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Post by fatherchuck53 on Mar 2, 2018 9:53:38 GMT -5
Why does everyone seem to mount the engine centered?
Most bike engines chain drives off left side. Flip the wheel, offset.
On side by side seating aid in weight distribution when solo.
Allow for a shorter wheelbase. Shorter wheel base more roll stability. Swing arm could be fabricated for bracing in front of pivot point. This would allow the wheel to be easily moved forward numerous inches.
Is my thinking flawed.
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Post by DaveJ98092 on Mar 2, 2018 11:49:33 GMT -5
There are a couple of trikes that the engine is mounted where the passenger seat would be, on a left hand drive chassis. The engine weight does offset the driver. But yes you would need to redesign the swing arm. In the case of my Burgman 650's engine being very long I will make my chassis wide so the engine will set around my right hip or thigh and put my fuel tank where the passenger would set. My engine has a built in swing arm with 5 gears inside, no chain/belt or shaft.   |
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Post by fatherchuck53 on Mar 2, 2018 12:10:10 GMT -5
The burgman and many other shaft drive setups would not be readily feasible.
No need to set the engine in the passages seat , just shift to right. Keep wheel center on trike center I
Line. As for the swing arm, for most of us, if we have the skills to build a trike to begin with that shouldn't be that technical.
Years ago on a triumph 650 trike I build I did that and was able to move the rear wheel forward appropriately 7 inches. And reduced the frame/swing arm flexing.
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Post by DaveJ98092 on Mar 2, 2018 14:48:05 GMT -5
Yes I understand. But a swingarm's geometry will need to keep the front sprocket in neutral like the OEM so the chain does not get stretched or slacked too much during movement or you will have chain skip under power. The pivot point would need to be copied. Easy Peasy to copy, hard to engineer all on your own for most builders. Over the years complaints of Chain Skip, a BANG BANG BANG while under power was common.
It will be interesting to watch but I do not know enough to say there will be any benefit gained. The whole rear cradle would need to be offset by what 5 inches? You could hang the radiator in the normal left side space for frame balance.
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Post by fatherchuck53 on Mar 2, 2018 15:42:02 GMT -5
One of the benefits over stock form would be the ability to put the swing arm pivot closer to or even with the sprocket centerline. Reduced vibration, increase wear on entire drive drain , gears sprockets,chain, tire.
Yes some people choose to simplify the build by "bolting" on a standard motorcycle , I'm talking about those that chose to eliminate the original motorcycle frame.
We build our own front suspensions. A rear swing arm has less variables.
The heavy brace on the swing arm could be relocated though the use of other bracing to allow to shift the rear wheel forward also.
A person could foreseeability build a single sided swing arm.
The wheelbase is excessively long on most trikes. Shortening would improve handling.
And as for keeping the cg center, no I would want it offset for when I was riding solo on a side by side trike. A single seat then yes battery radiator such could be used to center up the cg.
I'll try to get my son to draw up a couple of sketches to post of simple archiving this.
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Post by fatherchuck53 on Mar 2, 2018 16:16:37 GMT -5
I apologize for my sentences not always making sense. My meds don't always help my thinking.
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Post by srx660 on Apr 13, 2018 4:09:20 GMT -5
At one time, years ago,i found a mid engine sports car that had a inline 4 cyl engine and trans sitting beside the driver cockpit. It was Driving the rear wheels with a offset rear axle. I thought it was a great idea and put the pic up on this forum with the idea of driving a single rear wheel. Easy and pretty simple to do i thought it would make a great trike. Others here did not seem to like the idea so i went no further with it. I have always thought my purpose here was to offer pictures of everything i could find about RT's, even if it was quite outlandish. Just giving something others have not thought of might let them rethink what they want to build and perhaps come up with a completely new method to design and build a reverse trike.
Alas, the demise of the photo hosting websites has stopped a lot of new ideas and pic's on these forums. Photobucket has caused the photo of the mid engine sportscar to disappear from here. I do have every picture i saved in my DVD archives, but i will have to look thru about 20 DVD's to find it.
srx660
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Post by srx660 on Apr 15, 2018 9:10:21 GMT -5
Found my mid engine picture. i can't find how to post it yet, so just click the link. srx660  |
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Post by DaveJ98092 on Apr 15, 2018 11:28:33 GMT -5
James, I went to your original post and added the Photobucket "HACK" fix of adding " ~original " to your picture and it worked. You just add that ~ and original to the end of the URL and it may work on some pictures but not all. Link to old post with restored pictures: reversetrike.proboards.com/thread/36/innards?page=1&scrollTo=6959 |
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Post by fatherchuck53 on Apr 16, 2018 11:37:40 GMT -5
What you are thinking of are the sindwinder style that was popular in go karting years ago and had a very short stink in F1 racing. What I'm suggesting is a side by side seating trike, with the engine off set to sit more behind the passenger seat.
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Post by mtntech on May 3, 2018 21:13:48 GMT -5
Put the engine where ever it makes sense!
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