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Messages - hoogerbooger

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1
Singles / Re: B40 Star air filter - what's the best option now
« on: 21 February, 2018, 16:45:48 »
no I just have the actual air filter wire gauze and not the perforated metal concave gauze cover ( photo attached from some American site of whatI don't have  & that's a copy) But  sounds like that can catch up later.

I've just checked on the standard air hose part 40-7835. Apparently it measures approx 44mm OD and 35mm ID. Whereas the concentric inlet is 43mm and air filter outlet is 39mm. Anyone know if this hose is likely to be flexible enough to go over 43mm. ( heat it up in boiling water first ?) 

( for info I measured wrong before,  in that the aperture in the tool box for the hose to go through is actually 2" (50mm))

( My 1965 B40F is not fully original spec with some B25 and other parts, but I'm trying to keep it looking in the right ball park - photo attached for other B40F owners interest)

2
Singles / Re: B40 Star air filter - what's the best option now
« on: 20 February, 2018, 22:00:17 »
Blimey 3 blobs of braze can be tenacious. One hour with a small file and junior hack saw later  & I have the attached .....now with 10mm of outlet to attach to. ( no dremel available unfortunately)

AWJDThumper: Thank you for both suggestions which look sound. I will investigate both.

I presume it would also be sensible to see if I can fabricate an equivalent to the gauze cover ?  Looks like it was 50% metal 50% perforation. I'm guessing if I do that so that the air filter is as close as possible to the original set-up....... then I can probably use the the 'original main jet size of 140



3
Singles / Re: B40 Star air filter - what's the best option now
« on: 19 February, 2018, 16:46:32 »
I have an air filter now (pic attached) .... but looks like it's not as originally fitted. I have a 1965 B40F and the aperture through to the tool box is indeed 1 7/8 inches. So looks like it never had an attached air filter originally & it was the separate type .

So need to consider if I can use what I have & how. The outlet from the air filter is 1 1/2 inches (38mm) The protruding part of the outlet tube extends only about 5mm from the tool box plate.  Not much to clamp against. The concentric carb inlet is 43mm threaded.  So how did the rubber connector work ? It must have gone over the carb inlet but did it did it go over or within the air filter outlet ? Was it jammed in or over or were clips used to hold in place ( none shown on parts diagrams)

If  the same arrangement was used on earlier B40's and C15's I'm presuming I have something that can be used and allow enough air flow .....If I work out how it should be fitted ?


(may be easier to detach  and use as a separate if I can borrow a dremel)

4
Singles / Re: B40 Star air filter - what's the best option now
« on: 15 February, 2018, 21:50:33 »
Thanks for picture. Very helpful. Draganfly say it's from a B40, but I guess  I'll find out for sure when it arrives. Seems they had two but this was the last one.  fingers crossed.

5
Singles / Re: B40 Star air filter - what's the best option now
« on: 15 February, 2018, 10:58:19 »
I have just been emailed by Draganfly Motorcyles to say they had a coupled of used cover plates with the attached air filter unit in stock. Have ordered one. Am very happy !

( so if anyone else needs one ? they know where to go)

Thank you to all for the advice. I wouldn't have known what I was looking for without it !

6
Singles / Re: B40 Star air filter - what's the best option now
« on: 14 February, 2018, 18:10:11 »
I'm struggling to find a solution.

To fit a cone filter inside the "tool box" the filter would need to be no more than 6cm long and 8cm diameter to avoid the battery, frame tube & battery holder. This seems small. Ont internet it usually doesn't have both dimension. If anyone knows a make of that size please let e know.

Similarly the frame, battery holder & battery, prevent a pancake filter being fitted inside the "toolbox" in it's conventional orientation. If I could find a suitable connection hose with a 90 degree bend and an offset pancake filter that is a maximum of 12cm diameter by 6cm depth, then I may be able to use the space inside the "tool box" cover. The ones I've found dimensions for are bigger in diameter. To fit them I'd have to remove or shorten the tab inside the tool box cover that I presume held the tool roll. I don't really want to do that, except as a last resort. In any case it would still need to be circa 6cm deep or less.  If anyone has fitted a pancake filter inside the tool box on a B40/C15 advice/photo appreciated.

Alternatively I could try bodging up a replacement filter housing as I have the gauze, rubber ring ( that it seems to go in) and the circlip. Bess provides the parts diagram on this thread. I found pictures of the outer perforated cover that appears to be 50/50 hole to metal. I can make that. But I can't see from the diagram how the gauze sits within the housing & how much much space is left either side of the gauze to allow the appropriate air flow. If anyone can provide some pictures or provide some indications to assist it would be much appreciated.

( A full detached  original air filter housing was on ebay before Christmas. it went for 12 ish & I bloomin missed it because I'm rubbish at that sort of thing and it locked me out when I tried to bid last moment .... V annoying didn't talk for a day or two.....which pleased some but annoyed my better half ! - I'm sure there's a 3D printing project here for someone who's clever like that)


7
Singles / Re: B40 star best set up for wrong carburetor
« on: 13 February, 2018, 22:19:59 »
Can I double check. Are you saying the Norton spray tube and the 3.5 throttle slide won't make much difference and it should be possible to set up? (They being the main reason I was thinking a new carb was needed)

( I note your comments about needle and jets. cheap enough just to change.)

