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Message started by Halvor on 08/17/13 at 10:42:53

Title: Virago??
Post by Halvor on 08/17/13 at 10:42:53

My second bike. Just finished my virago racer.

Title: Re: Virago??
Post by WD on 08/17/13 at 10:51:23

Nice job! Which flavor of Virago is it?

Title: Re: Virago??
Post by Serowbot on 08/17/13 at 10:58:49

:o :o :o!!...

:-* :-* :-*...

8-)...

Title: Re: Virago??
Post by Halvor on 08/17/13 at 11:11:53

Thank you! It is a TR1 -1000. It is equal to the 920, but the tr1 have chain. I welded the frame, exhaust, etc. of stainless. I am currently working on jetting. Will place baffles to increace back preassure and prevent baybies from crying. :)

Heres a video of the first start up, with me as the star. ;D
http://vimeo.com/72096232

Title: Re: Virago??
Post by LANCER on 08/17/13 at 11:19:32

Dude, very freaking cool ! ! ! ;) 8-)

Title: Re: Virago??
Post by Halvor on 08/17/13 at 11:27:43

Thank you Lancer. Did you see the movie?

Title: Re: Virago??
Post by kimchris1 on 08/17/13 at 11:41:15

Very nice Halvor.. You should be proud of yourself.
I really like what you did.. Great job..:) kim

Title: Re: Virago??
Post by justin_o_guy2 on 08/17/13 at 12:30:19

Looks like a chain stretchin, tire eatin son of a gun,,

Title: Re: Virago??
Post by paulmarshall on 08/17/13 at 12:45:17

Congrats on a great job. ;)

Title: Re: Virago??
Post by Halvor on 08/17/13 at 12:58:52

Thanks a lot to all of you. Nice feedback. I hav read about classic racer build with 100 hp on the wheel, but I do not know? I might try with mikuni. Its hitachi carbs on the old Viragos 81-83 - THoswe models are the best suited for cafe style becauce of 18 back wheel and mono damper. Heres one more movie with some details. I have used AISI 316 Bends and tubes for the parts.
http://vimeo.com/72556388

Title: Re: Virago??
Post by justin_o_guy2 on 08/17/13 at 14:54:17

Did you do all the welding we saw under the seat? If so, be forewarned,, I hate you..:)

Were you humming to try to keep from grunting & groaning getting up & down? If I woulda done that, there woulda been a lot more background noise,,

Title: Re: Virago??
Post by gizzo on 08/17/13 at 15:38:16

Nice work, man. 8-)

Title: Re: Virago??
Post by Halvor on 08/17/13 at 23:09:44

Thanks a lot. Sorry for all the humming. ;D Yes I have done most of the welding myself. However, my friend did the excellent weld under the seat. It is fun and easy to weld in stainless. I find it much easyer than black steel. THe secret is to use as much current you dare and let it flow. Like a paint job. Welding tubes is best downhill, and between 13 and 15 "on the clock". -Lower chance for making holes. It is important to stop when the conditions gets to hot to prevent collapse/holes. I seldom use recommended current, unless I have big holes or big gaps i want to close. Or very thin material.

Title: Re: Virago??
Post by Midnightrider on 08/18/13 at 01:54:46

That's real talent. You could do that for a living!

Title: Re: Virago??
Post by engineer on 08/18/13 at 06:09:42

Nice work. That tank looks great on there, what kind of tank is it?

Title: Re: Virago??
Post by Halvor on 08/18/13 at 08:48:24

Thanks a lot again! The tank is a Benelli mojave 360 tank reprodution from india. It was a lot of work with it becauce it was a raw steel tank. A lot of cafe racers use this tank. I had a long process with electrolysis to remove rust, then I had a round with different chemicals and a sealer in the end. Big fun. Electrolysis is very simle and looks like magic! I guess it will fit on the Savage to. It has a very wide tunell. I made a bracket to fix it to the original fram mounts. At the rear I made a special connection with a pin. see photo:

Title: Re: Virago??
Post by Halvor on 08/18/13 at 08:51:41

More photoes, drying out the sealer in the tank took two weeks. I used å fan and a vacum cleaner tube.

