BritBike Forum logo
BritBike Sponsor BritBike Sponsor BritBike Sponsor
BritBike Sponsor

BritBike Sponsor

BritBike Sponsor
BritBike Sponsor BritBike Sponsor BritBike Sponsor
JWood Auctions JRC Engineering dealers JWood Auctions
Home | Sponsors, Newsletter | Regalia | Calendar | Bike Project | BritBike Museum | Spiders Cartoons, "OLD" BritBike Forum | DVD- Manuals & Parts books | BritBike Stickers & Decals
Upgrade to: Premium Membership | Premium Life Membership | Vendor Membership | Site Sponsor Membership
Member Spotlight
furymalc
furymalc
northern B.C.Canada
Posts: 127
Joined: February 2012
Show All Member Profiles 
Shout Box
Search eBay for motorcycle parts in following countries
Australia, Canada, France, Holland, Italy, United Kingdom, USA
Random Gallery photo
Who's Online Now
27 registered members (AngloBike), 307 guests, and 390 spiders.
Key: Admin, Global Mod, Mod
Newest Members
Gregg's Atv, T160vUK, Dadstoys, Carlo D'Angelo, butcherboy
10443 Registered Users
Top Posters(30 Days)
NickL 68
franko 60
Popular Topics(Views)
730,122 mail-order LSR
Forum Statistics
Forums34
Topics68,538
Posts667,373
Members10,443
Most Online3,995
Feb 13th, 2017
Like BritBike.com on Facebook

Previous Thread
Next Thread
Print Thread
Rate Thread
Page 1 of 2 1 2
A65 Cast Iron Oil Pump ? #740387
07/01/18 11:05 am
07/01/18 11:05 am
Joined: Dec 2017
Posts: 211
England
F
ferretjuggler Offline OP
BritBike Forum member
ferretjuggler  Offline OP
BritBike Forum member
F

Joined: Dec 2017
Posts: 211
England
Would it be possible to manufacture one ?
I have a tame model engineer with a small lathe in his shed, and possibly access to other machine tools.
I don't mean making a new shaft or gears, but simply replicating the distortion prone mazak casing parts with cast iron ones.
After seeing an unknown condition late cast iron pump sell on eBay for over £300 I'm not inclined to go chasing after used ones.
Obviously someone is going to tell me to buy a SRM pump.
Please don't.
I will never allow anything from SRM inside my engine, I simply don't trust their stuff.
A nice new standard spec iron body pump would be a very desirable thing to have IMHO.
Any good reason why it can't be done ?

Support your #1 BSA Forum and our favorite sponsors

Check out BSA on e-bay: BSA Parts in UK, BSA Motorcycles in UK, BSA Parts in North America, BSA Motorcycles in North America

 
Re: A65 Cast Iron Oil Pump ? [Re: ferretjuggler] #740392
07/01/18 1:12 pm
07/01/18 1:12 pm
Joined: Oct 2006
Posts: 2,898
Elburn, Ill. USA
I
Irish Swede Offline
BritBike Forum member
Irish Swede  Offline
BritBike Forum member
I

Joined: Oct 2006
Posts: 2,898
Elburn, Ill. USA
My Dad was a machinist.
He always said: "What one man can make, another man can duplicate."

If you have one in your hand, you have the model to make another, so long as you have the means to do it.

Re: A65 Cast Iron Oil Pump ? [Re: ferretjuggler] #740399
07/01/18 1:47 pm
07/01/18 1:47 pm
Joined: Sep 2004
Posts: 877
Farnham, Surrey, UK
gunner Offline
BritBike Forum member
gunner  Offline
BritBike Forum member

Joined: Sep 2004
Posts: 877
Farnham, Surrey, UK
If you have the right tooling and skills available then I would give it a go, it doesn't appear that complicated though accuracy will be vital.

You will need to find the clearance between the gears and pump body and this will be a vital measurement to carry over to the new pump.

Also don't forget that the later alloy "DD" pumps were better than the original alloy pumps. A number of improvements were added over the years including larger gears and dowel locating pins. If youre going to transfer the gears from an alloy pump to the new then best to use a "DD" pump as the source.

