Go Back   Horizons Unlimited - The HUBB > Technical, Bike forums > BMW Tech
tyre clamp (rim lock, security bolt, etc.) tyre clamp (rim lock, security bolt, etc.)
Register FAQ Calendar Today's Posts
BMW Tech BMW Tech Forum - For Questions specific and of interest to BMW riders only.
Photo by Hendi Kaf, in Cambodia

I haven't been everywhere...
but it's on my list!


Photo by Hendi Kaf,
in Cambodia



Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 26 Mar 2007
Registered Users
HUBB regular
  
Join Date: Mar 2007
Location: UK
Posts: 27
tyre clamp (rim lock, security bolt, etc.)
Hello all,
First of all let me apologise if you've read this before - I've posted the same question in lots of places, so far without any luck.
I'm trying to find a tyre clamp (or rim lock, etc.) to fit to the rear wheel of my F650GS Dakar. The wheel is 3.00x17 and the widest clamp I've found so far is to fit a 2.50 wheel.
I realise I might be better off changing the whole wheel for something like a 2.50x18 but I'm trying to avoid that expense for the time being.
Does anyone have any suggestions where I might find a suitable clamp? I was hoping that I'd find one off one of the larger GSes but no luck as yet. I'm in the UK but if one can be found elsewhere then I'd definitely consider shipping it here.
Any suggestions or advice would be appreciated,
Doug.
Reply With Quote
  #2  
Old 26 Mar 2007
Registered Users
Veteran HUBBer
  
Join Date: Feb 2006
Posts: 1,598
You might get what you want in a store that does old bikes. virtually all old Brit bikes were fitted with a 'security' bolt on their rear tyres. Incidentally the Enfield uses a 3.50 section rear.
Reply With Quote
  #3  
Old 27 Mar 2007
Registered Users
Veteran HUBBer
  
Join Date: Jun 2005
Location: Cape Town / South Africa
Posts: 207
Why do you want to fit this?
I think the reason you don't get any replies is because almost no one uses them except the motocross guys, and therefore you will only find them in the sizes to fit motocross rims which is mostly 1.85, 2.15 and widest 2.50.
Tubeless tires can't be fitted with a rim lock for obvious reasons and therefore all modern tubeless tires, which you will also fit to your tube type rim, has a much tighter bead to prevent the rim from slipping in the tyre.
This is the reason why it is so hard to get the bead on and of the rim these days.
You will be safe as long as you always fit tubeless tires and I am sure even tube type tyres of the more modern type will not give you any problems.

It will be nice to here if some of you guys out there have ever had problems not fitting rim locks.
Reply With Quote
  #4  
Old 27 Mar 2007
Registered Users
Veteran HUBBer
  
Join Date: Apr 2003
Location: Cape Town, South Africa
Posts: 303
The rim lock will prevent your valve to get torn out of the tube if you have a puncture and the tire rotates on the rim before you stop.
You will also need a rim lock for very very soft sandy conditions if you run your tires virtually flat. Not practical on a bike like the Dakar as it is heavy and handles like a pig in soft sand and you will also either snake bite your tube or even worse ding your wheel if you hit a rock.
Tire changes with rim locks fitted are a pain to say the least.
Just forget about the rim lock and keep your tire pressures above 1 bar.
Reply With Quote
  #5  
Old 27 Mar 2007
Registered Users
HUBB regular
  
Join Date: Oct 2001
Location: Montreal,PQ,Canada
Posts: 20
chris scott's adventure book shows wood screws threw rim. Sun rims use studs mounted to inside rim.
Reply With Quote
  #6  
Old 28 Mar 2007
Registered Users
New on the HUBB
  
Join Date: Oct 2006
Location: Kent, UK
Posts: 16
Rim Locks
I ran into the same problem trying to find information on rim locks prior to my trip last year.

I ended up not bothering. I guess it depends on how much sand you are intending to do?

I did three days in Mauritania. No big dunes, but plenty of sand. I was a sand novice and it took a few spills to persuade myself to "pin the throttle"!

