|
SuzukiSavage.com
/cgi-bin/YaBB.pl General Category >> Rubber Side Down! >> Question on fuel delivery / gravity-wise speaking /cgi-bin/YaBB.pl?num=1211689370 Message started by Sandy Koocanusa on 05/24/08 at 21:22:49 |
|
Title: Question on fuel delivery / gravity-wise speaking Post by Sandy Koocanusa on 05/24/08 at 21:22:49 I know this is a gravity feed system. AND I know that fuel pumps exist for a reason. What I won't know until someone tells me is: Does the engine create enough vacuum to draw fuel from below the carb's level? I'm looking at my bike with more fuel capacity in mind. The back seat and sissy bar area are pretty well filled up with luggage (yes I went out and "packed" the bike just to figure out how for my first over-night trip.) At this time, I'm not ready to start modifying tanks from other bikes. I do have ideas, some of which include tanks/bladders below carb level. Failing that, does anyone know offhand about how much power those little electric fuel pumps draw? I'm in the spitballing stage here, so any and all input, ideas, accounts of failed attempts are welcome. To save some of you the frustration of REposting and wondering why I don't just read the forum, I have looked at the Tour Tank line and seen many of the "other brand" tanks some of you have adapted to the Savage. Neither is a viable option for me right now. Thanks, Jason |
|
Title: Re: Question on fuel delivery / gravity-wise speak Post by Gort on 05/25/08 at 00:22:25 In answer to your first question, no. The engine requires gravity feed. As for pumping the fuel into the carb, that would be a problem in engineering. Fuel pumps vary widely in PSI and flow rate. You would have to calculate what fuel pressure the carb bowl and it's gaskets could withstand, the effect the pump's PSI would have on the carb's needle and seat assy, and the flow rate requirements of the carb at maximum rpm. You would have to have a selector valve that would allow you to choose the aux. tank or the stock tank, otherwise the fuel pump would transfer its fuel into the stock tank. Someone else on this site added a gravity fed second tank to his Savage and posted a pic. It looked to be about 1 gal. size, was shaped like a soup can and was mounted horizontally on his rear fender. He was using it, so I assume it worked for him. Another rider posted a pic of his Savage with a gas can affixed to his rear fender, which he used to manually fill his stock tank. Remember, extra tanks hanging off the bike can burst into flames, splashing their contents all over you, if struck during an accident. Plus, have you noticed how the Savage tank is mounted on rubber bushings? You have to be very careful when mounting extra tanks. Do you really need the extra tank? Maybe its better to play it safe and just stop more frequently at the gas station? |
|
Title: Re: Question on fuel delivery / gravity-wise speak Post by Sandy Koocanusa on 05/25/08 at 06:10:18 Thanks for the reply Gort. I figured the vacuum idea was a no go. I hadn't thought about pressure regulation, etc. that you discussed, so you saved me a lot of goofing around with the pump idea as well. However, to answer your final question: There are a couple of places I'd like to go eventually where 2.7 gallons won't quite cut it. When I went up to Glacier Park last week, I filled up at the last station available. Then I tooled up through the mountains to the divide and back down. As I recall, I had a little over 90 miles on the clock when I got back to the station. I figured I still had a gallon of gas or so. I filled up and put in 2.3. I guess the mountains, the altitude, and the headwind all conspired against me. Locally, there are plenty of fuel points and I don't mind stopping. But there are areas of Montana where that uneasy feeling will start to grow, and others where I certainly won't have enough fuel to get from point to point. I guess I'll have to figure out a way to strap a jerry can to the thing for longer hauls. Thanks again. |
|
Title: Re: Question on fuel delivery / gravity-wise speak Post by thumperclone on 05/25/08 at 06:39:34 the bs carb is vacume type to open the petcock we have no "off"for gas flow cept when the engine is off..do a search in tech section for aux. tanks others have installed there is a kit offered that mounts to luggage rack..this old butt looks forweard to a break every 100 miles..beatduck carried a gas can on his X country adventure..think paladin mapped his route to allow for gas stops on his run.. search these members posts for more info.. |
|
Title: Re: Question on fuel delivery / gravity-wise speak Post by buttgoat1 on 05/25/08 at 20:31:10 I was just thinkin.......... that a vacuum/pressure diaphragm pump might work. I have a yamaha gas golf cart and it has a fuel pump that works by crankcase pressure, the motion of the piston creates the crankcase vacuum/pressure and it pumps. One of those could mount somewhere on the frame and keep the carb happy, could use some sort of tee in the fuel line, at the very least it could refill the main tank by backflowing. all it would take to turn on and off would be a ball valve to stop the crankcase pressure. Im gonna hafta ponder this one a while. |
|
Title: Re: Question on fuel delivery / gravity-wise speak Post by justin_o_guy2 on 05/25/08 at 20:47:51 Hauling a bit of gas in a real, no kidding, NEW, not some old, faded, brittle plastic gas container, would be easier than a solid mounted setup. You can dump it in the tank & go, no engineering required. It can be wrapped in a trash sack & put inside a slwwping bag, so it wont get smashed in a crash & you wont get hit with flaming gas. You can strap stuff across the bars/forks & all over the rear of the bike. Hiding a gallon container here & one there will give you another 90 to 100 miles, maybe more. Hassle? Yea, maybe, but engineering a gas tank into place is no one hour project either. Once the trip is done, you wont have a gas tank in the way & passengers will be in Bidniss again. Just my opinion, it is worth every dime you paid for it ^& comes with a money back guarantee/ |
