Search found 1168 matches

by midgie
Tue Apr 07, 2020 9:19 pm
Forum: Tech
Topic: Front Brake Stay/Fork?
Replies: 19
Views: 328
Flag: England

Re: Front Brake Stay/Fork?

minetymenace wrote:
Tue Apr 07, 2020 2:07 pm
Thanks for putting us straight midgie, what took you so long? :thumb
I was enjoying it!
by midgie
Tue Apr 07, 2020 2:04 pm
Forum: Tech
Topic: Front Brake Stay/Fork?
Replies: 19
Views: 328
Flag: England

Re: Front Brake Stay/Fork?

Its a later bsa/tri slider for the models that only used the 8" conical front hub.
by midgie
Tue Mar 31, 2020 10:06 pm
Forum: Tech
Topic: Firing Up tr5 For First Time In Years
Replies: 16
Views: 444
Flag: England

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.
by midgie
Fri Mar 06, 2020 2:23 pm
Forum: This Forum
Topic: TR5mx
Replies: 2
Views: 564
Flag: England

Re: TR5mx

The tr5mx is a bsa all but tank badge, and made at bsa, so no problem.
by midgie
Fri Mar 06, 2020 2:21 pm
Forum: Tech
Topic: B50ss verses B50mx Frame
Replies: 6
Views: 451
Flag: England

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".
by midgie
Thu Mar 05, 2020 4:11 pm
Forum: Parts & Bikes wanted
Topic: B50 parts
Replies: 1
Views: 152
Flag: England

Re: B50 parts

I think I have a spare l/h switch .
by midgie
Thu Mar 05, 2020 4:08 pm
Forum: Tech
Topic: B50ss verses B50mx Frame
Replies: 6
Views: 451
Flag: England

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".
by midgie
Wed Mar 04, 2020 8:39 am
Forum: Tech
Topic: Rocker Box contents - interchangeability?
Replies: 6
Views: 371
Flag: England

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.
by midgie
Tue Mar 03, 2020 9:24 pm
Forum: Tech
Topic: Rocker Box contents - interchangeability?
Replies: 6
Views: 371
Flag: England

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.
by midgie
Sat Feb 29, 2020 5:10 pm
Forum: Requests
Topic: B25 oil pump worm gear removal
Replies: 5
Views: 776
Flag: England

Re: B25 oil pump worm gear removal

Remove the oil pump drive gear also, this will give more room.
by midgie
Sat Feb 29, 2020 4:24 pm
Forum: Requests
Topic: B25 oil pump worm gear removal
Replies: 5
Views: 776
Flag: England

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.
by midgie
Fri Feb 28, 2020 10:13 pm
Forum: Tech
Topic: NEB clutch primary cover
Replies: 7
Views: 416
Flag: England

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...
by midgie
Fri Feb 28, 2020 2:42 pm
Forum: Tech
Topic: NEB clutch primary cover
Replies: 7
Views: 416
Flag: England

Re: NEB clutch primary cover

What is the casting number on the primary cover you are using Jean Paul?
by midgie
Fri Feb 21, 2020 9:02 am
Forum: Parts & Bikes wanted
Topic: B25/44 Mainshaft sleeve gear wanted
Replies: 3
Views: 276
Flag: England

Re: B25/44 Mainshaft sleeve gear wanted

I have one, pm me cheers.
by midgie
Wed Jan 22, 2020 8:24 pm
Forum: Tech
Topic: B50 rotor nut.
Replies: 2
Views: 466
Flag: England

Re: B50 rotor nut.

kommando wrote:
Wed Jan 22, 2020 5:25 pm
The 20 TPI is the pre OIF rotor nut, so either dropped into the wrong box or a supplier assuming they were the same.
No the thread on the crank is 20tpi.
by midgie
Wed Jan 22, 2020 2:36 pm
Forum: Tech
Topic: B50 rotor nut.
Replies: 2
Views: 466
Flag: England

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!
by midgie
Fri Oct 04, 2019 12:56 pm
Forum: Project bikes
Topic: bbenxe's B50T flat/street tracker
Replies: 24
Views: 5969
Flag: England

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.
by midgie
Sat Sep 28, 2019 9:39 pm
Forum: Parts & Bikes wanted
Topic: B50 1971 Crank shaft nut 21-2066
Replies: 2
Views: 552
Flag: England

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.
by midgie
Thu Sep 19, 2019 7:45 am
Forum: Tech
Topic: B25T Rear Chain Oiler – Cap Off?
Replies: 17
Views: 3038
Flag: England

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.
by midgie
Mon Sep 09, 2019 3:23 pm
Forum: Parts for sale
Topic: nos b50mx engine.
Replies: 3
Views: 2090
Flag: England

nos b50mx engine.

