Go Back  PPRuNe Forums > Misc. Forums > Aviation History and Nostalgia
Reload this Page >

Which Chipmunk is that?

Aviation History and Nostalgia Whether working in aviation, retired, wannabee or just plain fascinated this forum welcomes all with a love of flight.

Which Chipmunk is that?

Old 9th Jan 2018, 04:51
  #21 (permalink)  
 
Join Date: Mar 2005
Location: N/A
Posts: 3,110
Never ever saw a Gypsy powered machine that had a starter - Dragon, Tiger, Auster, Chippie. Only ever had a problem once using the Armstrong method, as a 16 YO trying to get a Tiger going, near collapse by the time it sprang to life.
megan is offline  
Old 9th Jan 2018, 05:26
  #22 (permalink)  
 
Join Date: Nov 2009
Location: SE Qld, Australia
Age: 73
Posts: 984
Mod H377 in 1991 allowed for the Coffman cartridge starter to be replaced by the Rotex electric unit.
Dora-9 is offline  
Old 9th Jan 2018, 07:08
  #23 (permalink)  
Gnome de PPRuNe
 
Join Date: Jan 2002
Location: Too close to Croydon for comfort
Age: 56
Posts: 6,164
Never ever saw a Gypsy powered machine
Gipsy please!
treadigraph is offline  
Old 9th Jan 2018, 08:40
  #24 (permalink)  
Thread Starter
 
Join Date: Jun 2002
Location: CYYC (Calgary)
Posts: 5,258
The DH-82c that visits my gliding club near Calgary has an electric starter.
India Four Two is offline  
Old 9th Jan 2018, 18:12
  #25 (permalink)  
 
Join Date: Nov 2009
Location: SE Qld, Australia
Age: 73
Posts: 984
Several Tigers here in Oz have Gipsy Major 10/2's (i.e. the Chipmunk engine), complete with electric starter etc.
Dora-9 is offline  
Old 9th Jan 2018, 23:30
  #26 (permalink)  
 
Join Date: Mar 2005
Location: N/A
Posts: 3,110
Gipsy please!
Gave myself a severe talking to for my sins and sacrilege treaders.
megan is offline  
Old 10th Jan 2018, 04:01
  #27 (permalink)  
 
Join Date: Feb 2005
Location: NZ
Age: 68
Posts: 189
Only ever had a problem once using the Armstrong method, as a 16 YO trying to get a Tiger going, near collapse by the time it sprang to life.
Likewise Megan.At the same age.Then I discovered impulse magnetos.
Fark'n'ell is offline  
Old 10th Jan 2018, 06:11
  #28 (permalink)  
 
Join Date: Mar 2005
Location: N/A
Posts: 3,110
Then I discovered impulse magnetos
Oh, I already knew all about them, and the remedy.
megan is offline  
Old 10th Jan 2018, 09:44
  #29 (permalink)  
 
Join Date: May 2007
Location: Merriott, Somerset, UK
Age: 74
Posts: 223
I hope you were taught only to use the handle of the big screwdriver to wake the impulse coupling.
Tony
Tony Mabelis is offline  
Old 10th Jan 2018, 10:05
  #30 (permalink)  
 
Join Date: Jul 2007
Location: Wales
Posts: 47
'Once one learned what the engine needs, it was easy. Prime by pulling the ring that allows fuel into the inlet manifold, pump the fuel pump lever up and down listening for the 'clack clack' of the non return valves in the fuel lines (the tanks are downhill of the engine in the tail-down attitude). When fuel trickles from the manifold drain onto the apron, stop pumping and wait for the dribble to stop.'

The trickle is important - if no trickle the drain pipe could be blocked (old oil) and the manifold full of fuel.

Been there, done that.
papa_sierra is offline  
Old 10th Jan 2018, 14:56
  #31 (permalink)  
 
Join Date: Oct 1999
Location: UK
Posts: 3,336
Oh, and there's starting a Gipsy on a VERY cold morning. I was trying to do this once and the engine wasn't having it. The on-airfield aircraft engineers were open that morning and they couldn't start it using the usual methods either, so I was instructed to get in while two hefty lads lifted the tail to the level attitude.

The chief engineer then did the tickle, suck in, called for 'CONTACT', and swung it. It started first swing.

"Usually when you suck-in you are sucking in vapour from the pool of fuel at the aft (lower) end of the inlet manifold", he explained. "When the wx is VERY cold the fuel doesn't vapourise as readily and probably only the back cylinder gets a whiff. Hold the tail up so the manifold is level and so is the pool of fuel, and they all get some".