|
Title: Re: Question on fuel delivery / gravity-wise speak Post by Sandy Koocanusa on 05/25/08 at 21:08:28 Justin_o_guy2, I have come to the conclusion that you have come to the right conclusion. I'm not going to spend the money for the name brand aux tanks, and I'm probably not clever enough to design and build one of my own. I don't think carrying a gas can behind me can be any more dangerous than wrapping my legs around one at 70 mph. So I spent a little time staring at the bike and scratching my head today. The carpenter in me has an idea. I'll have to remove the trunk tomorrow and give it a try. If it works out, I'll let you know. If it doesn't, I'll deny this conversation ever took place. For balancing purposes, a gallon of gas weighs about 7 lbs, right? It did when I was a kid, I think. |
|
Title: Re: Question on fuel delivery / gravity-wise speak Post by justin_o_guy2 on 05/26/08 at 14:03:14 I call it 8, its lighter than water, 8.3 ish, but not a lot, IIRC. |
|
Title: Re: Question on fuel delivery / gravity-wise speak Post by Gort on 05/26/08 at 17:16:32 Take a look at this... no metal to spark or heat up if hit, and if carried loosely somewhere, might fly off and away from the bike in an accident. And its dirt cheap. Just a thought. http://www.genuinehotrod.com/PartDetail.asp?PartId=5606 http://www.flatcan.co.uk/technical.html |
|
Title: Re: Question on fuel delivery / gravity-wise speak Post by bill67 on 05/26/08 at 17:35:35 I don't think thats make to carry gas ,just to have if you run out and have to walk or get a ride to a gas station. |
|
Title: Re: Question on fuel delivery / gravity-wise speak Post by Dj12midnit on 05/26/08 at 17:39:45 Gort I put one of those in my wifes van so If i do run out of gas she can bring me some. |
|
Title: Re: Question on fuel delivery / gravity-wise speak Post by Gort on 05/26/08 at 18:00:22 3E306B6837333E34332E5A0 wrote:
darn! The most obvious answer is the one no one ever thinks of! Sandy doesn't need a spare gas tank...he needs a cell phone so he can call his woman and instruct her to bring him some gas, and some take-out while she's at it! |
|
Title: Re: Question on fuel delivery / gravity-wise speak Post by skatnbnc on 05/26/08 at 18:24:20 I cannot believe all you GUYS saw that fuel container and did not leap to the obvious... http://img.alibaba.com/photo/201806296/URINE_CONTAINER.jpg Portable, lightweight AND multiple uses!! |
|
Title: Re: Question on fuel delivery / gravity-wise speak Post by Sandy Koocanusa on 05/26/08 at 18:44:08 4A797F637E790B0 wrote:
darn! The most obvious answer is the one no one ever thinks of! Sandy doesn't need a spare gas tank...he needs a cell phone so he can call his woman and instruct her to bring him some gas, and some take-out while she's at it![/quote] If I whined and begged, it might work. Except for one problem. The places I need to haul gas to don't have cell towers. Believe it or not, there are still places where a cell phone won't work, and they are ALL in Montana. I have a one gallon plastic can that I am going to contrive a hanger for. I may have it written on my tombstone but I just don't see that as any more dangerous than the tank I'm sitting on. I was going to hang it similarly to a saddlebag on the left side. Then today, some complete badguy passed me, cut between Kay and I, and then tailgated her for about 5 miles. When I got a chance to pass him so I could back him off of her, he pulled out IN FRONT OF ME and passed her and the car in front of her. Now I'm thinking about hanging it on the right, above the muffler, so I can just puncture it with a jackknife and spray burning fuel all over creeps like that. I'm still a bit miffed, in case it doesn't show through my cherub-like demeanor. |
|
Title: Re: Question on fuel delivery / gravity-wise speak Post by verslagen1 on 05/26/08 at 18:45:30 Hmmm, same color... does it run on that? |
|
Title: Re: Question on fuel delivery / gravity-wise speak Post by Sandy Koocanusa on 05/26/08 at 18:48:23 Skatnbnc, that idea is even better than mine. Flaming gas would get his attention, but your container would be the gift that keeps on giving if I could manage to get it on his heater intake. ;D |
|
Title: Re: Question on fuel delivery / gravity-wise speak Post by skatnbnc on 05/26/08 at 19:06:24 4C4A4B4954524948260 wrote:
If you are gonna get serious, make a hose attachment so you can AIM the fuel spray as you ignite it.... ::) |
|
Title: Re: Question on fuel delivery / gravity-wise speak Post by skatnbnc on 05/26/08 at 19:08:49 687B6C6D727F797B702F1E0 wrote:
Uh huh ~ Lots of similarities; strong aroma, same colour, can be used as a weapon in some states, eats through paint... Why don't you give it a try and let us know how it all works out.... :D |
|
Title: Re: Question on fuel delivery / gravity-wise speak Post by Sandy Koocanusa on 05/26/08 at 19:28:58 With my luck, I'd hit a strong cross-wind just as I opened fire. Gotta hit the sack. I'm getting goofy, and 0430 comes early around here. |
|
Title: Re: Question on fuel delivery / gravity-wise speak Post by jomiyo on 05/27/08 at 06:54:05 It isn't a spare tank or permanent, but most camping stores carry a handy little one liter can that is made for fuel. Also handy about this can is it fits perfect in a cup holder. pick up a hip side water bottle holder and you have spare fuel that can be strapped anywhere. Perfect for the long haul. http://www.rei.com/product/695244 http://www.rei.com/product/721392 Works wonders, was a tip from the pop. he has two and has taken them across the country on multiple occasions. make sure that if you don't have to use them, you use the fuel when you fill up next and re-fuel them. -jordan |
|
Title: Re: Question on fuel delivery / gravity-wise speak Post by bill67 on 05/27/08 at 07:14:25 Get a can like Miranda Lambert had in song Kerosene and your problems will be over |
|
SuzukiSavage.com » Powered by YaBB 2.2! YaBB © 2000-2007. All Rights Reserved. |