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Post by Modernity on May 17, 2013 3:50:33 GMT -5
Hi Andrew,
Were we talking on Boxing Day in Sydney about your trike project?
Cheers,
Mark
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Post by captainamerica on May 17, 2013 11:22:14 GMT -5
Hey Mark,
Yeah we were talking on Boxing Day when I was out that way staying with the Darlings, I can't believe its been six months already. Things have come quite a ways since then on this side of the pond.
Andrew
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Post by Deleted on May 17, 2013 18:52:39 GMT -5
Andrew, It took me a while to find your project on the web, but I am glad I've tracked it down. You have done a really nice job on the design work and build looks really fine too. I am inspired and you have got me looking at kit project R-Trike over here in Australia made by www.tripodcars.com. Your complete scratch build (as we would call it) is way beyond my resources, so a kit would be the go. I have my eye on a BMW K1200 power plant that might be suitable. I hope to have a new larger workshop space next year and I am thinking this trike project might just be the right way to fill it up. Anyway it was your conversation on Boxing Day on the other side of the world got me thinking, thanks for that. Mark |
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Post by captainamerica on May 21, 2013 9:26:23 GMT -5
Right on, that looks pretty bad ass, I am glad you found me. Looks like you found yourself a good starting option, if you do make it happen you should make a page on here. That's an interesting reverse idea they came up with and that is also really cheap for a chassis. Glad I could be an inspiration, sometimes I need to hear from other people to remind me to get back to work cause no one else is going to do it for me.
Andrew
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Post by charles p on Jun 4, 2013 0:17:17 GMT -5
October '11 Design Progress The plate in front of the drivers feet has been drawn up, it holds the master cylinders and steering rack on to the vehicle with help from some bracing behind it. I reduced some weight off of the bell cranks, the wheel color was changed to match the rims I plan on buying, but more on those later. The stock gsxr 600 gauge cluster has been modeled and added. The engine model has progressed with the addition of the starter gear cover, and the chain guard as well as a start on the cylinder block. A first attempt at an engine mount system was drawn up just to place the engine firmly because it likes to move around when I test the rear wheel motion in Solidworks. This was the first time I have played around with the photo suite in Solidworks and the results turned out rather well I think. I used a stock image of off Google for the tire walls.     |
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Post by Liteway on Jun 26, 2013 21:58:03 GMT -5
It would appear from your plan that you intend to fabricate your own exhaust. If so this can provide a dynamic advantage in so much as getting the exhaust out from under the engine would allow lowering it a couple of inches. In a high performance trike, getting the cg down, especially at the rear, can be an important advantage. Wish I could have managed it.
If you are retaining the bike's swing arm geometry, the pivot at the front of the swing arm will have to be lower to keep the same relationship with the counter sprocket. Unless a smaller diameter wheel/tire assembly is used, this will result in the swing arm working at a different angle. Chain slack will be affected as the wheel moves through its arc. Your computer modeling should be very helpful with this. Anticipate any problems?
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Post by captainamerica on Jun 27, 2013 18:29:10 GMT -5
I haven't said much lately because I am in the middle of turning my new garage into a shop with all the bells and whistles. The floor is epoxied, I just picked up a new stand up air compressor and I am currently in the middle of putting an in-wall air system in before I go ahead and sheet rock the walls. The CNC mill and the lathe will eventually be brought in over the next two months.
To answer your questions I am currently using the stock exhaust, originally I was going to fab my own but because I am using the stock oil pan which sticks down and is the low point on the engine not the header I have opted to try and keep everything stock. As for the swing arm, the mount points were taken directly from the bike itself to allow for an easy transition. The engine mounts, swing arm mount, shock/chassis mount, and bell crank/chassis mounts are all in the same location as they are on the bike.
Side note: Not sure why this Charles P guy copied a super old post and wrote nothing on it, I am tempted to remove it.
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Post by Liteway on Jun 27, 2013 20:34:40 GMT -5
Don't know why I assumed your engine, of a different size and manufacture , would be configured like mine. Dah.
