Boston Mangler
03-18-2006, 07:03 PM
Hey Guys
The rear bumper project has begun and took a weird but possibly good turn. Curious what you all think.
I had 2 custom mounting brackets made out of 3/4" plate (can you say overkill?) and the machinist making them goofed on one of the dimensions (kind of my fault the way i had the dimension diagram drawn). These were fairly expensive to have made, so we wanted to "Make Em Work"
Here is what we did:
The hole for the D-ring mount was drilled to 1 1/2" instead of 1". I know this is no big deal and there is still AMPLE amounts of meat there to support pulling the rig if needed (the plates are 3/4"!!!!). My problem was that the hole was way too big and the D-Ring was bouncing around like mad and making a racket. Looked kind of 1/2 assed too!
Anyway, the machinist and i designed these bushing out of some poly stock he had laying around the shop. At first i thought the idea of pulling such a heavy vehicle in this manner was a little hokey, but he assured me that the poly is plenty strong enough and now i am starting to think this might turn out to be a very good thing for a few reasons!
The bushings were machined for a very snug fit both into the hole of the 3/4" plate and for the pin of the d-ring.
The theory behind this idea (besides trying to make these work) was to eliminate the loud rattling and to protect the powdercoat.
Here is the link to my little writeup:
http://www.yankeetoys.org/mangler/80rearbumper.htm
Here are some pics. Please give me your opinions:
The bushings shown here are just made out of some plain white stock he had laying around and also have a large diameter "shelf" to them. If i decide i want to use this method in the final design, we are going to make a set out of black poly with a much smaller "shelf"
http://www.yankeetoys.org/mangler/IMG_0395.JPG
http://www.yankeetoys.org/mangler/IMG_0400.JPG
http://www.yankeetoys.org/mangler/IMG_0402.JPG
The rear bumper project has begun and took a weird but possibly good turn. Curious what you all think.
I had 2 custom mounting brackets made out of 3/4" plate (can you say overkill?) and the machinist making them goofed on one of the dimensions (kind of my fault the way i had the dimension diagram drawn). These were fairly expensive to have made, so we wanted to "Make Em Work"
Here is what we did:
The hole for the D-ring mount was drilled to 1 1/2" instead of 1". I know this is no big deal and there is still AMPLE amounts of meat there to support pulling the rig if needed (the plates are 3/4"!!!!). My problem was that the hole was way too big and the D-Ring was bouncing around like mad and making a racket. Looked kind of 1/2 assed too!
Anyway, the machinist and i designed these bushing out of some poly stock he had laying around the shop. At first i thought the idea of pulling such a heavy vehicle in this manner was a little hokey, but he assured me that the poly is plenty strong enough and now i am starting to think this might turn out to be a very good thing for a few reasons!
The bushings were machined for a very snug fit both into the hole of the 3/4" plate and for the pin of the d-ring.
The theory behind this idea (besides trying to make these work) was to eliminate the loud rattling and to protect the powdercoat.
Here is the link to my little writeup:
http://www.yankeetoys.org/mangler/80rearbumper.htm
Here are some pics. Please give me your opinions:
The bushings shown here are just made out of some plain white stock he had laying around and also have a large diameter "shelf" to them. If i decide i want to use this method in the final design, we are going to make a set out of black poly with a much smaller "shelf"
http://www.yankeetoys.org/mangler/IMG_0395.JPG
http://www.yankeetoys.org/mangler/IMG_0400.JPG
http://www.yankeetoys.org/mangler/IMG_0402.JPG