Search found 116 matches

by Sandro_Picchio
Tue Dec 03, 2024 5:40 pm
Forum: Report a forum problem
Topic: Username
Replies: 1
Views: 9813

Username

Good afternoon,
I am registered since 2011.To day, trying to login to the forum I got the message "username not registered".
There is the possibility for password recovering but not for username. Where can I find my correct username? To me it should be "Sandro Picchio" but it is no more accepted ...
by Sandro_Picchio
Thu May 04, 2023 9:34 am
Forum: General Topics
Topic: Seagull in film
Replies: 0
Views: 29053

Seagull in film

Hi all,
I recently saw on TV a film - I think (not sure) the title is "Storm Boy" about an Australian boy growing three orphaned pelikans.
A Seagull (110?) has a rather important role in the story, both as an engine for a little boat and as a grinder/mixer on dry land for the fish pudding nourishing ...
by Sandro_Picchio
Sun Feb 13, 2022 11:42 pm
Forum: General Topics
Topic: HP and Thrust
Replies: 11
Views: 20438

Re: HP and Thrust

Thank you for sharing the interesting old document.
It says that there is a difference between results of bollard pull and of moving boat test. Unfortunately it does not say in which direction is dhe difference.

I wrote a post yesterday and thought to have sent it but I don't find it in the thread ...
by Sandro_Picchio
Sat Feb 12, 2022 4:07 pm
Forum: General Topics
Topic: HP and Thrust
Replies: 11
Views: 20438

Re: HP and Thrust

I fully agree that, at same throttle opening, revs are higher when the motor is free to move forward in the water than when it is kept fast on a dock.
But I think that just this increase in revs means a lower torque load on the motor.
What can be argued is: Is propeller torque proportional to ...
by Sandro_Picchio
Sat Feb 12, 2022 11:16 am
Forum: General Topics
Topic: HP and Thrust
Replies: 11
Views: 20438

Re: HP and Thrust

I would say that more revs means less torque load on the motor from the prop that is less push.
Usually at same throttle opening easing the load (torque) revs increase.
I may be wrong.
by Sandro_Picchio
Fri Feb 11, 2022 6:07 pm
Forum: General Topics
Topic: HP and Thrust
Replies: 11
Views: 20438

Re: HP and Thrust

Quote: "Which was higher than the static bollard pull".

So between readings done against a static bollard or in a boat underway there is difference.
Is this difference large?
I expected that the value given by the bollard pull test would have been higher than that on a moving boat.
If one start ...
by Sandro_Picchio
Fri Feb 11, 2022 5:50 pm
Forum: General Topics
Topic: HP and Thrust
Replies: 11
Views: 20438

Re: HP and Thrust

Post edited. See next post.
by Sandro_Picchio
Sun Nov 21, 2021 3:19 pm
Forum: General Topics
Topic: Amal carb banjo fiber washers
Replies: 10
Views: 13258

Re: Amal carb banjo fiber washers

The fuel tap leaking might be fixed by removing the cork part and boiling it in water.
by Sandro_Picchio
Sun Nov 21, 2021 3:11 pm
Forum: General Topics
Topic: Restoration
Replies: 9
Views: 14414

Re: Restoration

After long search I could find gear oil 140 in a lorry repair workshop.
Hope this helps.
by Sandro_Picchio
Thu Sep 23, 2021 6:03 pm
Forum: Help
Topic: Heat Transfer - POR-15
Replies: 7
Views: 22988

Re: Heat Transfer - POR-15

Did it crack because of frozing in the shed or just because of the push of the swelling rust?

Sandro
by Sandro_Picchio
Sat Jul 31, 2021 5:20 pm
Forum: General Topics
Topic: What's this Seagull spanner?
Replies: 4
Views: 15514

Re: What's this Seagull spanner?

Hi Whigum,
This spanner came with my new 40+ in 1963. (and is still with it).

Sandro
by Sandro_Picchio
Sun May 16, 2021 5:59 pm
Forum: General Topics
Topic: Early British Seagull tank
Replies: 12
Views: 26462

Re: Early British Seagull tank

Very interesting stories.
by Sandro_Picchio
Mon May 03, 2021 11:48 am
Forum: General Topics
Topic: You Tube Videos that should provoke some conversations
Replies: 5
Views: 11102

Re: You Tube Videos that should provoke some conversations

i also stopped watching.
What amazed me is the number of positive, approving comments to the video.

Sandro
by Sandro_Picchio
Wed Apr 28, 2021 11:08 am
Forum: General Topics
Topic: Featherweight “Special”
Replies: 7
Views: 11412

Re: Featherweight “Special”

Would be charmed to hear the sound.

I would have kept the mechanical function of the exhaust by removing the after half for most of le length, keeping the ends intact.

Sandro
by Sandro_Picchio
Tue Apr 20, 2021 9:15 am
Forum: General Topics
Topic: One for the kids
Replies: 9
Views: 15515

Re: One for the kids

Thank you Journeyman,
I did not know Optimist already existed in the 40's. I considered it as a modern boat. (although "modern" in my thinking would be "vintage" in most's).
Sandro