Search found 16 matches

by craigacc
Sun Jan 05, 2020 3:04 pm
Forum: Tech
Topic: B40 in OIF frame issues
Replies: 27
Views: 1047
Flag: Great Britain

Re: B40 in OIF frame issues

Definitely getting off topic, but enjoyable all the same! By way of an update, the smoke stops when I've been riding for a bit, but tends to be back when restarting the engine - until another few miles are ridden. A further problem has emerged, dull heavy knocking when under moderate load when the m...
by craigacc
Wed Dec 25, 2019 7:34 am
Forum: Tech
Topic: B40 in OIF frame issues
Replies: 27
Views: 1047
Flag: Great Britain

Re: B40 in OIF frame issues

Thanks all, mega helpful replies. A few points. The motor is a 1968 B40G, military model, so side points and later oil system/pump are standard, but thanks for the interesting post on the issue with the converted engine Tom. Re Jeff's post on the round BSA/Tri filters. Tried that, but the clearance ...
by craigacc
Mon Dec 23, 2019 6:44 pm
Forum: Tech
Topic: B40 in OIF frame issues
Replies: 27
Views: 1047
Flag: Great Britain

Re: B40 in OIF frame issues

I should add that it smoked badly from revolution number 1 on start up - before the oil had time to get around the motor. Oil circulation started up OK after a short while, but no difference to smoke levels.
by craigacc
Mon Dec 23, 2019 6:08 pm
Forum: Tech
Topic: B40 in OIF frame issues
Replies: 27
Views: 1047
Flag: Great Britain

B40 in OIF frame issues

Hi all, I have a B40 motor in a 1971 T25T frame. I’ve posted on this in the past and thanks to everyone who replied on some tech issues when building this combination of bike. One problem remains. How to join the carb to the air filter. The carb on the B40 sits quite far left of centre, so two acute...
by craigacc
Mon Nov 11, 2019 3:36 pm
Forum: Parts & Bikes wanted
Topic: OIF T25T/B25 oil feed from rear of frame?
Replies: 6
Views: 1366
Flag: Great Britain

Re: OIF T25T/B25 oil feed from rear of frame?

Thanks to all for your posts on this. It's appreciated.
by craigacc
Fri Sep 27, 2019 4:40 pm
Forum: Parts & Bikes wanted
Topic: OIF T25T/B25 oil feed from rear of frame?
Replies: 6
Views: 1366
Flag: Great Britain

OIF T25T/B25 oil feed from rear of frame?

Is there a part available that allows oil to be fed to the motor from the rear of the frame on an OIF? Thinking of some sort of 'gland bolt' (wrong word I know) to which an oil feed banjo and pipe can be fitted.

?????

Greetings to all.

Craig.
by craigacc
Mon Aug 12, 2019 6:04 pm
Forum: Tech
Topic: B50 registry
Replies: 69
Views: 158573
Flag: Great Britain

Re: B50 registry

Is this still active and working properly? All attempts to add my bike were rejected.
Plus the location map throws up a Google error dated 2011.

Craig.
by craigacc
Mon Aug 12, 2019 5:20 pm
Forum: Parts for sale
Topic: O.I.F parts for sale.
Replies: 4
Views: 1039
Flag: Great Britain

Re: O.I.F parts for sale.

Do you have a photo of the alloy fuel tank?
How much are you looking for?

Craig.
by craigacc
Sat Aug 10, 2019 7:13 am
Forum: Parts & Bikes wanted
Topic: OIF B25/50 electrics box bolts
Replies: 4
Views: 948
Flag: Great Britain

Re: OIF B25/50 electrics box bolts

Thanks. I think I'll be trying that solution. Now to find some tube ...
by craigacc
Mon Aug 05, 2019 5:15 pm
Forum: Parts & Bikes wanted
Topic: OIF B25/50 electrics box bolts
Replies: 4
Views: 948
Flag: Great Britain

OIF B25/50 electrics box bolts

Hi, does anyone have some of the shouldered electrics box bolts they can pass over for a fee? Part number 21-2128 I need three. No one here in the UK seems to be selling these now.

Thanks!
by craigacc
Mon Aug 05, 2019 5:09 pm
Forum: Tech
Topic: Crank end feed oil seal loose?
Replies: 2
Views: 994
Flag: Great Britain

Re: Crank end feed oil seal loose?

Thanks. I'll try some of this. Maybe I'm worrying too much - oil pressure build up on the roller big ends is low, so reducing the chance of the seal blowing out.
by craigacc
Sat Jul 27, 2019 10:31 am
Forum: Tech
Topic: Crank end feed oil seal loose?
Replies: 2
Views: 994
Flag: Great Britain

Crank end feed oil seal loose?

Hi, I'm refurbishing a WD B40 lump. This has the crank end feed oil seal pushed in with no retaining circlip in contrast with later motors that have this circlip. However, the new oil seal is a very easy push fit. I've tried fitting alterative seals from a different supplier, but the same issue aris...
by craigacc
Sat Jul 27, 2019 10:24 am
Forum: Tech
Topic: B40 and B44 motor in OIF chassis
Replies: 7
Views: 2020
Flag: Great Britain

Re: B40 and B44 motor in OIF chassis

Thanks for the replies re this. All concur with what I've discovered so far and I appreciate the input. Rear engine mounts need spacers as mentioned, I'm having these made at the mo. Plus new rear engine plates, as the much wider rear engine mount casting on the OIF motors has the bolt hole placed f...
by craigacc
Sat Jun 29, 2019 7:41 am
Forum: Tech
Topic: Locating conical hub rear wheel bearings correctly
Replies: 3
Views: 1260
Flag: Great Britain

Re: Locating conical hub rear wheel bearings correctly

That's great - thanks!

Looks to be set up about the same as mine.
by craigacc
Sun Jun 23, 2019 9:51 am
Forum: Tech
Topic: B40 and B44 motor in OIF chassis
Replies: 7
Views: 2020
Flag: Great Britain

B40 and B44 motor in OIF chassis

Hi all, I'm planning to fit an ex war department B40 motor into an OIF B25/T25T chassis. I also plan to use a B44 motor in the same chassis at a later stage. Any tips, warnings or things to take into account when doing this? I'm already aware of the need for rear engine mount spacing, as the pre OIF...
by craigacc
Sun Jun 23, 2019 9:42 am
Forum: Tech
Topic: Locating conical hub rear wheel bearings correctly
Replies: 3
Views: 1260
Flag: Great Britain

Locating conical hub rear wheel bearings correctly

Hi all, Can anyone advise on the correct depth for the sprocket side rear wheel bearing into a conical hub. My bike is an OIF chassis B25 type from 1971, but the T25T 'badge engineered' version. I'm concerned about sprocket alignment. The wheel I have has had new bearings, but these were fitted to a...