Search found 331 matches

by crankbuster
Fri May 22, 2020 3:47 pm
Forum: Tech
Topic: pattern tricon switch
Replies: 11
Views: 348
Flag: Great Britain

Re: pattern tricon switch

Ah, that's it, I think that the Wipac used Beryllium Copper, more expensive.
by crankbuster
Fri May 22, 2020 7:57 am
Forum: Tech
Topic: pattern tricon switch
Replies: 11
Views: 348
Flag: Great Britain

Re: pattern tricon switch

Interesting, you have put a pin through the unused terminal position. The Triconsol switch used these extra terminals for the electric start button. I would like to understand what is different in the pattern switch. Is the contact a different shape, or is the plastic boss missing? Can’t see how, in...
by crankbuster
Thu May 21, 2020 8:57 am
Forum: Tech
Topic: pattern tricon switch
Replies: 11
Views: 348
Flag: Great Britain

Re: pattern tricon switch

TriconContacts.png
Wipac tricon contact arrangement
by crankbuster
Fri May 01, 2020 12:42 pm
Forum: Tech
Topic: B25 piston
Replies: 15
Views: 614
Flag: Great Britain

Re: B25 piston

Here's three common ones:
pistons.jpg
by crankbuster
Fri May 01, 2020 11:49 am
Forum: Tech
Topic: Leak back,
Replies: 20
Views: 936
Flag: Great Britain

Re: Leak back,

Here are the BSA pump dimensions
OILpUMP.jpg
I don't have the tolerances for the .375 but you can see that the extra length means it does not need to be so close
by crankbuster
Fri Apr 03, 2020 3:35 pm
Forum: Tech
Topic: Another question about speedometers
Replies: 17
Views: 1075
Flag: Great Britain

Re: Another question about speedometers

They're not cheap, and I haven't needed those myself so you will be testing!
I think that the reset knob metal and plastic can still be obtained as a spare, but there are some the wrong length.
by crankbuster
Fri Apr 03, 2020 10:03 am
Forum: Tech
Topic: Another question about speedometers
Replies: 17
Views: 1075
Flag: Great Britain

Re: Another question about speedometers

I have successfully 3D printed some of the internal plastic parts because I could not find a supplier.
If you want to try, I have put the Reset knob and Trip pinion on Shapeways: https://www.shapeways.com/shops/bsa3d?sort=newest
by crankbuster
Sun Oct 06, 2019 7:13 pm
Forum: Tech
Topic: Head gasket
Replies: 10
Views: 1850
Flag: Great Britain

Re: Head gasket

Tdc plug sçrews into the bolt hole on the drive side, and locates in the crank. The timing side takes the (optional) tacho drive and is in the inner timing cover (not the crank case). Best not get these mixed up! As above, don't trust the alternator timing marks until checked. I think the Tacho fit...
by crankbuster
Tue Jun 04, 2019 10:53 pm
Forum: Tech
Topic: Head stock/steering stem sizes
Replies: 3
Views: 1474
Flag: Great Britain

Re: Head stock/steering stem sizes

mm
Headstock.jpg
by crankbuster
Fri May 11, 2018 10:24 pm
Forum: Tech
Topic: Help with forks please!
Replies: 19
Views: 4963
Flag: Great Britain

Re: Help with forks please!

OK, I suggest that you put the leg back in the yokes and refit the spring and top nut. Forget about the tool and see if the spring pressure will override any damaged threads and allow the bolt to unscrew. If that fails, you need to loose the head of the bolt. Remove the leg and take out the spring. ...
by crankbuster
Fri May 11, 2018 8:47 pm
Forum: Tech
Topic: Help with forks please!
Replies: 19
Views: 4963
Flag: Great Britain

Re: Help with forks please!

In your first post you say
"Whole lower leg rotates round and the special tool at the top."
You know the tool must not rotate when you undo the bolt?
by crankbuster
Thu May 10, 2018 10:21 pm
Forum: Tech
Topic: Help with forks please!
Replies: 19
Views: 4963
Flag: Great Britain

Re: Help with forks please!

