www.b50.org

beat

Well, it dos not look to bad to me.
Others find Fish and Crabs in there and they still run.

some cleaning, some small parts and some glue - and there it will go

beat

beat

beat

using a knife as a scrapper.
working carefully, - should go.

beat

beat

minetymenace wrote: ↑
Wed Jul 01, 2020 9:27 am
.maybe then will I get the beast finished!

maybeeeeee,- ore better make it 3 times.....

beat

Grouty wrote: ↑
Tue Jun 30, 2020 10:36 am
Happy Birthday Gerry :-)

go to make a other 60 please...

beat

beat

mine cames off very easy.

beat

beat

minetymenace wrote: ↑
Wed Jun 17, 2020 8:07 am
....and I will make the breathing like this............................?

you will make the breathing à la B50 on a B25 ?
why the hell this ??

was on the 3rd today:

: the plan...

: the bushing...

: in place . ( press fit in the case )

guess I will make three points of welding to keep it safely in place.

beat

beat

well, so I will go the route of a 3. bearing, - not because it need it, - no, - just because I will to calm down my self and all others.... :lol: Bildschirmfoto 2020-06-16 um 22.54.09.png outer diameter by 47 only to allow me for make a special nicely centred bushing. the bad side on it: no sealring...

beat

Ian Hingley wrote: ↑
Sun Jun 14, 2020 10:32 pm
convert B25 crankcases to the 3-bearing B50 style.

hallo Ian,
it is not the question of doing it, - no, - it is the question of - dos it need it ??

what problem is coming up the way by using only 2 bearings as per B25 style

beat

beat

koncretekid wrote: ↑
Mon Jun 08, 2020 2:33 am
you won't have the third main bearing unless you plant

: 3rd bearing planing....

I am not sure as it really need it, - the 3rd one.

has anione experiance with this ? seen any brocken shafts ore cases ?

beat

beat

some work ( plaisir ) ahead....

beat

Hmmmm

needs a bit a clean I guess....

beat

beat

koncretekid wrote: ↑
Mon Jun 08, 2020 9:26 pm
4-1/2" with a 30 degree rake angle.

interresting.
I go for 27 ° angle, it makes it evan a bit more " quickly reacting"

crankbuster wrote: ↑
Tue Jun 09, 2020 6:00 pm
a thread that would print and be functional,

congratulating !

beat

beat

how do your get your cases so clean? truely minety, - I have no idea because I bought the cases clean like this. it is the British bike Doctor Hans Hartmann in Dottikon, he cleans up the parts so nicely. -- I will ask him about the method he is using.... old junk motor you're taking out, hi Tom, if...

beat

I also have to thank beat for sharing insight into sidecar steering. no problem with this, no secrets on BSA's. IMO, this is what this beautiful forum is for.... beat :mrgreen: BTW, Tom, - what is the " Nachlauf " Trail on your fast record fraim ? it must be huge, because no bends to go, - just fas...

beat

[/quote] 465cc ? hi tom, Bore 92 mm, Stroke 102 mm, makes 678 ccm if I am right. ( I call it the 680 :cool: :cool: ) beside of a " hot cam ", bigger Valves and a 36mm Flatslide Mikuni carb I will go the route of changing rocker ratio plus somewhere 10.5 comp ratio. the target for this bike is, to bu...

beat

Does your new front suspension on your sidecar rig have negative trail? hi Tom, this is a question I been asked very often. the answer is simply : it has zero, nill, just right up point to point. this in the suspension position of " full back ", - no free slap seted up. I know a few riders they pre...

beat

: got a case, a 92 bore barrel and a Wössner piston

dos anione know what year of manufacturing it says ??

: drilling the holes to 10.5 mm as first

: widen the case for the oversize cylinder...

: do the black print job...

