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Old 12-05-2003, 03:21 PM   #1
Ricardo Kuhn OP
a.k.a. Mr Rico Suave
 
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take a look at this awesome AIRHEAD

I quess being popular have some advantages

I recibe a E-mail from Eric two days ago with one picture,,this One


he send me some moretoday and a simple explanation of what he did,,I love this thing,,,simple, Honest and for sure hand made

here are his comments,,

first E-mail
Quote:
Hello
Perhaps it would be of interest with a picture of my BMW R98GR. The design is perhaps not so good, but it runs good and is light (for a 980cc twin)with 320,5 lbs without fuel. Thanks for your site.
Erik Skruen Gjendem, Norway
Oviuslly this is one of those cases,that you need to be able to see true the Mud and the scratches


second comment
Quote:
The bike is built up by me, making everything myself. No expensive parts or materials, only lots of thinking , cutting,welding, turning, drilling and testing. And searching for the right parts..... The alternator for ex. comes from a racing Ducati, its light , flat and runs in oil. so then I could shorten the crank and make a new front on the engine.It is now 75mm shorter than the original Engine. The ignition had to move backwards to the clutch-housing. An aftermarked digital ignition for an old Ducati. With the shorter engine I could also shorten the frame in front (62mm) and make the steering angle 1 degree steeper. Now I could make the swingarm 100mm longer without to much wheelbase (1525mm) The long swingarm because I wanted more wheeltravel (now 290mm) and less cardanmomentum. The engine weights 121 lbs with gearbox, carbs and oil. That should be alittle bit less than the KTM 950 engine.... But I dont have 100hp, only 70-75hp,but lots of torque. Front fork comes from Husky, tank is an Acerbis tank for XR600, seat from XT350. All modified. Air filter box is made of alu-sheetmetal. Thats some of it, do you have some light parts? And what about the weber rallytwin? Thats a new thing for me. And thanks for the interest.Here are some more pics.
Nice big old carbs


I specially like this detail of the pipes going on the inside,can you say much more clearance


final photo,,not much to see,but i guess that is exaclly the idea,Skinny,light,and almost nothing


when people tell me"I'm building my bike" this is what I ear,,I like It......
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Old 12-05-2003, 03:44 PM   #2
jimjib
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very, very nice
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Old 12-05-2003, 03:46 PM   #3
Jean-Luc
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AMAZING!

This guy could teach a thing or 2 on how to be pragmatic and efficient to a lot of motorcycles vendors
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Old 12-05-2003, 04:05 PM   #4
Ricardo Kuhn OP
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Re: AMAZING!

Quote:
Said Jean-Luc:
This guy could teach a thing or 2 on how to be pragmatic and efficient to a lot of motorcycles vendors
agree a 100 %

No Bling Bling on ADVenture bikes...

did you see the motor "Tilt" so the angle of the final drive swing arm is not that abrupt(this is a typical mod,on mono lever bikes)

love the simplisity and sturdiness of the whole thing
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Old 12-05-2003, 04:25 PM   #5
nomiles
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Thumb All right!

Well done, Erik!

Thanks for posting it, Ricardo.
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Old 12-05-2003, 04:36 PM   #6
Randy
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DAMN!

Now, that's an airhead!
I wish i had the time, tools and talent to build something like that. with maybe a little less suspension (seat height), some slightly more road oriented DS tires, a good seat (maybe that ones not bad) and some aluminum cases that would be my idea of an adventure bike. what i wish the R80 had been.


Ricky,

Would you happen to have a higher resolution version of the first pic that you could email me? i would like to print and frame that one for my garage.
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Old 12-05-2003, 08:07 PM   #7
Rubber Cow
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NIIIIIIIICE!

Man that is a cool bike. Very creative.
That's great inspiration for me to get off my ass and rebuild the R80 that I have in pieces in the basement. But that deal where he has eliminated the electric starter worries me. BMW kick starters are pieces of crap intended for emergency use only. I wonder if he beefed up the tranny to handle it?
Cheers,
Jorge
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Old 12-05-2003, 08:48 PM   #8
Mack
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Very Nice! He has done a bang up job of getting it down to the essentials.
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Old 12-06-2003, 12:25 AM   #9
Ricardo Kuhn OP
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Quote:
Said Randy:
DAMN!

Ricky,

Would you happen to have a higher resolution version of the first pic that you could email me? i would like to print and frame that one for my garage.
sorry i don't but hopefully he will suscribe and post more and BETTER pictures,plus explain all the stuff.
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Old 12-06-2003, 07:13 AM   #10
Randy
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that's ok. i printed out the one you posted and it came out ok as an 8X10". yeah i hope he signs up, i'd like to see and read about more details.

anyone have a good source for other interesting pics of bikes? i kinda collect pics of bikes that are cool, different, beautiful ar just catch my eye for what ever reason. i print out the better ones for my garage. got lots of wall space left:): .
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Old 12-06-2003, 09:02 AM   #11
vrago
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R80GS Basics

Where the heck are all of the R80GS Basics that were sold until 98 or 99? South Africa?

Anyone know of late model R80GS's ?

I have thought often about doing a distillation of one into a light weight "essential package"

I'm not likely to do as many monster mods as Eric, but think it wopuild be an awesome project.
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Old 12-07-2003, 02:03 PM   #12
erik gjendem
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Specificatons

Here are some specificatons:

R100 engine /7motorblock,chopped
Oilpan of 5mm alusheetmet.
Ducati Racing alternator
Silent Hektik Ignition(for Ducati)on flywheel
Mikuni TM40 carbs
Airbox under seat
40x1mm exhaust,stainless,
5 gear tranny,longer 5.gear
hydraulic clutch
clutch pressure plate from K75
monolever swingarm made 100mm longer
frame R75/5,-72model,shortened 62mm in front, 1degree steeper steering head and made stronger at 5 points
rear frame of crmo-steel and welded to main frame
front fork from -94 husky
Rear damper from WP
Wheels 21 and 18 "
wheel travel front 280mm,rear 290mm
Seat height 920mm
wheelbase 1525mm
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Old 12-07-2003, 02:10 PM   #13
Ricardo Kuhn OP
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Erik i'm really glad you are here

as you can see many people love you bike..

if you have any more pictures send them to me and I post them for you on my gallerys..

please keep telling us about the process and the reasons why you did what you did..

you are a inspiration to us all..
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Old 12-07-2003, 02:22 PM   #14
vrago
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not an airhead, but pretty cool

the HPN bikes are pretty cool examples of what can be done. this one is an oilhead derived version, see the rest of the site to check out previous airhead derivatives.

http://www.hpn.de/bilder/high_resolution/gsrr2.jpg
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Old 12-07-2003, 02:33 PM   #15
Ricardo Kuhn OP
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Re: not an airhead, but pretty cool

Quote:
Said vrago:
the HPN bikes are pretty cool examples of what can be done. this one is an oilhead derived version, see the rest of the site to check out previous airhead derivatives.

http://www.hpn.de/bilder/high_resolution/gsrr2.jpg
you see Vince,,yeah does bikes are great,but the are all made for people with a lot of money,that don't want ,or don't know how to work on their on bike.

I think erik bike deserves a lot more merit,,okay maybe not technical but in the passion department is for sure far ahead.

let try to keep this about hand made bikes BY their owners and not the $40,000 (if not much more money) "Thophy girl's"

the weber twins comes to mind,,my little golem(in a chessy~wiss kind of way) and a few more but not that many
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