Ok well I have been getting a lot of emails about my builds on these newbright sleds.
So I am in the middle of a new build I am going for 50mph or better with this one.
I have been trying to make it so anyone with a drill and hacksaw can make all the parts (well not the wheels)
you can use the ones that come on the newbright sleds, if you look at my other posts you will see I used them.
Well lets get to it shall we.
all the aluminum I am using is 3/8 square bar / 3/16 x 0.049 tube / 3/8 round bar
all the bolts are 4/40 allen head bolts and they range in length.
Ok now the first thing is strip everything out.
next thing is you need to mark out 4 holes that you need to drill in the tunnel for adding the suspension
Now if you follow this the track will be nice and tight and won't slip, I have done many tests to make sure this works well I can do wheelies and have had no problems.
Almost forgot you will not be able to drill the holes in the tunnel straight from the inside so
what I do is heat up a large pin holding it with needle nose pliers then when its hot push it through from the inside this way you will have a small hole that you can use
as a guide to drill from the out side of the tunnel.
here is the link for the pics first
Ok now from the center of the main driveshaft your first hole in the tunnel will be (3" 7/8) then the next one will be (7" 3/4) now this one is 1/2 inch from the bottom of the tunnel, you can see this in the picture.
I draw a line to make sure the holes are in the right place's, now do this for both sides.
Now for the suspension parts
I did have 4 wheels in there but I wanted it to go lower for speed and the shock was hitting it when it gets to low.
Now the wheels on the wood are the ones that go in the tunnel this pic is just to show you how it all looks when set-up in the sled
start with 2 pieces of 3/8 square bar they will be (8" 1/4 long) now the first hole is (1/4 inch) from the end, next now this is for the shock (1 inch) from the first hole
now the next one is right in the center at (3 7/8) next one start from the other end of the bar the first one is (1/4 inch) from the end then the last hole you have to drill is (2" 5/8) from the center of the last hole.
Now the spacing it will depend on what you use for the wheels.
All you have to do is make sure they sit close and keep the track in line, like the stock ones do, you can always use the stock one I use the (3/16 x 0.049 tube and put the wheels on it.
Now the reason I like using this tubeing is cause you don't have to drill it out just run a 4/40 tap through it thats it.
pictures always help so have a look
The tunnel spacing is (4 1/8) across
Now for the arm's that hold the suspension in place
Start with 2 pieces of 3/8 square bar they will be (6" 1/8 long)
First hole is (1/4 inch) from the end next one is (2" inch) from the first one this one is used for a cross brace.
Now the last hole will be (5" 9/16) from the first hole you drilled.
again the cross brace length will depend on what you use for the wheels always leave enough room so everything move freely.
Now for a few more pics to show it all together, an you can see that now matter where I put it the track will always stay at the same tension.
One final note MAKE SURE ALL WHEELS USED ARE (1 1/2 INCH) they all need to be the same size for this to work.
The main drive wheels are and the other wheels in the stock sled are (1 1/2 inch) but the back one is not so don't use it with this set up.
If there is anything else you would like to know please ask.
Now keep watching for the next posts to come.