chain, jckshaft and frame questions

[guardrail2000]

Hi everyone

Building my first cart and never realized it was going to get so complicated.....lol I know my questions might get a laugh out of you experienced builders.

First how do you correctly cut bulk chain ?

2nd. I ordered a jack shaft kit and cant understand how the bearings are suppose to be held in place as they only have a stop on one side.

Lastly, years ago I used to weld frames for dragsters. A friend looked at my frame and said it was to weak. It had a bit of sag to it as he stood on it. He's 200 lbs. When we built drag frames they had to have a slight movement to the frameas not to break the moly at the welds. Am I incorrect in my thinking.

Thanks

 

[Bluethunder3320]

well i can answer #1. you need a chain tool, get one at a bicycle shop or find one online.

 

[Bluethunder3320]

found a good one:
http://www.rei.com/product/544208?p...-FB85-DE11-B7F3-0019B9C043EB&mr:referralID=NA

 

[Doc Sprocket]

Yes you can use a chain breaker, the low-buck solution is a hammer and punch to drive out the rivets. Often, grinding the rivets head down speeds things along. Make the new chain connection with either a master link or an offset link, whichever is appropriate to your length.

Regarding the bearings, I'd have to see them. Someone else here may know exactly what you're referring to.

If you have built dragster frames, I'm going to assume you know what you're doing. Use your judgement. Making a dead stiff ladder frame would probably be overkill in the materials department. I'm sure a little flex would be fine, depending on your application.

 

[Blazkowiez]

I grind basically any chain I can get near the grinder... it causes no damage to the chain and is the quickest tool in the shop to do the job.

On a typical jack-shaft you have things on each side of the shaft, nuts, locking collars, sprockets, etc. This will hold the bearings in place as you have little side pressure.

On the dragsters is the molybdenum an additive to the steel you were welding?

 

[guardrail2000]

moly what ?

sorry it took so long to get back. Thanks for the replys. Never heard of that additive or any additive a welder could add to a weld. Chromemoly is tuff enough on its own and has the spring necessary to minimise weld strain and yet maintain structure integerity.

 

[ramairgtz]

The bearing for the jack shaft have a lip on one side that's why you only need 1 collar to hold them in place

 

[r97]

i can take some pics on how to setup a jack shaft kit if you want, i may not be able to upload until tomorrow.

 

[metalthrashinman]

I grind basically any chain I can get near the grinder... it causes no damage to the chain and is the quickest tool in the shop to do the job.

Mark it, grind it, and punch it out. I use a slightly opened vise to rest the chain on in the perfect positon to push out the pin once the grinding is completed. Blaz nailed it again.

 

[Bluethunder3320]

just remember dont hit the pin out all the way..... it takes FOREVER to put back in, and sometimes you will just screw it up and you will need to replace 2 more links (because every other link is the same)