Home | Classifieds | History | Technical | Links | Store | About Us | Email
Topics Topics Edit Profile Profile Help/Instructions Help Member List Register  
Search Last 1|3|7 Days Search Search Tree View Tree View  

Clutch not working

Old Marine Engine » Blaxland » Clutch not working « Previous Next »

Author Message
Top of pagePrevious messageNext messageBottom of page Link to this message

David Williams
New member
Username: davidywilliams

Post Number: 1
Registered: 02-2016
Posted on Tuesday, March 01, 2016 - 05:01 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

I recently bought an old wooden boat with a 3.5hp Chapman and Blaxland engine. The engine works like a dream. However I can't shift the clutch out of gear and the prop is always engaged. Any advice how to fix this would be great.
Top of pagePrevious messageNext messageBottom of page Link to this message

Allenf
New member
Username: alf

Post Number: 3
Registered: 07-2015


Posted on Tuesday, March 01, 2016 - 05:17 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)



The wedge slides up and down the tapered slot expanding the Dog Clutch to lock the propeller shaft in gear .
The wedge might be rusted/frozen hard to budge.

In my opinion it's better not to slip the clutch.
In or Out of gear is best with no unnecessary wear to the mechanism.
Top of pagePrevious messageNext messageBottom of page Link to this message

Greg Y
Senior Member
Username: gregoryan

Post Number: 133
Registered: 09-2004


Posted on Tuesday, March 01, 2016 - 10:32 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Anyone remember the ol' hireboats with No Clutch!? I s'pose they made em like this so in the event of a bad hirer - they would not be able to rev the engine full throttle - wondering why it's not moving forward - only then to Bang it into gear!
At one marina, Someone altered the hireboat sign over the boatshed, to read; " Drive Yourself Bats" !
Top of pagePrevious messageNext messageBottom of page Link to this message

Ross Cook
Visitor
Posted on Tuesday, March 01, 2016 - 11:18 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

can you post a pic to show if it does have a clutch and if so what type it is?
Top of pagePrevious messageNext messageBottom of page Link to this message

Andrew Munns
Senior Member
Username: johnoxley

Post Number: 154
Registered: 04-2010
Posted on Tuesday, March 01, 2016 - 11:25 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

What you don't have, don't break down. Berowra hireboats had Hall engines with the lever/gear/sector start - Permanently coupled. This was normal. Most oldish ships and boats had reversing engines (steam and diesel) so solid coupled shafts were not considered that unusual. The Chapman/Blaxland clutch is simple, but does need to be kept clean and lubricated. It also needs to be kept free of salty bilge water.
Top of pagePrevious messageNext messageBottom of page Link to this message

David Williams
New member
Username: davidywilliams

Post Number: 2
Registered: 02-2016
Posted on Wednesday, March 02, 2016 - 12:28 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Thanks for the advice. I'll have a closer look at the wedge.

Here's the engine and gear set up.

http://youtu.be/2oMRUOLRyOE
Top of pagePrevious messageNext messageBottom of page Link to this message

Ross Cook
Visitor
Posted on Wednesday, March 02, 2016 - 12:41 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

do you get any movement with the clutch handle, is it going backwards and forwards?
Top of pagePrevious messageNext messageBottom of page Link to this message

Allenf
Member
Username: alf

Post Number: 4
Registered: 07-2015


Posted on Wednesday, March 02, 2016 - 05:14 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Just looking at the youtube clip.
Try removing the block from behind the clutch leaver, it could be used to hold the leaver in place.
Some use a piece of rope to hold leaver in or out of drive. As the propeller spins it actually drives the whole shaft forward inside the dog clutch and into gear making it necessary to hold the leaver out of gear.

A firm hand is required on the dog clutch although don't rip the bottom out of the boat.

Add Your Message Here
Post:
Bold text Italics Underline Create a hyperlink Insert a clipart image

Username: Posting Information:
This is a public posting area. Enter your username and password if you have an account. Otherwise, enter your full name as your username and leave the password blank. Your e-mail address is optional.
Password:
E-mail:
Options: Automatically activate URLs in message
Action:

Administration Administration Log Out Log Out   Previous Page Previous Page Next Page Next Page

Home | Classifieds | History | Technical | Links | Store | About Us | Email
&copy 2005 OldMarineEngine.com, P.O. Box 188, Forest Dale, VT 05745-0188 • Phone: 802-247-4864 • All rights reserved.
   Marine Engine Seloc Repair Manual Lookup Tool

marine gas engine repair and restoration