Search found 4842 matches

by Charles uk
Fri Oct 31, 2008 12:27 am
Forum: General Topics
Topic: Measuring the power output
Replies: 10
Views: 7327

I spent an hour earlier this evening composing a long post explaining why a static bollard pull was not the best way of doing this & why it often gave a false impression, only to have my wonderful new computer crash as I was posting it. I then had a brain wave. How about a century transom bracket wi...
by Charles uk
Thu Oct 30, 2008 1:10 am
Forum: Help
Topic: Correct ignition timing for an AD
Replies: 15
Views: 12095

New computer I'm now able to log on & post, WOOOPEE! During my racing research we have tried all sorts of permutations with the spark timing, all to very little avail. It's true, that if you retard the spark 5 to 15 degrees you can get a smoother, lower tickover speed, which is no use whatsoever, as...
by Charles uk
Thu Apr 10, 2008 5:27 pm
Forum: General Topics
Topic: 170 inner exhaust
Replies: 4
Views: 5211

The inner exhaust on a short shaft is 12" long & 16" for a long, now I can't remember if the measurement is from the top of the mounting plate or the length of the projecting tube. But you should be able to tell from the length of your long shaft one. The face of the mounting plate where it fastens ...
by Charles uk
Tue Mar 25, 2008 6:58 pm
Forum: Help
Topic: 170 RPM
Replies: 3
Views: 4286

What you can rev it up to depends on the condition of your 170. With my race 170 I throttled back at Easter, if the revs exceeded 6500 , as I needed to finish, if I wanted to finish first, With an ok 170 on the back of a 12 foot plus non racing hull I would guess 4000 to 4500 revs should be good. If...
by Charles uk
Mon Mar 24, 2008 8:30 pm
Forum: General Topics
Topic: The Great Waikato Seagull Race.
Replies: 3
Views: 4746

The Great Waikato Seagull Race.

Well the Pom did it this year, actually finished the race, all 88 miles of it, without breaking down & smashing anything. And to top it all I finished first & broke the real British Seagull record leaving the Southern Hemisphere boys with a time of 3 hours 42 minutes that they have to beat to regain...
by Charles uk
Thu Mar 20, 2008 6:39 pm
Forum: Help
Topic: grease nipples on lower unit 102
Replies: 14
Views: 10691

I would have thought this gearbox would look at it's best with the 2 bladed "swept back prop" or the "bow tie" slightly later model, both of which would be right.
by Charles uk
Fri Mar 14, 2008 8:32 pm
Forum: General Topics
Topic: Silicone gasket choice
Replies: 16
Views: 12559

I heat mine with a gas torch gently all over, on a block of wood until I see the first few green flickers appear in the gas flame, That's it, remove heat & let it cool. This is what I do every time I remove a head, then I coat with a very thin coat of any high temp RTV. I must have used every colour...
by Charles uk
Fri Mar 14, 2008 7:37 pm
Forum: General Topics
Topic: 170 flywheel
Replies: 6
Views: 6167

No John, I have never seen a bronze bigend cap, I think the bronze bearing gossip originated in Sesgull's R&D dept.
by Charles uk
Fri Mar 14, 2008 6:04 am
Forum: General Topics
Topic: 170 flywheel
Replies: 6
Views: 6167

All the dying 170 rods that I've seen have the bearing surface of the end cap badly worn, bronze as a bearing surface will almost run dry, but aluminium drags badly & wears away quickly without sufficient oil to protect it, leaving too much room for the oil to lubricate properly. So I can't really s...
by Charles uk
Thu Mar 13, 2008 7:32 am
Forum: General Topics
Topic: Interchangeability thread
Replies: 15
Views: 11215

Many 170's have run for years without any problems. By all means check the big end bearing condition, if it's tired fix it, if it's ok use it like it was intended, but don't over rev it out of gear, & run it on 20 : 1. I don't know if this will prevent problems, I use all my 25 : 1 Seagulls at 20 : ...
by Charles uk
Thu Mar 13, 2008 7:22 am
Forum: General Topics
Topic: 170 flywheel
Replies: 6
Views: 6167

Unless the flywheel has 3 number 2BA holes drilled & tapped into the steel center, remove in the normal Seagull manner. If your having a phosphor bronze end cap made, don't worry about the balance factor, but expect to pay 2 ish hours machining time as well as a costly lump of bronze, whoever is doi...
by Charles uk
Wed Mar 12, 2008 8:19 pm
Forum: General Topics
Topic: Interchangeability thread
Replies: 15
Views: 11215

Somewhere at home I have some Autocad drawings of the 170 endcap but they are only hard copies, as the computer they were on died when I get home I could talk to your machinest, To explain where I got to in this quest. the major problem is you could make a batch, but the bolt holes are in different ...