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Old 08-30-2012, 01:13 AM   #1
poz960 OP
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Location: Toscana Italia
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Build a replica BMW HPN

Hello everyone, I'm new to the forum although I read a long time, I'm Italian and I write from Italy I hope you understand my bad English helped by a translator.
I do not know if this is the room to show my project, if it is not please move it to the moderators.
In the past I've built a couple of Special-based motorcycles BMW and I also restored two r 80 g / s, I state that it is not my job to be a restoration but I have good manual dexterity and then I like to do these things.
A couple of years ago I tried to contact HPN in Germany to make the frame and buy the accessories needed to build my dela Special Bmw but it was like trying to talk to the Martians and then as a bit of experience I have gained I am done my reply from just looking for parts and accessories on the web, the technical parts I made do as welds by an expert, the engine completely overhauled by BMW mechanic, the rest of elbow grease and many hours spent in the workshop around the bike .

This basis of the motorcycle,



These changes made































This is the final result









I do not want to fill the post of photographs, those who want to see the report of the building can see it here:

https://picasaweb.google.com/1037528...pnGastonRahier

Sorry if specifically my job better but are not very good at writing, I get along better with the work.
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Old 08-31-2012, 01:17 AM   #2
freestate
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That is one amazing build mate. Wish I had your skills and I'd do one myself.
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Old 08-31-2012, 04:59 AM   #3
gsd4me
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Excellent build job, hard to believe it started as a twin shock R65.
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Old 08-31-2012, 03:20 PM   #4
Clay Spinner
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Looks nice... did you do anything to the motor?
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Old 08-31-2012, 03:28 PM   #5
tdrrally
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it looks like the g/s rear sub frame is higher than the stock bike.

by how much is it higher??
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Old 08-31-2012, 07:26 PM   #6
Biebs
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Question Nice build

People need to go to link provided to see more pictures!!!


What did you use for front forks / front end???


Very NICE job!!!!!!!
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Old 08-31-2012, 08:55 PM   #7
Tanami
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Wow, nice work. Hope it brings you miles and miles of big smiles and silly grins.

Ride on...
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Old 09-01-2012, 10:54 AM   #8
poz960 OP
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Quote:
Originally Posted by Biebs View Post
People need to go to link provided to see more pictures!!!


What did you use for front forks / front end???


Very NICE job!!!!!!!


Many thanks to all
Yes, to see many phases of the work done you have to go on an external link.

Front forks are Marzocchi Magnum with 50 mm mounted on plates Ktm modified

The bike is about 92 cm high.

The engine has not been done at all, is a 800cq a RT

If anyone remembers, the first motorcycles built by HPN were all on a road.

I did before these other 2 special, here on this link you can see pictures:


Reply HPN Rally
https://picasaweb.google.com/1037528...136987/Special

R 80 G / S changed
https://picasaweb.google.com/1037528...7/SpecialR80GS #
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Old 09-02-2012, 12:00 PM   #9
adventure950
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Really nice job also love your rally bike in white- while your on could you let me know what rear spring ratio / size you are using - on mine I am using a 272 (Long) / 45 kg inch I have also tried other spring ratios but am struggling to get the optimum spring ratio for the twin shock set up. (see hpn paris dakar replica thread by me) I used Wilbers specific built shocks for the job and they are pretty near but get quite firm as they progress in compression)
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Old 09-02-2012, 02:58 PM   #10
poz960 OP
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Quote:
Originally Posted by adventure950 View Post
Really nice job also love your rally bike in white- while your on could you let me know what rear spring ratio / size you are using - on mine I am using a 272 (Long) / 45 kg inch I have also tried other spring ratios but am struggling to get the optimum spring ratio for the twin shock set up. (see hpn paris dakar replica thread by me) I used Wilbers specific built shocks for the job and they are pretty near but get quite firm as they progress in compression)
https://picasaweb.google.com/1037528...31921761798994
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Old 09-02-2012, 04:40 PM   #11
R-dubb
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Nice thread! I enjoyed seeing the before and after pics. Nice work. Thanks for posting.
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Old 09-03-2012, 12:25 PM   #12
adventure950
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POZ 960 I see you used a starter spring and main spring on each shock, they also have the spring weight on the spring but I can not make them out in the photo are you able to let me know what the actual figures on the springs say ie the black numbers on each spring (maybe 240/ 50 or 235/ 40 etc) thanks Jake.
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Old 09-03-2012, 10:40 PM   #13
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Originally Posted by poz960 View Post

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Old 09-04-2012, 01:27 PM   #14
poz960 OP
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Quote:
Originally Posted by adventure950 View Post
POZ 960 I see you used a starter spring and main spring on each shock, they also have the spring weight on the spring but I can not make them out in the photo are you able to let me know what the actual figures on the springs say ie the black numbers on each spring (maybe 240/ 50 or 235/ 40 etc) thanks Jake.
you understand, the rear shocks are these, found clearly used. unfortunately I do not remember the technical data . but if you are looking for HPN sells them. http://www.hpn.de/english/english.html
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Old 09-04-2012, 02:48 PM   #15
adventure950
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Thanks very much - your machines are really nice copies I speak to Klaus at HPN so will ask him about spring rates Thanks.

Quote:
Originally Posted by poz960 View Post
you understand, the rear shocks are these, found clearly used. unfortunately I do not remember the technical data . but if you are looking for HPN sells them. http://www.hpn.de/english/english.html
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