![Reply](https://www.horizonsunlimited.com/hubb/images/buttons/reply.gif) |
![Old](https://www.horizonsunlimited.com/hubb/images/statusicon/post_old.gif)
31 Jan 2008
|
Registered Users
Veteran HUBBer
|
|
Join Date: Feb 2002
Posts: 212
|
|
How to repair broken carb
Hi all,
Despite being aware that the material that carburettors are made of is very brittle, I still managed to snap off a part of one of the pillars that the float pivot pin pushes through!
It snapped through the hole that the pivot pin locates in, the pin was already three quarters of the way through when disaster struck.
I was thinking of trying to stick it back together with liquid metal, has anyone done this or have a better idea?
Mark
|
![Old](https://www.horizonsunlimited.com/hubb/images/statusicon/post_old.gif)
31 Jan 2008
|
Registered Users
Veteran HUBBer
|
|
Join Date: Jun 2007
Location: Ripley, Derbyshire
Posts: 373
|
|
If your on the raod then give it a go you don't have anything to loose if your at home then troll ebay and the breakers sites as it's just not worth the hassle matey.
|
![Old](https://www.horizonsunlimited.com/hubb/images/statusicon/post_old.gif)
31 Jan 2008
|
Registered Users
Veteran HUBBer
|
|
Join Date: Aug 2007
Location: Sax, Spain
Posts: 901
|
|
ouch!
your in a world of hurt there mark...... Carbs are very delicate and made from a very strange mix of alloy. ( as you have found out)
Your BEST bet, is a secondhand Carby but failing that you could try to fix using JB weld or similar.
What Bike is it? can you post a pic of the Damage?
Martyn
|
![Old](https://www.horizonsunlimited.com/hubb/images/statusicon/post_old.gif)
31 Jan 2008
|
|
Mark,
That post is going to be tricky to fix.
Is it thick enough to drill and pin the centre of the post to give the repair some strength. Or can you slide a short section of tube over the post and fill it with liquid metal. Model shops have a good selection of brass tube; they also have good petrol / fuel resistant glues.
I saw this product at the bike show it maybe an option.
Aluminium Welding
I am sure if you gave them a call they would be able to confirm if it is fixable and maybe put you in touch with someone who could do it for you.
Steve
|
![Old](https://www.horizonsunlimited.com/hubb/images/statusicon/post_old.gif)
31 Jan 2008
|
Registered Users
Veteran HUBBer
|
|
Join Date: Mar 2007
Location: UK
Posts: 4,343
|
|
Metal repair examples and materials
Mark,
Have a look through this thread and it might suggest another material or technique for this delicate repair:-
http://www.horizonsunlimited.com/hub...t=metal+repair
If you do get success it would make a good case/example in that thread!!
Good luck,
__________________
Dave
|
![Old](https://www.horizonsunlimited.com/hubb/images/statusicon/post_old.gif)
31 Jan 2008
|
Registered Users
Veteran HUBBer
|
|
Join Date: Aug 2007
Location: Sax, Spain
Posts: 901
|
|
for future reference ...
Quote:
Originally Posted by Mark
Hi all,
It snapped through the hole that the pivot pin locates in, the pin was already three quarters of the way through when disaster struck.
Mark
|
When, in future you have carbs apart, clean all brass pins with some scotchbrite) or very fine wet n dry, and 'oh so gently' with a round needle file, just make sure the hole for the pin is clear.remove the merest hint of material.
before assembling with the float, push the pin through by Hand, it should be a firm push, not having to tap it or hammer it.
Remove pin, and reassemble, this way it should not ever stick again.
I know this is a bit 'stable door and the horse is gone' but it may help you in future or someone else.
Martyn
|
![Old](https://www.horizonsunlimited.com/hubb/images/statusicon/post_old.gif)
31 Jan 2008
|
![Grant Johnson's Avatar](https://www.horizonsunlimited.com/hubb/customavatars/avatar10401_1.gif) |
HU Founder
Veteran HUBBer
|
|
Join Date: Dec 1997
Location: BC Canada
Posts: 7,266
|
|
Many float pins are knurled on one end, and can only be pushed out one way if you don't want to break the post - notably Bings. Have a CLOSE look at the end of the pin before trying to remove - you should be able to spot the one that is dead round and the one that is a little "rough". Needless to say knock it out from the dead smooth and round end so the rough bit comes out first - and put it back in the same way, smooth end first. It should take almost no pressure to come out. Anything more than a very light tap and look again. A good idea is to hold it in your hand - less pressure on the carb than when it's on the bench.
