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Check out the new GAS GAS 4T Trials bike.
http://www.trialscentral.com/cms/showar ... cleID=3496
http://www.trialscentral.com/cms/showar ... cleID=3496
Here is another different 4T
- Thread starter buckwheat5679
- Start date
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What is interesting is that it is a flathead motor. That's why it is so compact.
Re: RE: Here is another different 4T
Looks a bit like the old side valve set up or like my 2Kw Honda generator engine, the two small red caps are where I think you adjust the valve clearences, and it makes the engine very compact and the cylinder head is just like a two stroke head.
Hope they put more into the Gaser than Sherco did with theres.
Regards
Sparks.
Looks a bit like the old side valve set up or like my 2Kw Honda generator engine, the two small red caps are where I think you adjust the valve clearences, and it makes the engine very compact and the cylinder head is just like a two stroke head.
Hope they put more into the Gaser than Sherco did with theres.
Regards
Sparks.
RE: Re: RE: Here is another different 4T
Hm,
to me, this new engine looks like a convential 2-stroke with a 4-stroke sticker on it...
Even on www.gasgasmotos.es is nothing mentioned about a 4 stroke-engine
Regards
Peter
Hm,
to me, this new engine looks like a convential 2-stroke with a 4-stroke sticker on it...
Even on www.gasgasmotos.es is nothing mentioned about a 4 stroke-engine
Regards
Peter
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- Sacramento, California
RE: Re: RE: Here is another different 4T
Check out the wall behind the bike. It clearly states new 4 stroke trials engine. I read a blurb about it in a dirt bike magazine somewhere. Flathead motors are much more compact which would reduce engine height. Check out the exhaust and where it exits the engine. Cool idea.
Check out the wall behind the bike. It clearly states new 4 stroke trials engine. I read a blurb about it in a dirt bike magazine somewhere. Flathead motors are much more compact which would reduce engine height. Check out the exhaust and where it exits the engine. Cool idea.
RE: Re: RE: Here is another different 4T
To me it looks as if the pics have been taken before public days (almost no visitors to see) - so, might it possible that gasgas wasn´t able to deliver the bike in time?
And instead of leaving the space blank, they just placed a convential bike with a new sticker kit there?
I´m not saying that they don´t have a new 4-t engine, but i doubt that the one on the shown pics is one.
pls. proof me wrong
regards
peter
That´s what I did - checked out the wall and couldn´t see any relation to what is in front of the wall...(and still can see no=
To me it looks as if the pics have been taken before public days (almost no visitors to see) - so, might it possible that gasgas wasn´t able to deliver the bike in time?
And instead of leaving the space blank, they just placed a convential bike with a new sticker kit there?
I´m not saying that they don´t have a new 4-t engine, but i doubt that the one on the shown pics is one.
pls. proof me wrong
regards
peter
RE: Re: RE: Here is another different 4T
Just to put in my opinion...
If it was a 2 stroke..the inlet manifold would be situated lower down. I.E. into the crankcase. It is set up more like a conventional cross flow head. So it is more like the old conventional overhead valve arrangement of the old 4 strokes. The side valve theory is interesting as that would be another rediscovery of British motorcycle engine technology from 1908-1910! the japs had a lot of success from re-inventing oval pistons and direct drive!!
Just to put in my opinion...
If it was a 2 stroke..the inlet manifold would be situated lower down. I.E. into the crankcase. It is set up more like a conventional cross flow head. So it is more like the old conventional overhead valve arrangement of the old 4 strokes. The side valve theory is interesting as that would be another rediscovery of British motorcycle engine technology from 1908-1910! the japs had a lot of success from re-inventing oval pistons and direct drive!!
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- Sacramento, California
Flatheads or side valves produce great amounts of torque but are limited due to the port design to the amount of peak horsepower they can produce. For trials this is ideal plus the engine height reduction. Cool idea!
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