Search found 115 matches

by JimCrawford
Thu Sep 01, 2022 6:22 pm
Forum: GENERAL CHAT
Topic: Hand swinging a Nipper
Replies: 5
Views: 305

Re: Hand swinging a Nipper

I'm uncomfortable with the technique of swinging from behind the prop, standing in front of the wing. The leading edge is between the mid back and shoulder height and I believe that, if the aircraft were to lurch forward on starting, then you could be toppled forward into the prop. Having a hand on ...
by JimCrawford
Wed Aug 31, 2022 8:56 am
Forum: GENERAL CHAT
Topic: Hand swinging a Nipper
Replies: 5
Views: 305

Re: Hand swinging a Nipper

Hi Kate, I changed from magneto to electronic ignition because the original Lucas tractor mags (SR4?) didn't have an impulse coupling so firing at a fixed advanced ~ 20 before TDC which I wasn't prepared to swing. I understand that it is not advised to add an impulse to this mag as the front bearing...
by JimCrawford
Tue Aug 30, 2022 9:59 pm
Forum: GENERAL CHAT
Topic: Hand swinging a Nipper
Replies: 5
Views: 305

Re: Hand swinging a Nipper

Second Photo; chocks are too small. I wrote a short article in the LAA mag a while ago on a simple 'hold back' device which I've made for my Nipper specifically to make solo hand swinging safer and easier. 1834 VW: prime the fuel pump and carb bowl using the pump hand lever Operate the throttle from...
by JimCrawford
Sat Aug 13, 2022 9:22 pm
Forum: ENGINEERING AND MAINTENANCE
Topic: Airworthiness Directives & Service Bulletins
Replies: 2
Views: 252

Re: Airworthiness Directives & Service Bulletins

My Nipper documents have a list of LAA requirements; wing bolt inspection and a couple of others spring to mind.

http://www.lightaircraftassociation.co. ... NIPPER.pdf

should give you a good start.

Jim
by JimCrawford
Sun Jun 05, 2022 5:03 pm
Forum: ENGINEERING AND MAINTENANCE
Topic: LeBurg ignition installation
Replies: 24
Views: 20153

Re: LeBurg ignition installation

All parts present and correct - first preliminary weighing to determine the best location for the batteries.

prelim01_800x600.jpg
prelim01_800x600.jpg (104.3 KiB) Viewed 724 times


Jim
by JimCrawford
Thu Apr 28, 2022 3:57 pm
Forum: ENGINEERING AND MAINTENANCE
Topic: SEV Fuel Pump, service or replace
Replies: 16
Views: 3516

Re: SEV Fuel Pump, service or replace

Once I managed to recondition my old pump I've just pushed on with the thousand 5 minute jobs getting the aircraft ready for it's preflight inspection. I'll revisit fuel pumps when the aircraft has it's permit. I need one anyway for a second engine which is destined to go on my Taylor Monoplane.

Jim
by JimCrawford
Thu Apr 07, 2022 7:57 pm
Forum: ENGINEERING AND MAINTENANCE
Topic: Trim spring
Replies: 3
Views: 638

Re: Trim spring

Hi again,

Posted spring is correct and is fitted.
Thanks to anyone who scrabbled through their bits box to check.

Jim
by JimCrawford
Tue Apr 05, 2022 8:58 am
Forum: ENGINEERING AND MAINTENANCE
Topic: Trim spring
Replies: 3
Views: 638

Re: Trim spring

Hi Neil, I can give you a firm perhaps on that. I have one on its way in the post but I won't know if it's correct until it turns up. A comment from a friend who had a friend who thought he had one made me unsure - a touch of Chinese whispers in the conversation. I shall find out at the speed of pos...
by JimCrawford
Fri Apr 01, 2022 10:00 am
Forum: GENERAL CHAT
Topic: First Photo…
Replies: 4
Views: 662

Re: First Photo…

Thank you, that's very kind. You've started me on what will almost certainly be a wild goose chase. When I was a student I used to visit my parents in Kent and, on returning to Southampton at the beginning of term, I would stop off at Biggin Hill for tea and cake and to spend a while watching the ai...
by JimCrawford
Thu Mar 31, 2022 6:29 pm
Forum: GENERAL CHAT
Topic: First Photo…
Replies: 4
Views: 662

Re: First Photo…

That's great to get such an early shot of your aircraft, how did you find it? I'll try and search for one of mine GAVTC.

Jim
by JimCrawford
Fri Mar 18, 2022 9:19 pm
Forum: ENGINEERING AND MAINTENANCE
Topic: Trim spring
Replies: 3
Views: 638

Trim spring

During all the kerfuffle of getting my Nipper back into the air I've misplaced the trim spring that lives at the base of the stick. :( Has anybody got a spare they would be willing to part with. I didn't get a reply from Airweld, I'll try again, otherwise I'll have to make one.

Jim
by JimCrawford
Sat Feb 19, 2022 4:39 pm
Forum: THE AIRCRAFT
Topic: Now and then…
Replies: 3
Views: 988

Re: Now and then…

Is there a reason for the exhaust extended below and behind the leading edge? Perhaps to avoid any chance of fumes in the cockpit?

Jim
by JimCrawford
Fri Feb 18, 2022 12:23 pm
Forum: ENGINEERING AND MAINTENANCE
Topic: LeBurg ignition installation
Replies: 24
Views: 20153

Re: LeBurg ignition installation

Although my engine is running quite happily I shall remake the ignition leads as the terminations and boots I've used occupy space a little inconveniently. In particular the leads from the coils to the lower plugs cross over beneath the engine just where I need access to the Curtis Valve I've instal...
by JimCrawford
Tue Feb 15, 2022 6:55 pm
Forum: ENGINEERING AND MAINTENANCE
Topic: Wing Bolts
Replies: 2
Views: 641

Re: Wing Bolts

Hi Ross, There is an LAA mandatory to replace or crack test the wing bolts. Bolts of that length are like rocking horse ordure (they are imperial 5/16 if I remember correctly - which is very close to 8mm, hence any metric confusion). Because of the difficulty of getting this length Nipper aircraft h...
by JimCrawford
Sun Feb 06, 2022 10:07 am
Forum: ENGINEERING AND MAINTENANCE
Topic: Rudder Pedal Bungees
Replies: 3
Views: 694

Re: Rudder Pedal Bungees

Any sailing supply shop should be able to sell bungee by the metre, choose the diameter you want, cut to length and make up your own ends.

Jim

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