But now that the horse is out ![Sad](https://www.horizonsunlimited.com/hubb/images/smilies/sad.gif) you should be able to drill a very small hole across the post below the pin and safety wire it on. A dab of jbweld or similar if needed to hold it in place, but only if necessary - I suspect a good safety-wire job will be fine. The safety wire holding my windscreen together has been doing fine for 10 years!
Good luck!
__________________
Grant Johnson
Seek, and ye shall find.
------------------------
Inspiring, Informing and Connecting travellers since 1997!
www.HorizonsUnlimited.com
|
![Old](https://www.horizonsunlimited.com/hubb/images/statusicon/post_old.gif)
31 Jan 2008
|
![*Touring Ted*'s Avatar](https://www.horizonsunlimited.com/hubb/customavatars/avatar15987_7.gif) |
Contributing Member
Veteran HUBBer
|
|
Join Date: Jul 2005
Location: Wirral, England.
Posts: 5,666
|
|
Carbs regularly go on ebay for less than the price of a tube JB Weld !!
I wouldnt trust a chemical metal repair in a carb. One vibration too much and a bit comes unstuck and next minute its in your jet, breather or holding the float open..
__________________
Did some trips.
Rode some bikes.
Fix them for a living.
Can't say anymore.
|
![Old](https://www.horizonsunlimited.com/hubb/images/statusicon/post_old.gif)
1 Feb 2008
|
Registered Users
Veteran HUBBer
|
|
Join Date: Apr 2003
Location: Manchester UK
Posts: 235
|
|
Quote:
Originally Posted by SteveAttwood
|
Yep. Good stuff. Easier to use than brazing. About the same as silver-soldering. Dead cheap too.
|
![Old](https://www.horizonsunlimited.com/hubb/images/statusicon/post_old.gif)
1 Feb 2008
|
Registered Users
Veteran HUBBer
|
|
Join Date: Aug 2007
Location: Sax, Spain
Posts: 901
|
|
if you can get it, this is PETROL resistant
J-B Weld Company - J-B STIK Product Information
it kneads up like putty, made by same people as JB weld, ive used JB weld and its fantastic stuff.
Martyn
|
![Old](https://www.horizonsunlimited.com/hubb/images/statusicon/post_old.gif)
2 Feb 2008
|
Contributing Member
Veteran HUBBer
|
|
Join Date: Mar 2003
Location: London,England
Posts: 358
|
|
I have a set of carbs of a 3AJ they will need a very good clean but the bodies are good you could use your jets, float, needles etc. These carbs got left out in the rain at an auto jumble so really do need a good clean
£20 plus postage if you want, I am in North London
|
![Old](https://www.horizonsunlimited.com/hubb/images/statusicon/post_old.gif)
6 Feb 2008
|
Registered Users
Veteran HUBBer
|
|
Join Date: Feb 2002
Posts: 212
|
|
Thanks for all the advice
All,
Thanks for your suggestions.
I probably should have said in my original post that I was at home in the UK, and the carb is off a friends SR500 (similat engine to XT500).
Grants idea of drilling a small hole and using safety wire is something I hadn't thought of and seems a good idea, but I will investigate the cost and availability of a second hand carb first.
As an aside, does oneone know how to de-restrict a power limited SR500, we have replaced the restricted inlet boot (between carb and cylinder head) and re-jetted the carb. Is there anything else?
