Search found 128 matches

by FGF
Mon Jan 25, 2021 11:50 am
Forum: Project bikes
Topic: LOBE 2 20-21
Replies: 92
Views: 9287

Re: LOBE 2 20-21

Sincere apologies Beat for the picture.
I am really a great fan of your project .
I liked this picture which shows the side car cross pionneers in very difficult conditions.
I saw many races when i was younger and this bike discipline is always very hard .
Regards Francois
by FGF
Sat Jan 23, 2021 2:56 pm
Forum: Project bikes
Topic: LOBE 2 20-21
Replies: 92
Views: 9287

Re: LOBE 2 20-21

Hello Beat ,
When you tell us about your snowboard , do you mean this kind of practice ?

surf.jpg
by FGF
Fri Jan 22, 2021 7:20 pm
Forum: Tech
Topic: oil pump stud thread
Replies: 1
Views: 83

oil pump stud thread

Hello , The oil pump gasket is very thin near the drills . ( 1 mm on the right side ) It has to stay well tightened. oil_pump_e.jpg The nuts are locked , nylstop or else but the studs seem to be dry fitted at factory. Do you advise to tighten the three studs in the crankcase with Loctite or keep the...
by FGF
Mon Jan 18, 2021 10:53 am
Forum: Tech
Topic: woodruff keys
Replies: 8
Views: 346

Re: woodruff keys

Thanks a lot Mark and take care in England.
by FGF
Mon Jan 18, 2021 10:38 am
Forum: Project bikes
Topic: Little BSS cafe racer
Replies: 64
Views: 11597

Re: Little BSS cafe racer

I forgot Beat ,

Andrea DOVIZIOSO could try your side car when it 'll be ready , he 's free at the beginning of 2021 :

https://www.paddock-gp.com/motogp-video ... te-dessai/

The best developer for you !
by FGF
Mon Jan 18, 2021 10:21 am
Forum: Project bikes
Topic: Little BSS cafe racer
Replies: 64
Views: 11597

Re: Little BSS cafe racer

Hello Beat ,

Just a 34 mm bore with original valves , it 'll be a little B50SS cafe racer ...
Not a side car cross SINGLE MONSTER ! ....I'd like to hear it's deep sound

a few weeks on you tube ?
by FGF
Sun Jan 17, 2021 11:26 am
Forum: Project bikes
Topic: Little BSS cafe racer
Replies: 64
Views: 11597

Re: Little BSS cafe racer

Little garage cold this season ...
Engine inside the desk , near the heater and the computer :

heating.jpg
hardening the Loctite ...
by FGF
Sat Jan 16, 2021 3:34 pm
Forum: Tech
Topic: woodruff keys
Replies: 8
Views: 346

Re: woodruff keys

Thanks for all . i 'd prefer to be careful with the clutch , taper with key . For the timing pinion ( 70-1580 ) , i 'm ready to use a file if the '' 5.08 mm'' is the right value. If the pinion is fitted with a too hight key , the dismounting will be hot ... Has someone the real hight dimension to ve...
by FGF
Fri Jan 15, 2021 6:27 pm
Forum: Tech
Topic: woodruff keys
Replies: 8
Views: 346

Re: woodruff keys

Thanks Gerry , The timing gear is lightly press fitted , so if the woodruff key is too high the gear could be blocked out . there is a gap between the key and the gear which must be respected ... So, i wouldn't like to fit a too high key ...5.08 mm '' maxi '' and i 'm not so skilled than '' BEAT '' ...
by FGF
Fri Jan 15, 2021 4:42 pm
Forum: Tech
Topic: woodruff keys
Replies: 8
Views: 346

woodruff keys

Hello , can you tell me the right way with the woodruff keys ? i 've received two identical keys for the alternator shaft and the timing shaft which have closes diameters. reading '' british unit single '' , i find the dimensions and for these two : ( very useful anyway ) alternator hight : 5.97 mm ...
by FGF
Wed Jan 13, 2021 3:19 pm
Forum: Project bikes
Topic: Little BSS cafe racer
Replies: 64
Views: 11597

