Ivchenko-Progress AI-25TL
(4)

Previous Page -
Next Page

One of the things that may have contributed to the hot starts was that the top air bleed valve was in the open position and at low RPM's the valves should be closed. This valve was seized and in the open position as pictured.

Firstly the motor and reduction gearbox was removed and found to be working well.
Then I removed the butterfly valve housing and found that it was this part of the assembly that was seized, a bit of tinkering and some WD40 eased it off nicely.

Then I had a think about the valves and made the decision to remove them altogether from the equation, what's the point of having them if the engines not in a plane? The pipe work was removed, which made the engine look less busy and the surface prepared with some Hylomar.

I made disc out of 3mm aluminium and bolted it in to place where the air bleed pipe work used to be.

Same again on the underside, I believe this pipe was for the air conditioning, but I may be wrong.
I have been fortunate to have some correspondence with a chap called Bernd Rehn, if you look for anything L39 you will find his name, I believe he is revered as a god in some countries! Based on the bits he has told me and bits I have worked out for myself I have been able to start the final control panel electronics.

A rear view of the control panel electronics, mainly delay timer relays and normal relays, there are quite a few more components yet to be added.
A bit of good news, if you can call it that, is that the damaged device is a differential pressure signaler, basically a device that tells you if your fuel filter is becoming blocked, I believe I can manage with out it as the engine is ground based.

I had the opportunity to try the engine out at a disused airfield, fuel was provided in the form of two 205litre drums of your finest JetA1. Two of the runs were filmed and can be viewed on the media page.
Why didn't I make one of these before? Using the two RSJ's from the original transport stand and a few bits of metal that I had lying about, I have made a very useful hoist that is capable of lifting 500KG's, this makes the removal of the engine from it's stand a snap and it's safer as well.

The frame and trailer chassis have been left outside intentionally for a couple of weeks to get a thin layer of rust to form, when this is removed using shot blasting a rough surface remains making the adhesion of the powder coating stronger.
The trailer has now been powder coated and is ready to be put back on the engine, nice to see metal without brush strokes in it.
The engine about to be reattached to the frame.
Previous Page - Next Page

