Reply
 
Thread Tools Search this Thread
 
Old 05 February 2014, 22:46   #1
Member
 
Country: USA
Town: Seattle, Washington, USA
Make: Zodiac Futura Mk IIC
Length: 3m +
Engine: Honda 20hp 4-stroke
Join Date: Aug 2013
Posts: 50
Making my own launch wheels, have materials questions.

The Zodiac-brand wheels look nice, but the price makes my eyes water. I've resolved to make my own. I plan on making the legs from 1.25 inch stainless square-section tubing. Can anyone tell me what thickness of steel I should be using (10-14 gauge)?
__________________

__________________
Wild_Bill is offline   Reply With Quote
Old 06 February 2014, 02:43   #2
Member
 
Peter_C's Avatar
 
Country: USA
Boat name: Uh...a kayak?
Length: 4m +
Join Date: Dec 2009
Posts: 1,485
Size of tyres, design, mounting, weight of boat, planned type of surfaces for rolling over, all factor into the necessary thickness. No way would I go less than 10 gauge, but I am probably the wrong person to ask, as I overbuild most everything. I used 3/16" for the mounts and the legs, but I have 19" (49cm) tyres, that requires very long legs. My axles are 1" x 1/4". I spent waaaay more than a pair of Zodiac wheels, but there is really nothing made to roll my heavy boat across a soft sand beach. Building is not always cheaper.

What do you plan to use for tyres? Got a link to the tyres? Axle size? How do you plan on mounting them to the boat?
__________________

__________________
Peter_C is offline   Reply With Quote
Old 06 February 2014, 04:41   #3
Member
 
steco1958's Avatar
 
Country: UK - England
Town: West Bromwich
Boat name: Ellie V
Make: Excel Voyager 520
Length: 5m +
Engine: Evinrude 75 HP
MMSI: 235 908 287
Join Date: May 2012
Posts: 680
shame you not in the UK, I have a set in my loft !!
__________________
steco1958 is offline   Reply With Quote
Old 06 February 2014, 05:42   #4
Member
 
Country: UK - England
Town: St Ives
Boat name: Jessy
Make: Seago
Length: under 3m
Engine: honda 2.3
Join Date: Jan 2014
Posts: 29
I am just making some for my sib.Instead of using U tube and swiveling upwards i am like you using 2 tubes, one sliding inside the other, with some kond of lock pin. keeping the wheels out of the water when up limits the size of the wheels and the outer tube. But stronger than U tube, and as you say , far cheaper.
__________________
jep49 is offline   Reply With Quote
Old 08 February 2014, 04:07   #5
Member
 
Country: UK - England
Town: Sevenoaks
Make: Excel
Length: 4m +
Engine: Mercury 25hp
Join Date: Oct 2008
Posts: 26
Quote:
Originally Posted by steco1958 View Post
shame you not in the UK, I have a set in my loft !!
If you're looking to get rid I will take them off you.
Let me know what you'd like for them.
Cheers.
__________________
XP_Dude is offline   Reply With Quote
Old 14 February 2014, 07:22   #6
Member
 
Country: USA
Town: Seattle, Washington, USA
Make: Zodiac Futura Mk IIC
Length: 3m +
Engine: Honda 20hp 4-stroke
Join Date: Aug 2013
Posts: 50
OK, I ended up with 1.5 inch x 0.12 inch T-316 stainless square tube. Heavy-azz shiznit. I learned that T-316 stainless is more corrosion resistant than the more common type 304 stainless, and therefore preferred for marine applications.

https://en.wikipedia.org/wiki/SAE_steel_grades
__________________
Wild_Bill is offline   Reply With Quote
Old 14 February 2014, 11:24   #7
Member
 
Hightower's Avatar
 
Country: UK - England
Town: Fareham
Length: 6m +
Join Date: Sep 2003
Posts: 7,855
316 Stainless for marine applications all the way!

I made a pair of launching wheels for my SIB a few years ago.

Couple of pneumatic jockey wheels from eBay and square box section ss with a U shaped bracket for it to sit in. This added sideways stability when moving the boat around and provided a position in which to drill the hole for the hinge.

I profiled a special "key" shaped hole in the box section to enable the hinge to drop in to a slot and lock in to position but to still provide rotational movement to the leg.

Inside and hidden from view is a length of bungee cord. This attaches between the wheel bolt and hinge to provide tension and thus stops the leg from falling out of position.
Attached Thumbnails
Click image for larger version

Name:	100_1200.jpg
Views:	178
Size:	127.4 KB
ID:	90849   Click image for larger version

Name:	100_1189.jpg
Views:	137
Size:	129.0 KB
ID:	90850   Click image for larger version

Name:	100_1190.jpg
Views:	132
Size:	87.5 KB
ID:	90851   Click image for larger version

Name:	100_1196.jpg
Views:	135
Size:	145.6 KB
ID:	90852   Click image for larger version

Name:	100_1220.jpg
Views:	144
Size:	130.4 KB
ID:	90853  

__________________
Andy

Looks Slow but is Fast
Member of the ebay Blue RIB cover club.
Hightower is offline   Reply With Quote
Old 22 February 2014, 00:29   #8
Member
 
Country: USA
Town: Seattle, Washington, USA
Make: Zodiac Futura Mk IIC
Length: 3m +
Engine: Honda 20hp 4-stroke
Join Date: Aug 2013
Posts: 50
Nice work.
__________________

__________________
Wild_Bill is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off





Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -5. The time now is 02:20.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.