Theres a good article on A65 pump evolution Here



1968 A65 Firebird
1967 B44 Shooting Star
1972 Norton Commando
Re: A65 Cast Iron Oil Pump ? [Re: ferretjuggler] #740412
07/01/18 4:56 pm
07/01/18 4:56 pm
Joined: Dec 2017
Posts: 211
England
F
ferretjuggler Offline OP
BritBike Forum member
ferretjuggler  Offline OP
BritBike Forum member
F

Joined: Dec 2017
Posts: 211
England
Thanks for the link.
Most useful.
I wonder if there are any NOS gears and shafts available for the DD type pumps ?
Probably too much to hope for (or available at absolutely extortionate prices)
New rotating parts would make building a "brand new " quality pump that much easier, and remove the need for measuring used parts and grading them for wear.

Re: A65 Cast Iron Oil Pump ? [Re: ferretjuggler] #740418
07/01/18 5:35 pm
07/01/18 5:35 pm
Joined: Sep 2004
Posts: 877
Farnham, Surrey, UK
gunner Offline
BritBike Forum member
gunner  Offline
BritBike Forum member

Joined: Sep 2004
Posts: 877
Farnham, Surrey, UK
You can get oil pump gears for Rocket 3/Trident's, see This link, so maybe these could be used as a basis for a new pump?


1968 A65 Firebird
1967 B44 Shooting Star
1972 Norton Commando
Re: A65 Cast Iron Oil Pump ? [Re: ferretjuggler] #740423
07/01/18 6:10 pm
07/01/18 6:10 pm
Joined: Aug 2001
Posts: 4,569
Owego, NY, USA
Mark Z Offline
BritBike Forum member
Mark Z  Offline
BritBike Forum member

Joined: Aug 2001
Posts: 4,569
Owego, NY, USA
How about using billet steel instead of cast iron? That is, unless you're planning to cast the parts...


Mark Z

'65(lower)/'66(upper, wheels, front end, controls)/'67(seat, exhaust, fuel tank, headlamp)/'70(frame) A65 Bitsa.
Re: A65 Cast Iron Oil Pump ? [Re: ferretjuggler] #740428
07/01/18 6:33 pm
07/01/18 6:33 pm
Joined: Aug 2001
Posts: 4,177
argyll. scotland, uk
gavin eisler Online content
BritBike Forum member
gavin eisler  Online Content
BritBike Forum member

Joined: Aug 2001
Posts: 4,177
argyll. scotland, uk
I asked SRM if they sold spare gears for the pumps recently, not to me they wouldnt, suppose they want you to buy a new one, they used to, bought some years ago to refresh an old pump , might be worth hunting by part number for individual bits.

just recently refreshed an iron pump, had to lap about 4 thou off the body to take up the gears endfloat. I reckon there was more wear on the gear flanks than the tips of the teeth.



71 Devimead A65 750
56 Norbsa 68 Longstroke A65
Cagiva Raptor 650
MZ TS 250
The poster formerly known as Pod
Re: A65 Cast Iron Oil Pump ? [Re: ferretjuggler] #740429
07/01/18 6:33 pm
07/01/18 6:33 pm
Joined: Dec 2017
Posts: 211
England
F
ferretjuggler Offline OP
BritBike Forum member
ferretjuggler  Offline OP
BritBike Forum member
F

Joined: Dec 2017
Posts: 211
England
I was actually under the impression that the right type of cast iron was the ideal material to make the pump body from.
I'm not planning to cast anything, AFAIK machining is the way to go.

Re: A65 Cast Iron Oil Pump ? [Re: ferretjuggler] #740453
07/01/18 10:09 pm
07/01/18 10:09 pm
Joined: Aug 2001
Posts: 4,569
Owego, NY, USA
Mark Z Offline
BritBike Forum member
Mark Z  Offline
BritBike Forum member

Joined: Aug 2001
Posts: 4,569
Owego, NY, USA
Originally Posted by ferretjuggler
I was actually under the impression that the right type of cast iron was the ideal material to make the pump body from.
I'm not planning to cast anything, AFAIK machining is the way to go.