8
Singles / Re: B40 star best set up for wrong carburetor
« on: 08 February, 2018, 18:30:09 »
Many Thanks. New Carb needed then.

9
Singles / Re: B40 star best set up for wrong carburetor
« on: 04 February, 2018, 11:07:02 »
I've taken my carb apart to check how its set up & it's not as Dave Smith had recommended. The carb doesn't seem that worn. Some light lines on barrel and slide but only one I can feel with the finger nail. Slide seems a snug fit to the barrel and hardly any no lateral  movement.

Q1: Dumb question :  Are all 626 slides the same diameter ? Having stared at diagrams and looked at  spare parts on-line I still can't work out if the choke size is the bore of the carb barrel/ slide diameter ? Slides are listed as 626 slides without choke size. On mine the barrel diameter as far as my bad eyes and ruler measure is more than  27mm.

Q2: Dumb question:  Is the spray tube changeable or not? cos I have a Norton with the square bite out of it !

Q3: less dumb question: I'm thinking it may be sensible just to get a new 626 premium carb more guaranteed  function, fuel effeciency & resistance to modern fuel. I've provided the set-up as apparently fitted to the Australian WD B40s . I'm not sure if this set-up is best for my Star as i.e I haven't managed to find out whether the air filter used on the WD then or the fuel octane may have affected the set-up ? Anyone know whether they used a gauze air filter similar to the B40 star?.  Any one clever enough to tell me what the best ( starting) set-up would be for a 626 for a) an original gauze filter b) paper filter ?

 !!! this was a nice table table in word:

Dave Smith Recommedation   What I have 627/428      Amal Website -1967 Australian WD B40

Choke size         27mm               27mm                       26mm
Main Jet            140                   140                           130
Pilot Jet             20                     20                             20
Needle Position  3            1? ( i's on the top ring)          2
Throttle Slide     3                       3.5                            3
needle                            U ( no other markings/rings)
Needle jet          0.106                0.106                          0.106
Spray tube                                 Norton                        ? 4 stroke presumably

p.s. Also No O-ring or O-ring grove on flange of my 627






10
Singles / Re: Choke
« on: 29 January, 2018, 19:47:47 »
Just to note that my Concentric is a 627  - so set up will differ.

just tried recheking where I got the 626 reference .The BSA 1965 service sheets indicate a monobloc 376 was fitted.

found this should it be of use:
http://www.classic-bike-shop.com/carburettor-for-bsa--b40-australian-wd-1967-71-1711-p.asp
but not sure if the set up listed is specifically suitable to the australian bike  rather than Uk B40F model

[Whilst not what was fitted, does the concentric have functional advantages over a monobloc ? Just wondering  whether I get a new concentric should mine prove not sensible to repair  - I note they are cheaper !]

11
Singles / Re: B40 star best set up for wrong carburetor
« on: 28 January, 2018, 19:34:42 »
Tickling: even with the perforated cap on it wouldn't start easily in the cold.... unless I warmed it with the hot air gun !

Air Slide: Can't remember if internals allowed for an air slide ...... should it ? ( I'll have a look) but the cap has no hole for a air cable. So may be a case of take apart check for wear  & if barrel ok order parts worn or missing ?

12
Singles / Re: B40 star best set up for wrong carburetor
« on: 28 January, 2018, 17:25:04 »
The 627 concentric has no air slide ( or at least the one I have doesn't). Previously I bodged a choke for start up with a perforated cap -  I had no air filter attached- just removed cap when warm.

Is there any off the shelf or tidy bodge to fit an air filter with a choke ability ? 

[I could just buy the  the right carb and an air lever/cable, but if I can reuse what I have i'd prefer to  if there is a sensible fix ?]

 


13
Singles / B40 star best set up for wrong carburetor
« on: 12 November, 2017, 18:55:53 »
My 1965 B40 has a Amal 627 (428) concentric carb. 20 years ago Dave Smith of BSAOC said its from a Trident but is ok and recommended the set up as:

Main Jet: 140
Pilot jet: 20
Slide 3
Needle position 2
Needle jet .106

( I don't actually know how its set up)

I notice that the concentric that was fitted on some later B40's was a 626. So was Dave Smith right that my 627 as set up above should be fine. ?

I am presuming after 18 years of doing nothing in a garage I'll probably need to check/clean/service it. I did take it apart once but only checked if for crud & cleaned jets ( oh yes then had to emery the flange flat that my make over tightened).

I will see if I can the bike going, but would be useful to know if the 627 should be ok.

Ta



14
Singles / Re: B40 Star air filter - what's the best option now
« on: 10 November, 2017, 19:10:06 »
Bess

yes like that. I hadn't even realised it was integral with the air filter mounting plate (obviously come off on mine under previous owners). The one shown on the link seems to have gone. So will need to carry on looking.

15
Singles / Re: B40 Star air filter - what's the best option now
« on: 09 November, 2017, 19:05:47 »
Thanks both for comments.

Bess, thanks for your link. Not sure how I missed that - as I went to the site. I actually have the gauze, the rubber  ring that that goes round it, the circlip....... but not the housing (that from the diagram I've seen) it fits within.    If anyone has a spare one or happens to see one at an auto jumble let me know !

Will have to take the suggestions and for the time being rig up something in the tool box area so that it looks right.

Kind Regards

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