Couple of asphalt question's

[Sammy]

First off I'm completely new to asphalt drag racing a quad, I've always been more of a trail rider. Well recently have gotten interested in turning my trail shee into an 1/8 quad. The setup is listed in my sig. It runs decent for what it is. Now for the questions

 

What size extended swing arm and not run a wheelie bar?

What length struts for the front and rear?

Is strutting the front ok?

What size tire for the front and rear?

[tony cub]

First off I'm completely new to asphalt drag racing a quad, I've always been more of a trail rider. Well recently have gotten interested in turning my trail shee into an 1/8 quad. The setup is listed in my sig. It runs decent for what it is. Now for the questions

 

What size extended swing arm and not run a wheelie bar?

What length struts for the front and rear?

Is strutting the front ok?

What size tire for the front and rear?

 

i think with your mods you'll get away with a +8 swinger.and later on if you get more motor work,you can always add a wheelie bar.

the length of the struts are determined by the hight you want.you should have no less than 2" of space between frame and black top.

yes

scotter tire for front and 18-10-10 on 10X9 rims would be a good start..

[tidos76]

If you are wnting to make it a regular thing, get/make a wheelie bar. i have seen bikes(high power) with +14 flip. with your nod i;d say you would be ok with a +6/+8, but you will still have to slip the clutch some. launching at the track is a whole diff stor than launching on the street in front of your house. Its like racing on fly paper.

 

like tony said you want atleast 2" clearance. I set everything to level. lower it to were the a arms are level then take your measurement. THEN lower the rear till the singer is level and measure. make sure you take the measurements with the tire you are going to be running. and its better to be a lil higher than too low.

 

 

[Sammy]

Yea I was thinking a +8 would do. I've read good things on the American Racer sd23 compound tires, so I'll add those to the list. As far as gearing goes, I'm currently geared 14/44 do you guys think this is to low for the 1/8? I've got to buy a new chain for the swing arm so I figured why not change gearing if I need to.

[trex banshee]

with those mods listed id say a +8 is gonna be long, also for gearing just put a 41 on the rear with the 14 on the front and youll be good to go. the american racer sd23 is a good tire, thats what i want but just cant afford them, get the 20x8x10 sd23. Then you wont have to buy new tires when you get some motor work done and better pipes. It will probably be too much tire at first but just gear accordingly so like i said you wont have to buy new tires later.

 

on height like tidos said set the arms and swinger level to the ground but if not level a little higher is better than lower.

[trex banshee]

actually with your engine and if you buy the 20x8x10 tires id leave that gearing on it. Stock motor is gonna have a little hard time if you gear any higher than that id think.

[Sammy]

Well, are there any disadvantages to having a swing arm that's a little to long?

[tidos76]

it takes more power to turn the tires on a +10 than a +4. its less chain and less distance to move it. I only run a +4 but i have a wheelie bar. you could probably get away with a +4 but you wont be able to straight dump it, you'll hvae to feather it a hair.

[Sammy]

What do you think would be the power difference on my setup with a set of cpi sb oof's vs the ptr mids? I've already got a timing plate and pods on the list of things to buy.