Yeah I was assuming casting and then machining, if you were going to cast.

I don't know enough about metallurgy or machining to say what would be the best material for this; I just figured a block of steel would be more of a "known entity" in terms of consistent composition.






Mark Z

'65(lower)/'66(upper, wheels, front end, controls)/'67(seat, exhaust, fuel tank, headlamp)/'70(frame) A65 Bitsa.
Re: A65 Cast Iron Oil Pump ? [Re: ferretjuggler] #740456
07/01/18 10:42 pm
07/01/18 10:42 pm
Joined: Jan 2014
Posts: 4,080
Aus
N
NickL Offline
BritBike Forum member
NickL  Offline
BritBike Forum member
N

Joined: Jan 2014
Posts: 4,080
Aus
Several people over the years have manufactured iron oil pumps for the a65. I bought one in about 1992
from MCS in Leytonstone, he used to have them made using the standard gears. Machining the iron blocks
would need more than a lathe though, you would need a mill at least and some quite good tooling as well.
A surface grinder and a hone would be good as well. Then, once you have that lot, you need to learn how to use it........
The monkey metal D and DD types are OK if you spend the time rebuilding them properly, it's just time,
patience and a square and flat plate. I have never needed to scrap a late a65 pump because it wouldn't pump well.

I can get new pump gears in limited quantity from a source here, he bought some from the 'states.

Last edited by NickL; 07/01/18 10:45 pm.

No-one expects the Spanish Inquisition................
Bring in the 'Comfy Chair'
Re: A65 Cast Iron Oil Pump ? [Re: ferretjuggler] #740635
07/03/18 3:59 pm
07/03/18 3:59 pm
Joined: Dec 2003
Posts: 116
Pittsburgh,Pa.
R
Redd32 Offline
BritBike Forum member
Redd32  Offline
BritBike Forum member
R

Joined: Dec 2003
Posts: 116
Pittsburgh,Pa.
How about machining the pump body out of bronze? Dissimilar metals work well together. That is why cast iron.

Re: A65 Cast Iron Oil Pump ? [Re: ferretjuggler] #740672
07/03/18 11:31 pm
07/03/18 11:31 pm
Joined: Jan 2014
Posts: 4,080
Aus
N
NickL Offline
BritBike Forum member
NickL  Offline
BritBike Forum member
N

Joined: Jan 2014
Posts: 4,080
Aus
One or more of the 400 types of bronze would probably be fine.
SRM use Aluminium, that's fine, Dural would probably be fine as well.
Cryptonite would probably be ok as well as would Plutonium.


No-one expects the Spanish Inquisition................
Bring in the 'Comfy Chair'
Re: A65 Cast Iron Oil Pump ? [Re: gavin eisler] #740674
07/03/18 11:44 pm
07/03/18 11:44 pm
Joined: Jan 2014
Posts: 4,080
Aus
N
NickL Offline
BritBike Forum member
NickL  Offline
BritBike Forum member
N

Joined: Jan 2014
Posts: 4,080
Aus
Originally Posted by gavin eisler
I asked SRM if they sold spare gears for the pumps recently, not to me they wouldnt, suppose they want you to buy a new one, they used to, bought some years ago to refresh an old pump , might be worth hunting by part number for individual bits.

just recently refreshed an iron pump, had to lap about 4 thou off the body to take up the gears endfloat. I reckon there was more wear on the gear flanks than the tips of the teeth.



There is a guy on eBay in the 'states who has new gears listed at the moment. (Dotler)


No-one expects the Spanish Inquisition................
Bring in the 'Comfy Chair'
Re: A65 Cast Iron Oil Pump ? [Re: NickL] #740675
07/03/18 11:52 pm
07/03/18 11:52 pm
Joined: Aug 2001
Posts: 5,110
Stone Creek OH USA
R
Rich B Offline

BritBike Forum member
Rich B  Offline

BritBike Forum member
R

Joined: Aug 2001
Posts: 5,110
Stone Creek OH USA
Originally Posted by NickL
There is a guy on eBay in the 'states who has new gears listed at the moment. (Dotler)


Which gears, there are several lengths. The late long gears are the best.


