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View Full Version : Since I am getting out of mini quads, some of my tinkerings



BradLoomis
09-12-2008, 02:29 PM
If you have any questions fire away.

Steering stem relocate mount
http://i216.photobucket.com/albums/cc52/X-Stream_Composites/Loomis%20Racing/IMG_1503.jpg
http://i216.photobucket.com/albums/cc52/X-Stream_Composites/Loomis%20Racing/IMG_1490.jpg
http://i216.photobucket.com/albums/cc52/X-Stream_Composites/Loomis%20Racing/IMG_1501.jpg
http://i216.photobucket.com/albums/cc52/X-Stream_Composites/Loomis%20Racing/IMG_1502.jpg

Lower motor mount to stabalize engine, stop twisting and prevent upper frame breakage
http://i216.photobucket.com/albums/cc52/X-Stream_Composites/Loomis%20Racing/IMG_1494.jpg

Rear offset and lower mounts to place the motor centered in the frame and put the sprocket at a better location to prevent swingarc/chain bind.
http://i216.photobucket.com/albums/cc52/X-Stream_Composites/Loomis%20Racing/IMG_1493.jpg
http://i216.photobucket.com/albums/cc52/X-Stream_Composites/Loomis%20Racing/IMG_1492.jpg

Air can that does not change jetting or hamper performance
http://i216.photobucket.com/albums/cc52/X-Stream_Composites/Loomis%20Racing/IMG_1495.jpg
http://i216.photobucket.com/albums/cc52/X-Stream_Composites/Loomis%20Racing/IMG_1496.jpg

There's other photos @
Loomis Racing (http://s216.photobucket.com/albums/cc52/X-Stream_Composites/)

riding4fun
09-12-2008, 03:42 PM
I need 2 of those airboxes.

forgiven
09-12-2008, 03:46 PM
I will take the 3rd and the 4th

born2ride14
09-12-2008, 03:59 PM
ill take one of the air boxes pm me

qcitytile
09-12-2008, 05:03 PM
How much for the stem bracket the filter box and Im curious about the rear motor mounts how exactly does that work. PM me some prices Thanks Joe

Nichols Atvs
09-12-2008, 06:29 PM
What size carbs will the air fillter can fit and are you making them or someone else. How much water does it keep out better than a milk jug. email me hnichols@fairpoint.net. thanks Brad

BradLoomis
09-12-2008, 10:25 PM
Originally posted by Nichols Atvs
What size carbs will the air fillter can fit and are you making them or someone else. How much water does it keep out better than a milk jug. email me hnichols@fairpoint.net. thanks Brad

We have ran the 28-30 mm large throat Koso carbs with UNI's and an outer wear, with no difference whether the can is on or off, so we just leave them on all the time. This design keeps all water and mud from the left front tire out of the air cleaner. If it is a real bad, soupy mud race... I install a sheild on the right hand side of the frame that blocks water from coming across the top of the motor and back into the can.
I custom build these for every quad I've built. The secret is that every quad is different in what size and type of carb, intake, reed spacer, air filter and the small fact that all of my quads have offset motors. You have to make sure that the is atleast 1/2" of space all the way around the filter. And then the shock mount tab is a must to keep it from vibrating itself into pieces.

So the problem with me building these to sell, is that I would need your bike here to build it correctly.

BradLoomis
09-12-2008, 10:51 PM
Originally posted by qcitytile
How much for the stem bracket the filter box and Im curious about the rear motor mounts how exactly does that work. PM me some prices Thanks Joe

The rear motor mounts http://i216.photobucket.com/albums/cc52/X-Stream_Composites/Loomis%20Racing/IMG_0730.jpg
work in conjunction with the lower http://i216.photobucket.com/albums/cc52/X-Stream_Composites/Loomis%20Racing/IMG_0732.jpg
and upper motor mounts http://i216.photobucket.com/albums/cc52/X-Stream_Composites/Loomis%20Racing/IMG_0731.jpg
to relocate the motor 1 1/8" to the right of the quad. The 2 stroke CVT mini quad, no mater what brand, is heavier on the leftside than the right. The problem is, they cosmetically centered the motor using the spark plug as the centering point. The problem is, the left hand side CVT, is the heavier part. By offsetting the motor to the right, it balances out the weight of the quad, makes the spark plug accessable between the steering stem and frame, pulls the carb out of the line of roost alittle more, offsets the swingarmhttp://i216.photobucket.com/albums/cc52/X-Stream_Composites/Loomis%20Racing/IMG_0773.jpg
to the long side of the pivot tube to make bending it ALOT tougher to do and centers up the rear carrier with the frame.http://i216.photobucket.com/albums/cc52/X-Stream_Composites/IMG_0401.jpg
This is important beacause this now widens the rigt side axle 1 1/8" and means you run a 2 1/2" spacer on the right tire to pefectly center the rear tires to the front. I then was able to lower the rear of the motor to put the drive sprocket into a better location that eliminates the standard loose/tight/loose chain slack, into loose to tight.

