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which is of course what makes it great....Trouble is that there's virtually nowhere you can use it safely and legally.....
@ PeterPoddy: well this is what Jeremy Clarkson had to say about it in this video, not sure if any of this has changed since. For now I'm treating it as being illegal on public roads. But there are plenty of back roads and tracks nearby I can go on.
Shermer 75: This is technically a Jet Engine, not sure why the industry call small jet engines 'Turbines'. A turbine is essentially a fan shaped object that has a medium passing through it making it rotate.
Somafunk: If you want something small just to run in your back yard I can help out with that.
Trademark: I do live in north England, Cumbria in fact. if you near and want to come have a look then let me know.
Caspian: I can bolt on of these to pretty much anything 🙂
Meanwhile I've gone and checked the pricing.
Tadpole trike + 4 of those motors would be more fun than just about anything. Maybe it would be safer (that being a relative term) using a gokart chassis.
Just imagine the fun of reverse thrust braking.... 🙂
Edit:
This could also revolutionise kayaking...
Caspian: I can bolt on of these to pretty much anything
Just sayin 8)
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[quote=jetbike ]Shermer 75: This is technically a Jet Engine, not sure why the industry call small jet engines 'Turbines'. A turbine is essentially a fan shaped object that has a medium passing through it making it rotate
Well technically I think it's a jet turbine or turbojet - as opposed to a pulse jet or ram jet which doesn't have rotating parts. Assuming it does have a rotating compressor and turbine?
Now THAT looks epic fun!!!
Good news. I went out on the bike this afternoon and I'm still alive, and I have some more video to upload 8)
Aracer: thanks for the heads up on the wheel reflectors, I thought I was getting a strange wobble coming from them.
have you got a link for the engine?
Well here is the first video, building up the guts to go faster on each run. The footage was taken with my phone and the wide angle lens makes it seem slower?. At around 40mph the steering felt a bit shaky might need a steering damper, or maybe it was me shaking because I was so cold.
Trademark: I do live in north England, Cumbria in fact. if you near and want to come have a look then let me know.
That's great, thanks jetbike.
I'm NE England but regularly in Cumbrian hills.
Cheers.
That is just bloody great.
Love the noise when you zoom past.
The world needs more loons like you.
Have just upset the dogs listening too that. AWESOME, now when are you flogging one with full reheat!
the noise is just ridiculous - sounds like it's been dubbed. love it.
Agree with Ming. Afterburner needed.
That's ****ing brilliant!
Where abouts in Cumbria are you?
Here is the second video. The afterburner for this would be cool but they very thirsty.
Reached 45mph on the last video, I was still accelerating but my bravery was running out.
Careful getting your leg over
Does your foot pass through the engine exhaust when you mount like that? 😯
Also watch how you build up speed. A lot of road bikes build up an oscillation at certain speeds on certain surfaces because of the harder tyres and buildup of surface vibrations. Less of a problem with mtb because the softer tyre acts as a damper. Google shimmy or speed wobble!
Otherwise -awesome and looking forwards to more!
Max looniness!
Afterburners please.
Keep it coming... 🙂
Slacker head angle would help with steering stability (steering axis is further in front of the contact point). Probably not that helpful now I know.
Keep up the good work!
thenorthwind - Member
Slacker head angle would help with steering stability (steering axis is further in front of the contact point).
No, steeper with more trail.
Very nice.
Just out of interest don't the wheels need to be balanced when doing high speeds?
Mikeypies: There isn't a link, but if you want to know more just email me at gbjetbike@gmail.com
Breadcrumb: I'm in Penrith. Email me if you want to pop by.
Because there is little need for pedalling efficiently, you could do some pretty drastic things with your riding position to get your body lower and flatter. There are some big gains to be made in reducing air resistance! The gravity bike suggestion is spot on.
The noise on that is awesome, seriously awesome
Props
oh... hang on...
very cool effort there but at the risk of being a killjoy, probably best not to do it on a public road or do it next to any fields with livestock in them - you don't want to start animals panicking and running into fences etc. Other than that, top marks!
Absolutely fantastic!
Can I join the waiting list to get a car conversion kit please. 😆
myoptic: no my leg doesn't pass through the hot gases. The hot air mixes very quickly with the surrounding air and cools very quickly. Makes for a nice had warmer at half a meter 🙂
[quote="chestercopperpot"]
Just out of interest don't the wheels need to be balanced when doing high speeds?
Don't think 60 is close enough to "high speeds" to make it an issue, unless they are buckled or otherwise knackered.
I mean, road wheels aren't balanced and I've had knocking on for 70 going down some mountain passes. And probably only 10-15mph slower on the mountain bike.
60 is probably high enough for the unbalance due to the reflectors to start to cause issues, as that will make the wheel far more out of balance than normal 😉
Breadcrumb: I'm in Penrith. Email me if you want to pop by.
Might do. Hat's off to you!
Dropped bars, aero tuck, lycra, and then you'll need disc brakes.
Kinda think I recognise that road!
Brillaint effort, love it! Def needs strapped to a different bike though!
I reckon we chip in to pay Jedi expenses from Herts up to Cumbria!
[quote="aracer"]60 is probably high enough for the unbalance due to the reflectors to start to cause issues, as that will make the wheel far more out of balance than normalSo more like not fit for purpose than "out of balance" 😉
Wicked thread can just imagine look on Garda faces over here when that whizzes past em.
Totally good fun hats off to you .
I've hit 57mph down a hill once (with panniers so probably similar weight distribution to you) - I did have fairly wide slicks and suspension forks on which may have helped. I didn't experience any wobbles, but didn't have reflectors fitted - I can imagine they might not help based on the wobble I get from one of my bikes on the stand.
I wussed out of going for the big 60 due to a slight bend, not great road surface and a car coming the other way. Bikes should be OK up to about 60-70, you can hit that with a suitable hill. Is the wobble going away above 40mph or getting worse?
<hat>
You could hide these motors and the fuel supply in panniers. Then there would be no obvious signs of assistance. 🙂
two panniers, two jets, coincidence.
I think not.
Superb, absolutely superb. The noise is just awesome 😀
paint the whole thing red, everyone knows red is faster.
Philjunior: im not sure if the wobble is going away above 40mph or getting worse. it was about the same till 45mph. but this could have been me that was causing it as it was bl**dy cold and i might have been me shivering.
Im not sure what the max speed of this bike is, its a cheap bike after all. im not looking to brake any speed records but would like to know how fast it could go. I have access to a runway so might find out one day.