Well, it certainly worked!
Shaggy Sheep Driver is offline  
Old 10th Jan 2018, 15:04
  #32 (permalink)  
Gnome de PPRuNe
 
Join Date: Jan 2002
Location: Too close to Croydon for comfort
Age: 56
Posts: 6,164
I believe Rollason engineers used to do that trick using a trestle to get the Tiger Club's Tigers started.
treadigraph is offline  
Old 10th Jan 2018, 18:16
  #33 (permalink)  
 
Join Date: Nov 2009
Location: SE Qld, Australia
Age: 73
Posts: 984
Then I discovered impulse magnetos.
Or, you could fix all your problems (and produce quicker, more reliable starts) by fitting Slicks.

The trickle is important - if no trickle the drain pipe could be blocked (old oil) and the manifold full of fuel.
Actually, this happened to me quite recently, and the oil wasn't particularly "old" - previous start 4 weeks before.

Oh, and there's starting a Gipsy on a VERY cold morning.
What an absolute gem, thank you SSD!! I appreciate that my version of a "VERY cold morning" is nowhere near as extreme as to what you're used to, but I had exactly this issue on a -1C morning!! I gave up and went home...
Dora-9 is offline  
Old 10th Jan 2018, 19:23
  #34 (permalink)  
Thread Starter
 
Join Date: Jun 2002
Location: CYYC (Calgary)
Posts: 5,258
Sorry chaps, I can’t resist. I laugh at your concept of “VERY cold”

As I sit here, in the warm, it’s -21 C outside and that’s the high for the day. -28 C tonight! I have to go out soon and see if my car will start!

All sensible Gipsy Majors are tucked up until spring.
India Four Two is offline  
Old 10th Jan 2018, 23:33
  #35 (permalink)  
 
Join Date: Mar 2005
Location: N/A
Posts: 3,110
SSD, the answer to the problem on the day, was rather chilly, learnt some thing new. Where were you when you were needed?
megan is offline  
Old 18th Jan 2018, 09:01
  #36 (permalink)  
 
Join Date: Jul 2006
Location: Yorkshire
Posts: 191
As a student at CFS Little Rissington in January 1969, I remember the fusilade of cartridge explosions in the early morning as we tried to get some life into the line of Chipmunks that had spent the night in a damp hangar. Gosh it was cold!
Top West 50 is offline  
Old 18th Jan 2018, 10:26
  #37 (permalink)  
 
Join Date: Jan 1999
Location: UK
Age: 72
Posts: 577
@ TW50

Was S/L Steve Holding the C/O at Rissington then? Previously he had been deputy CFI at Leeds UAS at Church Fenton. I'm forever grateful to him - he taught me how to land the Chippie.
Discorde is offline  
Old 18th Jan 2018, 12:05
  #38 (permalink)  
 
Join Date: Dec 2007
Location: northofwhereiusedtobe
Posts: 1,224
Originally Posted by Top West 50 View Post
As a student at CFS Little Rissington in January 1969, I remember the fusilade of cartridge explosions in the early morning as we tried to get some life into the line of Chipmunks that had spent the night in a damp hangar. Gosh it was cold!
Yes Chippies could be a little reluctant to 'fire' during cold spells ( sometimes 2 or 3 carts )

Which reminds me of this little incident....

Back at Abingdon after the xmas holiday many years ago,very cold january weather...chippies not been started for a couple of weeks and were being a little reluctant to fire up.
One of our VRT gentlemen told his groundcrew that they were clear to prime (even though he had just started his walkround) so young 'E' says 'ok' - he primes and swings the prop and hey presto the dripsy chunks into life and continues to idle - even with both mags off LOL.
'E' is just staring at the prop spinning - the pilot is stood holding on to the rudder just gawping .
A quick thinking sumpy SAC jumps up and pulls the fuel cut off !!
What a great start to the new year - much mirth at E's expense but nobody was hurt
Yes there was a good reason why the pilot shoulda been in the cockpit during engine prime
longer ron is offline  
Old 18th Jan 2018, 18:17
  #39 (permalink)  
 
Join Date: Nov 2009
Location: SE Qld, Australia
Age: 73
Posts: 984
Yes there was a good reason why the pilot shoulda been in the cockpit during engine prime
And if you're starting on your own?
Dora-9 is offline  
Old 18th Jan 2018, 20:06
  #40 (permalink)  
 
Join Date: Dec 2007
Location: northofwhereiusedtobe
Posts: 1,224
I was referring to a standard RAF Chippie start Dora

The incident I posted about was very unusual - all the other Chippies we dragged out of the hangar that day were extremely reluctant to start !
longer ron is offline  

Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell My Personal Information

Copyright © 2018 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.