Search found 4772 matches

by Charles uk
Wed Jan 14, 2009 8:49 am
Forum: General Topics
Topic: Race tune a 40+
Replies: 14
Views: 6080

The quest for speed, is a shared task, 50% hull, 50% motor ish. So on a very easy to push hull with a light load it might be possible to increase the prop pitch & still keep the motor spinning where you want it to be in the rev range. There doesn't seem to be any doubt that the 102, 25 : 1 lower uni...
by Charles uk
Sat Jan 10, 2009 12:33 pm
Forum: General Topics
Topic: Race tune a 40+
Replies: 14
Views: 6080

I have never heard of anyone doing this on a 40 series motor so have no development info sorry. The most powerful of this 64 cc series was the model 60, 60 lbs push from a 40 + with a 3.5 : 1 gearbox, Amal 416 carb & a CDI ignition. The cheapest way would be to buy yourself a model 60, as a good car...
by Charles uk
Sat Jan 10, 2009 12:08 pm
Forum: Help
Topic: spluttering 40 plus
Replies: 5
Views: 3527

Check the magneto base plate is in the right place & is not loose.
by Charles uk
Fri Jan 09, 2009 9:56 am
Forum: General Topics
Topic: Little forty on the bay?
Replies: 3
Views: 2118

That looks very honest up to the price.
Charles P has his share of these & should be able to wax lyrical
by Charles uk
Wed Jan 07, 2009 2:27 pm
Forum: General Topics
Topic: Not a seagull... but what... Twin
Replies: 35
Views: 14264

What us freezing poms would like to know

Cubic capacity?
Horse power?
Where did most of the parts come from?
Which decade were these models made in & where & for whom, & what else did they produce?

In other words a brief potted history of the Riptide model range & history.
by Charles uk
Tue Jan 06, 2009 1:19 am
Forum: General Topics
Topic: 102 gearbox ratios
Replies: 15
Views: 6131

The carb was made by Amal for any 2 stroke motor manufacturer who required a 20mm carb for their application, depending on their needs & performance requirements. The 420 as fitted by Seagull to the 170 or the 160 inboard was fitted with a 140 main jet, which enabled the owner to fine tune their mix...
by Charles uk
Mon Jan 05, 2009 11:35 pm
Forum: General Topics
Topic: 102 gearbox ratios
Replies: 15
Views: 6131

If the plug is the right colour, it ain't broke so don't fix it.
by Charles uk
Mon Jan 05, 2009 7:29 pm
Forum: General Topics
Topic: 102 gearbox ratios
Replies: 15
Views: 6131

I've been called a Moron before, but never an oxymoron do I have to get an O2 mobile phone? Sorry your not going to get big porting diffences with 102 cylinders, only minor ones. So here's your shopping list, SD cylinder with cleaned & gas flowed ports, clean water jacket & 5/8" reach spark plug. SD...
by Charles uk
Mon Jan 05, 2009 1:21 pm
Forum: General Topics
Topic: Stainless Bolt Upgrade Question
Replies: 7
Views: 3294

I can think of no nuts & bolts used in any of a Seagulls application that are required for a torque greater than 25 foot/pounds. Aluminium would almost serve for this purpose, were it not for heavy handed users like me who feel a little more wouldn't hurt. Charles can you think of any location that ...
by Charles uk
Fri Jan 02, 2009 8:21 am
Forum: General Topics
Topic: Was Lerryn Race Worth A Five Hour Drive?
Replies: 24
Views: 11255

Without being rude, cos I know he sort of won, well in spirit anyway.

I would say that 102 on the back of the white fibreglass "clinker" needs a height adjustment collar, it's about 6 inches too low.
by Charles uk
Tue Dec 30, 2008 12:52 pm
Forum: General Topics
Topic: Not a seagull... but what... Twin
Replies: 35
Views: 14264

Citroen 2CV 425 & 605 cc 4 stroke if I remember right

Check your messages
by Charles uk
Tue Dec 30, 2008 12:48 pm
Forum: General Topics
Topic: Not a seagull... but what... Twin
Replies: 35
Views: 14264

They sound just like a Seagull with less vibration, as both cylinders fire at the same time, they have a common crankcase. It would be interested to learn what controls the induction timing, many people made motors of this layout, from the 1920s to the 1970s, smoother but heavy. Most of them ranged ...
by Charles uk
Tue Dec 30, 2008 10:29 am
Forum: General Topics
Topic: Not a seagull... but what... Twin
Replies: 35
Views: 14264

I would bet it's not English.
Check the threads for UK, US, europe, who made the spark plug, ignition, & carb.

Sorry mate.
by Charles uk
Mon Dec 29, 2008 11:42 pm
Forum: General Topics
Topic: New Year
Replies: 3
Views: 2653

If it's 2 days for you it's nearly 2.5 for us!
by Charles uk
Mon Dec 29, 2008 8:21 pm
Forum: For Sale
Topic: Navy Seagull for sale
Replies: 8
Views: 5070

A very nice looking piece of work, but sorry to say, a bitsa, made with quite a lot of new bits to. It has a Wartime crankcase, lower unit & prop, flywheel & cover & carb, from the number which should make it an early SD the brass bits on the carb would have been chromed as would the water & fuel pi...