Title: Re: Virago??
Post by Halvor on 08/18/13 at 08:54:57

Self made headlight mount. Very easy made with a tube and a sheet metal. 3 holes an just veld on nuts on the other side. I used the "closed end nut" I was very happy with this weld. I used 2mm pin with the current for a 2,5 mm pin (80A) and welded "downhill". 2 mm stainless aisi 316 material. THe metal floated out and evrything ended up smooth. It is a bicycle rubber tube between the fork and the self made headlight mount.

Title: Re: Virago??
Post by Halvor on 08/18/13 at 08:58:07

Home made tail light. fixed to the frame with two bolts. Plastic part bought from wrenchmonkees.

Title: Re: Virago??
Post by justin_o_guy2 on 08/18/13 at 08:58:46

You are a fine craftsman,,

Title: Re: Virago??
Post by Halvor on 08/18/13 at 08:59:03

Finding right position for the tail light. The old battery is now swapped with a tiny LI-ion 270CCA. At least 5 times lighter and much smaller.

Title: Re: Virago??
Post by verslagen1 on 08/18/13 at 09:04:37

6E474A504954260 wrote:

Thanks a lot again! The tank is a Benelli mojave 360 tank reprodution from india. It was a lot of work with it becauce it was a raw steel tank. A lot of cafe racers use this tank.

how much gas does it hold?

Title: Re: Virago??
Post by Halvor on 08/18/13 at 12:37:03

I am not sure. Never thought about it :D 10 liter maybee. ??

Title: Re: Virago??
Post by ToesNose on 08/18/13 at 15:08:21

That is a beautiful work of art, nicely done (takes his hat off to Halvor)

Title: Re: Virago??
Post by Halvor on 08/19/13 at 14:15:40

:) :) :) :) :) :) :) :)
Heres some photoes from electrolysis rust removal. Watch out. Hydrogen gas is produced. The electrolyt is natrium-carbonat. Be carful about other chemicals. Salt water will for excample produce the war gas "Clorid gas". I painted the tank black first but did not like it.

Title: Re: Virago??
Post by Halvor on 08/19/13 at 14:16:13

Title: Re: Virago??
Post by Halvor on 08/19/13 at 14:16:51

The different stages of corroded steel will behave in different ways. Copied from this link : http://www.landyzone.co.uk/lz/f38/rust-removal-using-electrolysis-63065.html

1.) The outer layer of red rust is the surface we see and consists primarily of a compound with the chemical formula Fe2O3 (nH2O), known as ferric oxide. This material takes up rather more volume than the metal it replaces and as a result it tends to flake away from the surface and if it occurs in mechanical devices, can seize up moving parts. The loss of this loose layer of rust represents a total loss of metal from the component which cannot be recovered.
2.) Underneath this outer layer of red rust may be found a harder, darker layer of material having an almost purple-grey appearance when freshly exposed. This layer is often in direct contact with the surface of the metal and is able to conduct electricity. It has the chemical formula Fe3O4 which is the same chemical composition as the mineral Magnetite and is therefore sometimes referred to as such, although it is more commonly referred to simply as 'Black Rust'. As this material occupies the same volume as the original iron, surface features on the metal can sometimes be preserved in it with little distortion and as it tends to remain strongly bonded to the underlying metal, is fairly resistant to becoming detached and subsequently flaking off.
As the reaction involved in producing rust is an electrochemical one, it follows that it should be possible to somehow reverse the process using electricity, and this is indeed the case. As long as the polarity is correct, with the subject matter connected as cathode, it is possible to chemically reduce some of the black rust back to metallic iron with a good bond to the original metal. During this process, much of the red rust is converted to Fe3O4 and becomes detached from the surface, aiding its removal when the conversion is complete.

Title: Re: Virago??
Post by Tony S on 08/19/13 at 21:35:54

Awesome!