Originally Posted by
flatspunout
New to 1/12th, previous rubber tire TC experience and 1/10th oval (pavement converted buggy and pancar) in the late 80's/early 90's... thought I was getting into a "driver's class" but after reading pages upon pages of posts in this thread it seems more like I have stumbled into a "mathematician's class"
I do have an actual question but first I think I would like to hear someone say that it is ok to run pretrued tires without knowing my rollout, run the stock diff and shock, and just learn to drive the car without worrying myself to death over a .5 mm ride height adjustment!
And the actual question is: Are the "Gurney flaps" on my Protoform Speed
12b worth mounting? Will they have a noticeable effect and will they become track debris the first time I get upside down? I don't think I have ever seen them in a picture and the PF website stock photo doesn't show them either...I'm not positive I would have them mounted correctly even if I did decide to use them. Thanks for any input!
-rocky b
Hey Rocky, dont get caught up in the technical stuff right off. Allmost every 1/12 car has componets that are more than capable of doing the job, worry about upgrades and nit-picking stuff once you've got the basic driving down. The only things to worry about is ride height(as the inspector said that is imporant) and keeping the tires even(rotated and trued) before each run. Now as to your ? on carpet I have'nt really needed the gurney flap but it is very helpfull on asphalt for anything faster than a 17.5.
Originally Posted by
wingman2
Hi Tyler, new car looks sweet! It actually looks similar to a car that I have been working on myself over the last couple of months. I noticed that the chassis, between the 2 t-bar holes, has had holes countersunk into it. I'm assuming that is to clear the screw heads on the t-bar pivots. On my car, I had the material underneath the the t-bar removed so the hole assembly sits lower into the chassis (reducing the roll centre I think!). To get the stiffness back, the cross brace extends forwards from the rear pivot to the front pivot and then onto a alu' mounting block for the shock and roll over mast. The cross brace is bolted in place in 5 positions so hopefully retains the overall stiffness even though a fair amount of material is missing from the centre of the chassis! I also had to place spacers between the pivots and the crossbrace so that the top part of the pivots clear the brace. After all that, I then machined some standoffs to the correct height and bolted them onto the chassis. The whole back end now sits really low. I also have a new top plate and crossbrace being made at the moment (fwww.fibrelyte.co.uk) which also uses a single damper tube or associated shock. There is also a new crossbrace that goes with the new top plate. Let us know how your new cars goes mate and I'll do the same! Cheers, Chris.
Sounds cool post some pics and track results when you can, I love to see the level of interest and inovation in 1/12 right now
Your DB12R is looking cool fav0re, that color looks like peach on my monitor what color is it?