Never underestimate the human ability to elevate stupid to a whole new level!.
Re: A65 Cast Iron Oil Pump ? [Re: ferretjuggler] #740679
07/04/18 12:47 am
07/04/18 12:47 am
Joined: Jan 2014
Posts: 4,080
Aus
N
NickL Offline
BritBike Forum member
NickL  Offline
BritBike Forum member
N

Joined: Jan 2014
Posts: 4,080
Aus
67- 1403, 1404, 1405, 1406.



No-one expects the Spanish Inquisition................
Bring in the 'Comfy Chair'
Re: A65 Cast Iron Oil Pump ? [Re: ferretjuggler] #740710
07/04/18 9:32 am
07/04/18 9:32 am
Joined: May 2004
Posts: 3,876
Sydney Australia
B
BSA_WM20 Offline
BritBike Forum member
BSA_WM20  Offline
BritBike Forum member
B

Joined: May 2004
Posts: 3,876
Sydney Australia
Originally Posted by ferretjuggler
Would it be possible to manufacture one ?
I have a tame model engineer with a small lathe in his shed, and possibly access to other machine tools.
I don't mean making a new shaft or gears, but simply replicating the distortion prone mazak casing parts with cast iron ones.
After seeing an unknown condition late cast iron pump sell on eBay for over £300 I'm not inclined to go chasing after used ones.
Obviously someone is going to tell me to buy a SRM pump.
Please don't.
I will never allow anything from SRM inside my engine, I simply don't trust their stuff.
A nice new standard spec iron body pump would be a very desirable thing to have IMHO.
Any good reason why it can't be done ?


Because Britsh bike riders in general and BSA riders in particular are way too cheap to pay enough for them for it to be a profitable exercise.
Do a little search on this site for the words BEST and CHEAPEST / CHEAPER.
The latter will bring up thousands of post while the former could be counted on your fingers.

Just about all of the people who make improved quality aftermarke BSA parts do it because they are passinate about BSA's and none of them are wealthy people.
You would probably sell 50 in the first year then 3 or 4 per annum ther after and yoour great grandkids will probably still have 1/2 of a minimum 200 order in their shed when they die.
Like most things BSA owners would much rather whinge & bitch about them than to spend a reasonable amount of money to fix them properly.
Note all the owners who bitch about the poor fit of fuel tanks they bought on eBay from India while the local makers of top quality tanks that fit perfectly are closing down due to lack of sales support.


Bike Beesa
Trevor
Re: A65 Cast Iron Oil Pump ? [Re: BSA_WM20] #740717
07/04/18 10:35 am
07/04/18 10:35 am
Joined: Aug 2014
Posts: 1,755
OZ
Triless Offline
BritBike Forum member
Triless  Offline
BritBike Forum member

Joined: Aug 2014
Posts: 1,755
OZ
And then there's the idiot who sights all your special, uprated parts going into a performance engine and states "aw, not much Triumph, BSA, Norton, etc, left now, is there !" And then, when everything clicks, and works nicely ,comments , "well, so it bloody well should all the money spent ........!"



Re: A65 Cast Iron Oil Pump ? [Re: ferretjuggler] #740719
07/04/18 11:04 am
07/04/18 11:04 am
Joined: Jan 2014
Posts: 4,080
Aus
N
NickL Offline
BritBike Forum member
NickL  Offline
BritBike Forum member
N

Joined: Jan 2014
Posts: 4,080
Aus
That's a little scathing i think, the truth of the matter is these things are only toys to most blokes.
I regard spending 20% of the bike's cost (in my case) on a replacement oil pump a trifle too much.
I still feel that if reconditioned properly the late a65 oil pumps are adequate for the engine. I have
never had to scrap one due to poor performance. Time and a little application provide a good result.
Most of the ones i have seen have been tightened up too hard and have distorted, the gears are fine,
some bodies have been badly scored due to the bike having no oil filter or having debris in the engine
when being rebuilt. Patience is the thing that's most lacking not money. I would also point out that
many expensive aftermarket parts are no better than the cheap ones, which is why people are a
bit reticent to buy the more expensive ones. Trevor's comment on things like fuel tanks may be true
but once again in my case the tank i bought from India cost less than i could have my one repainted for.
It does an adequate job and my bike is not an exhibition piece.
Many people do not regard their bike as anything other than a toy and one that should be affordable.
If they view it that way they should be prepared to either get it right when building it or live with the
alternate result. Just bolting on very well made aftermarket bits does not mean the package is any
better than it was before.

