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What happened to bike innovation? #1657660
18/05/2022 13:59
18/05/2022 13:59
Joined: Jun 2007
Posts: 785
Dorchester
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respace Offline OP
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Joined: Jun 2007
Posts: 785
Dorchester
When I started biking there were loads of new ideas floating around; Wankel, turbo, inline sixes,even a diesel. You could buy a turbo and bolt it on to your 4cyl Jap with the inevitable consequences to your unmodified engine internals, but the big 4 over come that by making their own versions. Lag was an issue but nowadays that can almost be eliminated so why no turbo bikes? Norton revised the rotary a few years ago to some good effect but it doesn't seem to have caught on. I believe Enfild India made the first (and last) diesel but with modern diesels and turbos I should think it could be made to work.
How about a 2 stroke turbo? Imagine a quarter mile on that!

Re: What happened to bike innovation? [Re: respace] #1657740
21/05/2022 00:20
21/05/2022 00:20
Joined: Dec 2005
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S. Wales. Way beyond my means
Gripped Offline
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Kwak make the supercharged H2, but you're right, no turbos.

I've often thought that they could make smaller capacity bikes with turbos rather than the litre bikes. I guess it's a combination of cost and issues with lag and boost, but you'd think with modern tech they could sort it. With emissions regs tightening all the time they just keep increasing engine capacity to replace the power lost by the mapping for emissions. A turbo could help in this situation, but it's telling that Kwak chose the more predictable power delivery of a supercharger.

Also thought about diesel bikes too. Just imagine the fuel economy..... 100mpg+? I suspect that for the most part in the west, bikes are less essential transport and more weekend fun.. So a diesel would have a limited market. And why go to the expense of a turbo, when many bikers don't care about fuel economy so carry on making bigger and bigger engines. Just my thoughts...

Just recently joined the cliché and bought a BMW r1200gs. wink

Last edited by Gripped; 21/05/2022 00:24.
Re: What happened to bike innovation? [Re: respace] #1657744
21/05/2022 10:52
21/05/2022 10:52
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Ps. Just to add.... Electric motorbikes are improving so they could be another avenue to explore. They haven't really taken off yet though. Whereas electric pedal bikes are everywhere. Saw a guy (bellend) riding his modded ebike at about 40mph up our road. No helmet and obviously completely illegal. Must admit it looked like immense fun!! laugh

Re: What happened to bike innovation? [Re: respace] #1657776
22/05/2022 13:20
22/05/2022 13:20
Joined: Jun 2007
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Dorchester
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I'd forgotten E bikes, TBH I've only seen little chinese ones which didn't seem like 'real' bikes, no doubt once the big 4 start producing them things will change.

Re: What happened to bike innovation? [Re: respace] #1657778
22/05/2022 14:45
22/05/2022 14:45
Joined: Dec 2005
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Zero make some good looking ones

https://www.zeromotorcycles.com/en-gb

Last edited by Gripped; 22/05/2022 14:45.
Re: What happened to bike innovation? [Re: respace] #1658246
13/06/2022 16:31
13/06/2022 16:31
Joined: Dec 2005
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Staffordshire
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I have a feeling that it's not possible to turbocharge a two-stroke. Something to do with the exhaust needing to be perfectly tuned to create the scavenging effect


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Re: What happened to bike innovation? [Re: Nigel] #1658251
13/06/2022 18:23
13/06/2022 18:23
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Originally Posted by Nigel
I have a feeling that it's not possible to turbocharge a two-stroke. Something to do with the exhaust needing to be perfectly tuned to create the scavenging effect

I understand it's done on snow mobiles but is not without it's problems.

Re: What happened to bike innovation? [Re: respace] #1658262
13/06/2022 23:14
13/06/2022 23:14
Joined: Dec 2005
Posts: 20,678
Aldershot
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There used to be turbocharged 2 stroke diesel trucks a while ago.

Found a clip on YouTube

I think Commer did them in the UK


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Re: What happened to bike innovation? [Re: respace] #1658271
14/06/2022 14:39
14/06/2022 14:39
Joined: Dec 2005
Posts: 33,066
Berlin
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I think the issue is that turbocharging works for a big 2-stroke diesel, but not so well for small petrol/gas engines.


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