Enjoying your postings, thanks.
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Post by noahkatz on Jul 14, 2013 19:08:19 GMT -5
In a high performance trike, getting the cg down, especially at the rear, can be an important advantage. For a particular CG height and fore/aft location, the end result in weight transfer and body lean is the same whether it was achieved by component placement at the front or rear (not that there's a lot of choice in the matter for the latter). |
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Post by Liteway on Jul 19, 2013 17:17:26 GMT -5
I was going on intuition. So I set up an experiment using a model. The same weight at the same height placed at the rear caused the model tip over at a shallower angle than when placed at the front, so I continue to believe my point is valid. Observation always trumps theory.
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Post by noahkatz on Jul 21, 2013 19:31:18 GMT -5
That's because placing the weight at the rear means less weight on the front, and it takes less lean to remove all of the weight from the inside front wheel.
That's why I said "For a particular CG height and fore/aft location"
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Post by captainamerica on Aug 5, 2013 22:12:37 GMT -5
June/July 2013 I closed on a house at the beginning of May and have spent all my time cleaning it up and retrofitting the garage to fit my needs, taller garage, three phase power, epoxy on the floor. The mill and lathe will make the journey to the new place in two weeks which will be the first time in two years I actually have them nearby so hopefully I will get to use them to their full extent. Next weekend I am taking the motorcycle class to get my M1 after only one motorcycle crash and a year of putting it off, my permit expires in early September. Also on the subject of bikes in July I got to go to Laguna Seca and see the masters run MotoGP, pit passes were sold out but it was still a blast to be that close to people that crazy. 65 degree lean angle, scraping knees and elbows on the pavement, while trying to pass someone at 100+ miles an hour in the corners and 200+ in the straights. Got to see "The Doctor" #46 finally (schumacher/senna equivalent of motoGP). Currently working on figuring out what radiator I want and how to fit it in, looking at a 22"x13" Griffin aluminum radiator with a 12" SPAL pusher fan for a grand total of about $300 from Summit Racing.     |
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Post by DaveJ98092 on Aug 6, 2013 2:07:42 GMT -5
Pulling air thru a radiator is more effecent that pushing it. At least in my testing that is.
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Post by captainamerica on Aug 7, 2013 14:25:05 GMT -5
I actually thought the reverse, based on the feeling of air flow standing in front of a room fan versus standing behind it. But the internet (besides you) says I am wrong, although I have yet to consult my technical books. Regardless, with my design a puller fan would put the radiator almost against the back of the drivers seat and I want some more room for air flow, plus it needs to push air into the oil cooler which is mounted just being the radiator. So the pusher decision was made more by the constraints of the design then by choice.
On a future version I may try to step away from the stock bike setup and route the exhaust out the sides to get more room but for now this is what I have.
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Post by mtntech on Aug 9, 2013 19:02:40 GMT -5
Use 2 ATV rads. One on either side of the passenger compartment.
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Post by captainamerica on Aug 11, 2013 15:01:38 GMT -5
That idea did come to mind, the piping is just more complicated and I was having a hard time sourcing the dimensions of oem parts. If the behind the driver setup doesn't work I plan to go that direction.
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Post by mtntech on Aug 12, 2013 10:06:05 GMT -5
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Post by DaveJ98092 on Aug 12, 2013 21:03:36 GMT -5
I like the looks of that radiator. Too bad the seller does not give dimensions. I may get one just for my water to air intercooler for my Turbo Suby wagon.  |
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Post by captainamerica on Aug 13, 2013 15:46:55 GMT -5
Mishimoto gives good dimensions, thanks for that link, apparently a yamaho rhino 700 side by side may give me the dimensions I am looking for. www.mishimoto.com/yamaha-yxr700-rhino-aluminum-radiator-08-11.htmlThey are a bit pricey and no one in town (Sacramento) seems to deal with used parts. I was hoping to get a broken one for cheap to use as a mock up. |
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Post by mtntech on Aug 13, 2013 19:05:32 GMT -5
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