Tracy Tillman wrote:

While you are at Quest, I think that you could do a wonderful
service to the Dragonfly tug owner population by asking Russell Brown, if you
could take some pictures of the hydraulic brakes and hand brake lever set-up on
his Dragonfly and ask him what components he used.

The standard drum brakes hardly work at all for more powerful tugs. The system
could also be used on other types of tugs.

Here are those pictures:

Tim Collard <<Tim.Collard>>
wrote back to say:

Here is the information on the disc brake setup/wheel package I
installed on Russ’s silver bullet tug and also on our own tug.

The brake package was purchased from Tracy O’brian. They are the C-90 Hydraulic
disc brakes. He provides everything you need to do this, the lazer cut plates,
tubing, fittings etc. I had to weld his back plate to the Dragonfly axel. I also
like his tri-star wheels which are 30% stronger than the normally provided
wheels. These wheels have the pins installed that interact with the disc. He can
also provide pin plates for stock Dragonfly wheels. In Colorado we use trailer
tires instead of ultralight tires. All this is heavier, but very strong and
sustainable. Great for rough fields and bad landings and no more flats.

Http://www.tracyobrien.com/

I purchased the master cylinder from Hegar Manufacturing. Tracy O’Brian also
sells this master cylinder/bicycle brake handle set up, but is offering it in a
5/8" diameter cylinder. I would recommend the 3/4” diameter master as
manufactured by Hegar. This bicycle brake handle/master cylinder is designed to
mount on a 1” diameter control stick. I machined a bushing to install on the
stock square Dragonfly throttle lever. To finish the installation I machined 2
black nylon cylinder which I screwed through the top on the bicycle brake handle
to hook your fingers onto while braking.

Http://hegar4.com/zc/index.php?main_page=index&cPath=95

The brakes are very effective, reliable and work well especially on the heavier
914 tugs.