Re: Little BSS cafe racer

hello , just an omission , replacing the timing crank pinion i 'd like to be sure of it 's position : pinion.jpg the front face ( 1 ) with no shoulder outside and the rear face ( 2 ) with the shoulder inside against the worm gear ? is it correct ? the timing mark is on the flat face outside ( red ar...
by FGF
Thu Dec 24, 2020 11:06 am
Forum: Project bikes
Topic: LOBE 2 20-21
Replies: 92
Views: 9287

Re: LOBE 2 20-21

An English bike with no leaks ...is it ever an English bike ??
nice work anyway.
by FGF
Thu Dec 24, 2020 11:03 am
Forum: Frame
Topic: B50 Frame CAD files
Replies: 11
Views: 2656

Re: B50 Frame CAD files

Hello Gerry , No problem for this. It's true that the 3D files are sometimes difficult to translate. But there is a good news , Solidworks recent releases can open CATIA V5 and CREO files directly without step or IGES files. so i can send my original files if need be. at this moment , i prefer a pri...
by FGF
Wed Dec 23, 2020 2:47 pm
Forum: Frame
Topic: B50 Frame CAD files
Replies: 11
Views: 2656

Re: B50 Frame CAD files

After working with my fisrt sofware, I restored both files with a 2016 release of Solidworks with the standard option. (pictures joined) I can make the Step with this release of Solidworks , maybe it can change the restoration for you. My old licence of ProEngineer- CREO is obsolete but i can ask a ...
by FGF
Wed Dec 23, 2020 11:29 am
Forum: Frame
Topic: B50 Frame CAD files
Replies: 11
Views: 2656

Re: B50 Frame CAD files

Hello , The original file is made with an educational release of a wellknown software ( i prefer to write it in a personal mail ) because i was a mechanical teacher until 2019. When i recover the Step or Iges file with Solidworks ( another 3D software ) there is only a little problem with the Step r...
by FGF
Thu Dec 10, 2020 11:28 am
Forum: Project bikes
Topic: LOBE 2 20-21
Replies: 92
Views: 9287

Re: LOBE 2 20-21

Lastly , some good news , fine !
by FGF
Thu Dec 03, 2020 3:30 pm
Forum: Frame
Topic: B50 Frame CAD files
Replies: 11
Views: 2656

Re: B50 Frame CAD files

Hello ,

I 'm always waiting for my oil pump , being overhauled at PES for many weeks ...times are tough !
so , i continue the B50 CAD design .
assembly.jpg
This assembly avalaible .
by FGF
Mon Nov 23, 2020 3:31 pm
Forum: Frame
Topic: B50 Frame CAD files
Replies: 11
Views: 2656

Re: B50 Frame CAD files

i try to give an access on the GRABCAD website .
to download a file , create an account and download it in the free library.

prefer the second release '' B50_frame_V2.IGS ''
by FGF
Mon Nov 23, 2020 12:11 pm
Forum: Frame
Topic: B50 Frame CAD files
Replies: 11
Views: 2656

B50 Frame CAD files

Hello , I've designed a copy of the B50 frame with my own CAD . i 've used the blueprint of B50.org and some measurements on my own B50SS. a few little functions are missing and some little mistakes , i guess . if you find some , please tell me . next , i'll design the swingingarm and it's spindle w...
by FGF
Sat Nov 21, 2020 10:54 am
Forum: Tech
Topic: Back plate oil seal
Replies: 9
Views: 933

Re: Back plate oil seal

The oil seal with the smaller inner diameter is for the camshaft 40-0679/70-8153. metric 19.05 x 30.22 x 6.3mm The oil seal you require is 40-0243/70-3833 and used on ALL models. metric 21.35 x 30.22 x 6.3mm regards Chris Ripe Motorcycles Thanks Chris , i 'm happy to see that the '' 21.35 mm ID '' ...
by FGF
Fri Nov 20, 2020 10:15 am
Forum: Tech
Topic: Decompressor Bracket
Replies: 4
Views: 660

Re: Decompressor Bracket

Hello Johnu ,
on my B50SS 1971 the bracket is fitted directly on the two central nuts ,like in the owner 's manual .
by FGF
Fri Nov 20, 2020 10:11 am
Forum: Tech
Topic: Back plate oil seal
Replies: 9
Views: 933

