Go Back   Horizons Unlimited - The HUBB > Technical, Bike forums > BMW Tech

BMW Tech BMW Tech Forum - For Questions specific and of interest to BMW riders only. Questions comparing which bike is best etc go in the "Which Bike" forum.
Contact Overland Solutions for all your custom modifications and setup for overland travel.

7 Litre Camel Tank Lets You Explore More, Click to Find out More!

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 6 Oct 2004
Registered Users
HUBB regular
 
Join Date: Apr 2004
Posts: 25
Riding in thick sand

Hi,
The problem with letting air out of the tyres for riding in thick sand is that the tyre beads often unseat and the rim can spin inside the tyre.
One fix I've heard of is to drill four holes in the rim, two each side, at 90 degrees to each other and then use a self-tapping screw to bite into the tyre. Anyone tried this?
What size screw should be used?
Finally, what's a good pressure to maintain in the tyres for sand riding?
Thanks
Paul
Reply With Quote
  #2  
Old 7 Oct 2004
Registered Users
New on the HUBB
 
Join Date: Oct 2004
Location: Melbourne Australia
Posts: 2
I have many years ago used self tapping metal screws with a flat cap to screw into the side of the rims and into the tyre. I remember using 6 per side whilst a friend used 3 per side. I don't think there was much difference, if any.

What you have to do is measure the thickness of your rim and also the thickness of your tyre bead and ensure that you don't go through to puncture the tube.

Another way out is to buy tyre rim fix. This is a product from Rema that helps to bond the tyre bead to the rim and in the case of badly fitting tubeless tyres helps to seal.

As for tyre pressures you have to compromise between traction and rim damage. If you are running a heavy bike, any flat twin BMW is a heavy bike, then you cannot go too low, especially on the front if you don't wish for damage in a pot hole. If there is only soft sand then you can really go quite low, especialy if you have the tyre attached to the rim as above.

Over the years I've worked out that the best overall touring pressure for my 1100GS is 2.1 Bar in the front and 2 Bar in the rear I run this pressure on paved roads and tracks to sandy tracks. I run this pressure in the TKC 80 tyres which are the knobby ones for that bike.

My R80 G/S was a little different and I ran lower pressure which was around the 1.7 Bar front and 1.5 bar in the rear. This was a tubed tyre bike and it ran well with those pressures on all surfaces.

For 16 years in between those two bikes I ran a BMW R100CS and mainly used road tyres. However when travelling on dirt or sandy tracks I ran 2 Bar front and 1.6 Bar rear this seemed to work quite well and the handling when back on a hard surface wasn't too bad. With this bike I ran straight road tyres almost all of the time. Although a few times I ran a Trials universal tyre on the front and a full knobby on the back. Unfortunately the weight of the bike did destroy the tyres if I went much over 120 Km/h so touring speed on a paved surface was close to 95 100 Km/h.

All of the above pressures were used when the bike was fully loaded and two up, you are not trying to race when touring and it really is relaxing when the bike handles reasonably well on poor roads and you are able to take in the views if they are there.

Mick.
Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 Registered Users and/or Members and 1 guests)
 
Thread Tools
Display Modes

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


 
 



Renedian Adventures

HU DVD Summer Special!

Now that summer is here, get On the Road! Take 30% off the Achievable Dream - On the Road! 2-DVD set until August 31 only. Get On the Road! Learn the tips to staying healthy, happy and secure on your motorcycle adventure!

Our veteran travellers share their tips (and great stories) for staying healthy, happy and secure on your motorcycle adventure.

"A fantastic, informative and inspirational DVD."

"It's brilliant - thank you very much!"

Check it out at the HU Store! Remember to use Coupon Code 'ONTHEROAD' on your order when you checkout.

What others say about HU...

"I just wanted to say thanks for doing this and sharing so much with the rest of us." Dave, USA

"Your website is a mecca of valuable information and the DVD series is informative, entertaining, and inspiring! The new look of the website is very impressive, updated and catchy. Thank you so very much!" Jennifer, Canada

"...Great site. Keep up the good work." Murray and Carmen, Australia

"We just finished a 7 month 22,000+ mile scouting trip from Alaska to the bottom of Chile and I can't tell you how many times we referred to your site for help. From how to adjust your valves, to where to stay in the back country of Peru. Horizons Unlimited was a key player in our success. Motorcycle enthusiasts from around the world are in debt to your services." Alaska Riders

contest pic

10th Annual HU Travellers Photo Contest is on now! This is an opportunity for YOU to show us your best photos and win prizes!

NEW! HU 2014 Adventure Travel T-shirts! are now available in several colors! Be the first kid on your block to have them! New lower prices on synths!

HU 2014 T-shirts now in!

Check out the new Gildan Performance cotton-feel t-shirt - 100% poly, feels like soft cotton!


What turns you on to motorcycle travel?


Global Rescue, WORLDwide evacuation services for EVERYONE

Global Rescue is the premier provider of medical, security and evacuation services worldwide and is the only company that will come to you, wherever you are, and evacuate you to your home hospital of choice. Additionally, Global Rescue places no restrictions on country of citizenship - all nationalities are eligible to sign-up!


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 R80 G/S motorcycle.

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 (22 this year!); 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, the HUBB or to receive the e-zine. 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.


Books & DVDs

amazon

All the best travel books and videos listed and often reviewed on HU's famous Books page. Check it out and get great travel books from all over the world.


Motorcycle Express for shipping and insurance!

Motorcycle Express

MC Air Shipping, (uncrated) USA / Canada / Europe and other areas. Be sure to say "Horizons Unlimited" to get your $25 discount on Shipping!
Insurance - see: For foreigners traveling in US and Canada and for Americans and Canadians traveling in other countries, then mail it to MC Express and get your HU $15 discount!




All times are GMT +1. The time now is 07:39.