Will carb work tilted a little sideways?

toytime · #1 01-28-2009, 01:56 PM

I'm having so many problems fitting my kit to an electric bike. It just seems that , with the Jackshaft and all, there is no room because the electrics are in the way. The battery box is in the way of the jackshaft but that was expected. The plastic case will hide my hidden gas tank and the batteries will be on a rear rack. My front mount is about two inches from the frame but I can deal with that.
Now I notice that the carb will fit, but only with the air filter removed. The big problem is the cable as it bumps up against the upper crossbar. All I think it would take is to twist the carb a little so that the cable misses the cross bar. In other words, there is only about a half inch of space above the carb. I'm almost tempted to drill a hole through the crossbar and running the cable through it. It is a very strong frame with mega supports in the area (about three inches ahead the seat post).
What to do?

jasonh · #2 01-28-2009, 02:14 PM

I would not drill your frame.

Also, the carb may leak if tilted, and the float may not function properl.y. I would fabricate a new intake manifold to move the carb to the side. If you have access to a welder, I'm sure a 90deg conduit bend would work. Copper pipe/fittings would work too, and you could probably just silver solder them with a torch.

Norman may be able to help you out as well, I think he's made intakes for people before.

toytime · #3 01-28-2009, 03:20 PM

I thought about that too, but it would just be tilted a very small amount but I could see the float giving a false reading.
I guess I'll search out "carb mods" or "intake ".

**Bikeguy Joe** · #4 01-28-2009, 07:23 PM

If it is only tilted a little, it should work, the bike runs when you go around a corner leaning, doesn't it?

The float chamber is a resevior of sorts, so it will just have a little less in it.

**Bikeguy Joe** · #5 01-28-2009, 07:23 PM

Plus, it doesn't cost you anything to try it.

jasonh · #6 01-29-2009, 12:35 PM

You do have a point there Joe

My carb is tilted a little forward just because of how the motor mounts to the bike. The only REAL issue is that it is more prone to leak than if it's level.

MB-Monkey · #7 01-29-2009, 04:26 PM

i have a 90* intake installed on my bike because of a clearance problem with the CNS carb.

A pocket bike guy welded it for me i haven't had any fuel problems. He also uses a 90 for Next bike installs.

Beware of the clutch arm if you make a 90 *intake tho My CNS clears it but my stock does no.
Also my stock carb is twisted slightly because it won't clear the clutch arm.

toytime · #8 01-29-2009, 04:41 PM

I found your thread yesterday MB but man those pics are hard to see. I just went out and bought a dig. camera so I will be posting pics of this build. It's just soooo cold out there in my shed that a couple of hours and my fingers can't touch the metal parts.
I guess if I had to, I could cut a V shape out of the manifold and bend it to postition and get it welded up but I will wait until the install is finished.
Like Joe said, it won't cost anything to try.
Thanks.

**Norman** · #9 01-29-2009, 06:35 PM

hey if your intake manifold is the aluminum type a little filing on the flange should get you the offset clearance you need but if you need more I can make a custom intake out of steel that will work I've been asking $30.00 for them I include gaskets you will then need to buy a couple of socket head cap screws to replace the intake studs with or shorten the intake studs and use the thinnest nut you can find or work them over with a dremel.
Norman

Creative Engineering · #10 01-29-2009, 07:25 PM

toytime,

If I remember correctly you had an altercation with the cops awhile back regarding your engine powered bike? Your bike was confiscated I think?

From this post I assume you are trying to build a sort of hybrid bike? You mentioned "hiding" the fuel tank in the original battery box, and mounting the batteries on a rack in the rear.

I'm assuming that the plan is to use the electric set-up while running the gauntlet past your favorite cop, and then go engine powered once out of his sight?

Before you go to all of this trouble...are you sure it's gonna fly. He may brand you a trouble maker and give you more grief! He may confiscate your new bike or more.

Maybe I read it wrong?

Anyway, Norman has a great idea...alter the angle of the intake at the flange, or better yet have him make you a custom one. Norman does good work.

Another thing you could do; based on the fact that you have 2" between the engine and frame at the front. Move the engine forward, and make a spacer for the rear.

Jim