Re: Back plate oil seal

Thanks Ghislain , then i don't understand : if i order a '' 40-0243 '' at PES , Draganfly or British unit single , they say that it 's suitable for the B50 1971 and it 's long sleeve gear bush ... on the picture supplier , i can read on the seal 0.75 - 1.18 - 0.25 '' 0.75 '' so 19.05 mm for the ID t...
by FGF
Thu Nov 19, 2020 7:06 pm
Forum: Tech
Topic: Back plate oil seal
Replies: 9
Views: 933

Re: Back plate oil seal

Thanks Ghislain , for you the 40-0243 ( ID too short ) is a C15 part . PES sold it for the B50 and Draganfly sell the same with 0.75 '' as ID for a 40-0243 like PES. 0.75''' is too short for the bush. the B50 's bush is longer than the mainshaft for about 9/10 mm. The seal must be fitted on it for t...
by FGF
Thu Nov 19, 2020 4:07 pm
Forum: Tech
Topic: Back plate oil seal
Replies: 9
Views: 933

Back plate oil seal

Hello , i wanted to replace the back plate oil seal with one bought at PES 40-0243 ( 0.75 - 1.187 - 0.25 '') the sleeve gear bushes have been removed by two new ones bought at PES too. sleeve_bush (2).jpg outer diameter of the mounted bush : about 21.5 mm inner diameter of the new oil seal : about 1...
by FGF
Thu Nov 19, 2020 10:55 am
Forum: Parts & Bikes wanted
Topic: B50 Decompression lever wanted.
Replies: 6
Views: 2311

Re: B50 Decompression lever wanted.

Hello , i was looking for a good one too. I bought a spare part but the lever and the spindle splines are not fines. i 'm not sure to really understand : the S*zuki spindle ( like this one ) can replace the BSA spindle ? correct diameter and length ... DRZ400_axe.jpg it seems to be more easily found...
by FGF
Wed Nov 18, 2020 11:52 am
Forum: Project bikes
Topic: Little BSS cafe racer
Replies: 64
Views: 11597

Re: Little BSS cafe racer

Hello ,

waiting for my oil pump, i 've carried on the Frame file with my CAD .
i 've corrected some mistakes.

i use it to try to design a welded new tank and even new seat.
Frame_2.jpg
i can send an IGES or STEP file , if need be...
Francois
by FGF
Tue Nov 17, 2020 12:05 pm
Forum: Tech
Topic: Fitting Allen screws to rocker box on B50.
Replies: 35
Views: 6580

Re: Fitting Allen screws to rocker box on B50.

thanks Trevor ,

i 've finished mechanical teaching for a year .
i do enjoy such an accurate demonstration.

reading the posts , the two solutions are reliables :
to use the original head threads ( with your advises of course ! ) or to fit helicoils.

francois
by FGF
Sun Nov 15, 2020 10:57 am
Forum: Tech
Topic: Fitting Allen screws to rocker box on B50.
Replies: 35
Views: 6580

Re: Fitting Allen screws to rocker box on B50.

Nice work Tom , thanks.
i 'd have prefered a solution with no machining , but these studs are really longs.
Francois
by FGF
Sun Nov 15, 2020 10:52 am
Forum: Project bikes
Topic: LOBE 2 20-21
Replies: 92
Views: 9287

Re: LOBE 2 20-21

i was a great fan of motocross , younger.
i rode two bultaco 250 in the seventies , ( in the eighties some japaneses too <218 <218 )

i 'd be glad to see your side car on a picture in action or not ...
by FGF
Sat Nov 14, 2020 5:58 pm
Forum: Tech
Topic: Fitting Allen screws to rocker box on B50.
Replies: 35
Views: 6580

Re: Fitting Allen screws to rocker box on B50.

It 's a good news , Thanks eebtr7 ,
you did it on a B50 or the B44 like tridenperu said ?
by FGF
Sat Nov 14, 2020 2:11 pm
Forum: Tech
Topic: Fitting Allen screws to rocker box on B50.
Replies: 35
Views: 6580

Re: Fitting Allen screws to rocker box on B50.

