Search found 4680 matches

by Prof
Sun May 24, 2020 10:18 pm
Forum: The Chopper Shed
Topic: building a frame for a Twin Cam A...
Replies: 17
Views: 4792

Re: building a frame for a Twin Cam A...

Doing the final post on electrics box right now... Now for the sides. I will suggest that Garry have these chromed. So extra care is needed to keep them with out ripples that would show up once they are shiny. Once again the two sides are made from 2mm sheet steel. Here cut to basic size and rolled ...
by Prof
Fri May 22, 2020 10:44 pm
Forum: The Chopper Shed
Topic: building a frame for a Twin Cam A...
Replies: 17
Views: 4792

Re: building a frame for a Twin Cam A...

Left side of battery box needs a floor. It will be supported by a welded in back. Swing arm is raised to its highest position so we can be sure the belt will clear. Always allow for the fact that the belt or chain describes a slight arc when it is under power. Here the back has been bent out of some...
by Prof
Wed May 20, 2020 9:40 pm
Forum: The Chopper Shed
Topic: building a frame for a Twin Cam A...
Replies: 17
Views: 4792

Re: building a frame for a Twin Cam A...

Mounting electrics... With Garry 's approval I am building a traditional chopper style electrics box to house the battery and electrical components. Mounting the battery is a bit of a challenge due to its bulk. Unlike Harley, I will have the two terminals to the out side. Battery will also mount on...
by Prof
Tue May 12, 2020 10:06 am
Forum: Your Chopper Pics
Topic: Long term Triumph Chopper project
Replies: 89
Views: 14729

Re: Long term Triumph Chopper project

Yes. That means that in SA you could get away with about 2.5" which is not very safe on a Motorcycle unless its a drag bike and doesn't go around corners!
by Prof
Mon May 11, 2020 9:47 pm
Forum: The Chopper Shed
Topic: building a frame for a Twin Cam A...
Replies: 17
Views: 4792

Re: building a frame for a Twin Cam A...

Just setting up the next post...

Nup. didn't happen. Still putting photos in folders! Tomorrow night I hope.
by Prof
Mon May 11, 2020 1:26 pm
Forum: Your Chopper Pics
Topic: Long term Triumph Chopper project
Replies: 89
Views: 14729

Re: Long term Triumph Chopper project

I believe the ADR on motorcycle height has changed. In SA, now, if bottom of bike clears with both tyres flat it is legal. Might pay to check.
by Prof
Sun May 10, 2020 10:27 pm
Forum: The Chopper Shed
Topic: building a frame for a Twin Cam A...
Replies: 17
Views: 4792

Re: building a frame for a Twin Cam A...

A gusset behind the steering head and a structural member under the seat left to do. I asked the engineer if he wanted me to run a tube from the bottom of the steering head back to the middle of the backbone or if he would accept a pair of triangular gussets. He was happy with the latter. the gusset...
by Prof
Sat May 09, 2020 6:37 pm
Forum: Your Chopper Pics
Topic: Long term Triumph Chopper project
Replies: 89
Views: 14729

Re: Long term Triumph Chopper project

Bit longer than the standard Triumph. How much did you add into the rear end and what is the ground clearance?
by Prof
Sat May 02, 2020 11:14 pm
Forum: The Chopper Shed
Topic: building a frame for a Twin Cam A...
Replies: 17
Views: 4792

Re: building a frame for a Twin Cam A...

On two wheels at last... Ready to be separated from it umbilical cord and enter into its new world. A set of handle bars will be needed to manouver the chopper around the workshop. Front end is a 2" over Meatballs springer (from Bendigo, Vic) so we first need to knock up a set of risers. Handlebars...
by Prof
Sat May 02, 2020 10:05 pm
Forum: The Chopper Shed
Topic: building a frame for a Twin Cam A...
Replies: 17
Views: 4792

Re: building a frame for a Twin Cam A...

Engine mounts... Front engine mount is next. Remembering this is a rubber mounted motor, this front mount needs to be substantial. A measure up of the stock mount provides a guide for this one... as usual, we will go a bit stronger. I have to make a new frame mount on the jig as the existing one ge...
by Prof
Sat May 02, 2020 6:27 pm
Forum: The Chopper Shed
Topic: building a frame for a Twin Cam A...
Replies: 17
Views: 4792

Re: building a frame for a Twin Cam A...

Shocker mounts... To set up rear end, one shocker is dismantled and compressed. Wheel is blocked up to previously measured amount of travel. This is calculated most accurately by comparing the length of a fully extended shocker against a fully compressed one. It can be done by measuring an extended...
by Prof
Thu Apr 30, 2020 11:23 pm
Forum: The Chopper Shed
Topic: building a frame for a Twin Cam A...
Replies: 17
Views: 4792

Re: building a frame for a Twin Cam A...

Boxing in the Steering Head... The steering head and about 12 inches along the backbone are both high stress areas and need to be treated accordingly. Our backbone is more than substantial but will have a tube connecting it to the down tube gusset or a pair of small gussets to the steering head jus...
by Prof
Wed Apr 29, 2020 10:54 pm
Forum: The Chopper Shed
Topic: building a frame for a Twin Cam A...
Replies: 17
Views: 4792

Re: building a frame for a Twin Cam A...

I cheated and had left overs for tea tonight, so I could have some time to get up some more pics of Garry 's machine. We are a long way past this post, but I will continue to take it step by step in the hope that it will help some chopper jocks do a good job of their own choppers. My posts are desig...
by Prof
Wed Apr 22, 2020 9:29 am
Forum: Me and my chop... off the net...
Topic: Some 50's pics...
Replies: 9
Views: 10870

Re: Some 50's pics...

Here's a link to a site called the wandering biker (with a newly published guide book) that some of you may enjoy perusing... https://wanderingbiker.net/adventure-biking/
by Prof
Tue Apr 14, 2020 2:42 pm
Forum: Your Chopper Pics
Topic: Long term Triumph Chopper project
Replies: 89
Views: 14729

Re: Long term Triumph Chopper project

Interesting. Whether those imperfections would in the long term cause a problem is not to be known, but if you ever try to pull even a tack weld apart, I would wonder. Still at least you now know you have perfect welds.

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