qcitytile
09-12-2008, 11:22 PM
I see that the left rear mount is lower but the right side looks like its the same only offset towards the right. Did you drill the mounting bracket on the right side. How far did you drop the motor. Does this help with chain slack when compressing the rear shock. We get a lot of slack when my boy lands jumps. Also did you make the swing arm yourself.

BradLoomis
09-12-2008, 11:54 PM
Originally posted by qcitytile
I see that the left rear mount is lower but the right side looks like its the same only offset towards the right. Did you drill the mounting bracket on the right side. How far did you drop the motor. Does this help with chain slack when compressing the rear shock. We get a lot of slack when my boy lands jumps. Also did you make the swing arm yourself.

Yes, I unbolted the lower right hand mount bolt and rotated the bracket up and re- drilled the hole closer to the end. This allows me to have my motor mounts in two different locations wich helps bind the mount locations into a stronger position. It also means that the right side mount, that takes the most abuse, is still in a stock fixed position.

This will help the chain slack in that the chain gets tighter only as you compress the suspension. It gets looser as you extend the suspension. I also mount a roller wheel to the steel plate, to take up chain slack in the relaxed position. There is only 1/4" chain slack difference throughout the total cycling of the suspension.

Yes, I make all of my own stuff. I am working with Dave Carter on some new products that he is going to start selling. I want to focus on what needs to be fixed, more than what everyone else has.

Nichols Atvs
09-13-2008, 01:14 AM
So is the can open in the back buy the the uni filter and just slips over the uni and is keep in place with the 2 mounting locations .how thick is the can metal or was it some thing allready made that shape. or is it carb fiber.

born2ride14
09-13-2008, 07:00 AM
So can you make me a can for a stock drr?

forgiven
09-13-2008, 08:23 AM
I think he was politely saying no, but if you took your quad to his house he would prolly help you out.

When did you want me to stop by Brad? j/k :rolleyes:

WOLFPACK
09-13-2008, 09:40 AM
Thanks for helping everyone out Brad!

I've known Brad for a few years and he's always been willing to help. Brad was the one that found the INA bearing and shared with the rest of us. He also turned us all onto the method of reinforcing the cases.

I wish there were more guys like you Brad!

Shane

#404's Dad
09-13-2008, 11:26 AM
Originally posted by WOLFPACK
Thanks for helping everyone out Brad!

I've known Brad for a few years and he's always been willing to help. Brad was the one that found the INA bearing and shared with the rest of us. He also turned us all onto the method of reinforcing the cases.

I wish there were more guys like you Brad!

Shane

I'd like to hear more on this :)

BradLoomis
09-13-2008, 11:28 AM
Originally posted by forgiven
I think he was politely saying no, but if you took your quad to his house he would prolly help you out.

When did you want me to stop by Brad? j/k :rolleyes:

Anytime you want to swing by, you are always welcome!
I love to build things better... but I am probably just a little to much of a perfectionist, although my wife has another name for it, for my own good.

Nichols Atvs, I will get better pictures and photo the templates I use with scales on them for you.

Shane, thanx for the compliment... but remember, I heard of you long before I ever talked to you. So if I am in that helper boat... then you can have the seat next to me!

My newest project is a CR85 shoehorned into a dual A-arm DRR.

WOLFPACK
09-13-2008, 11:33 AM
Brad,

Just so happens i've been working on my CR90 and 105 motors. Let me know when your ready and i'll take GOOD care of you! We hoping to have out MOD frame ready for this comming season as well.

Thanks for the kind word returned. But in truth, i pale next to you my friend!