If it is the same as a B44 then you only need to use a couple of Allen screws at the right rear, it is these two studs that prevent the rocker box being removed. The rest of of them can stay the same so the issue of the head steady fix doesn't arise. Hello tridenperu , i 'd like to try your way on ...
by FGF
Sat Nov 14, 2020 2:03 pm
Forum: Project bikes
Topic: LOBE 2 20-21
Replies: 92
Views: 9287

Re: LOBE 2 20-21

hello Beat ,

the neck was in rest for some weeks but the brain always about 8000 rev/min.
take care about the engine anyway ...

next time , kickstarter or ...electric stater ?

Francois
by FGF
Thu Nov 12, 2020 11:41 am
Forum: Tech
Topic: Clutch Pushrod???
Replies: 17
Views: 1946

Re: Clutch Pushrod???

Hello Beat , always a little sarcastic , you' re right , if the ball can't turn on itself , the pushrod could have an unusual wear ... i just wanted to tell that when the classic suppliers have no stock , the bicycles one have some compliants parts. as you wrote about the frequent engine dissassembl...
by FGF
Tue Nov 10, 2020 12:07 pm
Forum: Tech
Topic: Clutch Pushrod???
Replies: 17
Views: 1946

Re: Clutch Pushrod???

Hello , i found one 5.8 mm ball in a cycle and scooter shop , not a bike shop. these balls are used to make the steering bearing cycles. I fitted it wthout any problem , a little tight but it doesn't fall down like the 5.5 mm one ! i bought after a new one at PES when it was avalaible . i 'm not sur...
by FGF
Fri Oct 30, 2020 7:24 pm
Forum: Tech
Topic: shims VS Thakeray washers
Replies: 14
Views: 1615

Re: shims VS Thakeray washers

Thanks Beat
I put two because i didn't Know which supplier could sell Some of them to have a larger one.
Momus just gave me à solution.
As i needed PES parts Mark has advised me to keep a little offset .

Two solutions , I am very happy now. :smile:
by FGF
Fri Oct 30, 2020 3:05 pm
Forum: Tech
Topic: shims VS Thakeray washers
Replies: 14
Views: 1615

Re: shims VS Thakeray washers

Sorry Beat ,
what do you mean with '' wrong IMO '' ?

i 'm looking for new thrustwashers and it 's not easy :
i find the B50 genuine parts but no '' calibrated parts '' like B25 's ones.
by FGF
Tue Oct 27, 2020 2:59 pm
Forum: Tech
Topic: shims VS Thakeray washers
Replies: 14
Views: 1615

Re: shims VS Thakeray washers

Thanks Momus .

almost 0.03 '' , 0.8 mm with cold engine .
B25.jpg
is this the BSA B25 value '?
by FGF
Mon Oct 26, 2020 11:06 am
Forum: Tech
Topic: shims VS Thakeray washers
Replies: 14
Views: 1615

Re: shims VS Thakeray washers

sorry , i've forgotten ...

third solution : is it a problem to ride with a little offset between the valve stem and the tappet adjuster screw ?
the previous owner of my B50 rode like that , i don't really trust him .
by FGF
Sun Oct 25, 2020 10:07 pm
Forum: Tech
Topic: shims VS Thakeray washers
Replies: 14
Views: 1615

Re: shims VS Thakeray washers

Thanks Beat . i was curious to know if this problem was very usual on the unit singles . my second photo comes from the Web by a rider wich had this problem too. i 've taken a bit from the rocker arm , a little , for the rocker bore it 's not easy Momus , may be necessary. To choice shims , what abo...
by FGF
Sun Oct 25, 2020 11:46 am
Forum: Tech
Topic: shims VS Thakeray washers
Replies: 14
Views: 1615

shims VS Thakeray washers

Hello , removing the B50 rocker box , i find a wrong position for the Exhaust tappet adjuster : the end of the screw '' overcome the chamfer '' . rock_echap.jpg i wanted to fit a larger thrustwasher but the gap is very thin : there is a risk for the rocker to reach the housing. and the gap for the t...