What a great episode, 3 engines sorted, can't wait to see and hear the 5 bearing engine up and running. The scarcity of the engines and builder versions I find fascinating. Thanks for sharing.
Interesting comments on doughnut life. Years back my sister had an imp, driving up a ramp in a multi story car park 1 day, one of the doughnuts expired, quick thinking on her half, checked her mirrors, no one behind so rolled backwards into the parking space directly opposite the ramp foot. Fortunately the new doughnut had the steel band on and fitting was a doddle. Very interesting about the 5 bearing block.
That 1120 in the Huskies sounds incredible, like a modern high performance motorcycle. Interesting information on the donuts, I have them in my GT6 and GT40 use them too. Personally, form a mechanical point of view, they absorb vibration, which canât be a bad thing. Iâll definitely be sticking with them.
Another brilliant video Andy , I especially like your interviews,ðĒ It would be even better when you sort the microphone out. Some clip on microphone s would transform the videos and it would relax the interviewees who may not like a microphone stuck in their face and also free your hands up too..
Andy, I know nothing about cast iron engine liners but from my work in the gas industry, cast iron is strong but brittle, ductile iron is very strong and not brittle but it does rust like steel, so I guess they need the correct coolant to stop corrosion. Cast iron gas pipes corrode very slowly and last for ever, ductile pipes rot very fast, ductile iron gas mains are a big problem.
Hi Andy, Thats exactly how i used to fit doughnuts,get a good fitting 5/8 I had a Gedore one, glad to see it works on sport doughnuts, couldn't afford them back in the day. Totally agree bolts break first, I even managed to drive a mile or so home after breaking a bolt on an aggresive start (felt it and floored the clutch pedal ) Who remembers 'SUK' Doughnuts ? They were the poor quality onesð
G'day Andy I appreciate your proprietary rights on the plate. I will be using a glue that a dodgy Pom mob uses Grace Engines Development uses which I can buy in Australia. Tip of the week you can use the old kerosene out of alrsonic cleaner to wash down the mill . Kit from down under
What's the idea behind the 5 Brg. assy? Struggle to overload a 3 brg, 9k+ rpm power units fail in the rod assy before a mains issue raises it's head. Unless your planning on pressure charging the poor little thing?
@@catnip4885 Crank whip contributes to pistons hitting the head and valves if your chasing power to that extent, but then the drag of another 2 main brg. is going to detract from the power gained from the use of a cam profile that runs the valves closer to the pistons, now possible due to a sightly more robust rotating assy. Remember in a power unit designed for optimum power, all brg. sizes are as small as possible, but still able to do the job with the intended service life. In the case of the purest race units, that's about 2 hrs under load at peak power development, endurance units are usually tested at 30hrs ie 6 hrs longer that their intended use
Hi, Yes indeed having operated dynos myself, correcting to Std conditions (temp pressure etc) makes a difference, dubious operators are known to put their hand on the ambient temp sensor of dyno computer to 'show' gains from mapping etc. Andy's using that dyno as a proving load, running in manual dyno mode without automated correction, hence figures an 'indication' rather than calibrated, and he often remarks that its reading a bit high on 'a good air day' Look to the left of his dyno cell and you'll see the other dyno, it has automated control, solenoid valves sensors etc needs commissioned & electronics updated , so nice repeatable graphs for accurate comparison between engines are in Andys project pipeline
Old Distributor ignition systems cause interference, i think that was the problem with some of the mics Andy has tried, I used to work with PA/recording equipment but i'm not upto date with the phone based gear. Do you know of a system that can do multiple inputs for interviewing, directional noise cancelling etc ? Any recomendations wellcome. My (breif) research on Andys behalf only found single mic systems for simple presentation rather than interviews etc.
The Husky is such a great resource for your engine and gearbox testing. Loved every minute of it as always.
Another great video Andy and well done for keeping some of your hard earned engineering secrets to yourself ðð
Another great video from a very busy man.
Loved the time lapse engine remove / install. Although it might be even better with the bunny hill music ðð
What a great episode, 3 engines sorted, can't wait to see and hear the 5 bearing engine up and running. The scarcity of the engines and builder versions I find fascinating. Thanks for sharing.
great episode
Interesting comments on doughnut life. Years back my sister had an imp, driving up a ramp in a multi story car park 1 day, one of the doughnuts expired, quick thinking on her half, checked her mirrors, no one behind so rolled backwards into the parking space directly opposite the ramp foot. Fortunately the new doughnut had the steel band on and fitting was a doddle. Very interesting about the 5 bearing block.