Shane

yfz450bb07
09-13-2008, 11:34 AM
The cans work great but its like he said everyone is just a little bit different due to lots of little things like reed spacers, intakes, carbs, etc.... Brad has helped us out a ton with my kids and there quads. He just helped Matt out with some stuff on his cobra that will be a life safer, Justin with his 450, but most of all he is a master at RED LICORICE with my 2 boys!!!!:devil: :devil:

BradLoomis
09-13-2008, 11:40 AM
Originally posted by #8trx450r
I'd like to hear more on this :)

INA Bearing upgrade (http://www.exriders.com/vbb/showthread.php?s=&postid=2812534#post2812534)

Nichols Atvs
09-13-2008, 12:53 PM
Thanks Brad. I have got some ideas in mind may have to talk to you at some point. Drawings and other stuff would be great.
Cant wait to see pics of your latest project. Do it like you did pics of the indy quad.
Thanks

Heath

BradLoomis
09-13-2008, 05:22 PM
Air Can link to pics (http://s216.photobucket.com/albums/cc52/X-Stream_Composites/Air%20Cans/)

CR85 in DRR
http://i216.photobucket.com/albums/cc52/X-Stream_Composites/Loomis%20Racing/IMG_1509.jpg
http://i216.photobucket.com/albums/cc52/X-Stream_Composites/Loomis%20Racing/IMG_1510.jpg
http://i216.photobucket.com/albums/cc52/X-Stream_Composites/Loomis%20Racing/IMG_1511.jpg
http://i216.photobucket.com/albums/cc52/X-Stream_Composites/Loomis%20Racing/IMG_1512.jpg
http://i216.photobucket.com/albums/cc52/X-Stream_Composites/Loomis%20Racing/IMG_1513.jpg
http://i216.photobucket.com/albums/cc52/X-Stream_Composites/Loomis%20Racing/IMG_1514.jpg
http://i216.photobucket.com/albums/cc52/X-Stream_Composites/Loomis%20Racing/IMG_1515.jpg
http://i216.photobucket.com/albums/cc52/X-Stream_Composites/Loomis%20Racing/IMG_1516.jpg
http://i216.photobucket.com/albums/cc52/X-Stream_Composites/Loomis%20Racing/IMG_1517.jpg

#404's Dad
09-13-2008, 07:37 PM
Originally posted by BradLoomis
Air Can link to pics (http://s216.photobucket.com/albums/cc52/X-Stream_Composites/Air%20Cans/)

CR85 in DRR
http://i216.photobucket.com/albums/cc52/X-Stream_Composites/Loomis%20Racing/IMG_1509.jpg
http://i216.photobucket.com/albums/cc52/X-Stream_Composites/Loomis%20Racing/IMG_1510.jpg
http://i216.photobucket.com/albums/cc52/X-Stream_Composites/Loomis%20Racing/IMG_1511.jpg
http://i216.photobucket.com/albums/cc52/X-Stream_Composites/Loomis%20Racing/IMG_1512.jpg
http://i216.photobucket.com/albums/cc52/X-Stream_Composites/Loomis%20Racing/IMG_1513.jpg
http://i216.photobucket.com/albums/cc52/X-Stream_Composites/Loomis%20Racing/IMG_1514.jpg
http://i216.photobucket.com/albums/cc52/X-Stream_Composites/Loomis%20Racing/IMG_1515.jpg
http://i216.photobucket.com/albums/cc52/X-Stream_Composites/Loomis%20Racing/IMG_1516.jpg
http://i216.photobucket.com/albums/cc52/X-Stream_Composites/Loomis%20Racing/IMG_1517.jpg

Thats what I am Talking About Right There !!! AWESOME !!!!!!!

#404's Dad
09-13-2008, 07:43 PM
:-)

riding4fun
09-13-2008, 08:26 PM
Hey Brad,

That number plate is familiar. Is that for Ozzy.

Darrell

BradLoomis
09-13-2008, 10:30 PM
Originally posted by riding4fun
Hey Brad,

That number plate is familiar. Is that for Ozzy.

