There’s going to be a V8 coming soon too 😁

😂

Cheers

Thanks, looks a cleaner than my last lot of instructions. Are you going to give the gearbox ago? It seems to work really well. Perfect for none motor driven vehicles too as the ratio doesn’t pass 3:1 like the older 4 speed manual gearboxes

@@Legotyres id liked to but I dont have some of the gears but Ill recomd it to my viewers to see if they want to make it. Do you want me to put the video link on my community tab ?

@@brickaversion if you wish to recommend it to your followers, I’m totally onboard with that. Just happy for people to make use of something I’ve created. If they post it, I’d love to be tagged so I can see it tho as that’s the exciting part seeing others making use of it 😊

@@Legotyres All put your video link on my community tab then

@@brickaversion I've added a fellow KZfaqrs link which now includes you :)

Aye, the inspiration came from either the Scooby Doo 😉 and the first boxer engine I made came from the vee dub 🤪

Thanks

Thanks

That sounds like fun 😂

Hahaha, that would be something 😂

Trying a new video editing program

Yes, you did suggest it some months ago 😊. Glad you like it and it was certainly a lot more complex than I’d realised moving from a single OHC to a DOHC (as you can see from the videos). But thanks to the small springs, it works a treat A proper video is due to drop tomorrow with the single OHV engine I made quite a while ago I got the springs for the Harley Davidson Engine I was working on which can now resume soon. It had a similar orientation as a DOHC engine, even though it uses pushrods like the other engine shown in tomorrow's video 😊

Thanks, can you Later detailing engine? 🎉

@@Danio_72I may make some instructions. At present I'm making instructions for my 8 speed gearbox, so hopefully when I finish that, I may have some time to make some for this Thankfully, the design is quite simple, the hard part was making it simple 😂 The springs if you're interested are 03x6x10mm and found on eBay for about £3 for 10 It would've been better with 11mm in length, but I couldn't find any that size What has been surprising is how free the engine turns. It is as if the springs are not there

@@Danio_72 as for detailing it. Haven't any plans as yet as it could be any engine. I'm thinking of mounting it transversely in a studless version of the legendary 8865 which im hoping complete late 2024 early 2025 and keeping the 4 cylinder theme alive compared to just adding another simple v formation engine

Ok

No, its just running in the wrong direction (blooper mistake by me) 😂

So do you mean like it's supposed to run clockwise or you just had the camera on what would ve the exhaust side for the first part of the video? Cause Then when you flipped it around your intake valve is opening during the compression stroke.

@@D8Dozer if you wait for todays video, you’ll see it working correctly. I’ve even added comments on it so you can understand it a little more 😊

Thanks, I’ll need to have a look. Cannot remember if I’m already registered with the Lego community 😳

This one’s been dismantled now.L and the new one has a bigger problems as the valve holder rocks. I’ve another design idea for this side, but it’ll be a few days before I put it into practice 😊 Then I’ll start looking at the timing and locked in

@@Legotyres just remember that the valves should rotate twice as fast as the crank so a 2 to 1 gear ratio and then you'll have it.

⁠@@D8Dozerit’s the other way round as illustrated in the video. 2 full rotations of the crankshaft to a single full rotation to the camshaft. This enables the engine to run through its 4 stroke cycle of “inlet, compression, power, exhaust” with the valves only opening on inlet and exhaust strokes 😊 @Legotyres

@@Legotyres actually your right I had it backwards. But still 2 crabks one valve. I think that's causing your issues.

@@D8Dozer it’s all good now. This engine has been dismantled and been replaced with a brand new design 🙂

It’s a tiny single cylinder engine using a DOHC (Double Over Head Camshaft). There is another clip where you can see the valve timing in action if you’re interested. Just check my last KZfaq Clip @legotyres

Aye. The previous ones were only half hearted for a finish as I’m saving it for when my springs arrive as the two 5mm springs used on one 3 axle with stopper keeps coiling in on itself. They’re not due for another 10 days 😂

Thanks

Thanks 🤩

Ha, it’s only a tooth out 😂

@@Legotyres No. It is pff by more than a tooth.

