Originally Posted by SLO_Z28 (Post 376185)

Good call on those springs/spacers. Its what I use. 650 is a little light on the spring though, you might want to step up to at least 750. I wouldn't worry about welding the springs, they're working fine for me.

Originally Posted by Track Junky (Post 376171)

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.

Originally Posted by Track Junky (Post 376195)

Very cool, thanks for the info James!! I figured 650's only because I knocked 200 lbs off the front end. What do you think?

Wonder if any of you or anybody else can answer this question. If you cut a coil off a conventional spring does it raise the spring rate?

I have been told yes from one and no from another.

Originally Posted by Track Junky (Post 376171)

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.

Originally Posted by Sieg (Post 376208)

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.

Originally Posted by Sieg (Post 376208)

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.

Originally Posted by Vince@MSperfab (Post 376230)

sorry got cut off.....custom springs are the best way to go cause they are tailored to your specific vehicle, weight, wheel rate and usage. How are his prices sieg?

thanks for the info,

vince

Originally Posted by Ron in SoCal (Post 376203)

Hey Gae - I was only bustin' yer nuts about the motor leak. You know I've been a fan, and I know what PIA it was when you had to crate the montser back up and ship it out, not to mention the wasted trac day!

And there still more to the journey, right! The brakes that never went on for all the right reasons, the 'other' set of Boze wheels you almost went with, the consideration for a fender stretch (which would of busted the budget). And through all that you, posted vids of passing the field and lowering your track times.

I think you and Vince & Crew have done a great job and given me lots to think about in my build! Props Bro...:cheers:

Originally Posted by Sieg (Post 376208)

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.

Originally Posted by Track Junky (Post 376297)

Thats pretty interesting information. As soon as Vince gets a break we are going to have to discuss shocks. Thanks for the input.