Dunstall Commando front master cylinder

pierodn · Mar 24, 2014

Hi,
It is true that the Dunstall Commando front master cylinder was those equal mounted on Honda 750 K1?.
If it is not true, what was it?.

Ciao.

Piero

ando · Mar 24, 2014

Piero
The master cylinder on my 810 dunstall looks the same as a K1 Honda, has metric threads, and the seal kit and piston from a K1 are identical and work in it so I would say it is
ando

lcrken · Mar 24, 2014

Another yes from me. I had one some years ago, and I also owned a K1 Honda 750, and the master cylinders were the same.

Ken

pierodn · Apr 3, 2014

Please,
Could someone tell me how and where the wires were connected to the electrical installation of the front brake swithc?
That is, where was located the brake switch?
Thanks.
Piero

L.A.B. · Apr 3, 2014

pierodn said:
Could someone tell me how and where the wires were connected to the electrical installation of the front brake swithc?
That is, where was located the brake switch?

There might not have been any switch?

In the UK at least, at that time, there wouldn't have been any legal requirement to have more than one brake system operate the brake light.

gortnipper · Apr 3, 2014

L.A.B. said:
In the UK at least, at that time, there wouldn't have been any legal requirement to have more than one brake system operate the brake light.

And my US '74 mk2 didn't have the front brake switch factory installed (I just did it this past week end).

Time Warp · Apr 3, 2014

pierodn said:
Please,
Could someone tell me how and where the wires were connected to the electrical installation of the front brake swithc?
That is, where was located the brake switch?
Thanks.
Piero

If the Dunstall used a Japanese master cylinder of that period then in its OEM fitment it would have had a pressure activated switch in a splitter block between the top and bottom brake lines and most likely bolted to the lower triple clamp.

My 1974 US spec Mk2a has a switch in the usual position in the master cylinder ?
The banjo bolt pressure switches work well also.

L.A.B. · Apr 3, 2014

Time Warp said:
If the Dunstall used a Japanese master cylinder of that period then in its OEM fitment it would have had a pressure activated switch in a splitter block between the top and bottom brake lines

One option would be a banjo bolt brake light switch.

http://www.demon-tweeks.co.uk/motorcycl ... ght-switch

Dunstall Commando front master cylinder

pierodn

ando

lcrken

pierodn

L.A.B.

Moderator

gortnipper

Time Warp

.......back to the 70's.

L.A.B.

Moderator

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