Darrell
Yes, this is Ozzy's shifter that I built right after I finished fabricating his new race quad that Troy is painting right now. It should end up right around 180 lbs. I can't wait to get it together for Ozzy to ride. It has the newest and best of everything that I know.

riding4fun
09-14-2008, 06:24 AM
Wow,

That thing is gonna fly. It was amazing how many things broke on Ozzys quad in Washington.

born2ride14
09-14-2008, 08:23 AM
Looks like it fits in there nicely!I also notice you have done alot of fab work, looks good. Do you think the frame will hold up?

BradLoomis
09-14-2008, 11:11 AM
Originally posted by riding4fun
Wow,
That thing is gonna fly. It was amazing how many things broke on Ozzys quad in Washington.

Hopefully none of that should happen with his new race bike. I believe his last year bike, was just a stock frame without gussets. I never had a chance to work on that bike.


Originally posted by 300maniac
Looks like it fits in there nicely!I also notice you have done alot of fab work, looks good. Do you think the frame will hold up?

Thanx, it should hold up to most riding. But it is really built for the sand. Troy cut the frame up pretty bad before I got it, so I don't know. Both bottom frame rails had to be cut out and were replaced with sleeved .095 chromemoly. In 3 years, none of my frames have been busted... so we will see. The trick to gusseting is letting the frame twist, so it doesn't build a stress point.

qcitytile
09-14-2008, 11:52 AM
How far did you drop the rear of the motor on the polaris.

BradLoomis
09-14-2008, 12:06 PM
Originally posted by qcitytile
How far did you drop the rear of the motor on the polaris.

About
1" - 1 1/4" down
3/4" back
1 1/8" to the right
front is raised 1/4" - 3/8"

ww228king
09-21-2008, 07:51 PM
looks great!!!

qcitytile
09-21-2008, 09:02 PM
Brad are you interested in making me some of them brackets to lower the rear of the engine and to raise the front. What you did really makes a lot of sense. Would this work with out moving the motor to the right as far as the chain slack issue. Thanks Joe

BradLoomis
09-21-2008, 10:15 PM
Joe,
I have done this to quite a few minis, and unfortunately not one of them can be interchanged. Everything I build is a one off custom piece, because I don't want to have to do it again. I have some basic pieces that I produce a few at a time so that it shortens the time for me to move the motor, and do other things, when I am building a mini.
If you are still willing to be a guinea pig, we might be able to do something. I would be willing to walk you through it to get it right, because I am afraid that anything that I build for you might not fit perfectly.

Thanx for the compliment!

ww228king
10-02-2008, 08:14 PM
can we have an update on the CRX 85 Hybrid? Wanna see more!!!

BradLoomis
10-05-2008, 11:02 AM
I just got the round house carrier from Mr. Carter and just got the swing arm built. I will get it on the ground today and post a few pics. Is there any specific areas you want close ups of or anything detailed out better?

400ex4ever
10-06-2008, 07:18 AM
Hey Brad...

Eric here, Ze'vyers dad. I just got back from a 7 month deployment...Sucked but it just makes home that much better. Do you have any more of those airfilter cans. They guy I sold my predator is having the hardest time getting it to run using teh old trick of milk carton, 2 liter bottle and so on. They have had nothing but problem since I sold it and since I am back I want to help them out to get the kid back on the track where he belongs.

Keep us updated on the DRR. I am going to be selling Ze'vyers JB CR85 frame/subframe if you are interested. If I remember you bought Cody's old one. Just let me know....

Hope to see you at the track again soon...

BradLoomis
10-06-2008, 10:57 AM
Eric,
Good to have you back!!!
I only have one air can left and am needing to send it to North Carolina to a gentleman that bought a quad from me. I do have some of the pieces left over, but would need the quad inorder to fit it correctly.
I just built a frame jig, and am going to start making a couple shifters. I spent about a month getting the geometry right on this one. I have to many spare parts to just let them sit on a shelf.

riding4fun
10-06-2008, 11:06 AM
I'll be in line next year for one of those DRR shifter frames.:D

thedeatons
10-27-2008, 12:14 AM
Hey guys.... Just got back from the sand (again) and my daughter is in tears over the fact that she can't go where she wants to with her DRX2 70. She loves it, and it does everything she has ever asked of it, except climb the big dunes (Sand Mt. Nevada, 600 ft vertical rise).

I am in Boise ID, and am now in need of a shifter upgrade for her. What do I need to do to get in on this?

I know I am not known here, but I do know the Lugan's, and live near them. Great folks who turned me onto this forum.

Thanks!!! James