Std b50 gearbox drain plug.B50ForumUser wrote: ↑Sat Dec 26, 2020 10:27 pm Quick question - does anyone recognize this part? Found it in the BSA box, but don't know what it is ...
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- Fri Jan 01, 2021 11:02 pm
- Forum: Project bikes
- Topic: 1972 B50 SS Return to Flight .
- Replies: 91
- Views: 5315
Re: 1972 B50 SS Return to Flight.
- Thu Dec 31, 2020 8:34 pm
- Forum: Project bikes
- Topic: 1972 B50 SS Return to Flight .
- Replies: 91
- Views: 5315
Re: 1972 B50 SS Return to Flight.
Its the std oif b25/b50 gearbox drain plug.B50ForumUser wrote: ↑Sat Dec 26, 2020 10:27 pm Quick question - does anyone recognize this part? Found it in the BSA box, but don't know what it is ...
- Mon Dec 07, 2020 8:00 pm
- Forum: Tech
- Topic: clutch friction plates
- Replies: 7
- Views: 843
Re: clutch friction plates
Having at last finished the 30 year rebuild of my 1971 B25SS I found the clutch was slipping. On checking the friction plates, I found that they were 0.130" thick, well undersize. (Should have checked them before re building the clutch) Having looked at the costs of new plates they vary widely from...
- Sat Nov 07, 2020 1:41 pm
- Forum: Tech
- Topic: Clutch Pushrod???
- Replies: 17
- Views: 2330
Re: Clutch Pushrod???
Ball dia is 7/32"SteveS wrote: ↑Sun Nov 01, 2020 3:59 pm Hi Johnu
I admire you putting the engine back together without a manual or parts book. Remember you have access to the following info on the site:
B50 Parts and handbooks
Ball - clutch push rod, Part number 60-2363, 3/32"
- Fri Jul 03, 2020 7:19 am
- Forum: Parts & Bikes wanted
- Topic: B50 MX Camshaft wanted
- Replies: 15
- Views: 2529
- Wed Jul 01, 2020 11:36 am
- Forum: Parts & Bikes wanted
- Topic: B50 MX Camshaft wanted
- Replies: 15
- Views: 2529
Re: B50 MX Camshaft wanted
Or genuine BSA new old stock from midgie.
- Sat Jun 13, 2020 5:59 pm
- Forum: Project bikes
- Topic: T 25 Project
- Replies: 7
- Views: 1927
Re: T 25 Project
Looks a great little project, correct with the date code Nov 70.
- Tue Jun 02, 2020 9:05 am
- Forum: Tech
- Topic: B40 triple clamp material
- Replies: 13
- Views: 2485
Re: B40 triple clamp material
I just figured you need all the help you can getminetymenace wrote: ↑Tue Jun 02, 2020 8:58 am I know that midgie, but this is the Unit Singles forum....![]()
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- Mon Jun 01, 2020 8:58 pm
- Forum: Tech
- Topic: B40 triple clamp material
- Replies: 13
- Views: 2485
Re: B40 triple clamp material
Apart from the 71 oif twins of course.minetymenace wrote: ↑Mon Jun 01, 2020 12:35 pm All '71 and later OIF bikes had Aluminium fork yokes.
- Mon Jun 01, 2020 7:19 pm
- Forum: Project bikes
- Topic: Where was it made?
- Replies: 11
- Views: 2387
Re: Where was it made?
I have a fleetstar motor on the bench now, rebuilding it for a friend.NG 02830 OCT 71 date code, this one has seen some action!
- Fri May 08, 2020 3:56 pm
- Forum: Project bikes
- Topic: B25 SS CV19 project
- Replies: 71
- Views: 10737
Re: B25 SS CV19 project
I have spent some time today looking through the box of bits that came with the machine. I notice that the fork stanchions are slightly pitted. Is a re-chrome and grind economically feasible when there seems to be new items readily available for about £80/pair?? The only usable thing left of the se...
- Mon May 04, 2020 10:41 pm
- Forum: Tech
- Topic: B50 rotor nut.
- Replies: 9
- Views: 2676
Re: B50 rotor nut.
I have b50 cranks here that are 5/8 x 20 tpi and 5/8 x 18 tpi . The parts book list's the nut as 5/8 unf but not all are!
- Tue Apr 07, 2020 9:19 pm
- Forum: Tech
- Topic: Front Brake Stay/Fork?
- Replies: 19
- Views: 2743
Re: Front Brake Stay/Fork?