Thanks
Mark
|
![Old](https://www.horizonsunlimited.com/hubb/images/statusicon/post_old.gif)
6 Feb 2008
|
![phoenix's Avatar](https://www.horizonsunlimited.com/hubb/images/avatars/Avatar113.gif) |
Gold Member
Veteran HUBBer
|
|
Join Date: Oct 2006
Location: London / Dublin
Posts: 339
|
|
Don't forget to ensure when doing the carb repair (if you do it) that the float still moves freely, and can't move out of place, thus causing the valve to stick open or closed, causing overflow or fuel starvation respectively. Check the float height while you're at it (the manual should have the procedure and the setting, if u don't already know it).. all the fiddling around can easily change the setting.
Re de-restriction, check the float height too, and the idle speed adjustment.. if you've re-jetted it correctly, there *should* be very little else to do.
|
Currently Active Users Viewing This Thread: 1 (0 Registered Users and/or Members and 1 guests)
|
|
Posting Rules
|
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
HTML code is Off
|
|
|
|
Check the RAW segments; Grant, your HU host is on every month!
Episodes below to listen to while you, err, pretend to do something or other...
2020 Edition of Chris Scott's Adventure Motorcycling Handbook.
"Ultimate global guide for red-blooded bikers planning overseas exploration. Covers choice & preparation of best bike, shipping overseas, baggage design, riding techniques, travel health, visas, documentation, safety and useful addresses." Recommended. (Grant)
![Ripcord Rescue Travel Insurance.](/stuff/ripcord/ripcord-logo-250.jpg)
Ripcord Rescue Travel Insurance™ combines into a single integrated program the best evacuation and rescue with the premier travel insurance coverages designed for adventurers.
Led by special operations veterans, Stanford Medicine affiliated physicians, paramedics and other travel experts, Ripcord is perfect for adventure seekers, climbers, skiers, sports enthusiasts, hunters, international travelers, humanitarian efforts, expeditions and more.
Ripcord travel protection is now available for ALL nationalities, and travel is covered on motorcycles of all sizes!
What others say about HU...
"This site is the BIBLE for international bike travelers." Greg, Australia
"Thank you! The web site, The travels, The insight, The inspiration, Everything, just thanks." Colin, UK
"My friend and I are planning a trip from Singapore to England... We found (the HU) site invaluable as an aid to planning and have based a lot of our purchases (bikes, riding gear, etc.) on what we have learned from this site." Phil, Australia
"I for one always had an adventurous spirit, but you and Susan lit the fire for my trip and I'll be forever grateful for what you two do to inspire others to just do it." Brent, USA
"Your website is a mecca of valuable information and the (video) series is informative, entertaining, and inspiring!" Jennifer, Canada
"Your worldwide organisation and events are the Go To places to for all serious touring and aspiring touring bikers." Trevor, South Africa
"This is the answer to all my questions." Haydn, Australia
"Keep going the excellent work you are doing for Horizons Unlimited - I love it!" Thomas, Germany
Lots more comments here!
![Five books by Graham Field!](/stuff/grahamfield/graham-field-2021-280.jpg)
Diaries of a compulsive traveller
by Graham Field
Book, eBook, Audiobook
"A compelling, honest, inspiring and entertaining writing style with a built-in feel-good factor" Get them NOW from the authors' website and Amazon.com, Amazon.ca, Amazon.co.uk.
Back Road Map Books and Backroad GPS Maps for all of Canada - a must have!
New to Horizons Unlimited?
New to motorcycle travelling? New to the HU site? Confused? Too many options? It's really very simple - just 4 easy steps!
Horizons Unlimited was founded in 1997 by Grant and Susan Johnson following their journey around the world on a BMW R80G/S.
Read more about Grant & Susan's story
Membership - help keep us going!
Horizons Unlimited is not a big multi-national company, just two people who love motorcycle travel and have grown what started as a hobby in 1997 into a full time job (usually 8-10 hours per day and 7 days a week) and a labour of love. To keep it going and a roof over our heads, we run events all over the world with the help of volunteers; we sell inspirational and informative DVDs; we have a few selected advertisers; and we make a small amount from memberships.
You don't have to be a Member to come to an HU meeting, access the website, or ask questions on the HUBB. What you get for your membership contribution is our sincere gratitude, good karma and knowing that you're helping to keep the motorcycle travel dream alive. Contributing Members and Gold Members do get additional features on the HUBB. Here's a list of all the Member benefits on the HUBB.
|
|
|