Search found 52 matches

by neil
Thu Jan 28, 2021 4:25 pm
Forum: Parts & Bikes wanted
Topic: B50MX 24T Gear wanted
Replies: 2
Views: 983

Re: B50MX 24T Gear wanted

Thanks for that.
by neil
Mon Jan 25, 2021 8:23 pm
Forum: Parts & Bikes wanted
Topic: B50MX 24T Gear wanted
Replies: 2
Views: 983

B50MX 24T Gear wanted

Hello all,
I am looking to buy a mainshaft 24t third gear 57-4665.
Any idea where I can get one?
Cheers
by neil
Mon Jun 29, 2020 8:22 am
Forum: Parts & Bikes wanted
Topic: B50 MX Camshaft wanted
Replies: 15
Views: 3818

B50 MX Camshaft wanted

Hello all,
Looking to buy a MX camshaft.
Cheers
by neil
Sun May 31, 2020 10:49 am
Forum: Tech
Topic: B50 Rocker box substitute
Replies: 6
Views: 1659

Re: B50 Rocker box substitute

Excellent Steve.
Cheers
Neil
by neil
Sat May 30, 2020 6:30 pm
Forum: Tech
Topic: B50 Rocker box substitute
Replies: 6
Views: 1659

Re: B50 Rocker box substitute

Good idea.

BTW ,I’ve found that although it was easy to open up the stud holes and the cover fitted nicely, that was before I fitted the valves. The cover will now not fit as it clashes with the valve springs.
So, will not be suitable. ☹️
by neil
Sat May 30, 2020 2:22 pm
Forum: Tech
Topic: B50 Rocker box substitute
Replies: 6
Views: 1659

Re: B50 Rocker box substitute

Where would you fit a chainsaw decompression valve on the B50 head?
by neil
Sat May 30, 2020 11:18 am
Forum: Tech
Topic: B50 Rocker box substitute
Replies: 6
Views: 1659

B50 Rocker box substitute

Hello all, Apologies as I know that this subject has been brought up before but don’t think the answers were conclusive. I have drilled out the stud holes on a C15 rocker cover including the dowel hole at 3/8” to suit a B50 head without reducing the wall thickness to paper thin. It fits nicely all r...
by neil
Wed Apr 03, 2019 6:56 am
Forum: Tech
Topic: Cheney /Faber frame info
Replies: 0
Views: 4638

Cheney /Faber frame info

Hello chaps, I am looking for the frame tube diameter and wall thickness for a BSA Cheney or Faber single downtube frame. 1. Top spine from headstock to seat. 2. Down tube from headstock to bottom frame rails. I think that going by the original Cheney brochure should be 1 3/4” for both. Faber looks ...
by neil
Tue May 15, 2018 1:06 pm
Forum: Parts & Bikes wanted
Topic: Cylinder head Rocker box wanted
Replies: 0
Views: 3867

Cylinder head Rocker box wanted

Hello all,
I require a few parts for a B50 SS engine.
A cylinder head, rocker box and a pair of pushrods.
Any help appreciated.
Cheers
by neil
Fri Mar 23, 2018 8:50 am
Forum: Tech
Topic: B50 gear selector Spring Anchor.
Replies: 3
Views: 2016

Re: B50 gear selector Spring Anchor.

Thanks for the reply midgie.
Now clear.
I’m collecting a B50 bottom end and thought that possibly the slotted screw and lock nut was a repair on this particular engine.

So folks, I,ll be on the lookout for a barrel,piston and head for this engine!

Cheers
by neil
Thu Mar 22, 2018 6:44 pm
Forum: Tech
Topic: B50 gear selector Spring Anchor.
Replies: 3
Views: 2016

B50 gear selector Spring Anchor.

Hello all, I have seen a B50 inner timing cover where the spring anchor post protrudes through the casing with a screwdriver slot and a lock nut fitted. Normally the post would screw into the casing on the inside with only a small bulge seen on the outside of the casing. There is an anchor post for ...
by neil
Fri Apr 07, 2017 10:03 pm
Forum: Parts & Bikes wanted
Topic: B50 engine/parts
Replies: 0
Views: 2688

B50 engine/parts

Hello all,
Looking for an upgrade to my Victor. Just putting out the feelers for the availability of a B50 engine or parts to build an engine for classic motocross.
How does the 441 square barrel and head bored to 500 perform as an alternative?
Any help appreciated.
Cheers
by neil
Wed Aug 05, 2015 9:16 pm
Forum: Tech
Topic: Pepping up a B44
Replies: 14
Views: 5156

Re: Pepping up a B44

No need to shut up.
This is what these forums are for.
I want to hear what people suggest, have done with their bikes.
It's all great stuff!
by neil
Wed Aug 05, 2015 9:10 am
Forum: Tech
Topic: Pepping up a B44
Replies: 14
Views: 5156