Once again, this is only my 2c. worth. (1c if i bought it from India.........)

Nick


No-one expects the Spanish Inquisition................
Bring in the 'Comfy Chair'
Re: A65 Cast Iron Oil Pump ? [Re: NickL] #740720
07/04/18 11:20 am
07/04/18 11:20 am
Joined: Aug 2014
Posts: 1,755
OZ
Triless Offline
BritBike Forum member
Triless  Offline
BritBike Forum member

Joined: Aug 2014
Posts: 1,755
OZ
Fair enough . I guess its really just a personal thing, but I've simply have always wanted to attempt something the best I can with what careful research and asking many questions to purchase the best pieces I could afford to see what I could achieve. As I say, a personal thing ! Plus, nothing wrong with giving iconoclasts a good scathing, I reckon !

Last edited by Triless; 07/04/18 11:21 am. Reason: spelling
Re: A65 Cast Iron Oil Pump ? [Re: ferretjuggler] #740721
07/04/18 11:43 am
07/04/18 11:43 am
Joined: Jan 2014
Posts: 4,080
Aus
N
NickL Offline
BritBike Forum member
NickL  Offline
BritBike Forum member
N

Joined: Jan 2014
Posts: 4,080
Aus
If i followed that practise when racing i would have gone broke in 3 months, there is no ceiling to the money one can spend.
Competing with guys who spent $30,000 a year on their engines was way out of my league and as a personal thing it would
have been contrary to the spirit of club level racing as most ended up not complying with eligibility regulations in truth.
Plus there was no better reward than beating the buggers! Knowing that you did it yourself was a huge kick.
I've said before that walking into Cosworth Engineering, placing any twin cylinder engine of the era on the counter and
saying 'make me something vaguely like this, it must win. here is an unlimited supply of cash' would be the answer and that's
probably where it'll end up.


No-one expects the Spanish Inquisition................
Bring in the 'Comfy Chair'
Re: A65 Cast Iron Oil Pump ? [Re: NickL] #740722
07/04/18 12:09 pm
07/04/18 12:09 pm
Joined: Aug 2014
Posts: 1,755
OZ
Triless Offline
BritBike Forum member
Triless  Offline
BritBike Forum member

Joined: Aug 2014
Posts: 1,755
OZ
Ah, well, I do all my assembly work, but I can assure you I do as much as I can with other stuff. Like many, I've sweated blood just to do something special for no other reason that I want to do it ! For myself. A final fling at 66 !
Oh, and Nick, although I was never in top class, many years ago I did know what it was like to compete ( only club level ) but on a very tight budget . Wouldn't have missed it for quids, though !

Last edited by Triless; 07/04/18 12:13 pm.
Re: A65 Cast Iron Oil Pump ? [Re: ferretjuggler] #740723
07/04/18 12:23 pm
07/04/18 12:23 pm
Joined: Jan 2014
Posts: 4,080
Aus
N
NickL Offline
BritBike Forum member
NickL  Offline
BritBike Forum member
N

Joined: Jan 2014
Posts: 4,080
Aus
Stephen, i was in no way questioning your philosophy, i know how hard it is to be a 'privateer'.
I had to resort to corrillo rods etc to make inroads. Best of luck with the motor.




Also..............
Top class was a distant vision for me too.


No-one expects the Spanish Inquisition................
Bring in the 'Comfy Chair'
Re: A65 Cast Iron Oil Pump ? [Re: NickL] #740724
07/04/18 12:35 pm
07/04/18 12:35 pm
Joined: Aug 2014
Posts: 1,755
OZ
Triless Offline
BritBike Forum member
Triless  Offline
BritBike Forum member

Joined: Aug 2014
Posts: 1,755
OZ
Thanks, Nick. Although engine machining stuff I can't handle has been done, and all parts at hand, I 'm still working on the bloody frame and running gear. Can't rush this stuff, y'know !

