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by MARK.WALSH
Sun Jan 13, 2019 1:02 pm
Forum: Four stroke
Topic: solex - poor mpg
Replies: 21
Views: 4668

Re: solex - poor mpg

Thanks Bob
I was hoping for 40+ mpg at least.
Not sure how these carbs respond to ultrasound cleaning and the like - wondered if that might help
Mark
by MARK.WALSH
Sat Jan 12, 2019 7:54 pm
Forum: Four stroke
Topic: solex - poor mpg
Replies: 21
Views: 4668

solex - poor mpg

I took the square 4 for a blast on new years day covering over 70 miles at speeds between 50 and 70mph On the way home I had to hit reserve despite having a good few gallons above the reserve line prior to the journey. I estimate I was getting around 35MPG or so. No leaks - not an overly rich mixtur...
by MARK.WALSH
Fri Jan 04, 2019 5:34 pm
Forum: Main Chat Forum
Topic: Ariel moving day.
Replies: 18
Views: 5921

Re: Ariel moving day.

both beautifully restored bikes and a credit to you
Mark
by MARK.WALSH
Tue Jan 01, 2019 4:57 pm
Forum: Four stroke
Topic: SQ4 Brake Light Switch
Replies: 6
Views: 1412

Re: SQ4 Brake Light Switch

Simes I originally bent the brake rod to fit long before fitting the lower guard . Fortunately it did not need bending again. Attached is the best I can do with the bike in the garage hopefully the brake switch can be seen, and although everything is close , there is no fouling or other contact - De...
by MARK.WALSH
Tue Jan 01, 2019 3:41 pm
Forum: Four stroke
Topic: SQ4 Brake Light Switch
Replies: 6
Views: 1412

Re: SQ4 Brake Light Switch

Simes Only a few months ago I bought one of these for my 51 square 4 and it fits fine I have the brake rod as for that year and it is a tight fit. I've only just put the bike back in the garage after a 75 mile blast down the motorway but will try and get a couple of pics for you if you are having tr...
by MARK.WALSH
Fri Dec 28, 2018 5:15 pm
Forum: Four stroke
Topic: Square Four Push Rods
Replies: 31
Views: 4805

Re: Square Four Push Rods

that's not good Are you sure the engine is timed correctly and the cam is not hitting the pistons? Also are you sure the bottom end of each pushrod is located in the relevant follower - it is possible for two push rods to be operated by one follower if not housed properly (easily done) - check by se...
by MARK.WALSH
Sun Dec 09, 2018 4:01 pm
Forum: Four stroke
Topic: 4G Conrod Advice
Replies: 23
Views: 5060

Re: 4G Conrod Advice

Hi
I agree with Chris - when your bombing along you don't want to worry about a rod failure. These engines sound so busy when your moving along at speed and new rods will give you the confidence to use and appreciate the finer points of the motor
Mark
by MARK.WALSH
Sat Dec 08, 2018 5:00 pm
Forum: Electrics
Topic: square 4 advance retard mechanism
Replies: 6
Views: 6465

Re: square 4 advance retard mechanism

Checked things over thoroughly today and without a doubt I can only tighten up the centre screw if I have a washer/spacer of some kind to stop the two shafts binding. I tried a cut down spring to act like a washer - better, but still binding a bit. Now I've tried a very small section of copper brake...
by MARK.WALSH
Wed Dec 05, 2018 5:17 pm
Forum: Electrics
Topic: square 4 advance retard mechanism
Replies: 6
Views: 6465

Re: square 4 advance retard mechanism

Keith / Paul / Simes thanks for the help and advice clearly something wrong and Drags show the washer to be 185021 on their website. Paul interesting that your washer is not present but the shafts aren't locked. Simes I have the proper screw with the oil hole in the centre but I think Keith is right...
by MARK.WALSH
Sun Dec 02, 2018 3:04 pm
Forum: Electrics
Topic: square 4 advance retard mechanism
Replies: 6
Views: 6465

square 4 advance retard mechanism

Dear all as promised on a different thread/topic I had a look at my cam on my distributor today to see if there was any discernible wear - there was none I'm pleased to say. Looking at the mechanism more closely with the baseplate removed, I noticed I couldn't make the bob weights swing out when tur...

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