Re: Pepping up a B44

Thanks lads.
What about covering my bike to burn methanol?
Has anybody done this conversion and is there a big difference in performance?
by neil
Tue Aug 04, 2015 9:32 am
Forum: Tech
Topic: Pepping up a B44
Replies: 14
Views: 5156

Pepping up a B44

Hello all, Would like to pep up my wee victor which has a standard round barreled engine and running on petrol with 30mm Amal concentric carb and +0.040" piston. The camshaft is not MX. What is involved in boring out to accept the B50 piston. Does it involve using a stronger rod, big end bearing? or...
by neil
Fri Apr 22, 2011 9:14 am
Forum: Tech
Topic: Cheney B50
Replies: 3
Views: 1835

Cheney B50

Hello all,
Any Cheney experts out there?
Were the staggered fins on the Cheney JBR machined off or snapped off leaving rough edges at the roots? Did cheney stamp his own engine numbers on the crankcase?
Cheers
by neil
Thu Mar 31, 2011 3:21 pm
Forum: Videos
Topic: 67 B44 first ride
Replies: 4
Views: 3747

Re: 67 B44 first ride

Thanks lads.
The track is in Fife. It is a bit ripped up at parts giving the old BSA suspension a hard time. That part shown on the video is about the best section.
Cheers
by neil
Thu Mar 31, 2011 9:18 am
Forum: Project bikes
Topic: 1967 B44 Scrambler
Replies: 11
Views: 5804

Re: 1967 B44 Scrambler

The side panels were bought through Ebay a while ago. There is a pair for sale right now on Ebay. Brackets were welded to the frame and the side panels fixed by screws. Very easy to to do. The oil tank is from a B25 and is fixed further into the frame to allow the side panel to fit better. The seat ...
by neil
Tue Mar 29, 2011 3:31 pm
Forum: Project bikes
Topic: 1967 B44 Scrambler
Replies: 11
Views: 5804

Re: 1967 B44 Scrambler

Thanks lads, Great idea Kommando. Really got me thinking. Possibly the fitting of only one emulator might not cope with scrambling? Wondering if I could make a pair of damper tubes similar to the Japanese type and fit the emulators with internal springs? I have used Heiden tuning in the past and fou...
by neil
Sun Mar 27, 2011 4:20 pm
Forum: Project bikes
Topic: 1967 B44 Scrambler
Replies: 11
Views: 5804

Re: 1967 B44 Scrambler

Finished at last although a year late! I have also uploaded a video showing it on its first outing last week. I'm quite chuffed with it although will have to sort out the front suspension as it quite harsh and bottoms out. I tried using 20 weight oil but this resulted in the seals leaking badly. I h...
by neil
Sat Mar 26, 2011 10:01 pm
Forum: Videos
Topic: 67 B44 first ride
Replies: 4
Views: 3747

67 B44 first ride

http://www.youtube.com/watch?v=rSldvqZUsZw

Hello all,
Finally got the bike finished and took it for a run round a local track. Front suspension bottoms out very easily. Would like to find out how these forks can be improved as I don't want to fit betor/ ceriani type.
by neil
Sat Jan 23, 2010 12:16 am
Forum: Tech
Topic: No oil to rockers
Replies: 10
Views: 3531

Re: No oil to rockers

Hello all, Removed the timing side casing and by measuring reckoned approx 1mm of seal contact on the quill. I then applied marking blue to the lip on the seal and refitted the casing. Found that there was just a trace on the quill right at the very end which also has a slight chamfer. Fitted a new ...
by neil
Wed Jan 20, 2010 9:43 am
Forum: Tech
Topic: No oil to rockers
Replies: 10
Views: 3531

Re: No oil to rockers

Ed, You have got me thinking about that seal. You could be on the money. I do remember at the time of trial fitting the casing without the gearbox thinking that the quill did not go into the seal very far but thought that this was normal. I'll strip the engine and check everything. I suppose that if...
by neil
Wed Jan 20, 2010 12:45 am
Forum: Tech
Topic: No oil to rockers
Replies: 10
Views: 3531

Re: No oil to rockers

Thanks for your input lads. Mark, I'm talking about the ball in the relief valve. Kommando, the oilways were checked . I fitted a new ball in the NRV and gave it a light tap to seat it. I'm thinking that a back pressure would have to be created to push the oil up the rocker feed hose and is possibly...
by neil
Tue Jan 19, 2010 10:52 pm
Forum: Tech
Topic: No oil to rockers
Replies: 10
Views: 3531

No oil to rockers

Hello all, The B44 burst into life tonight albeit only for a short while due to a lack of oil to the rockers. (I thought it wise to stop the engine) I have fitted a late B25 inner timing case and a rocker feed from PES tapped into oil pressure switch port but unfortunately there is no sign of any oi...
by neil
Sun Jan 17, 2010 2:35 pm
Forum: Project bikes
Topic: 1967 B44 Scrambler
Replies: 11
Views: 5804

