Gas Tank Questions

[lragan]

So, I am waiting to see where I hear the first explosion -- from Plano or from South Florida...

[Charles S Otwell]

[Here are a couple of threads I talked about this, one has Charles measurement in theory  what could be gained/quote]

Terry I done told you it weren't no theory, I filled the top of the tank up to the bottom of the neck and it held 1 and 1/2 quart ( tank was upside down with no bottom). That is the absolute most it will hold with no air pockets, so just drilling a hole in the neck won't even net you that much.

[TLRam1]

and yes you did Charles, in theory it will hold that much  but it's not an absolute when you factor in the air pocket, I'm with ya,  and will use this valuable info at some point.

[TLRam1]

Let me add something to this...

I fill it up pass the neck anyways, takes a while though, how much more I would gain I don't know but by drilling the hole I could get it past the neck and fill the tank up quicker. So it's not just to get more fuel in the tank but do it faster with less problems of splashing. If I could gain another quart (10 miles), that would be pretty for me.   

[TLRam1]

So, I am waiting to see where I hear the first explosion -- from Plano or from South Florida...

Florida for sure, I wouldn't admit it.  Hoot you need to strike a match to insure all of the fuel is out of the tank......if anyone else reads this, this is a joke, ok, Hoot already knows to use a match.

[hootmon]

You folks don't know me as well as my wife does.. She replaced all of my tools with Nerf tools .
So, I'll be using a Nerf Drill bit, So I don't have to worry about sparks & stuff...
My wife won't let me play with matches ... anymore...

[dgc67]

No offense guys, but it sure seems like a lot of thought and effort for a few extra cc's of fuel.  IMO

[lragan]

No offense guys, but it sure seems like a lot of thought and effort for a few extra cc's of fuel.  IMO

You call it a few cc's, I called it a few thimblefuls.  Neither of us see the benefits very clearly, it appears.

The essence of the debate is just how much more fuel can you stuff in there?  I think we have it bracketed:

1) Charles set the absolute maximum at 1.5 quarts, as I read his note above.

2) The neck itself is about (I am going to approximate here, because it is 27 degrees outside and I don't want to uncover the bike to measure) 5 cm across and 7 cm deep.  By my calculator, that shows 137 cc.  That is if you filled it right to the very tippy - tip - top, probably spilling gasoline over the tank and down onto the engine.  So call it 100 cc's or 0.1 liter.

The extra fuel one could stuff in the tank falls between these two limits.  Should we start a pool on the actual number?

By my understanding, one can access most of the extra capacity by rocking the bike back and forth so the air flows out the vent tube, and gradually putting more gas in as a result.  I have observed that the level drops a bit when you rock the bike.  Maybe you access all the extra space with this technique, maybe not.

I think Terry's point is that he hopes to save time, not necessarily add more gasoline at each fill-up.

As for me, I don't get in that big a hurry, as I have a firm rule that I never hurry while on the bike.  It is relax time for me, and I don't tolerate time pressure in my goof off time.  As for extra range, my bladder never lasts that long anyhow.

[L J VFR]

  As for extra range, my bladder never lasts that long anyhow. 


+1 on that Lawrence.  I seem to have to "go" more when I am riding as well.   When I ride with my uncle and he is on his valkyrie, my eyes seem to start floating because he wants to go a rediculous distance like 150 miles   without stopping.

[dgc67]

ESPECIALLY on the motorcycle!!  Although I have found wearing loose wasted pants helps. 

[Charles S Otwell]

When I ride with my uncle and he is on his valkyrie, my eyes seem to start floating because he wants to go a rediculous distance like 150 miles   without stopping.

He wouldn't go 150 miles on my Valk, (I'm getting about 28 mpg) I have to fill up before my wife does on the Magna.

[hootmon]

He wouldn't go 150 miles on my Valk, (I'm getting about 28 mpg) I have to fill up before my wife does on the Magna.

Do you have a 97 Valk???

[Charles S Otwell]

98, I'm hoping it just needs Sea Foam and lots of riding..

[Curtis_Valk]

I agree with Lawrence, but didn't think it was fair to put my foot forward since I've got 6.9 gallons to play with.  However when I had my '99 Magna I never fretted with getting more fuel in.  As a matter of fact, I never fill up while sitting on the bike for safety reasons so it's always on the side stand.  I usually fill to the neck then give it a couple of extra squirts for good measure and then I'm off.  Same technique I've always used, even with the small 3rd Gen Magna tank.

Curtis

[TLRam1]

I agree with Lawrence, but didn't think it was fair to put my foot forward since I've got 6.9 gallons to play with. 

Curtis

I don't mind your 2 cents, I like trying something different to get more out of and in it, that's quicker, easier for not too much time or difficulty to try.