DN NA Class  

DN America Forums

June 01, 2020, 10:38:57 AM *
Welcome, Guest. Please login or register.

Login with username, password and session length
 
   Home   Help Search Login Register  
Pages: [1]
  Print  
Author Topic: Rear Deck Block Size  (Read 8547 times)
sonic
Newbie

Posts: 15


« on: February 12, 2011, 05:05:28 PM »

Fairly new to the sport. Have an older DN just put a rear block adjuster on the deck. Was wondering what the difference is between running small blocks opposed to larger ones?
Logged
Bob Rast DN1313
Newbie

Posts: 148



WWW
« Reply #1 on: February 13, 2011, 08:07:55 AM »

Not  much difference,some sailors like small blocks to get boom lower on the deck.
some like larger blocks better mechanical advantage, more head room when tacking
And some sailors use a riser with either small or large blocks
Bob rast
DN 1313
Logged
sonic
Newbie

Posts: 15


« Reply #2 on: February 13, 2011, 06:19:51 PM »

Thanks for the feedback bob just got a new boom from ron and still figuring out the block placement. I think i will switch to the larger blocks i could use more head room.
Logged
Bob Rast DN1313
Newbie

Posts: 148



WWW
« Reply #3 on: February 13, 2011, 07:07:53 PM »

I use a 2" riser and like the clearance,when on port you can sheet out a little and look under the boom instead of a small window in the sail also keeps you goggles on when you tack .
I started with a track on a 1 Inch square tube (steering tube and eventually added another piece under  to get 2"

Logged
sonic
Newbie

Posts: 15


« Reply #4 on: February 15, 2011, 06:26:11 PM »

Thanks for the advise going to start off without it and see how i do. Always have the summer to work on the riser and i like the pics you posted.
Logged
Geoff Sobering
Class Officer
***
Posts: 461



WWW
« Reply #5 on: February 15, 2011, 11:35:01 PM »

Thanks for the advise going to start off without it and see how i do.

That's the approach I would take.

FWIW, I think the two sizes of blocks people commonly use are 40mm and 57mm, so the difference isn't very big either way.

There's a related post about boom/deck height (and the reason you want the shortest distance) I made in a thread about the Forstman boom that might be interesting: http://dnamerica.org/forum/index.php?topic=1061.msg3529#msg3529
Logged

Man Why You Even Got to Do a Thing
sonic
Newbie

Posts: 15


« Reply #6 on: February 16, 2011, 04:44:10 PM »

Funny i read that the other day. I found the forstman boom did make a difference in performance. I'm just tweaking the block sizes around and the placement of them.
Logged
Pages: [1]
  Print  
 
Jump to:  

Powered by MySQL Powered by PHP Powered by SMF 1.1 RC3 | SMF © 2001-2006, Lewis Media Valid XHTML 1.0! Valid CSS!