project log

[yoshi]

Actually this is my new single seater with the 929 powerplant. If you think this rail went fast, wait till you see how quick they go with the jig being done. I'm building the rail for the Saudi customer off the new jig. I made the new measurments for the frame and designed the jig as I went along. I figure 1, maybe 2 days to build a frame now. My current single seater took 2 days to build without a fixture. I'm building new jigs for the trailing arms and I have a source for all my tabs which use to take me longer to make than the frame itself. When everythng is up and running, I figure about a 7 to 10 day turn around for customers orders........

[yoshi]

The frame is all tacked together. I will get the tabs made tomorrow and then move on to the suspension jigs. Starting on the 2 seater tomorrow so I might not be updating this for a week or so until the other frame is built.

[Fred.S]

Yoshi,

Some questions:


1) What kind of fixture did you use on your mill to hold your tubing

for notching?


2)where did you buy it from?


3) What type of Endmill did you use?

4)What RPM works Best for this?



5)Did you use Coolant and what type?



Thanks

Fred

[yoshi]

The fixture is a cool little vise I found at the tool store. It has a flat clamp on one side and on the opposite side it has 2 v-sections to clamp onto any size tubing. the vise swivels around in a circle to hit any degree. After you put the tubing in the clamp, you rotate it to the degree you want and as you tighten it it secures both the tube and the degree you want. Very simple. I use a 1.25 inch roughing in mill for my tubing. If you are using a different size tubing, buy the roughing in mill for that tubing. I notch my tubing on the second to slowest speed in the mill. It's not the cleanest cut but it makes the bit last longer. I use a small angle grinder with a 36 grit pad to clean all the edges of the tubing before I weld it up. You also wanna dull the sharp edges back really good so your welding on the beefier part of the tubing. If you need anymore pictures of any of my tools or closer shots let me know and i'll snap them off and upload them........

[yoshi]

Oh yeah, I don't use any coolent, I prefer the dry cut on my notching and on my cold saw. I don't like all the cleanup after I notch something before I can weld it. I know they blades and bits would last longer but they have done good so far. I have built 4 frames with the endmill I bought over a year ago. The cold saw blades are about 100 bucks but they too last a long time....I bought my vise at Re-tool. It was brand new. I'm sure you can find them in other places. The only thing I don't like about it is the v teeth that hold the tubing. There are 2 on one side and 1 on the other. I use a 2 foot long piece of tube as a break bar to snug up the tubing. Luckly the teeth are bolt in, I am building some blocks that bolt into the vise that is drilled out for 1.25 inch tubing. This way it will grasp the tubing all the way around for about 4 or so inches. I can make other blocks that are drilled out for different size tubing that will switch out with the 1.25 inch blocks. I use 1 inch tubing for my braces in my trailing arms, otherwise I wouldn't worry about switching them out.

[Fred.S]

:lol:


Thanks Yoshi,


I understand now,much simpler than I thought

[subawrxsti]

hi i was wondering if you build these your self and sell them or if go tthe plans from some where i really like the look of it and im looking in to building a mini rail andart im trying to get as much info before i atully start

[diirk]

Check Yoshi's website at http://www.sinistersandsports.com

[yoshi]

I build the rails myself, it's my design and I don't sale the plans. Let me know when you start your build, I'll give you alot of basic tips that will save you the troubles I went through. I figured out alot of stuff the hard way, i'll save you alot of time and give you some input to make it handle really good. Ask any questions you want, tools, design, materials, suppliers, anything you need let me know.........Yoshi

[WelderPat]

Some thing i feel is very worth pointing out in Yoshi's pictures.
Look at the bench he is using. Look at the layout tools hanging on the wall.The T square,straight edge. Look at the way the design is drawn out on the bench.That is the right way to do it.
And if anyone is wondering I have layed out,cut, bent,fitted,tacked,and welded pipe for about twenty years.
This is the way it's done!!!!!!!!!!!
You guy's wait here I am going to do a quick search and see if I can find a picture of something I built.