Re: A65 Cast Iron Oil Pump ? [Re: ferretjuggler] #740754
07/04/18 6:58 pm
07/04/18 6:58 pm
Joined: Apr 2005
Posts: 1,702
Mississauga, Ontario.
A
Adam M. Offline
BritBike Forum member
Adam M.  Offline
BritBike Forum member
A

Joined: Apr 2005
Posts: 1,702
Mississauga, Ontario.
I thought about only changing part of mechanism of the pump, switching from 3 : 1 ratio to 2 : 1 ratio for a long time. Norton did the same with their pumps with a good result.
Asked about a price for such a project.
You have to invest more than a few thousand of $ without any warranty the parts would be properly machined and heat treated, if something goes wrong you are without money and with worthless parts, impossible to sell. If everything works, I was still not sure I'd be able to sell all the sets before kicking the bucket, so asked myself why bother ?
Forget about it.
This is probably the answer why nobody but SRM is making new pumps.

Re: A65 Cast Iron Oil Pump ? [Re: ferretjuggler] #740774
07/04/18 10:24 pm
07/04/18 10:24 pm
Joined: Jan 2014
Posts: 4,080
Aus
N
NickL Offline
BritBike Forum member
NickL  Offline
BritBike Forum member
N

Joined: Jan 2014
Posts: 4,080
Aus
Yes, norton did a 2 start worm gear to speed up the pump.
Once again though, if you don't rebuild the pump properly it won't do you any good,
if the joints are leaking due to the pump being bent or distorted, it'll still leak at twice the speed.


No-one expects the Spanish Inquisition................
Bring in the 'Comfy Chair'
Re: A65 Cast Iron Oil Pump ? [Re: ferretjuggler] #740843
07/05/18 4:15 pm
07/05/18 4:15 pm
Joined: Apr 2005
Posts: 1,702
Mississauga, Ontario.
A
Adam M. Offline
BritBike Forum member
Adam M.  Offline
BritBike Forum member
A

Joined: Apr 2005
Posts: 1,702
Mississauga, Ontario.
It suppose to be a solution for good pumps still not making enough pressure during a hot day on hot engine idling under traffic lights smile

Re: A65 Cast Iron Oil Pump ? [Re: ferretjuggler] #740862
07/05/18 7:32 pm
07/05/18 7:32 pm
Joined: Aug 2015
Posts: 1,289
Bolton Lancs UK
A
Andy Higham Offline
BritBike Forum member
Andy Higham  Offline
BritBike Forum member
A

Joined: Aug 2015
Posts: 1,289
Bolton Lancs UK
Is spending money on good equipment a good investment?
In a word YES, a SRM pump costs £300 how much does repair after oil pump failure cost?


BSA B31 500cc "Stargazer"
Greeves 200cc "Blue Meanie"
Greeves 350
Greeves 360 Challenger
Suzuki GSX1100 EFE "Sorcerers Apprentice"
GM500cc sprint/LSR bike "Deofol"
Jawa 500cc "Llareggub"
2003 Aprilia RSV Mille "Lo Stregone"
'35 OK Supreme
'36 OK Supreme
Re: A65 Cast Iron Oil Pump ? [Re: ferretjuggler] #740885
07/05/18 10:21 pm
07/05/18 10:21 pm
Joined: Jan 2014
Posts: 4,080
Aus
N
NickL Offline
BritBike Forum member
NickL  Offline
BritBike Forum member
N

Joined: Jan 2014
Posts: 4,080
Aus
Never having had an oil pump 'fail' or in fact never knowing anyone having an oil pump 'fail' i wouldn't know.
I've known a few blokes who have ridden around with pumps that were not much good, flickering oil lights etc, but after rebuilding them they were ok.
If spending loadsa money on good equipment is such a great idea, what are we all doing riding these old pieces of garbage?
Surely we should all be driving Bentley's or Bugatti's.