: got it...

beat

beat

FGF wrote: ↑
Thu Jun 04, 2020 11:08 am
with what kind of welding ?

if welding, use TIG for this small point.

beat

+ 1

beat

FGF wrote: ↑
Sat May 30, 2020 9:31 am
was sold in south africa in 1971.
in this country BSA sold it 's bikes with speedometer in miles ?

yeas, I think so.

FGF wrote: ↑
Thu Jun 04, 2020 10:59 am
Looking for a new conrod

the original conrod do not have a good name,- means, - some of them break with no " excuse moi "

PES ore other new types are the way....

beat

beat

minety, - your headshop is making more headache than horsepowers

skippy wrote: ↑
Wed Jun 03, 2020 12:35 am
Your not worried it's going to go to fast for you.

not sure about this......

beat

: first welding...

: then porting...

: then polishing

: Inlet is 36 mm now

: Outlet is 39mm now

: Head is going now to a " Headshop "

beat

Hi bear brothers

it is time for something new.
Started with the head:

: smal mod.

: stud wide not enough..

: new 70 mm stud distance..

: new flanche..

: the welder comes in action soon..

beat

I am using the Boost Products silicone hoses. good stuff, many different sizes

: 45° angle, reducer hose

beat

beat

Ian Hingley wrote: ↑
Sun May 24, 2020 3:50 pm
definitely an improvement

beat

Momus wrote: ↑
Sat May 23, 2020 1:22 pm
high ratio rockers,

was'nt it Stan doing something the like ? but I can't find it...

beat

It's sometimes said it is best to get the opinions of 3 Drs. before operating. :lol: :lol: :laugh :laugh :lol: :lol: well, my Doc has the 102 on the shelf, with 92 nikasil barrel and Wössner piston, plus modified B25 cases as well..... I have seen those 678 ccm bikes running. <216 <201 <201 <201 <2...

beat

minetymenace wrote: ↑
Thu May 21, 2020 8:25 pm
finish my bike shed......

Whowwwww

I ask myself: what dos the hanging Sign sais ?

"" beware of the Beast ""

beat

beat

Momus wrote: ↑
Wed May 20, 2020 8:08 am
it looks like 110 mm is feasible

spoke with the doctor today: 102 mm is the max he will go, gives 678 ccm. if I am right.
all this should go in to a B25 case,,,,,,,,,,

beat

Did you make new mainshafts or reuse for your long crank? Got the parts for the crank from ABSAF, mainshafts are made for metric bearings. crank balanced for the Wössner piston here in my country at Gerhard racing in Frauenfeld. is that piston from Dottikon ? yes shocker, it is from the British bik...

beat

beat

making more way in a front suspension:

: cut the headstock

: reweld headstock

: cut fork

: prolong fork

: all back in place !

suspension plus 75 mm, total now 230 mm

beat

yes, the barrel for the Goldie with 90mm bore has encapsulated studs, so no way to set the spanner on them at the zylinder base as commonly. means, long screws from the head top down to this case inserts. DSCN1638.jpeg DSCN1649.jpeg DSCN1633.jpeg Details are to see in the Topic " Off Topic " section...

beat

can not check it for Numbers on it because it is inside the engine now, sorry.
the con rod ( it is steel ) is from ABSAF in the Nederlands, - no idea if there existing taller ones ?

what piston to liner clearance are you running ?

mine has 0.10 mm, so it is 89.90 size. ( 90.00 Bore )

beat

thanks moms, that I know it from my Goldie

: on my Goldie

: seams to be good stuff

beat

beat

I am happy to not evan know what facebook is ! on the other hand, I know what ladders are, so I keep away if possible,- in opposite to the B50 ! BTW, the starter circuit on a carburettor: It is made with a FIX JET, - but the temperature it has to serve is very variable! may go from minus 20° C to pl...

beat

: Fork welded and treating with acid now

: everything back in place now...

and the result is: 230 mm way in the front suspension in state of 185 mm it was before .

...can't await the end of this lurgy

beat

Momus wrote: ↑
Fri May 15, 2020 4:33 pm
Long rod/short deck 92 mm piston

brand ??

beat

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