@@D8Dozer ha, that was a joke. As these are prototypes, they’re close enough especially as there are only a handful of twin cam Lego engines which have ever built in the world and shown on KZfaq. Especially this small 😊

Honestly if a larger gear was used to spin the piston cam or whatever you call it, the valve timing would match the strokes better

​​⁠aye, you’re right, but Lego isn’t that accurate anyway as the amount of play is quite massive. Yes you can tighten it by adding a tensioners, then you add more friction plus that even alters the timing to and that then makes it difficult to use with manual products plus the timing issues return It’s a trade off for something which kind of looks quite cool, enjoyable to experiment with and at its heart follows the basic principles of a real engine 😊 You’re more than welcome to give it a go tho as I’d love to see what you can come up with at this size. Most fail to get this close unless they use modified parts which is not the case here, nothing has been destroyed in its design and the only none genuine parts are the springs which fit just like Legos own springs with out harm

Glad you liked it and thanks 😊

Ha! You haven’t seen the bloopers yet where it falls apart in the least dramatic way 😂

Second prototype in a couple of days. It’s a little weak tho and pushing it has caused it to fall apart 😂 Waiting for the 10mm 0.3x6x10mm springs as I’m having to double on 5mm versions as I only 10 of them as a tester 🤪

Cheers

Totally agree 👍

Thank you

Not too bad for a first attempt. Took me a little longer than I thought to work out the valve timing. But as the batteries had run out on my Powered Up Hub, what else was I to do 😂

Nah, don’t worry yourself on that one. That model is too good to be turned into a parts bin. I mainly use Legos Pick a Brick or BrickOwl for spare parts. That is unless I’ve bought them for parts or been unhappy with the end result 🤪 P.S. I’ve been buying Lego since 8865 was released and you certainly accumulate a few spares along the way 😂

Is that the one you voted for to?

@@Legotyres yeah I don't think you need the entire seat reclining

@@crazytechnic486 I like the angle, but it’s not as strong as the fixed. So, I’m going to see if I can raise the front by half a bush to see what that looks like 😂

Ha, more than two, but less than 100 (just 😉) 😂 sadly, I’ve a thing about Lego technic gears

@@Legotyres I ment how many speeds 😆

Hahaha, I know, I think I’ve gone a little bonkers 🤪 I’ll blame that on Lego’s 42110 Landrover Defender. It has an 8 speed gearbox, so I built one and stuck it in it. You can see it in a couple of the videos Was never happy with it 🤷‍♂️ Fast forward a few years and I’ve created a much better design where none of the gears speeds overlap plus its maximum output is 3:1. It’ll make it the perfect 8 speed gearbox to work with a hi/low transfer box plus it shouldn’t add any more stress than LEGOs original 😂 Told you I was gears mad but 🤫, don’t tell anyone 🤣

@@Legotyres that much room for 8 speeds ?? I build one only half as big as your first one shown in the video (would love to give you the file but laptop won't start anymore 😭)

Computers, they rules us don’t they 😳 (hope you get it fixed soon The standard 8 speed gearbox is really tiny and no larger than the 8 speed I squeezed into Landy. It’s the stepper system which is massive 🤪 I’m looking to create a single stepper system for the powered up program I’ve created which will then hopefully fit into an RC I’ve got planned I think I’ve already posted a crude version of the stepper on a very early MOC plus if you check back, the Landy gearbox which incorporates the stepper is also in my video feed That was my very first attempt at making an 8 speed before I switched back to my FWD when I found I could flip one of the gears for a reverse 😂

I’ll be making some free instructions at some point which will be available on rebrickable under the profile @Legotyres 😊

That would be awesome! Thank you! 🙏