No-one expects the Spanish Inquisition................
Bring in the 'Comfy Chair'
Re: A65 Cast Iron Oil Pump ? [Re: ferretjuggler] #740948
07/06/18 12:02 pm
07/06/18 12:02 pm
Joined: May 2013
Posts: 5,076
Rotherham - S. Yorkshire
Allan Gill Offline

BritBike Forum member
Allan Gill  Offline

BritBike Forum member

Joined: May 2013
Posts: 5,076
Rotherham - S. Yorkshire
Im interested as to why the hated for the SRM pump? (somethings like the OPRV, are something I would avoid after knowing so far of 3 that have stuck) but I don't beleive they make the pumps them selves. mounting the pump properly, and to correct torque setting (7ft/lb and as this isn't a lot, I locktite my screws in position) with a well fitting gasket (most dont fit correctly) I have had no trouble what so ever with my SRM oil pump, neither has anyone else that I know of.


beerchug
Re: A65 Cast Iron Oil Pump ? [Re: ferretjuggler] #740951
07/06/18 12:23 pm
07/06/18 12:23 pm
Joined: Dec 2004
Posts: 9,593
Scotland
kommando Online content
BritBike Forum member
kommando  Online Content
BritBike Forum member

Joined: Dec 2004
Posts: 9,593
Scotland
Never had an SRM pump so cannot comment, but they had supplied 2 incorrect parts in the only 2 orders I have placed on them. Brake spindles missing the greasing holes and spokes with the wrong gauge. So not going to bother ordering again, also sort of weird for them to recommend not to fit a filter in the return line, where do they get the logic for that from.

Re: A65 Cast Iron Oil Pump ? [Re: ferretjuggler] #740979
07/06/18 8:02 pm
07/06/18 8:02 pm
Joined: Jan 2004
Posts: 3,874
ca, us
D
DMadigan Offline
BritBike Forum member
DMadigan  Offline
BritBike Forum member
D

Joined: Jan 2004
Posts: 3,874
ca, us
Changing from the 3:1 to 2:1 ratio would be expensive unless you can find stock gears that can be modified. Worm gears are not easy to make without a corn cobb hob that rotates the gear with the cutter. Spur gears can be made by a mill or broaching which is much cheaper.
There are not a lot of viable design alternatives to the stock setup due to space and mounting.
I had previously proposed making a new pump using gerotors out of a Suzuki, easy to get and far cheaper than having custom gears made. Off the shelf spur gears can be bought and modified but with enough volume (not in the 1000's) the price comes down to where the blanks can be made and the teeth broached for less.
[Linked Image]
The interest petered out so I did not go further.

Re: A65 Cast Iron Oil Pump ? [Re: Allan Gill] #740998
07/06/18 11:16 pm
07/06/18 11:16 pm
Joined: Jan 2014
Posts: 4,080
Aus
N
NickL Offline
BritBike Forum member
NickL  Offline
BritBike Forum member
N

Joined: Jan 2014
Posts: 4,080
Aus
Originally Posted by Allan Gill
Im interested as to why the hated for the SRM pump? (somethings like the OPRV, are something I would avoid after knowing so far of 3 that have stuck) but I don't beleive they make the pumps them selves. mounting the pump properly, and to correct torque setting (7ft/lb and as this isn't a lot, I locktite my screws in position) with a well fitting gasket (most dont fit correctly) I have had no trouble what so ever with my SRM oil pump, neither has anyone else that I know of.


No hatred for the SRM pump from me Allan, just questioning the need for it in a lot of cases.
All i am saying is that a well built and well fitted standard unit is fine. If an SRM pump is subjected to over tightening or being rebuilt with hermatite etc it would suffer similar faults as the standard unit.
The idea David Madigan came up with is a better way forward, although i think it would need a better relief valve setup
especially if used on an end fed engine. I would think he would have to make at least 20 off batches to get around the SRM price.


No-one expects the Spanish Inquisition................
Bring in the 'Comfy Chair'
Re: A65 Cast Iron Oil Pump ? [Re: ferretjuggler] #741009
07/07/18 1:30 am
07/07/18 1:30 am
Joined: Dec 2003
Posts: 116
Pittsburgh,Pa.
R
Redd32 Offline
BritBike Forum member
Redd32  Offline
BritBike Forum member
R

Joined: Dec 2003
Posts: 116
Pittsburgh,Pa.
I would think an end feed engine wouldn't be as critical on oil pressure? All the oil going to rod bearings.