It doesn't matter that the lower leg rotates so long as the inside is held the bolt will unscrew .
You can see the slot that the tool engages with here https://youtu.be/ZfVUVx9P_CM
by crankbuster
Fri Apr 27, 2018 6:06 pm
Forum: Tech
Topic: B44VS Rear Crinkle Hub Rebuild
Replies: 6
Views: 2049
Flag: Great Britain

Re: B44VS Rear Crinkle Hub Rebuild

Hi,
That sounds about right.
Bike Looks Good too, enjoy!
Crinkle.JPG
by crankbuster
Thu Apr 26, 2018 10:52 pm
Forum: Tech
Topic: B44VS Rear Crinkle Hub Rebuild
Replies: 6
Views: 2049
Flag: Great Britain

Re: B44VS Rear Crinkle Hub Rebuild

1 no side play
2 approximately flush
Maybe this will help
https://youtu.be/kQK2YAD5OCQ
by crankbuster
Mon Mar 26, 2018 7:55 pm
Forum: Tech
Topic: Sealing washer for carb banjo
Replies: 3
Views: 1488
Flag: Great Britain

Re: Sealing washer for carb banjo

The washer is shown in the P34 drawings (courtesy to SRS publishing)
BsaCarb.JPG
For the B25 1971, it makes it into the parts list, but is not illustrated:
1971B25.JPG
In the Fury parts list it is finally shown in the diagram as well.
Furycarb.JPG
by crankbuster
Sun Mar 25, 2018 2:31 pm
Forum: Tech
Topic: Sealing washer for carb banjo
Replies: 3
Views: 1488
Flag: Great Britain

Re: Sealing washer for carb banjo

The mk 1 has always had a washer under the bolt head . The banjo itself seals against the flange (plastic) of the filter.
https://youtu.be/zRiKd7SbEXc
by crankbuster
Wed Oct 11, 2017 10:39 pm
Forum: Tech
Topic: B25 won't start
Replies: 17
Views: 3541
Flag: Great Britain

Re: B25 won't start

Most accurate fully advanced position
http://b50.org/phpBB2/download/file.php?id=5056
by crankbuster
Tue Oct 03, 2017 11:11 pm
Forum: Videos
Topic: Tail lamp
Replies: 0
Views: 2682
Flag: Great Britain

Tail lamp

by crankbuster
Fri Sep 08, 2017 12:53 pm
Forum: Videos
Topic: Headlamp
Replies: 2
Views: 1466
Flag: Great Britain

Re: Headlamp

No, the ammeter's fine, the trouble is not enough RAM .
(Rendering with ray tracing )
by crankbuster
Fri Sep 08, 2017 8:48 am
Forum: Videos
Topic: Headlamp
Replies: 2
Views: 1466
Flag: Great Britain

Headlamp

Headlamp assembly video:

https://youtu.be/JF1zUCxmxNc


Think my pilot bulb has blown
Render1.jpg
by crankbuster
Wed Mar 22, 2017 12:14 am
Forum: This Forum
Topic: BSA B25/TRIUMPH T25T
Replies: 7
Views: 2509
Flag: Great Britain

Re: BSA B25/TRIUMPH T25T

1971 Rockerboxes have larger studs, otherwise 68 to 70 are the same. 67 has the decompressor

https://youtu.be/6t32S9rLAfI
by crankbuster
Sat Mar 11, 2017 9:22 am
Forum: Tech
Topic: Electric Start
Replies: 635
Views: 138581
Flag: Great Britain

Re: Electric Start

Z4 Z5 aXLE.JPG
by crankbuster
Wed Mar 08, 2017 2:28 pm
Forum: Tech
Topic: Electric Start
Replies: 635
Views: 138581
Flag: Great Britain

Re: Electric Start

The 20 mm on Beats sketch is made up of the 5mm gap plus the width over the two sprockets which may not be 20
by crankbuster
Wed Mar 08, 2017 7:15 am
Forum: Tech
Topic: Electric Start
Replies: 635
Views: 138581
Flag: Great Britain

Re: Electric Start

Check it carefully because it is not the same as your sketch 1.5 is 1.0 mm, the sprocket width is designed by BSA not by Beat
by crankbuster
Tue Mar 07, 2017 8:28 pm
Forum: Tech
Topic: Electric Start
Replies: 635
Views: 138581
Flag: Great Britain