The Dakar is a heavy bike in the sand (and to pick up). But for info I had TKC80s with inner tubes and ran them at 18PSI with no tyre creep. Has anyone run them any lower?
__________________
Major Moto

BMW F650 GS Dakar

http://hitthegrit.blogspot.com/ One man, one bike. Africa 2006.
Reply With Quote
  #7  
Old 29 Mar 2007
Registered Users
HUBB regular
  
Join Date: Mar 2007
Location: UK
Posts: 27
I accept that the bike is not a motocrosser and it may not be capable of managing all terrain as easily as I'd like but I would like the option to run low pressures if I feel I need to. Several of the tyres I'm considering are, I believe, intended for tubed use so I wouldn't get any benefit from the tighter bead to rim joint. I believe the TKC80s are tubeless so I may have to run higher than 18psi to use others.
Basically I'm trying to get the bike robust and reliable. In previous greenlaning and rally experience I've seen tyres slipping on the rim enough to tear valves out; I had tyre clamps on my previous bike running at 18psi approx..
I have had a look at older bikes but haven't found one where the wheel (as opposed to the tyre) was 3.00 wide.
Screws threw the rim has been suggested and, loathe as I am to admit, I am considering it!
For the time being I'll stay in the 28psi region and see how I get on. Thanks for everyones suggestions.
Reply With Quote
  #8  
Old 29 Mar 2007
javkap's Avatar
Registered Users
Veteran HUBBer
  
Join Date: Mar 2003
Location: Buenos Aires - Argentina
Posts: 520
Some years a go I was on the same predicament, on my AT I have also 3.00 wide rim, but fortunately was easy to find 2.75 rim locks. I tested on the rim before to put all together and looks like enough to hold the tire. Also the ones I found says 2.75 on the plastic bag but 2.50-2.75-3.00 on the clamp. If I could find that in Argentina I’m sure you will there.


Javier…
DakarMotos
__________________
Javier...
Dakar Motos “ ”
Reply With Quote
Reply

« Previous Thread | Next Thread »

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

Similar Threads
Thread Thread Starter Forum Replies Last Post
Front Axle Clamp Bolt Torques? davidlomax BMW Tech 3 24 Jun 2005 07:06
1200s - Check your Final Drive Bolt ! paulwebac BMW Tech 0 8 May 2005 23:25
Security Alert - electronic banking in Internet cafes! Grant Johnson Travellers' Advisories, Safety and Security on the Road 2 19 Jul 2004 12:42
Security in Niger roro North Africa 2 11 Jun 2004 23:47

 
 

Announcements

Thinking about traveling? Not sure about the whole thing? Watch the HU Achievable Dream Video Trailers and then get ALL the information you need to get inspired and learn how to travel anywhere in the world!

Have YOU ever wondered who has ridden around the world? We did too - and now here's the list of Circumnavigators!
Check it out now, and add your information if we didn't find you.

Next HU Eventscalendar

25 years of HU Events
Be sure to join us for this huge milestone!

ALL Dates subject to change.

2025 Confirmed Events:

Virginia: April 24-27 2025
Queensland is back! May 2-4 2025
Germany Summer: May 29-June 1 2025
CanWest: July 10-13 2025
Switzerland: Date TBC
Ecuador: Date TBC
Romania: Date TBC
Austria: Sept. 11-14
California: September 18-21
France: September 19-21 2025
Germany Autumn: Oct 30-Nov 2 2025

Add yourself to the Updates List for each event!

Questions about an event? Ask here

See all event details

 
World's most listened to Adventure Motorbike Show!
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...

Adventurous Bikers – We've got all your Hygiene & Protection needs SORTED! Powdered Hair & Body Wash, Moisturising Cream Insect Repellent, and Moisturising Cream Sunscreen SPF50. ESSENTIAL | CONVENIENT | FUNCTIONAL.

2020 Edition of Chris Scott's Adventure Motorcycling Handbook.

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.

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!

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!

Your ad could be here, on EVERY page of the HUBB, or the whole website, or as many as you like!

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.

Susan and Grant Johnson 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.



All times are GMT +1. The time now is 16:50.

Contact Us - Horizons Unlimited Motorcycle Travellers Website - Archive - Privacy Statement - Top