Genuine new old stock b50mx engine with factory labels from late 1971.
by midgie
Fri Aug 30, 2019 7:50 pm
Forum: Parts for sale
Topic: new old stock b50 crankcases
Replies: 2
Views: 2012
Flag: England

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.
by midgie
Wed Aug 28, 2019 3:54 pm
Forum: Tech
Topic: Rough rear wheel rebuild offset
Replies: 2
Views: 1063
Flag: England

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".
by midgie
Wed Aug 28, 2019 3:45 pm
Forum: Tech
Topic: B25T Rear Chain Oiler – Cap Off?
Replies: 17
Views: 3038
Flag: England

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...
by midgie
Thu Jul 18, 2019 4:25 pm
Forum: Tech
Topic: Spacer plate
Replies: 3
Views: 1098
Flag: England

Re: Spacer plate

B50 stud centre's are approx 80mm.
by midgie
Sun Jun 30, 2019 4:22 pm
Forum: Tech
Topic: 8inch front brake
Replies: 16
Views: 3920
Flag: England

Re: 8inch front brake

Spot on JB.
by midgie
Wed Apr 03, 2019 1:28 pm
Forum: Project bikes
Topic: Hammer of the Gods - B50SS Project
Replies: 148
Views: 35662
Flag: England

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.
by midgie
Tue Apr 02, 2019 8:05 am
Forum: Project bikes
Topic: 1971 B50T Victor 500 Restoration.
Replies: 67
Views: 15720
Flag: England

Re: 1971 B50T Victor 500 Restoration.

Nice work Gene, looks super.
by midgie
Thu Feb 07, 2019 4:55 pm
Forum: Tech
Topic: Prop stand
Replies: 13
Views: 2783
Flag: England

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.
by midgie
Tue Dec 25, 2018 12:41 am
Forum: Parts & Bikes wanted
Topic: horn bracket
Replies: 16
Views: 3918
Flag: England

Re: horn bracket

minetymenace wrote:
Thu Dec 20, 2018 6:26 pm
Early oif B25 Chris, my <12fs is on the left and B50 type gearbox mainshaft and kick start mech..
Yes I agree that's all correct for the b25fs.
by midgie
Tue Dec 25, 2018 12:41 am
Forum: Parts & Bikes wanted
Topic: horn bracket
Replies: 16
Views: 3918
Flag: England

Re: horn bracket

minetymenace wrote:
Thu Dec 20, 2018 6:26 pm
Early oif B25 Chris, my <12fs is on the left and B50 type gearbox mainshaft and kick start mech..
Yes I agree that's all correct for the b25fs.
by midgie
Thu Dec 20, 2018 5:20 pm
Forum: Parts & Bikes wanted
Topic: horn bracket
Replies: 16
Views: 3918
Flag: England

Re: horn bracket

Bracket shown in shot is the oif b25 item, mounted on the r/h side. Hence not for the b50.
by midgie
Tue Nov 06, 2018 9:06 am
Forum: Tech
Topic: cam followers
Replies: 55
Views: 11770
Flag: England

Re: cam followers

The later thick foot followers were fitted as std on the oif 250 singles. But I have found on a few of the very early examples the earlier thin foot type had been fitted from the factory. The b50 always used the thick foot type (71-2513) from the start.
by midgie
Tue Oct 09, 2018 3:20 pm
Forum: Tech
Topic: How thin can a liner be ?
Replies: 5
Views: 1537
Flag: England

Re: How thin can a liner be ?

I have used 88mm bore on the standard liner for many years, never had a problem.
by midgie
Thu Sep 20, 2018 12:41 pm
Forum: Parts & Bikes wanted
Topic: b25t/b50t/t25t front mudguard wanted.
Replies: 1
Views: 1212
Flag: England

Re: b25t/b50t/t25t front mudguard wanted.

Have found one :thumb
by midgie
Mon Sep 10, 2018 2:28 pm
Forum: Parts & Bikes wanted
Topic: b25t/b50t/t25t front mudguard wanted.
Replies: 1
Views: 1212
Flag: England

b25t/b50t/t25t front mudguard wanted.

Has anyone got a spare front genuine mudguard they could sell me please? must be in good condition, but not worried about the paint, cheers.
by midgie
Thu Sep 06, 2018 12:38 pm
Forum: Parts for sale
Topic: parts for sale
Replies: 0
Views: 2511
Flag: England

parts for sale

Just arrived. b50 crankcases superb condition complete with all studs etc. other b50 parts also. pm me for price if interested.
by midgie
Sun Aug 26, 2018 10:21 am
Forum: Project bikes
Topic: B44 MX Motor
Replies: 48
Views: 12252
Flag: England

Re: B44 MX Motor

:thumb
beat wrote::cool: :thumb :thumb
by midgie
Sun Aug 19, 2018 6:19 pm
Forum: Tech
Topic: gasket question
Replies: 3
Views: 1222
Flag: England

Re: gasket question

There is no gasket fitted as std between the crankcase and inner timer cover. the factory used a kind of sealant like wellseal. I have seen these gaskets that were fitted after market on some motors I have had in from the usa.
by midgie
Sun Jul 29, 2018 11:36 am
Forum: This Forum
Topic: Hello???
Replies: 18
Views: 5272
Flag: England

Re: Hello???

High winds and non stop rain in the south of the uk, means not much happening on the bike front, well cheesed off.
by midgie
Sun Jul 08, 2018 10:34 am
Forum: Tech
Topic: Stuck in 4th
Replies: 9
Views: 2354
Flag: England

Re: Stuck in 4th

It is best if before attempting to remove the inner timing cover, to pull the cotter (split) pin out of the shaft that holds the shift plate, and then pull that shaft out (which holds the shift plate) by using one of the 2ba screws from the cover screwed into that shaft to pull it, which then allow...