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by Carrdo
Thu Oct 17, 2019 3:00 pm
Forum: Build Log
Topic: Constructing The Josslin NYC Hudson Lead Truck
Replies: 66
Views: 19684

Re: Constructing The Josslin NYC Hudson Lead Truck

Next was the drilling of the leaf spring end hangers to accept the bottom leaf spring 3/32" dia. locating pins. This is a small but important operation as the pins have to be centred in two directions on the bottom of the leaf spring end hangers. To ensure this was the case, a special drill bushing ...
by Carrdo
Wed Sep 25, 2019 5:55 pm
Forum: Build Log
Topic: Constructing The Josslin NYC Hudson Lead Truck
Replies: 66
Views: 19684

Re: Constructing The Josslin NYC Hudson Lead Truck

The 4 cross drilled leaf spring end hanger pins. The end hanger pins are 3/32" dia. drill rod and are all cross drilled with a #67 drill for the 1/32" dia. cotter pins. It is quite easy to do if you use a made up a drill bushing as seen in the photo. Over the decades I have used hundreds of differen...
by Carrdo
Wed Sep 25, 2019 4:44 pm
Forum: Build Log
Topic: Constructing The Josslin NYC Hudson Lead Truck
Replies: 66
Views: 19684

Re: Constructing The Josslin NYC Hudson Lead Truck

It is a Harig 6 by 18 hand operated surface grinder made in 1981. Came out of a technical high school. They had two of them and an automatic XLO surface grinder which everybody used and was beaten to death. I attended some night classes there so I knew about them. Nobody used the hand operated machi...
by Carrdo
Tue Sep 24, 2019 2:56 pm
Forum: Build Log
Topic: Constructing The Josslin NYC Hudson Lead Truck
Replies: 66
Views: 19684

Re: Constructing The Josslin NYC Hudson Lead Truck

A little further along.
by Carrdo
Tue Sep 24, 2019 10:29 am
Forum: Build Log
Topic: Constructing The Josslin NYC Hudson Lead Truck
Replies: 66
Views: 19684

Re: Constructing The Josslin NYC Hudson Lead Truck

A couple of extra points to note when undertaking the slotting operation. The D-W has a well thought out and simple spindle lock. One needs to have a locked spindle on the mill to prevent any spindle rotation when slotting. Also, the HSS cutting tool has to be kept razor sharp on its cutting edges a...
by Carrdo
Sat Sep 21, 2019 10:32 am
Forum: Build Log
Topic: Constructing The Josslin NYC Hudson Lead Truck
Replies: 66
Views: 19684

Re: Constructing The Josslin NYC Hudson Lead Truck

Completing the internal rectangle slots on the leaf spring centre hangers. I have done this before utilizing the D-W bench mill as a slotting device on very small slots as it has a quick acting lever quill unlike the much heavier Millrite which only has a hand wheel quill on my machine. There are li...
by Carrdo
Thu Sep 19, 2019 6:38 pm
Forum: Build Log
Topic: Constructing The Josslin NYC Hudson Lead Truck
Replies: 66
Views: 19684

Re: Constructing The Josslin NYC Hudson Lead Truck

The leaf spring end hanger slots were then held in the mill's vise by the extra length tabs and finish milled as shown in the first photo. I finish a slot by milling to its full depth first, then moving the end mill side to side to shave down each slot side wall. Measure each side wall thickness as ...
by Carrdo
Thu Sep 19, 2019 6:19 pm
Forum: Build Log
Topic: Constructing The Josslin NYC Hudson Lead Truck
Replies: 66
Views: 19684

Re: Constructing The Josslin NYC Hudson Lead Truck

The machining of the leaf spring centre and end hangers. These are small but important parts which have to be machined correctly. The hanger blanks were left about 1/32" oversize on width and thickness as the rule is do all of the internal machining first as it is much easier to machine things exter...
by Carrdo
Fri Sep 13, 2019 1:31 pm
Forum: Build Log
Topic: Constructing The Josslin NYC Hudson Lead Truck
Replies: 66
Views: 19684

Re: Constructing The Josslin NYC Hudson Lead Truck

The start on the machining of all of the remaining lead truck parts. The cycle seems to repeat itself over and over again. Begin by "rectangularizing" the HR steel blank parts, in this case they are the leaf spring end hangers (4), the leaf spring central hangers (2), the leaf spring hanger pins (4)...
by Carrdo
Thu Sep 05, 2019 8:41 pm
Forum: Build Log
Topic: Constructing The Josslin NYC Hudson Lead Truck
Replies: 66
Views: 19684

Re: Constructing The Josslin NYC Hudson Lead Truck

The nearly finished and the finished bolster plate and how it is attached to the bolster. The truck looks pretty complete now externally but... Still have to make the (modified) drop equalizers, the leaf spring assemblies, hangers and retainers, and if I feel like it, all of the brake parts, the bra...
by Carrdo
Tue Sep 03, 2019 10:22 pm
Forum: Build Log
Topic: Constructing The Josslin NYC Hudson Lead Truck
Replies: 66
Views: 19684

Re: Constructing The Josslin NYC Hudson Lead Truck

It is an all welded steel boiler. I did not make it. It was made to the original Canadian Carl Hoffman boiler design which was all copper but about half or more of all the existing Hoffman Hudson boilers are these steel boilers. It was made by Reg. Miller of St. Thomas, Ontario when he was working f...
by Carrdo
Tue Sep 03, 2019 4:42 pm
Forum: Build Log
Topic: Constructing The Josslin NYC Hudson Lead Truck
Replies: 66
Views: 19684

Re: Constructing The Josslin NYC Hudson Lead Truck

The bolster plate machining. For this operation, I choose a miserable block of flame cut HR steel that had been sitting in the shop since my student days. Torch cutting of the steel alters the machining properties of the steel in the heat affected zone, (not for the better) and leaves rock hard surf...