That 1120 in the Huskies sounds incredible, like a modern high performance motorcycle. Interesting information on the donuts, I have them in my GT6 and GT40 use them too. Personally, form a mechanical point of view, they absorb vibration, which canât be a bad thing. Iâll definitely be sticking with them.
Great tip on the doughnuts! Will look forward to trying it out as the last one I did was a nightmare!
Another brilliant video Andy , I especially like your interviews,ðĒ It would be even better when you sort the microphone out.
Some clip on microphone s would transform the videos and it would relax the interviewees who may not like a microphone stuck in their face and also free your hands up too..
Andy, I know nothing about cast iron engine liners but from my work in the gas industry, cast iron is strong but brittle, ductile iron is very strong and not brittle but it does rust like steel, so I guess they need the correct coolant to stop corrosion. Cast iron gas pipes corrode very slowly and last for ever, ductile pipes rot very fast, ductile iron gas mains are a big problem.
You make it all look so easy. When we gonna get some Shrigley 'knit-wear' merchandise?
Hi Andy,
Thats exactly how i used to fit doughnuts,get a good fitting 5/8 I had a Gedore one, glad to see it works on sport doughnuts, couldn't afford them back in the day.
Totally agree bolts break first, I even managed to drive a mile or so home after breaking a bolt on an aggresive start (felt it and floored the clutch pedal )
Who remembers 'SUK' Doughnuts ? They were the poor quality onesð
G'day Andy I appreciate your proprietary rights on the plate. I will be using a glue that a dodgy Pom mob uses Grace Engines Development uses which I can buy in Australia. Tip of the week you can use the old kerosene out of alrsonic cleaner to wash down the mill .
Kit from down under
Today was IMP Day in Prescott ð
Andy you are getting good at this videoing! This is one of the most informative of all your videos! The tips on doughnut bolts is great.
One of the most interesting yet. Thanks.
KNitting!! KNitting!! I don't know what's worse ! Bergerac or kNitting. Getting worse. ðð
I can tell you have changed a few donuts before! Found my ones put up quite a fight to get bolts in I think as have larger bolts as race car!?
Love it Andy - you could change out the engine in 30 mins if you didnt have to chat to everyone that went past giving you cheek
Iâm surprised you donât have a donut clamp
I think that crank would defiantly benefit from a spin on a centre belt driven balancing machine. Balanced from Farndon or not.
What's the idea behind the 5 Brg. assy?
Struggle to overload a 3 brg, 9k+ rpm power units fail in the rod assy before a mains issue raises it's head.
Unless your planning on pressure charging the poor little thing?
But are the rods not failing due to the crank whipping around?
@@catnip4885 Crank whip contributes to pistons hitting the head and valves if your chasing power to that extent, but then the drag of another 2 main brg. is going to detract from the power gained from the use of a cam profile that runs the valves closer to the pistons, now possible due to a sightly more robust rotating assy.
Remember in a power unit designed for optimum power, all brg. sizes are as small as possible, but still able to do the job with the intended service life. In the case of the purest race units, that's about 2 hrs under load at peak power development, endurance units are usually tested at 30hrs ie 6 hrs longer that their intended use
How did the machining affect balance of the engine?
A longer stroke requires a tighter LCA
Have you ever ran an Imp engine with a SU carb, I know some people say they are great for tractibility.
What about correction factors for atmospheric conditions. This would make a big difference.
Hi,
Yes indeed having operated dynos myself, correcting to Std conditions (temp pressure etc) makes a difference, dubious operators are known to put their hand on the ambient temp sensor of dyno computer to 'show' gains from mapping etc.
Andy's using that dyno as a proving load, running in manual dyno mode without automated correction, hence figures an 'indication' rather than calibrated, and he often remarks that its reading a bit high on 'a good air day'
Look to the left of his dyno cell and you'll see the other dyno, it has automated control, solenoid valves sensors etc needs commissioned & electronics updated , so nice repeatable graphs for accurate comparison between engines are in Andys project pipeline
Have you had your eye poked by a microphone stick that wasn't your fault? Call lawyers 4 U!
Why can't you get a fuzzy remote microphone like everyone else ?
Old Distributor ignition systems cause interference,
i think that was the problem with some of the mics Andy has tried, I used to work with PA/recording equipment but i'm not upto date with the phone based gear. Do you know of a system that can do multiple inputs for interviewing, directional noise cancelling etc ? Any recomendations wellcome.
My (breif) research on Andys behalf only found single mic systems for simple presentation rather than interviews etc.