I was enjoying it!minetymenace wrote: ↑Tue Apr 07, 2020 2:07 pm Thanks for putting us straight midgie, what took you so long?![]()
- Tue Apr 07, 2020 2:04 pm
- Forum: Tech
- Topic: Front Brake Stay/Fork?
- Replies: 19
- Views: 2743
Re: Front Brake Stay/Fork?
Its a later bsa/tri slider for the models that only used the 8" conical front hub.
- Tue Mar 31, 2020 10:06 pm
- Forum: Tech
- Topic: Firing Up tr5 For First Time In Years
- Replies: 19
- Views: 3250
Re: Firing Up tr5 For First Time In Years
I would strip the motor now, and clean the frame out then you know for sure that all is well. Firing it up without doing this could be costly.
- Fri Mar 06, 2020 2:23 pm
- Forum: This Forum
- Topic: TR5mx
- Replies: 2
- Views: 3595
Re: TR5mx
The tr5mx is a bsa all but tank badge, and made at bsa, so no problem.
- Fri Mar 06, 2020 2:21 pm
- Forum: Tech
- Topic: B50ss verses B50mx Frame
- Replies: 6
- Views: 1744
Re: B50ss verses B50mx Frame
Yes the long footrest bolt is 7/16" dia on the 73 mx/tr5mx/tr5t, up to 72 models they are 3/8".
- Thu Mar 05, 2020 4:11 pm
- Forum: Parts & Bikes wanted
- Topic: B50 parts
- Replies: 2
- Views: 1357
Re: B50 parts
I think I have a spare l/h switch .
- Thu Mar 05, 2020 4:08 pm
- Forum: Tech
- Topic: B50ss verses B50mx Frame
- Replies: 6
- Views: 1744
Re: B50ss verses B50mx Frame
The 73 mx frame has beefed up seat mounting and rear mudguard mounting brackets, and no electric box brackets the same as the 71/72 mx version. As well as 3/8" bolt holes for the rear engine plates as opposed to the rest which are 5/16".
- Wed Mar 04, 2020 8:39 am
- Forum: Tech
- Topic: Rocker Box contents - interchangeability?
- Replies: 6
- Views: 1722
Re: Rocker Box contents - interchangeability?
The adjuster screw did change, these are longer on b50 than others, Steve is correct, part number did not change on the exhaust rocker arm.
- Tue Mar 03, 2020 9:24 pm
- Forum: Tech
- Topic: Rocker Box contents - interchangeability?
- Replies: 6
- Views: 1722
Re: Rocker Box contents - interchangeability?
Exhaust rocker arm is the only difference on the B50, shafts and inlet arm are the same from c15/b40/b44. The only difference on the B50 arm is the pad which contacts the valve lifter spindle is larger.
- Sat Feb 29, 2020 5:10 pm
- Forum: Requests
- Topic: B25 oil pump worm gear removal
- Replies: 5
- Views: 6440
Re: B25 oil pump worm gear removal
Remove the oil pump drive gear also, this will give more room.
- Sat Feb 29, 2020 4:24 pm
- Forum: Requests
- Topic: B25 oil pump worm gear removal
- Replies: 5
- Views: 6440
Re: B25 oil pump worm gear removal
You wont get the puller legs behind the worm gear, the legs need to be thin enough to go between the worm teeth. Then put a jubilee clip across the legs to stop them pulling apart.
- Fri Feb 28, 2020 10:13 pm
- Forum: Tech
- Topic: NEB clutch primary cover
- Replies: 7
- Views: 1755
Re: NEB clutch primary cover
71-2026 is the correct type to use, as for the std 10 plate clutch. I thought you might have had a b25 or victor item, I have noticed many people use the trailblazer type chaincase, might be worth offering one up just to see. I have fitted neb clutches and have never had a problem with the late case...
- Fri Feb 28, 2020 2:42 pm
- Forum: Tech
- Topic: NEB clutch primary cover
- Replies: 7
- Views: 1755
Re: NEB clutch primary cover
What is the casting number on the primary cover you are using Jean Paul?
- Fri Feb 21, 2020 9:02 am
- Forum: Parts & Bikes wanted
- Topic: B25/44 Mainshaft sleeve gear wanted
- Replies: 3
- Views: 1425
Re: B25/44 Mainshaft sleeve gear wanted
I have one, pm me cheers.
- Wed Jan 22, 2020 8:24 pm
- Forum: Tech
- Topic: B50 rotor nut.
