1955 Huntmaster questions

Singles, twins and fours.
john.whiting
Holder of a Golden Anorak
Holder of a Golden Anorak
Posts: 1707
Joined: Sun May 22, 2011 2:10 pm
Location: Brisbane QLD
Contact:

Re: 1955 Huntmaster questions

Postby john.whiting » Wed Sep 02, 2020 12:37 am

Ive found with Nortons ,that are notably incontinent,best policy is to drain the oiltank after a run ,and store the oil in a plastic 2l bottle...........you will be amazed how much black sediment settles out........and there will never be a flood of oil on the floor....................I know what is going to be said .....but I never ,ever, start any bike without checking the oil tank,or sump for level.

Simon.Gardiner
Holder of a Golden Anorak
Holder of a Golden Anorak
Posts: 1089
Joined: Tue Aug 02, 2011 11:37 pm
Location: South West (Bristol-ish)
Contact:

Re: 1955 Huntmaster questions

Postby Simon.Gardiner » Wed Sep 02, 2020 1:14 am

I've never felt the need for an extra non-return tap on an A10 or a Huntmaster, and I don't know of anyone 'around here' who's using one in a 650.
As Will says, there is an inbuilt ball valve in the oil feed (in the crankcases, behind the oil pump). However, you can't easily check/clean it without a total engine strip, and I do know of some instances where folks have had bikes that did drain excessive amounts of oil into the sump (but in my experience that is the exception, not the rule).

HTH

SG
'55 Huntmaster, '56 VH, ' 51 VH, '80 R100RT, '00 Sprint ST (but all those Ariel parts can only make one running bike...)

Mick D
Holder of a Waxed Cotton Anorak
Holder of a Waxed Cotton Anorak
Posts: 342
Joined: Tue Nov 27, 2018 2:49 pm
Contact:

Re: 1955 Huntmaster questions

Postby Mick D » Wed Sep 02, 2020 6:59 am

Hi

To my knowledge there's no specific anti wet sumping valve on an FH, not wet sumping relies on the integrity of the oil pump.
There are two ball valves in the engine: one is the pressure relief valve, the other the sump return check valve - neither of which function to inhibit wet sumping.
In my opinion, the type and configuration of oil pipes on an FH does not lend itself to the unobtrusive installation of a valve:

Oil Lines.png
Oil Lines.png (204.78 KiB) Viewed 300 times


I try to ride my bikes at least once a month but if weather is against me I start and run them until up to temperature

Regards Mick

Simon.Gardiner
Holder of a Golden Anorak
Holder of a Golden Anorak
Posts: 1089
Joined: Tue Aug 02, 2011 11:37 pm
Location: South West (Bristol-ish)
Contact:

Re: 1955 Huntmaster questions

Postby Simon.Gardiner » Wed Sep 02, 2020 9:33 am

Mick D wrote:
To my knowledge there's no specific anti wet sumping valve on an FH, not wet sumping relies on the integrity of the oil pump.
There are two ball valves in the engine: one is the pressure relief valve, the other the sump return check valve - neither of which function to inhibit wet sumping.


Noooooooo - there are three valves!! Look carefully for the position of the 'anti-syphon valve' behind the oil pump!
(I know it's a diagram for an A10 - Huntmaster is the same.)

SG
Attachments
a10bsa_oilflow.JPG
'55 Huntmaster, '56 VH, ' 51 VH, '80 R100RT, '00 Sprint ST (but all those Ariel parts can only make one running bike...)

Mick D
Holder of a Waxed Cotton Anorak
Holder of a Waxed Cotton Anorak
Posts: 342
Joined: Tue Nov 27, 2018 2:49 pm
Contact:

Re: 1955 Huntmaster questions

Postby Mick D » Wed Sep 02, 2020 12:25 pm

Thanks Simon - Every day is a school day :oops: :oops:

I guess this is the access to it:

Anti Syphon.png
Anti Syphon.png (231.61 KiB) Viewed 285 times


Regards and sorry for any confusion caused - Mick

Simon.Gardiner
Holder of a Golden Anorak
Holder of a Golden Anorak
Posts: 1089
Joined: Tue Aug 02, 2011 11:37 pm
Location: South West (Bristol-ish)
Contact:

Re: 1955 Huntmaster questions

Postby Simon.Gardiner » Wed Sep 02, 2020 12:43 pm

Spotted!! And that pic shows exactly why it's not easy to 'service'!

SG
'55 Huntmaster, '56 VH, ' 51 VH, '80 R100RT, '00 Sprint ST (but all those Ariel parts can only make one running bike...)

david weare
Posts: 56
Joined: Fri May 29, 2015 3:30 pm
Contact:

Re: 1955 Huntmaster questions

Postby david weare » Thu Sep 03, 2020 10:40 pm

Hi Will
Thanks for the advice.
I have heard horror stories of people forgetting to turn in line taps on.
That would be me.
D

will_curry wrote:There should be one already built-in but they're not always that effective.
However, it's been a long time and I can't remember how to get to it.

I'm not a great fan of add-on non-return valves. If anything goes wrong
it's a wrecked engine. A friend of mine had one fail on a Matchless
twin - not a pretty sight and extremely expensive.

The best way to keep the oil where it belongs is to use the bike frequently.

There are a number of Huntmaster users who regularly contribute to this
forum. Hopefully one or more will be along soon.

david weare
Posts: 56
Joined: Fri May 29, 2015 3:30 pm
Contact:

Re: 1955 Huntmaster questions

Postby david weare » Thu Sep 03, 2020 10:42 pm

Thanks Simon.
OK, I don't mind a little bit of oil deposit.
May treat myself to a tea tray and bungee on the parcel rack
D

Simon.Gardiner wrote:I've never felt the need for an extra non-return tap on an A10 or a Huntmaster, and I don't know of anyone 'around here' who's using one in a 650.
As Will says, there is an inbuilt ball valve in the oil feed (in the crankcases, behind the oil pump). However, you can't easily check/clean it without a total engine strip, and I do know of some instances where folks have had bikes that did drain excessive amounts of oil into the sump (but in my experience that is the exception, not the rule).

HTH

SG

david weare
Posts: 56
Joined: Fri May 29, 2015 3:30 pm
Contact:

Re: 1955 Huntmaster questions

Postby david weare » Thu Sep 03, 2020 10:48 pm

Thanks Simon
I'll see how I go with the orginal ball valve.
David


Simon.Gardiner wrote:I've never felt the need for an extra non-return tap on an A10 or a Huntmaster, and I don't know of anyone 'around here' who's using one in a 650.
As Will says, there is an inbuilt ball valve in the oil feed (in the crankcases, behind the oil pump). However, you can't easily check/clean it without a total engine strip, and I do know of some instances where folks have had bikes that did drain excessive amounts of oil into the sump (but in my experience that is the exception, not the rule).

HTH

SG

john.mitchell
Holder of a Silver Anorak
Holder of a Silver Anorak
Posts: 607
Joined: Tue Feb 15, 2011 10:47 am
Location: Forest of Dean
Contact:

Re: 1955 Huntmaster questions

Postby john.mitchell » Fri Sep 04, 2020 12:41 pm

My FH always eventually wet sumps. Years ago I put a thread in the bottom of the sump plate so a bolt could screw in. - It is a lot easier to drain surplus oil that way.
John Mitchell
Editor Cheval de Fer


Return to “Four stroke”

Who is online

Users browsing this forum: Majestic-12 [Bot] and 13 guests