www.b50.org

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yes, - wood everywhere.

Wood is my third hand and my fourth knee as usual on such a project

As next is the second welding session ahead...

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geting foreward tube by tube...

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this is where it should go...

hold in place for now with some welding dots .

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I did wonder if you were purging the tubes, it makes the welds so much stronger. Food grade frame? purging :smile: yes , - we call it " formieren ". purging the inside with the same gas as for the welder is used, the Argon. give it about 3 liter / minute to flow. but do not forget: Argon is heavier...

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welding the first botom rail tube with " gas inside tube " as well

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hi Francoise For what classic race do you hope to be ready in 2021 ? I don't think it will be ready for race in 2021. hopefully it will be on the wheels and completed for testruns by the end of this year. so, if everithing gos all right, it should be ready for 2022. our first race with the old Golds...

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working on the swing arm bearing brackets, - the ones will be welded in to the frame, - not the swing arm

: weld bushings for filament bearings

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frame tubing on the way DSCN2290.jpeg with silent blocks in place... DSCN2288.jpeg but now, I run out of Tubes 33.7 X 2 mm because the lurgy <215 Dummy shock absorber provisorily fit to see where the pipes should go DSCN2289.jpeg about the rear suspension: the Gold Star has a way for the rear wheel ...

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baz wrote: ↑Fri Feb 19, 2021 1:35 am There was a hell of a lot of fettling to get it to all fit together!

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hi FGF do not forget : this BSA engines are machined very UNEXACTLY in several places. so, - no wonder if a new part will not fit as it should, - just first check your own work you have done and if it is ok, --cut something off the part ! things like this are very common <069 <069 beat :lol:

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Are they used with seals or thrust bearings? sealing will be by AS 35X45X7 for the axial forces I have to brew something own.... <017 the Glycodur F's, - I can not reach it long enough as I like it and the filament wound bushings are more lightweight. :ban The infamous BSA unit single heavily offse...

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I can not reach it as easy because the lurgy has closed the border to D. hi minety D = G, - you are right. ( algebra was never my strongest... :lol: ) The front fame tube seems to split into the two bottom rails fairly high up, any reason for that? two reasons for this: 1. the engine is quite a lot...

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some joints looks like brass soldered to me. unusual in stainless I think. but if it is working, - why not ? ----------------------------------------------------- as the frame tubes to headstock are finally welded, doing next step frame tubes. ( unlucky I will run out of material soon ) I have to wa...

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yes FGF, new fraim on the way. DSCN2278.jpeg DSCN2279.jpeg DSCN2280.jpeg DSCN2281.jpeg for finaly welding the headstock I will use a Strong dummy ( 25 mm shaft ) for straight center line. but this " final welding " will be done later on. like this, NO machining of the headstock is needed after weldi...

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great looking bike and pictures

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IGUS bushings are nice I do not like IGUS bushings much, -- I go for the SKF PWM 354140 for the rear swing arm and the SKF PWM 202420 in the front fork swing arm. moron me, I vergot to order the ones for the sidecar swing arm SKF PWM 253030. <1001 Unusual choice of material for a heavily stressed s...

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lovely bike, lovely project

evan if the "afternoon " will be a bit a longer....

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Stainless is an interesting choice of material Yes :!: I have not seen a bike made in Stainless ever, --- before I made my own one! but Stainless is tricky, -- if you do not keep on to the rules it needs, -- the disaster is shurely given :???: DSCN2277.jpeg brainwork : where to go with the tubes to...

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suspension fully extended? if " extended " means : bike in most up position,: yes. for a example: engine high over ground now: 27 cm. minus the free slap of 10 to 15 mm, makes 25.5 cm ground clearance by the end. the material is SST V2A , this 1.4301 stuff. the finally welding of the front triangle...

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hi tom,

it will be not a Chopper

the hight of the headstock ( most highest point ) is 104 cm.
this because I go for a suspension way of more than 230 mm on this front wheel.

BTW, next step in the build:

: the DOM

: return oil inlet

: engine breathing Air inlet and outlet

: and pointweldet in place

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as everything in the right place:

coming to the head stock:

: again, - bearing NOT in the stock

: find a place for it....

: and a proper stand....

: a first fraim tube.....

: and a second one....

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well, - this is it:

: a Jig

: scratches needed according to the sheet

: starting with the rear wheel

: shifting and adjusting to the place it need

Tolerances for this positions: + / - 3 mm

: welding the steel fixating in place

coming to the engine as next:

: made the engine holders

: and on to the jig

: very important the chainline

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still a afternoon of work to doon it........

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nearly finished the carbi tuning today. DSCN2237.jpeg DSCN2238.jpeg DSCN2239.jpeg as I now know what I want..... Abmessungen 680er xlsx.zip and started something.... anyone imagin what it should :?: DSCN2240.jpeg :mrgreen: :mrgreen: :mrgreen: :mrgreen: :mrgreen: :mrgreen: :mrgreen: :mrgreen:

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minetymenace wrote: ↑Sun Jan 31, 2021 8:22 pm How did they get that bus to the top of the mountain?

they simply hooked it on to the rope

as to see.....
.....and you can keep on sitting in there whilst on the way up.....

-- we call it : cable bus

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FGF wrote: ↑Sat Jan 23, 2021 2:56 pm snowboard , do you mean this kind of practice ?

hi FGF

I mean this way of practice

BTW, this old pics from especial sides are great

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johnu wrote: ↑Sat Jan 23, 2021 3:30 am Very nice woek Frank!

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I keep them dry. I am to miserly to use the expensive loctite...

unknown

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witch clutch are you running ? it is a NEB clutch and gearbox. it looks good to me so far, - a bit similar to the one I use now on the Goldie. but Goldie has a dry type , - B50 has the wet type. We have moved to somewhere with a more suitable garage now if you want to call again.. yes Jan, - I woul...

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thank you guys I put the engine on to the balance to see the wight: 36.1 Kg this as seen on the pictures, - means with carburettor, kickstarter and gearshift lever plus trigger ( points ) for the ignition. :cool: :cool: at the other side of the balance it stays 9'800 Sfr.- for the engine parts. <022...

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engine completed:

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Hmmmmmmm

dos he know what for the third wheel is

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This topic is very close to being a "What is the best oil?" topic....very very close......if it starts to head that way you know what will happen! <201 <201 :shock: :shock: :?: :?: will it happen the same as with the Topic : " What is the best cider " , --- ore " What is the best beer " :?: :?: <20...

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hi FGF

what size is the inlet on your zyl head ?

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hi beezer

I di'd it my way:
Topic: ARV mod. in Project bikes

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