Search found 44 matches

by JimCrawford
Wed Jan 20, 2021 7:04 pm
Forum: Aircraft Construction & Maintenance
Topic: Dual battery setup for Leberg ignition
Replies: 2
Views: 156

Re: Dual battery setup for Leberg ignition

Hi Ian, I am installing a dual Leburg system on my Nipper and have a few comments that might prove useful: My original intention was to use a pair of LiFePO4 batteries but I have fallen back on gel cells for several reasons. The main driver is that a gel cell system (including alternator) is very ne...
by JimCrawford
Tue Oct 13, 2020 2:10 pm
Forum: Hangar Chat
Topic: Repeal of stolen airspace LAA AGM motion by Zoom 18th Oct.
Replies: 11
Views: 822

Re: Repeal of stolen airspace LAA AGM motion by Zoom 18th Oct.

While I understand and thoroughly agree with the intent of the proposer's motion, I wish it had been better worded. Strictly interpreted it makes little sense. The meaning of ATZ is set out in Article 5 of the Air Navigation Order (ANO) 2016 and is a volume of airspace around an airfield 2000ft abov...
by JimCrawford
Wed Mar 04, 2020 12:13 pm
Forum: Aircraft Construction & Maintenance
Topic: Wheel Hub dimensions
Replies: 0
Views: 321

Wheel Hub dimensions

I've been making up some wheel hubs to be able to change my Nipper from the 3 1/2 x 4.95 tyres (made from unobtainium) to easily obtained and much, much cheaper 4.00 x 4 (even from Tost!). However I've come across an interesting issue regarding the hub sizes which I hope the forum may be able to sol...
by JimCrawford
Tue May 07, 2019 1:02 pm
Forum: Aircraft Construction & Maintenance
Topic: Briggs and Stratton article
Replies: 1
Views: 1133

Briggs and Stratton article

Could anybody direct me to the LAA mag article issue that described a reduction system for a B&S engine conversion.

Thanks in advance

Jim
by JimCrawford
Tue May 07, 2019 12:59 pm
Forum: Aircraft Construction & Maintenance
Topic: Converting plans/templates into AutoCAD files
Replies: 7
Views: 1959

Re: Converting plans/templates into AutoCAD files

Mike is correct, EAA membershio does come with a free Solidworks licence. Solidworks and Inventor are top level CAD systems and you can do splendid work once you've become accustomed to their operation but that's not a trivial learning process. I'm an EAA member but I use Inventor because that's the...
by JimCrawford
Fri Mar 22, 2019 7:59 pm
Forum: SSDR
Topic: Main Wheels
Replies: 6
Views: 2197

Re: Main Wheels

Well that seemed to work, several previous attempts failed - Gremlins or finger trouble, the truth may never be found! I have schemed a hub for a 400x4 tyre to replace the obsolete size on my Nipper. The old size has been quoted at ~ £450 each unit :shock: and no inner tubes available. 400x4 was an ...
by JimCrawford
Fri Mar 22, 2019 7:33 pm
Forum: SSDR
Topic: Main Wheels
Replies: 6
Views: 2197

Re: Main Wheels - test reply - ignore

A dummy post to try and trak down why my attempts to post fail
Jim
by JimCrawford
Sat Feb 23, 2019 8:41 pm
Forum: Aircraft Construction & Maintenance
Topic: composite system compatible with E5 mogas
Replies: 0
Views: 740

composite system compatible with E5 mogas

I've been searching for a composite system compatible with E5 mogas in order to lay up a fuel tank. The most likely candidate I've found so far is Spruce and Speciality part number Part Number: 01-01109. A vinyl ester system. I'd be interested if anybody has any suggestions or experience with this p...
by JimCrawford
Tue Apr 03, 2018 11:59 am
Forum: Hangar Chat
Topic: Brize and Oxford ACP
Replies: 9
Views: 3287

Re: Brize and Oxford ACP

Time is running out. If you don't understand the serious of the situation read; https://members.gliding.co.uk/library/uncategorised/oxford-and-brize-norton-change-proposals/ https://members.gliding.co.uk/library/pilot-briefing-airspace/brize-norton-and-oxford-airport-acp-consultations-information-fo...
by JimCrawford
Wed Feb 07, 2018 12:34 pm
Forum: Hangar Chat
Topic: Air Courtage - "LAA insurance"
Replies: 6
Views: 2767

Re: Air Courtage - "LAA insurance"

I took out Air Courtage LAA insurance this year mainly because it allowed me to tailor the cover to my needs. I have a Taylor Mono in long term build (very long term!) effectively in storage in a hangar with my Nipper which is 'engine off' for a Leburg fit. I was able to insure both hulls for ground...
by JimCrawford
Tue Jan 23, 2018 12:23 am
Forum: Aircraft Construction & Maintenance
Topic: DHC1 Chipmunk--Electric Starters?
Replies: 1
Views: 1159

Re: DHC1 Chipmunk--Electric Starters?

I was a member of a flying group operating a Chipmunk quite some years ago and it most certainly had an electric starter which was run from the battery situated behind the cockpit. The battery was, however, somewhat 'weak' and mainly served to keep the weight and balance within limits. So we resorte...
by JimCrawford
Wed Nov 01, 2017 2:17 pm
Forum: Aircraft Construction & Maintenance
Topic: Leburg Honda alternator adapter
Replies: 17
Views: 10729

Re: Leburg Honda alternator adapter

John,
Thanks for the tacho pulse information, very useful. It looks as if it is a conditioned version of one of the Hall detector outputs. I have to convert that to a 4 to 20mA drive to match the meter.

Jim
by JimCrawford
Tue Oct 24, 2017 10:36 am
Forum: Hangar Chat
Topic: Handheld radio - New purchase & Licence application
Replies: 12
Views: 8996

Re: Handheld radio - New purchase & Licence application

A smidge more information which may prove useful when using this sort of power adaptor: The Yaesu supplied car adaptor is marked as 9.5 volts. Power converters like the one suggested typically require 2 volts across them to operate properly so your aircraft supply should be a minimum of 11.5 volts. ...
by JimCrawford
Mon Oct 23, 2017 9:01 pm
Forum: Aircraft Construction & Maintenance
Topic: Leburg Honda alternator adapter
Replies: 17
Views: 10729

Re: Leburg Honda alternator adapter

Oxford

0775 726 5030

Jim
by JimCrawford
Mon Oct 23, 2017 4:02 pm
Forum: Aircraft Construction & Maintenance
Topic: Leburg Honda alternator adapter
Replies: 17
Views: 10729

Re: Leburg Honda alternator adapter

And another thing! :) Does anybody have the crimping tool for the Molex connectors they would loan? The cheapest tool I can find is the RSonline one at ~ £150 (inc VAT) which is a tad steep for just a few connections. Not only but also; can anybody tell me the exact format of the tacho pulse from th...