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by CylvaBirch
Wed Sep 11, 2019 2:38 pm
Forum: Four stroke
Topic: 1955 NH gearbox oil change
Replies: 12
Views: 3768

Re: 1955 NH gearbox oil change

I think it should be alright to use a bit of molyslip in the gearbox of the NH as it has a dry clutch. On bikes with a wet clutch I think it could cause clutch slip.
by CylvaBirch
Sun Sep 08, 2019 8:06 am
Forum: Four stroke
Topic: 1955 NH gearbox oil change
Replies: 12
Views: 3768

Re: 1955 NH gearbox oil change

I bought a litre of GP50 at Netley Marsh yesterday. Has anyone added a bit of molyslip to their gearbox oil? It is common practice on Moto Guzzis
The drain plug is hard to reach isn’t it?
by CylvaBirch
Fri Sep 06, 2019 8:47 am
Forum: Four stroke
Topic: 1955 NH gearbox oil change
Replies: 12
Views: 3768

Re: 1955 NH gearbox oil change

My old owners handbook says to use Wakefield XXL which is Castrol XXL. That is a straight 40, other options seem to be straight 50. Does it matter which? I know not to use modern gear oils as they attack the copper-bearing alloys in older gearbox designs.
by CylvaBirch
Thu Sep 05, 2019 11:40 am
Forum: Four stroke
Topic: 1955 NH gearbox oil change
Replies: 12
Views: 3768

1955 NH gearbox oil change

Could someone please advise on the oil change frequency for the GB gearbox used on my Red Hunter?
I have found the drain plug using a big mirror. I cannot seem to find the change frequency, my manual just says to check the level and top it up. How much oil is required?
Thanks in advance,
David.
by CylvaBirch
Wed Aug 14, 2019 4:35 pm
Forum: Four stroke
Topic: Single Cylinder Ignition Timing
Replies: 9
Views: 1800

Re: Single Cylinder Ignition Timing

My timing stick is a plastic drinking straw with the concertina bit bent over so it cannot fall down the hole.
by CylvaBirch
Wed Aug 14, 2019 4:31 pm
Forum: Four stroke
Topic: Epic fail! Oil purifier has beaten me
Replies: 6
Views: 1233

Re: Epic fail! Oil purifier has beaten me

Thank you all for your input.
I have now ordered one of the special surface drive sockets ready for another attempt, probably over the winter.
I have a new purefier screw from John Budgen ready to replace the old one.......when I can get the b@gger out!
David.
by CylvaBirch
Tue Aug 13, 2019 5:55 pm
Forum: Four stroke
Topic: Epic fail! Oil purifier has beaten me
Replies: 6
Views: 1233

Epic fail! Oil purifier has beaten me

Tried to get the oil purifier out of the flywheel on my 1955 NH today. Would not come out, so have left it “for another day”. I have now ground down two 11mm sockets ready to bash on but I really think I will have to lay the bike down on its side next time. Not possible to do it alone, bad back and ...
by CylvaBirch
Wed Aug 07, 2019 9:35 am
Forum: Four stroke
Topic: Nh 350
Replies: 21
Views: 3239

Re: Nh 350

Didn’t Ariel actually offer Red Hunter owners a higher compression piston for competition and trials? I believed it was supposed to be a straight swap, or have I misunderstood?
David.
by CylvaBirch
Sat May 25, 2019 7:13 am
Forum: Four stroke
Topic: Side stand for NH
Replies: 7
Views: 742

Re: Side stand for NH

Thanks everyone.
I can understand the geometry of Steven’s modification to the spring anchor point. Looking at my frame though I was hoping not to have to have any welding done. Has anyone made a fitting to clamp onto the frame ahead of the pivot lug?
by CylvaBirch
Tue May 21, 2019 6:43 pm
Forum: Four stroke
Topic: Side stand for NH
Replies: 7
Views: 742

Side stand for NH

I am very concerned about using the side stand on my 1955 NH. It is in good condition but I can foresee the bike rolling off it very easily indeed as it flicks back up with no need for a positive action to be taken. The spring seems to me to originate in the wrong position behind rather than in fron...

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