Glueing plastic part for motor?

[Saskatoon2005]

Hello all, I have a plastic "throttle" part that broke and am unable to get it new. Is there any product on the market that will glue it back together and make it as strong as it ever was?

 

[byacey]

Re: Glueing plastic part for motor?

Depends on the type of plastic, but G2 epoxy by Industrial Formulators will glue just about anything together. If you have a Lee Valley store in Saskatoon, they stock it.

 

[Saskatoon2005]

Re: Glueing plastic part for motor?

I already tried crazy glue and it didn't hold up...now to get rid of the old crazy glue spill over....any ideas on that?

 

[rickdb1boat]

Re: Glueing plastic part for motor?

Don't know if they have Gorilla glue up there in Canada, but it's some tough stuff...The epoxy sounds good, though.......<br /><br />gorillaglue.com

 

[Saskatoon2005]

Re: Glueing plastic part for motor?

I always thought that gorilla glue was for wood! It says that it may not work for some types of plastic....how do I figure out what type of plastic mine is? LOL!

 

[ezeke]

Re: Glueing plastic part for motor?

My nephew says you have to "weld that plastic":<br /><br />Weld Plastic Click Here

 

[Saskatoon2005]

Re: Glueing plastic part for motor?

Hobby glue won't "hold" the pieces together tight enough. There is alot of pressure on the piece and I need a very strong bond!

 

[nektwister]

Re: Glueing plastic part for motor?

gorilla glue will work but you must clamp the peices together and dont use too much because it does expand thus the use of the clamp if you cant clamp it or they have epoxy glue that is made for that it isnt clear kinda milky white and its two parts i had success with both these glues just securing both peices together is the main thing and roughen both peices alittle then clean with acetone and apply glue and try to secure them together. Remember gorilla glue is a foam type glue and expands greatly significant pressure is required to keep the peices from spreading apart.

 

[OBJ]

Re: Glueing plastic part for motor?

What part are you looking for toon? Maybe someone here knows where to get one. Give us a hp, year and what part ya' need.

 

[Saskatoon2005]

Re: Glueing plastic part for motor?

Well the part I require is off of a 1973 Mercury 7.5 H.P. outboard. The original part number is #60860 and then it turned into part number #63697A1 before finally becomming No Longer Available. This part is the throttle linkage part joining the turning throttle handle to the moving megneto that is under the flywheel. It is also found on 9.8 H.P. Mercurys as well.<br /><br />Check this out...<br /><br /> http://www.sandslave.com/merc/index.html

 

[Paul Moir]

Re: Glueing plastic part for motor?

Looks like you have lots of room for reinforcement. If it were here, I would clean it really well to remove any grease & oil, crazy glue the cap back on, roughen the end with about 80 grit, and then build up epoxy & fiberglass over the cracked joint for strength. Then finally redrill that hole.<br />Now mind you, I have all that sort of stuff at hand.

 

[Saskatoon2005]

Re: Glueing plastic part for motor?

That is a pretty good idea. But the pic should have shown you that the part has the ability to be set by two set screws for WOT and idle. If I make the reinforcement too thick then I can't have these things on there. How thin can one person make the epoxy and fiberglass, but still have it very strong?

 

[byacey]

Re: Glueing plastic part for motor?

G2 epoxy is what they use for laminating wood aircraft propellors. Very strong, in fact THE strongest epoxy made.It doesn't take much. I would just scrape away the crazy glue the best you can. You have to position the parts to be epoxied so they can't move, because the G2 takes about 12 hours to start setting. 3 days for proper curing. Once it sets, the plastic will never break at that spot again.

 

[Saskatoon2005]

Re: Glueing plastic part for motor?

Sold! I will try and find some G2 epoxy and try it out on this piece of plastic.

 

[byacey]

Re: Glueing plastic part for motor?

When you mix the G2 components, mix it for at least 20 minutes. Thorough mixing is important for this stuff to properly cure. It turns kind of a creamy yellowy white color when mixed. When you think it's mixed well, mix it some more to be sure. Wear rubber gloves as it can irritate the skin for some people. Don't starve the glue joint by squeezing out all the excess glue by over clamping, and try to build up a thin layer on the outside of the plastic on both sides of the crack. You may have to do this as a second application a day or so later, when you can lay the piece with the cracked side facing up so the epoxy doesn't run off before it sets.

 

[Rattle-]

Re: Glueing plastic part for motor?

Hey Saskatoon2005,<br />If you can't find any of the other types of Epoxies they have suggested try JB WELD, at Canadian Tire. I've used it on everything.You can grind,drill and tap this stuff.<br />Hope this helps

 

[Saskatoon2005]

Re: Glueing plastic part for motor?

Hey Rattle, <br /><br /> Have you used it on plastics? Does it hold up to the vibration and abuse put out my outboards? Thanks for your help. I appreciate it.

 

[JB]

Re: Glueing plastic part for motor?

Saskatoon:<br /><br />Your post in the Merc Forum is in the correct place and got plenty of good advice.<br /><br />Duplicating posts into incorrect fora may seem like a way to get better feedback, but all it really does is annoy helpers and get good information into places where people with similar problems will not find it.<br /><br />Please post only in the appropriate fora, and do so only once.