Search found 33 matches

by doppler491
Mon May 21, 2018 10:44 am
Forum: Events and Racing Seagulls
Topic: Bermudian Hull Build
Replies: 4
Views: 1586

Re: Bermudian Hull Build

Yes, same style as #13 but we are <16’ long. Width is mid 30s whereas in the 24’ hulls (like #13) it is less than 30”. The width is something we play around with as we try to find max speed.
by doppler491
Mon May 21, 2018 12:30 am
Forum: Events and Racing Seagulls
Topic: Bermudian Hull Build
Replies: 4
Views: 1586

Re: Bermudian Hull Build

More pics. Will post video when we test
by doppler491
Mon May 21, 2018 12:27 am
Forum: Events and Racing Seagulls
Topic: Bermudian Hull Build
Replies: 4
Views: 1586

Bermudian Hull Build

Decided at the last minute to build a new hull for this year’s RISR. Here are some pics of the process... In total three pieces of 1/4” plywood was used (for hull + deck). 1x2 was used to attach the deck to and 1x3 was used as stringers. Transom was I believe a spare piece of 1/2” that was laying ar...
by doppler491
Thu May 11, 2017 1:32 pm
Forum: Events and Racing Seagulls
Topic: Fast 170
Replies: 18
Views: 5543

Re: Fast 170

It's on a Yamaha leg from a 5R and then uses a 170 cylinder, head, piston, and casings (but bearings have been added).
Built it for a bit of fun to see just how fast a base Seagull motor could go. You can hear it from a mile away!
by doppler491
Wed May 10, 2017 6:14 pm
Forum: Events and Racing Seagulls
Topic: Fast 170
Replies: 18
Views: 5543

Re: Fast 170

by doppler491
Mon May 30, 2016 9:14 pm
Forum: General Topics
Topic: My motor
Replies: 19
Views: 5314

Re: My motor

Charles, any plans to come back this year and do the race again? We've ironed out a few kinks and are now +600rpm from when we raced in the Ironman. Looking forward to seeing what we can do in a few weeks..
by doppler491
Thu Mar 31, 2016 11:09 pm
Forum: General Topics
Topic: My motor
Replies: 19
Views: 5314

Re: My motor

It's Andrew. We built this for the unlimited class as we wanted a real Seagull to be faster than any Sport with pipe, etc. However, with JJ's planing hull we will need something similar if we want to keep up with him. We did the Ironman a few weeks ago in about 1:40 including a stop for fixes on Sou...
by doppler491
Wed Mar 30, 2016 9:40 pm
Forum: General Topics
Topic: My motor
Replies: 19
Views: 5314

Re: My motor

I couldn't afford to have new casings cast like Charles did! Powerhead is a looper, yes. Carb is big (and yes, off a moped) but we wanted to see just how fast we could make it go. If you want to add bearings to a set of 170 casings you will need to build up the outside as there isn't enough meat on ...
by doppler491
Wed Mar 30, 2016 7:08 pm
Forum: General Topics
Topic: My motor
Replies: 19
Views: 5314

Re: My motor

6,980 rpm
Charles will need to add an expansion chamber to keep up ... :lol:
Video at idle: http://youtu.be/ja39zS-4dwU
by doppler491
Wed Mar 30, 2016 1:49 pm
Forum: General Topics
Topic: My motor
Replies: 19
Views: 5314

My motor

It's fast (it's a 170 on a 5R leg)
image.png
by doppler491
Wed Aug 19, 2015 1:57 pm
Forum: General Topics
Topic: New Zealand
Replies: 0
Views: 2707

New Zealand

Will be in NZ next month and was hoping to find some Seagull spares to bring home with me... Anybody got any links or names of who to contact? More than willing to share some Bermudian knowledge to anybody who is interested. Will be driving down from Auckland to the South Island
by doppler491
Mon Jul 11, 2011 12:54 am
Forum: Events and Racing Seagulls
Topic: Bermuda RISR 18th June 2011
Replies: 31
Views: 12226

Re: Bermuda RISR 18th June 2011

Is there a chance of going short and fast, or are the waves too big. There must be a limit to a length that is viable; semi displacement must be valid. Also as hull weight is directly proportional to length, is there a point at which additional length adds little to speed. H-A Two people have to go...
by doppler491
Wed Jul 06, 2011 6:29 pm
Forum: Events and Racing Seagulls
Topic: Bermuda RISR 18th June 2011
Replies: 31
Views: 12226

Re: Bermuda RISR 18th June 2011

Build a card copy of a real Bermuda hull...use it as inspiration! Don't completely deck it in though - he can't move in order to optimize weight distribution. http://www.saving-old-seagulls.co.uk/forum/download/file.php?id=1218&mode=view http://www.saving-old-seagulls.co.uk/forum/download/file.p...

Go to advanced search