Hi Steve,
I suggest 4140 or 4340 (EN19, EN24) for the pins and if you use the plastic
bushes make the pin thicker (0.875" to use without the sleeve.) You can also
increase the main shaft diameter to one inch and .875" across the flats.
Make sure all the steps are really well radiused and use marine grease to
stop the corrosion+fatigue killer. If you run the plastic bushes directly on
the pin, the pin must be polished nicely. If you want more security go with
John Logan's outside support which is a good idea. Dan Walters helped with
these design mods above. cheers, derek
Derek White
37/2 Buller's Lane
Colombo 7
Sri Lanka
Tel: 94 1 581175
Cell: 94 777 475955
-----Original Message-----
From: owner-tigers@autox.team.net [mailto:owner-tigers@autox.team.net]On
Behalf Of Steve
Sent: Wednesday, March 12, 2003 8:35 AM
To: tigers@autox.team.net
Subject: Hi All
I broke my fulcrum pin Sunday, I was at a STOA meeting and indoor go cart
racing event, we were leaving and I pulled out of the parking lot, behind
Pat
King and made a left turn and all of sudden my rear end was going around and
hit a concrete middle divider" BOOM" I got out the front left wheel was side
ways a little, no damage to car" thank god"
My question is the fulgrum pin fix, my friend can make it, he wanted to know
the grade of metal for this project.
Steve Coleman
San Jose.CA
---
Incoming mail is certified Virus Free.
Checked by AVG anti-virus system (http://www.grisoft.com).
Version: 6.0.455 / Virus Database: 255 - Release Date: 2/13/03
|