Re: A65 Cast Iron Oil Pump ? [Re: ferretjuggler] #741031
07/07/18 8:10 am
07/07/18 8:10 am
Joined: Sep 2004
Posts: 877
Farnham, Surrey, UK
gunner Offline
BritBike Forum member
gunner  Offline
BritBike Forum member

Joined: Sep 2004
Posts: 877
Farnham, Surrey, UK
I think DMadigan's gerotor pump is an excellent design and I'm sure there would be be plenty of interest. Dave, are you planning on making a batch anytime?


1968 A65 Firebird
1967 B44 Shooting Star
1972 Norton Commando
Re: A65 Cast Iron Oil Pump ? [Re: ferretjuggler] #741034
07/07/18 9:54 am
07/07/18 9:54 am
Joined: Aug 2015
Posts: 1,289
Bolton Lancs UK
A
Andy Higham Offline
BritBike Forum member
Andy Higham  Offline
BritBike Forum member
A

Joined: Aug 2015
Posts: 1,289
Bolton Lancs UK
There would be lots of interest until wallet time.
It amazes me that people will spend thousands on paint and chrome but become tight as a fishes arse when it comes to spending money on engine components


BSA B31 500cc "Stargazer"
Greeves 200cc "Blue Meanie"
Greeves 350
Greeves 360 Challenger
Suzuki GSX1100 EFE "Sorcerers Apprentice"
GM500cc sprint/LSR bike "Deofol"
Jawa 500cc "Llareggub"
2003 Aprilia RSV Mille "Lo Stregone"
'35 OK Supreme
'36 OK Supreme
Re: A65 Cast Iron Oil Pump ? [Re: Andy Higham] #741102
07/08/18 12:47 am
07/08/18 12:47 am
Joined: May 2004
Posts: 3,876
Sydney Australia
B
BSA_WM20 Offline
BritBike Forum member
BSA_WM20  Offline
BritBike Forum member
B

Joined: May 2004
Posts: 3,876
Sydney Australia
Originally Posted by Andy Higham
Is spending money on good equipment a good investment?
In a word YES, a SRM pump costs £300 how much does repair after oil pump failure cost?


We all know that however it requires logical thinking.
We also know there is a better chance of being struck by lightning while crossing the road pushing our broken down motorcycle than winning a lottery
However most will happily fork out for a lottery ticker because it MIGHT happen to me but won't pay for the pump because it WON'T happen to me, till it does.

As I have regularly mentioned in the 30 years I have been involved with the BSa club almost no one has asked "Who makes the best or where can I get the best or eve is there a better quality"
99.9999999999999999999999999 % of the enquireies I have gotten was " Is there a Cheaper"

And if you want a confirmation then shearch this forum for the words "Better quality" &" Cheaper"
The fromer might bring up a few dozen threads and the latter will be hundreds of pages.


Bike Beesa
Trevor
Re: A65 Cast Iron Oil Pump ? [Re: ferretjuggler] #741183
07/08/18 5:55 pm
07/08/18 5:55 pm
Joined: Jan 2004
Posts: 3,874
ca, us
D
DMadigan Offline
BritBike Forum member
DMadigan  Offline
BritBike Forum member
D

Joined: Jan 2004
Posts: 3,874
ca, us
Rotors are about $30 each, stock spur gears are $15 and $20. Need to remachine the gears and make the body and shaft. A few alignment pins and mounting screws. Can be done for a lot less than 300GBP. Would need some testing of course.

Page 1 of 2 1 2

Moderated by  Allan Gill, Jon W. Whitley 


Home | Sponsors | Newsletter | Regalia | Calendar | Bike Project | BritBike Museum | Spiders Cartoons | "OLD" BritBike Forum | DVD- Manuals & Parts books | BritBike Stickers & Decals
Upgrade to: Premium Membership | Premium Life Membership | Vendor Membership | Site Sponsor Membership
Powered by UBB.threads™ PHP Forum Software 7.6.2