Home
News 2006 - 2007 - 2008 - 2009 - 2010 - 2011 - 2012 - 2013 - 2014 - 2015
Media 2008 - Media 2009 - Media 2010 - Media 2011 - Media 2012 - Media 2013 - Media 2014 - Media 2015
Links - Jet Power LIVE - DIYGT Live - Site Map - Engine Addict - Black Sails - Pulling Power - Earcom - For Sale
Airfields - Disclaimer - Contact - Bennett Tehnology
Turbo Generator Set Home - TurboGenSet (1)
AMT Titan Home - Titan (1)
RU19A-300 Home - RU19A-300 (1) - RU19A-300 (2) - RU19A-300 Media
Motorlet M701 Home - Motorlet M701 (1)
de Havilland Ghost 48 Home - Ghost 48 (01) - Ghost 48 (02) - Ghost 48 Media
General Electric CF6-50 Home - GE CF6-50 (1) - GE CF6-50 (2) - GE CF6-50 Specs - GE CF6-50 Media
GTC85 Home - GTC85 (1) - GTC85 Media
Rolls Royce Gnome H1200 Home - Gnome H1200 (1) - Gnome H1200 (2)
Artouste Home - Artouste (1)
Rover 2S Home - Rover 2S (1)
Olympus593 Home - 593 (1) - 593 (2) - 593 (3) - 593 (4) - 593 (5) - 593 (6) - 593 (7) - 593 Media
Plessey Solent Home - Plessey Solent (1) - Plessey Solent Media
Stad 250 Start Cart Home - Stad 250 Start Cart (1) - Stad 250 Start Cart Media
Rover 2S 10501 Home - Rover 10501 (01) - Rover 10501 (02) - Rover 10501 (03) - Rover 10501 (04) - Rover 10501 Media
Rolls Royce Spey 250 Home - Spey 250 (1) - Spey 250 (2) - Spey 250 (3) - Spey 250 (4)
Lucas CR201 Home - Lucas CR201 (1) - Lucas CR201 Media
Rover 1S60 Fire Pump - 1S60 Fire Pump (1) - 1S60 Fire Pump (2) - 1S60 Fire Pump (3) - 1S60 Fire Pump Media
Vulcan AAPP Rover 1S60 Home - Vulcan AAPP Rover 1S60 (1) - Vulcan AAPP Rover 1S60 Media
Tiernay TT-10 Home - Tiernay TT-10 (1) - Tiernay TT-10 (2)
AI-25TL Home - AI-25TL (1) - AI-25TL (2) - AI-25TL (3) - AI-25TL (4) - AI-25TL (5) - AI-25TL Media
PBSVB Saphir5 Home - Saphir5 (1) - Saphir5 (2)
Solar T62T-32 Home - Solar T62-32 (1) - Solar T62T-32 (2) - Solar T62T-32 (3)
H&S Stad 250 Home - Stad 250 (1) - Stad 250 (2) - Stad 250 (3) - Stad 250 Media
Turbomeca Marbore II Home - Marbore II (1)
DIY Gas Turbine Home - DIYGT (1) - DIYGT (2) - DIYGT (3) - DIYGT Media
Blackburn Palouste Home - Blackburn Palouste (1) - Blackburn Palouste (2) - Blackburn Palouste Media
Garrett GTP70 Home - GTP70 (1) - GTP70 (2) - GTP70 (3) - GTP70 (4) - GTP70 Media
Wren XL200 - Wren XL200 (1) - Wren XL200 (2) - Wren XL200 Gallery
Air Research JFS100-13A
Air Research JFS100-13A
Williams WR27-1 Home - WR27-1 (1) - WR27-1 (2) - WR27-1 (3) - WR27-1 (4) - Williams WR27 Media
Lucas CR201 Homepage - Lucas CR201 (1) - Lucas CR201 (2) - Lucas CR201 (3) - Lucas CR201 (4)
GTP30 Homepage - GTP30 (1) GTP30 (2) - GTP30 (3) - GTP30 Technical Stuff - GTP30 Gallery
Solent 1 - Solent 2 - Solent 3 - Solent 4 - Solent 5 - Solent 6 - Go-Kart Gallery
Viper 102 Home - Viper 102 (1) - Viper 102 (2) - Viper 102 (3) - Viper 102 (4) - Viper 102 Media
Lucas CT3201
Viper C201 Home - Viper C201 (1) - Viper C201 (2) - C201 Technical Stuff
Avon Homepage - Avon 1 - Avon 2 - Avon 3 - Avon Gallery
Rover 1S60 Homepage - 1S60 (1) - 1S60(2) - 1S60 (3) - 1S60 (4) - 1S60 Media
Rover Turbine Homepage - Rover 1S60 (1) - Rover 1S60(2)
Rolls Royce Nimbus (1) - Rolls Royce Nimbus (2) - Rolls Royce Nimbus (3)
DIY Jet Kart Home - Jet Kart (1) - Jet Kart (2) - Jet Kart (3) - Jet Kart (4) - Jet Kart (5) - Jet Kart (6) - Jet Kart (7) - Kart Media
GT Car Home - MGF (1) - MGF (2) - MGF (3) - MGF (4) - MGF (5) - MGF (6) - MGF (7) - MGF (8) MGF (9) - MGF (10)
MGF (11) - MGF (12) - MGF (13)- MGF (14)- MGF (15) - MGF Media - MGF Press - GT Car's Original
GT Car Phase2 (1) - GT Car P2 (2) - GT Car P2 (3) - GT Car P2 (4) - GT Car P2 (5) - GT Car P2 (6) - GT Car P2 (7)
GT Car P2 (8) - GT Car P2 (Press) - GT Car P2 (Media)
Jet Pickup Home - Nimbus1 - Nimbus2 - Nimbus3 - Caddy1 - Caddy2 - Caddy3 - Caddy4 - Caddy5 - Technical - Pickup Gallery
TurboJet Go-Kart Home - Go-Kart1 - JFS1 - JFS2 - JFS3 - JFS4 - JFS5 - JFS6 - JFS7 - JFS8 - JFS9 - JFS10 - JFS100 Gallery
Jet Sinclair C5 Home - Jet C5 (1) - WR24-1 (2) - JFS100 (3) - Jet C5 (4) - Jet C5 (5) - Jet C5 (6) - Jet C5 Media
Epervier Home - Epervier (1) - Epervier (2) - Epervier (3) - Epervier (4) - Epervier (5) - Epervier (6) - Epervier Media
Daihatsu Hi-Jet Home - Hi-Jet (1) - Hi-Jet (2) - Hi-Jet (3) - HiJet (4) - DOOM - HiJet (6) - HiJet (7) - HiJet Media
Feddie Bennett's Hovercraft Home - Fred's Hovercraft (1) - Fred's Hovercraft (2) - Fred's Hovercraft Media
Virtual Radar Home - Virtual Radar (1)
EV MX5 Conversion (Home) - EV (1) - EV MX5 (2) - EV MX5 (3) - EV MX5 (4) - EV MX5 (5) - EV MX5 (6) - EV MX5 Media
Stirling Engines Home - Stirling Engines (1) - Stirling Engines Media
Mev Rocket Kit Car - Rocket 1 - Rocket 2 - Rocket 3 - Rocket 4 - Rocket 5 - Rocket 6 - Rocket 7 - Rocket 8 - Media
Geepstar Home - Geep(1) - Geep(2) - Geep(3) - Geep(4) - Geep(5) - Geep(6) - Geep(7) - Geep(8) - Geep(9) - Geep Media
Geepstar Trailer Home - Geepstar Trailer (1)
ZZR600 Kart Home - ZZR600 Kart (1) - ZZR600 Kart (2) - ZZR600 Kart (3) - ZZR600 Kart (4) - ZZR600 Gallery
EV Powered ZZR Home - EV Powered ZZR (1) - EV Powered ZZR (2) - EV Powered ZZR Media
Landrover ECU Home - Landrover (1) - Landrover (2) - Landrover (3)
Home Made Green Electricity - Green Electricity (1) - Green Electricity (2)
6 Bladed Windturbine Home - Windturbine (1) - Windturbine (2) - Windturbine Gallery
Model Planes Home - Model Planes (1)
RG Triclone Home - Triclone (1) - Triclone (2)


Free counters!

Jet Power Homepage