Broke chain, what now?

[ryanschoebel]

While reading, I see that it says that changing gearing can effect the speedo. That doesn't seem the case here, considering it reads at the front wheel? Also, I haven't decided yet, and will see what I have on rear sprocket right now, but I think I want to gear it down. I'm not sure what I want yet, will keep updated.

[Pat Conlon]

The '84/85 came stock with 17/42 sprockets. IMO fine around town, but a bit buzzy on long trips.
If you wanted a bit more pep, you could go 17/44 but I would not want to ride long distances with that combo.

As Noel said, the larger the front sprocket the less stress on the chain (wider distribution of load) so a 17 is the smallest I would run on the front.
I would not recommend a 16 tooth (or smaller) front sprocket on a FJ used as a street bike.

Get 2 back sprockets, a 44 tooth for around town fun and a 38 tooth for touring.

Don't you love how I spend your money?

[ryanschoebel]

The '84/85 came stock with 17/42 sprockets. IMO fine around town, but a bit buzzy on long trips.
If you wanted a bit more pep, you could go 17/44 but I would not want to ride long distances with that combo.

As Noel said, the larger the front sprocket the less stress on the chain (wider distribution of load) so a 17 is the smallest I would run on the front.
I would not recommend a 16 tooth (or smaller) front sprocket on a FJ used as a street bike.

Get 2 back sprockets, a 44 tooth for around town fun and a 38 tooth for touring.

Don't you love how I spend your money?

But accounting for what you said earlier, wouldn't i need a different size chain to run a 44 rear? I do currently have a 17/42, and would like to go 44, just to try it, but i also already ordered the 110 link chain...

[Pat Conlon]

I seem to recall a couple of folks ran the 17/44 combo on their 110 link chains...

Why not post the question over in the modifications section?

I *think* you'll be ok, but I never tried the 17/44 combo so I'll defer to those who have.

[ryanschoebel]

UPDATE: so I'm leaving the gearing for now. My new sprocket cover also came in today. It is slightly different from what i have, but will still fit just fine i think. I also had someone come out and take a look at my welding that i need done today, and he thinks its doable, for under or around $200. Im just going to rent a trailer and take it out to his house this weekend, and he thinks we can do it in under a day. I just have to remove the alternator, carbs, side panel (if possible, and completely drain the oil. I also have to sign something that says i wont hold him liable if my engine catches fire or explodes. Bar that, we will see how it goes. PROGESS!1

[Pat Conlon]

Well allrighty....PM me your address and I'll get my DID chain tool off to you.

Sounds like you can get this squared away in time for you to join me for the ride up to Pet-the-Tuna.

[ryanschoebel]

Sounds like you can get this squared away in time for you to join me for the ride up to Pet-the-Tuna.

Here's hoping!

[fj1289]

UPDATE: so I'm leaving the gearing for now. My new sprocket cover also came in today. It is slightly different from what i have, but will still fit just fine i think. I also had someone come out and take a look at my welding that i need done today, and he thinks its doable, for under or around $200. Im just going to rent a trailer and take it out to his house this weekend, and he thinks we can do it in under a day. I just have to remove the alternator, carbs, side panel (if possible, and completely drain the oil. I also have to sign something that says i wont hold him liable if my engine catches fire or explodes. Bar that, we will see how it goes. PROGESS!1

Unplug your ignition module from the harness and disconnect your battery.  Don't want any high-voltage elections jumping around the ground circuits and causing trouble. 

[ryanschoebel]

I disconnected the battery when I removedthe starter. Should I still disconnect the ignition module?

[Pat Conlon]

Unplug your ignition module from the harness and disconnect your battery.  Don't want any high-voltage elections jumping around the ground circuits and causing trouble. 

Excellent advice from an expert Good catch Chris!

Yes, unplug your ignition box (both plugs) be extra careful with the side lock tabs on those plugs, be gentle, that plastic is over 30 years old and quite brittle. Easy does it.

[ribbert]

Unplug your ignition module from the harness and disconnect your battery.  Don't want any high-voltage elections jumping around the ground circuits and causing trouble. 

Excellent advice from an expert Good catch Chris!

Yes, unplug your ignition box (both plugs) be extra careful with the side lock tabs on those plugs, be gentle, that plastic is over 30 years old and quite brittle. Easy does it.

Given the reaction my dissenting views get here I suggest you google it, you will get your answer.

Me, I do two things for mig, place the earth clamp near the job and make sure I have a good earth. If I remember, I disconnect the battery. (Disconnecting the dozens of ecu's on more modern vehicles is not even an option)










Noel

[X-Ray]

Hey Ryan, you are in good hands here advise wise, you can't go wrong.

If you are new to replacing/riveting chains etc, have a look here https://www.youtube.com/watch?v=6Yj4sKsguvU      Delboy has a fantastic channel on bike maintenence, and this video covers chain/sprocket replacement, but more importantly exactly how the riveting tool should be used, ( it really is quite easy).  I even watched for when I riveted my new chain recently just to make sure....... ( that I was doing it right).  Anyway good luck 

[Pat Conlon]

We also have the instructions for the DID chain tool saved in the Misc. Files section: http://www.fjowners.com/index.php?topic=16659.0

[fj1289]

Unplug your ignition module from the harness and disconnect your battery.  Don't want any high-voltage elections jumping around the ground circuits and causing trouble. 

Excellent advice from an expert Good catch Chris!

Yes, unplug your ignition box (both plugs) be extra careful with the side lock tabs on those plugs, be gentle, that plastic is over 30 years old and quite brittle. Easy does it.

Given the reaction my dissenting views get here I suggest you google it, you will get your answer.

Me, I do two things for mig, place the earth clamp near the job and make sure I have a good earth. If I remember, I disconnect the battery. (Disconnecting the dozens of ecu's on more modern vehicles is not even an option)










Noel

Noel - I agree it is probably overkill, but we also have no idea who is doing the welding, what equipment they are using, how much prep work they are doing. 

On another forum I'm on they had a guy recently fry his stand alone ECU when they did some welding on the car.  A better grounding scheme may have helped in that case. 

[ryanschoebel]

Well, i dont know much about welding, but this guy seems to know. He is using TIG though, not MIG. I drained the oil today, pulled my carbs, and tried to pull the side cover, but didnt have the tolls to do it. Ill see if he does, the day of.