Search found 8 matches

by Humphrey Smith
Sun Jul 16, 2023 6:23 pm
Forum: Engine & Transmission Shop
Topic: 1976 900SS kickstart lever.
Replies: 0
Views: 5352

1976 900SS kickstart lever.

Does anyone know whether levers are currently being manufactured or sold. Mine is showing wear "ovalling" of the hole where the lever rotates in the knuckle casting.
by Humphrey Smith
Fri Jun 16, 2023 5:49 pm
Forum: Carburettor & Fuel System Shop
Topic: PHM40 Synching Query
Replies: 7
Views: 11512

Re: PHM40 Synching Query

Gauge setup bungee'd to bike.
by Humphrey Smith
Fri Jun 16, 2023 5:48 pm
Forum: Carburettor & Fuel System Shop
Topic: PHM40 Synching Query
Replies: 7
Views: 11512

Re: PHM40 Synching Query

A shot of the spark plug terminal extenders that I use. These enable me to short out each cylinder in quick succession (with a screwdriver) to check for even running.
by Humphrey Smith
Fri Jun 16, 2023 5:40 pm
Forum: Carburettor & Fuel System Shop
Topic: PHM40 Synching Query
Replies: 7
Views: 11512

Re: PHM40 Synching Query

I have decided to post the doc that I have been putting together on this topic. Any comments from learned members would be appreciated. Posting it warts 'n' all; I'm sure there're lots of errors that I need setting straight on. The bike is a 1976 900SS with an engine rebuilt by VeeTwo (some 20 years ...
by Humphrey Smith
Fri Jun 16, 2023 5:21 pm
Forum: Carburettor & Fuel System Shop
Topic: PHM40 Synching Query
Replies: 7
Views: 11512

Re: PHM40 Synching Query

Yes, that is what I meant by "hanging" Craig. Many thanks for your input.

I would seem that getting two cylinders to run evenly through large-bore 40mm carbs is truly a dark art. The concept is simple enough but achieving it is no easy task. I'm in awe of the veterans who do it by ear... That and ...
by Humphrey Smith
Tue Jun 13, 2023 6:58 am
Forum: Carburettor & Fuel System Shop
Topic: PHM40 Synching Query
Replies: 7
Views: 11512

Re: PHM40 Synching Query

Firstly, thank you very much for your reply to my query, Craig - much appreciated.

Everything you stated makes perfect sense to me until the last sentence:


So back to the gauges. Open up the throttle to around 3,000 and this time adjust the cable adjusters to obtain equal vacuum readings. Don't ...
by Humphrey Smith
Wed Jun 07, 2023 7:57 am
Forum: Carburettor & Fuel System Shop
Topic: PHM40 Synching Query
Replies: 7
Views: 11512

PHM40 Synching Query

I rebuilt the PHMs for my '76 900SS over the winter and I am now trying to get them properly tuned and synched. I have synched them using vacuum gauges running from each manifold and both slides are lifting in unison. All appears good and the engine idles nicely.

One trick that I learned some years ...
by Humphrey Smith
Wed Jul 13, 2022 11:46 pm
Forum: Introduce Yourself
Topic: New member from Fukuoka, Japan.
Replies: 1
Views: 6410

New member from Fukuoka, Japan.

Glad to be on this forum.

I have lived in Japan for 30 years and run a '76 900SS. I bought the bike from South Australia some 20 years ago and had the motor rebuilt by VeeTwo. I believe it was sold new in SA but I have no proof of this.

よろしくお願いします!

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