- Replies: 9
- Views: 2676
- Wed Jan 22, 2020 2:36 pm
- Forum: Tech
- Topic: B50 rotor nut.
- Replies: 9
- Views: 2676
B50 rotor nut.
Be sure that the thread on the crank is 5/8" x 18 TPI as it says in the parts book, as some I have found are 5/8" x 20 cycle thread, just a heads up before you try to wind on the wrong nut!
- Fri Oct 04, 2019 12:56 pm
- Forum: Project bikes
- Topic: Ben's B50T trail bike
- Replies: 38
- Views: 11809
Re: bbenxe's B50T flat/street tracker
Typical std b50 rod trick, breaks there every time, you were very lucky not to destroy the cases.
- Sat Sep 28, 2019 9:39 pm
- Forum: Parts & Bikes wanted
- Topic: B50 1971 Crank shaft nut 21-2066
- Replies: 2
- Views: 1443
Re: B50 1971 Crank shaft nut 21-2066
The b50 crankshaft nut is the plain type Steve, its possible to put a 5/8" cycle tap through a 5/8" unf nut, this works a treat.
- Thu Sep 19, 2019 7:45 am
- Forum: Tech
- Topic: B25T Rear Chain Oiler – Cap Off?
- Replies: 17
- Views: 4927
Re: B25T Rear Chain Oiler – Cap Off?
A problem I have seen many times, is owners mix up the normal inspection plug and the vented type that has no internal clearance, which then fouls the clutch pushrod adjuster screw.
- Mon Sep 09, 2019 3:23 pm
- Forum: Parts for sale
- Topic: nos b50mx engine.
- Replies: 3
- Views: 3243
nos b50mx engine.
Genuine new old stock b50mx engine with factory labels from late 1971.
- Fri Aug 30, 2019 7:50 pm
- Forum: Parts for sale
- Topic: new old stock b50 crankcases
- Replies: 2
- Views: 3004
new old stock b50 crankcases
Genuine new old stock b50 crankcases for sale, complete with all studs and bearings condition perfect, still has the factory part no. tag. Pm me if interested.
- Wed Aug 28, 2019 3:54 pm
- Forum: Tech
- Topic: Rough rear wheel rebuild offset
- Replies: 2
- Views: 3150
Re: Rough rear wheel rebuild offset
The offset measured across the brake drum to the edge of the rim for a std wm3 rim is 1. 7/8".
- Wed Aug 28, 2019 3:45 pm
- Forum: Tech
- Topic: B25T Rear Chain Oiler – Cap Off?
- Replies: 17
- Views: 4927
Re: B25T Rear Chain Oiler – Cap Off?
None of the 250 or 500cc oil in frame singles ever left the factory with a chain oiler, it was blocked off with a fibre washer and a 1/4" unc x 5/8" setscrew. The bsa badged oif 250cc machines also had qty1 screwed breather plug fitted as std. The b50 of course didn't need it with the breather alrea...
- Thu Jul 18, 2019 4:25 pm
- Forum: Tech
- Topic: Spacer plate
- Replies: 3
- Views: 1791
Re: Spacer plate
B50 stud centre's are approx 80mm.
- Sun Jun 30, 2019 4:22 pm
- Forum: Tech
- Topic: 8inch front brake
- Replies: 16
- Views: 5778
Re: 8inch front brake
Spot on JB.
- Wed Apr 03, 2019 1:28 pm
- Forum: Project bikes
- Topic: Hammer of the Gods - B50SS Project
- Replies: 151
- Views: 55229
Re: Hammer of the Gods - B50SS Project
You need the lobe on the cam facing the gearchange quadrant, the slot will be upright. Dab a bit of paint on the top of the adjuster screw to show you its in the correct position and not 180 degrees out,adjustment should then be no more than 90 degrees either way from the vertical position.
- Tue Apr 02, 2019 8:05 am
- Forum: Project bikes
- Topic: 1971 B50T Victor 500 Restoration.
- Replies: 67
- Views: 23714
Re: 1971 B50T Victor 500 Restoration.
Nice work Gene, looks super.
- Thu Feb 07, 2019 4:55 pm
- Forum: Tech
- Topic: Prop stand
- Replies: 13
- Views: 4228
Re: Prop stand
The oif 250, and early b50ss/t machines had a hook type spring anchor on the prop stand, this changed to the barrel type on the later ones, both had the cross hatch on the foot.