounting points, weight loss and driver changes. but thank you for the props.
We will build it so your kid can hop in and kill a track.
Quote:
Originally Posted by Sieg
You might give Cannon Racecraft a call. They manufacture custom springs for numerous applications.
I don't think the rate changes as it is more wire diameter and other build spec dimensions.
With bikes the critical measurements when determening spring rates are static sag (amount vehicle sags under it's own weight) and ride sag (amount of sag with rider and vehicle) the primary objective is to keep the shock valving in the sweet spot of the stroke over the majority of the course. Off-road bikes they have three stages of compression valving, if the spring allows the shock to ride too low into the mid-stroke the suspension get harsh and corner grip is impacted. I'm not sure how progressive valving is in vehicles though.
I do know that Cannon RC can build springs to your spec and needs.
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The rate will increase and its kinda hard to put your brain around.
If you remove a coil from the total height the spring rate will increase. Its a cumulative effect of ALL the coils together when calculated.
http://www.engineersedge.com/spring_comp_calc_k.htm
good info here.
http://www.corner-carvers.com/forums...il+spring+rate