Grant demystifies the black art of Tire Changing and Repair to help you STAY on the road! "Very informative and practical." See the trailer 
Cotton or synth sweat-wicking t-shirts with the Horizons Unlimited logo on the front and a snappy slogan (changing every year) on the back.
Show your route on your panniers. Great conversation starter when you meet people on the road!
Motorcycle and travel books to inspire and inform you!
ll 5 DVDs with a custom printed slip case. "The series is 'free' because the tips and advice will save much more than you spend on buying the DVD's."
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| 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. |
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#1
14 May 2002
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Frame mods, ala HPN
Hi all, I have a 1986 G/S and am going to have the frame reinforced by a local welder. I was thinking of having him copy some of the frame reinforcements HPN makes, without going to the extent of creating a center shock conversion. Does anyone have some good pics of the HPN reinforcements? Any other ideas? They guy I found welds just about everything, he’s done work for NASA and Ballard, I saw his stuff and had him do a small repair on my RT. I was even thinking of having him build a titanium rear sub frame, but I have no clue what the cost and other potential downsides would be. Any ideas welcome.
Kevin ------------------ Kevin http://www.nohorizons.net
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http://www.nohorizons.net 
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#2
15 May 2002
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http://www.hpn.de/english/english.html
If you haven't already looked at it, is the photo of off HPN's site. There are a few people on the web (mostly through Mica peak's web loop) that have old HPN race bikes or have paid for the modifications; you could likely find some better photos there. I braced my frame myself, and found it easy and effective. The main areas of weakness are in the rear subframe, extra struts from the rear footpeg mounts to the rear of the frame help the most. I also welded gussets into the front frame, tying in the frame tubes around the steering head more tightly. I think you really need to answer the question of: Do you want an off-road racing machine, or a travel bike? The HPN modifications are nice, but have you looked at the seat hight? One of the modifications that they do that makes lots of sense to me is the lengthened rear swingarm, which gives more suspension travel. I think Grant's advise on using mild steel for frame and rack material is wise - easy to work with, ductial, and easy to repair. You gain a few pounds over more exotic material, but for a heavily loaded overland bike, this is not the best place to save weight.
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