1967 B44 Scrambler

Here is my B44 scrambler. I know that it is quite ordinary but I will make my debut on this machine in a classic scramble race in April hopefully. I still have a few things to do but I'm nearly there. I haven't started it yet as I broke the kickstart lever after a couple of kicks due to a poor weld ...
by neil
Sat Jan 16, 2010 11:50 am
Forum: Tech
Topic: B44 rear shock length
Replies: 2
Views: 1608

B44 rear shock length

Hello all, I have a B44 scrambler with the older B25 frame and the stardard BSA damper rod style forks,(same length as GP Victor I believe) 21" front wheel 18" rear. I have extended the swinging arm by 1 1/2", maybe I should have extended a wee bit more. I can't decide on the length of the rear shoc...
by neil
Sun Aug 09, 2009 9:37 pm
Forum: Project bikes
Topic: BSA Fork width
Replies: 3
Views: 2800

Re: BSA Fork width

Earlier ones B31, Gold Star are 6 3/4".
by neil
Sun Aug 09, 2009 6:40 pm
Forum: Project bikes
Topic: BSA Fork width
Replies: 3
Views: 2800

BSA Fork width

Hello chaps, I've just fitted the BSA B44 old type forks into the yokes and fitted a 21"front rim using the original 7" hub and a 80 x 100 x 21 tyre. Now. There is very little clearance between the forks for the tyre. The distance between the fork centre's is 6 1/4". I built a Tribsa scrambler using...
by neil
Sat May 23, 2009 2:26 pm
Forum: Tech
Topic: B44 Barrel sleeve/liner
Replies: 2
Views: 1518

Re: B44 Barrel sleeve/liner

Having a gap of 0.042" between the head and the barrel, the 0.050" would be correct.
N
by neil
Sat May 23, 2009 1:06 pm
Forum: Tech
Topic: B44 Barrel sleeve/liner
Replies: 2
Views: 1518

B44 Barrel sleeve/liner

I'm in the process of rebuilding this engine and I've just measured the height of the liner protruding above the top of the barrel and get .0155" at the front and 0.142" at the back, something not right there. What would be the correct spigot height of a standard B44 round barrel liner. Also as ment...
by neil
Fri May 22, 2009 10:38 pm
Forum: Tech
Topic: Barrel Studs
Replies: 2
Views: 1219

Barrel Studs

I've encountered a problem with the fitting of the barrel to my B44. When the barrel is fully entered into the mouth of the crankcase I had a 0.035" gap onthe mating faces opposite the push rod tunnel. Checked the faces and turned out fine. Fault traced to the studs, either the tapped holes in the c...
by neil
Fri May 15, 2009 12:49 pm
Forum: Tech
Topic: Frozen spark plug
Replies: 9
Views: 3054

Re: Frozen spark plug

Heat, patience and plus gas/WD40.
N
by neil
Fri May 15, 2009 9:08 am
Forum: Tech
Topic: Ring gap
Replies: 1
Views: 1002

Ring gap

Hello chaps,
What is the correct ring gap for new rings in a B44. One book states 0.006" and another 0.016"minmum.
Cheers
N
by neil
Sat May 09, 2009 6:50 pm
Forum: Tech
Topic: Who's Pointless Battery Problem
Replies: 13
Views: 3350

Re: Points or Electronic ignition

Boyer or Pazon for the B44 lads?
N
by neil
Thu May 07, 2009 7:48 pm
Forum: Tech
Topic: B44 Grunt
Replies: 5
Views: 2367

Re: B44 Grunt

Don't want to spend loads of money. I have to sell my KTM 450SX to fill the coffers.This mod seems like it might be worthwhile and would allow me to use the parts that I already have. Would this be ok with unleaded petrol?
N
by neil
Wed May 06, 2009 7:38 pm
Forum: Tech
Topic: B44 Grunt
Replies: 5
Views: 2367

B44 Grunt

I have been looking back over previous post and saw one regarding gaining more midrange power on the B44 by Ed V. This involves removing.115" from the base of the barell. Has anybody tried this? ( no offence Ed) Also, do you normally fit a base gasket?
Cheers,
Neil
by neil
Tue Apr 28, 2009 6:54 pm
Forum: Tech
Topic: Raising The Compression Ratio on a C15
Replies: 10
Views: 3234

Re: Raising The Compression Ratio on a C15

Was told by a bloke at the week end that he had fitted a trident piston and machined deeper valve pockets and was using dope. Possibly you would benefit from the C15SS head with the bigger inlet valve as well. Been 2 years since I posted. Sure doesn't feel like that long! Decided to pull out the B44...
by neil
Wed Mar 28, 2007 7:41 pm
Forum: Off topic
Topic: 1960's MX
Replies: 1
Views: 1472

1960's MX

by neil
Thu Mar 22, 2007 11:55 pm
Forum: Tech
Topic: B50 Clutch hub
Replies: 2
Views: 1525

Thanks for the info Anders. I have just read my original message and it has a typing error. Well done for understanding what I was asking for.

Cheers,
Neil