Re: Electric Start

Sprocket.JPG
by crankbuster
Mon Mar 06, 2017 9:59 pm
Forum: Tech
Topic: Electric Start
Replies: 635
Views: 138581
Flag: Great Britain

Re: Electric Start

by crankbuster
Sat Mar 04, 2017 11:22 pm
Forum: Tech
Topic: Electric Start
Replies: 635
Views: 138581
Flag: Great Britain

Re: Electric Start

new clutch Basket..
Basket.JPG
by crankbuster
Sat Mar 04, 2017 11:31 am
Forum: Tech
Topic: Electric Start
Replies: 635
Views: 138581
Flag: Great Britain

Re: Electric Start

Do you need the recess on the front of the gear? The alternator rotor and stator are flush. The rotor abuts the boss on the front. The chain line I have means that I cannot get the gear z2 to clear the basket and chain without the starter clashing with the crankcase. Sprocket.JPG sideview.JPG Sectio...
by crankbuster
Thu Mar 02, 2017 9:09 pm
Forum: Tech
Topic: Electric Start
Replies: 635
Views: 138581
Flag: Great Britain

Re: Electric Start

SideView.JPG
by crankbuster
Wed Mar 01, 2017 9:16 pm
Forum: Tech
Topic: Electric Start
Replies: 635
Views: 138581
Flag: Great Britain

Re: Electric Start

Ok, but it has to clear the clutch basket
Sprag.jpg
and you know how much that wobbles around!
by crankbuster
Mon Feb 27, 2017 10:45 pm
Forum: Tech
Topic: Electric Start
Replies: 635
Views: 138581
Flag: Great Britain

Re: Electric Start

Centre distances I have at present:
Centres.JPG
by crankbuster
Sun Feb 26, 2017 10:50 pm
Forum: Tech
Topic: Electric Start
Replies: 635
Views: 138581
Flag: Great Britain

Re: Electric Start

Of course.
Do you have the sketch for Z2/Z3?
Also note that the centre distances will be greater than your sketch. The pitch circles give the theoretical centre distance, in reality allowance is made for the pressure angle (20 degree) and a bit of clearance.
by crankbuster
Fri Feb 24, 2017 3:23 pm
Forum: Tech
Topic: Electric Start
Replies: 635
Views: 138581
Flag: Great Britain

Re: Electric Start

The 3D printed parts is here:
http://shpws.me/O7Vh
This is Selective Laser Sintered. The RepRap is more like a computerised hot glue gun.
by crankbuster
Thu Feb 23, 2017 9:51 pm
Forum: Tech
Topic: Final crankcase disassembly steps
Replies: 20
Views: 4276
Flag: Great Britain

Re: Final crankcase disassembly steps

Those things that bend are the spring anchors...
Just TAP gently side to side and the whole plate will usually come off
https://youtu.be/o3bPlWmetq8
by crankbuster
Thu Feb 23, 2017 9:44 pm
Forum: Tech
Topic: Electric Start
Replies: 635
Views: 138581
Flag: Great Britain

Re: Electric Start

Beat,
perhaps you would like a plastic printed one to try before Mark starts cutting metal again?
NewSprocket.JPG
by crankbuster
Wed Feb 22, 2017 11:42 pm
Forum: Tech
Topic: Electric Start
Replies: 635
Views: 138581
Flag: Great Britain

Re: Electric Start

NewSprocket.JPG
by crankbuster
Wed Feb 15, 2017 11:24 pm
Forum: Tech
Topic: I am all SCREWED up.
Replies: 10
Views: 2478
Flag: Great Britain

Re: I am all SCREWED up.

I think that you can forget UNF, they will most probably be BSF, remove one and you can see the difference.
BSF-Fine UNC-Coarse thread pitches.
by crankbuster
Mon Feb 13, 2017 10:22 am
Forum: Tech
Topic: Electric Start
Replies: 635
Views: 138581
Flag: Great Britain

Re: Electric Start

by crankbuster
Mon Feb 13, 2017 9:31 am
Forum: Project bikes
Topic: Plum Crazy E35 Fury Project
Replies: 252
Views: 99683
Flag: Great Britain

Re: Plum Crazy E35 Fury Project

Fury or Bandit cases being machined
https://youtu.be/XmKFeDszoxo