How far off can sprockets be

[insanecreations]

Putting a yz450 in a triz and I've got the sprockets within 1/2 in center to center is that enough cause the chain to jump off? Thank in advance.

[Red Rider]

How far out of alignment they can be, all depends on how far apart the sprockets are from one another. For the least amount of chain derailment issues though, they should be directly in line with one another.

[Jason125m]

I would not run a machine unless they are directly inline.

Aside from the sprocket issue, got any pics of this machine? I'd like to see it.

[insanecreations]

Thanx red rider guess ill jus have notch this frame out a Lil bit so the front of the motor can slide to the left.

[just ben]

1/2" is no good. With as short swingarm an 1/8" might be ok

[insanecreations]

I have one on my phone lemme see if I can upload it

[insanecreations]

173452 says message is to short have to add this lol

[El Camexican]

Is the problem frame clearance or just sprocket alignment? If the issue is just alignment there are inexpensive options to move either sprocket in or out from the centerline of the chassis. As far as allowable offset 1/8” as mentioned is very unlikely to cause a problem. I’ve seen factory alignment out by more than 1/16” on some bikes (my dirt bike for one) and many bike riders have mixed up their rear wheel spacers and unintentionally misaligned their sprockets by 1/8” or more when they put the wheels back on.

The distance between the inside of the plates on your chain is at least 1/16”wider than your sprocket, so if you multiply that by 2 you get 1/8” to use without risking any side wear on the sprockets (imagine the chain is tight to the outside of the counter sprocket and tight to the inside of the rear sprocket, but the chain rollers are still squarely seated on the gears).

Once you go past that to say 3/16” or more you’ll see wear on one side of the counter sprocket and your chain will wear out a lot faster than normal. Considering how well a trike hooks up compared to a bike I’d guess it would wear out very quickly if you are out more than the 3/16".

[insanecreations]

I got it dead in line jus needed someone to tell me to go ahead an do it lol. I also have the front motor mounts nearly finished jus need to drill to more holes and then weld the bottom motor mount tabs on and she is in there.

[Red Rider]

I got it dead in line jus needed someone to tell me to go ahead an do it lol.A lot of the time, that's all a person needs. I learned a long time ago to try and do it right the first time around. It'll save you a lot of headaches later on down the road. Good luck with the rest of the project, and keep the progress pics coming.

[insanecreations]

Does anyone know what the difference in 85 and 86 tripples

[Dirtcrasher]

Those motors are chicken.

I just hand tighten the cam bearing upper caps. I can move the crank etc etc, without it being a huge problem. Then I'll time them and set the valve clearances.

I don't even put the chain on. If you understand why/what and when/where it should happen and how to set the valves your golden.

Once set, only then chain has to be at TDC "COMPRESSION STROKE".

[rg97]

Those motors are chicken.

I just hand tighten the cam bearing upper caps. I can move the crank etc etc, without it being a huge problem. Then I'll time them and set the valve clearances.

I don't even put the chain on. If you understand why/what and when/where it should happen and how to set the valves your golden.

Once set, only then chain has to be at TDC "COMPRESSION STROKE".

Uhh dirt I think this is the wrong thread...

[Dirtcrasher]

Uhh dirt I think this is the wrong thread...

It happens :D

[JasonB]

lmao DC you crack me up


and im interested in seeing this bike finished, i hope your taking lots of pictures along the way!

[Mosh]

Does anyone know what the difference in 85 and 86 tripples

85 tripples hold the 35mm Diameter fork and are raked out in the geometry of the center tube position.

86 Triples hold a 39 mm diameter fork and are raked back..Either set will bolt in any Z frame using the appropriate year forks. However, finding nice 86 Z forks is very hard over the 85 forks in my experience.

If I recall correctly, the difference in rake was 1 degree. Don't quote me on that though.

[insanecreations]

I am but I was puttin a rear end in my jeep yesterday and workin today so I won't be able to start back on the bike until about 7 tonight

[insanecreations]

I have a set of triples jus needed to know what was different so I could find a set of forks

[250rAL]

How do you know when the sprockets are perfectly in alignment? I've seen those alignment tools that clamp on the rear sprocket but they look like they're mostly to help eyeball it and not for taking critical measurements.

[oldskool83]

make the chain inline, you dont want it to jump off, you will get a nice hole somewhere you dont want. if you need to shim the rear sprocket to match shim the motor over to line up 100%

[insanecreations]

Got all the motor mounts done now I am working on exhaust and radiator brackets and looking for a decen set of forks. Also the z's had a foot peg problem correct? What exactly was the problem? Will post some pics tomor.

[El Camexican]

How do you know when the sprockets are perfectly in alignment? I've seen those alignment tools that clamp on the rear sprocket but they look like they're mostly to help eyeball it and not for taking critical measurements.

To do it properly you need to put the frame in a high end jig and measure everything in relation to the centerline of the frame.

Short of that you would have to make sure the rear axle is perfectly square to the frame. On a bike you measure from the center of the rear axle bolt to the center of the swing-arm pivot. On trikes I’ve always just relied on the factory adjusters, but now that I think about it, if they are as far off as some bikes I’ve seen you might want to try and measure from the axle to the swing-arm pivot if you are looking for perfection.

Anyway, once you think you have the rear axle in place you can clamp something straight to the rear sprocket like a piece of cold rolled square bar (just make sure it is straight) that is long enough to reach the front sprocket. As long as you don’t do anything to cause deflection in the bar, or straight edge it should tell you where the front sprocket needs to be. Just remember, in using this method if your rear axle is out of square to the frame by just 1 degree and the distance between your two sprockets is 24” it will appear that you are out of alignment by more than 1/8” so don’t start cutting up your frame until you confirm it is out on a proper jig.

[CRAZY70MAN]

I would think a framing square would work as well??

[insanecreations]

The motor is done I'm jus wondering what is the problem with the tri-z foot peg setup?

[El Camexican]

The motor is done I'm jus wondering what is the problem with the tri-z foot peg setup?

I think Raffa and Mosh are the experts on that. Basicaly the stockers bend at the mounting plates and this can lead to the kicker missing the peg and breaking the case. The sure fire fix is to buy some HD plates from Raffa, weld them on and buy some aftermarket footpegs (look in the 3WW Store).

http://shop.3wheelerworld.com/productdetails.php?productid=94

[insanecreations]

I found the thread thanks I will be cutting them off tonight and making new peg mounts. Also does it look like my header pipe is sticking out to far to you guys? I could be paranoid but it looks to me like its way to far out side the frame.

[insanecreations]

173622 looks lik my letg will burn

[El Camexican]

Yea, the pipe looks pretty far out, but what really caught my eye is how far back it looks like your engine is sitting. Have you got photos of anyone elses build like this to see how they placed the engine?

So as far as the pipe goes maybe once the thing is all mocked up you can cut up the pipe and weld it back together say past the left side of the down tube and back in on the right and tight to the engine. Hard to say what your options are from that one photo, but it does look ready to fry your leg.

[insanecreations]

The engine have to be there to line up with swing arm bolt. But I sat my rad shrouds up and it's not really that far out but time will tell also does anyone have a set of 85 forks?

[insanecreations]

So I need help with the kicker it hits the frame bc the splined shaft is not long enough to stick out past the frame.173660

[Kfx-xc-racer88]

You could cut that section of the frame out and weld in a curved section for clearance.

[insanecreations]

I guess I will have to.... I wish the all mighty derrick Adams would shine some light lol

[insanecreations]

Are there any weak points on the z frame I need to address before finial welding? Also what are some good rads that are short like z rads but thick?