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  #921  
Old 11-03-2014, 08:52 PM
Rudz Rudz is offline
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I found a plastic bag in my tank
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  #922  
Old 11-04-2014, 01:03 AM
MEASURE TWICE MEASURE TWICE is online now
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Default Re: Motorized Bicycle Take a Tip...Leave a Tip

If it is a metal tank maybe that is the new kind of tank liner that does not rust?

MT
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  #923  
Old 12-05-2014, 08:32 PM
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Davezilla Davezilla is offline
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Dunno if I posted this one in here before, but for those clear plastic type fuel lines and limited space, you can form them so they can have tight bends without kinking by first deciding where the line needs to be routed, then use a piece of 12 or 14 gauge solid copper wire as your mandrel...
slip the fuel line tubing (or any clear plastic type vinyl tubing that needs to be formed either for a neater appearance or to eliminate kinking) over the solid copper wire,

bend to the shape needed,

dip in boiling water for 30 seconds to 1 minute,

remove from the boiling water and let cool, cold water can be used to speed up cooling.

slide the tubing off the copper wire, a little WD40 really helps here if several bends are needed in the same piece or really tight bends are needed.

The tube will hold this shape and no kinks no matter how tight the bend is made.

I've done this on my Suzuki Intruder 1400 when it needed the fuel lines replaced and the factory lines are the only ones that'll work because of the really tight bends that were needed. I was able to do 90 and 180 degree bends at about a 1 inch bend radius using a section of 12 gauge solid strand wire and 5/16" tubing to make exact duplicates of the original lines. No kinks, they're shaped perfectly and hold their shape, and the tubing remains pliable and flexable as it was before bending.

This can be used for these bikes when a really short fuel line is needed with a really tight bend, or to make your vacuum lines on your car look really nice and neat... or whatever else you can think of.
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  #924  
Old 12-05-2014, 08:38 PM
curtisfox curtisfox is online now
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Default Re: Motorized Bicycle Take a Tip...Leave a Tip

WOW! that's KOOOOL good to know. Now just got to remember that............Curt
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  #925  
Old 12-05-2014, 10:46 PM
Jonda500 Jonda500 is offline
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Default Re: Motorized Bicycle Take a Tip...Leave a Tip

A great tank mounting technique is to turn the two straps over and put the them on top of the frame sitting under the brake cable(and or gear cable(s)), then lower the tank onto the frame guiding the threads through the clamps and use a second pair of clamp straps to secure to the frame with three 10mm nuts between the clamps on each thread so you can fully tighten the 8mm nuts. (If your cables need more room simply add nuts or washers on to the tank threads before installing. If you don't have spare clamps you can make a couple out of the kits muffler strap that no one ever installs.)

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  #926  
Old 12-06-2014, 02:51 AM
MEASURE TWICE MEASURE TWICE is online now
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Quote:
Originally Posted by Davezilla View Post
Dunno if I posted this one in here before, but for those clear plastic type fuel lines and limited space, you can form them so they can have tight bends without kinking by first deciding where the line needs to be routed, then use a piece of 12 or 14 gauge solid copper wire as your mandrel...
slip the fuel line tubing (or any clear plastic type vinyl tubing that needs to be formed either for a neater appearance or to eliminate kinking) over the solid copper wire,

bend to the shape needed,

dip in boiling water for 30 seconds to 1 minute,

remove from the boiling water and let cool, cold water can be used to speed up cooling.

slide the tubing off the copper wire, a little WD40 really helps here if several bends are needed in the same piece or really tight bends are needed.

The tube will hold this shape and no kinks no matter how tight the bend is made.

I've done this on my Suzuki Intruder 1400 when it needed the fuel lines replaced and the factory lines are the only ones that'll work because of the really tight bends that were needed. I was able to do 90 and 180 degree bends at about a 1 inch bend radius using a section of 12 gauge solid strand wire and 5/16" tubing to make exact duplicates of the original lines. No kinks, they're shaped perfectly and hold their shape, and the tubing remains pliable and flexable as it was before bending.

This can be used for these bikes when a really short fuel line is needed with a really tight bend, or to make your vacuum lines on your car look really nice and neat... or whatever else you can think of.
===============

Thanks for the tip!

I am thinking of using this so that a bend should have less crimp at a bend, that could take away from the inner diameter that would make more restrictive flow of the gravity feed in a fuel line.

I think I'll have to try this. Only I have had problems with some clear tubing from the hardware store made specially for gasoline, and it not sealing well on the connection. I have however found the black rubber lines compress and seal well with the worm gear drive strap hose clamps really good. I bet clear tubing is only going to take the bend and keep it as it has something to do with the kind of material the tubing is made of.

Any idea for a specific type of clear tubing that will hold the shape form and also seal well?

MT

Last edited by MEASURE TWICE; 12-06-2014 at 02:54 AM.
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  #927  
Old 12-07-2014, 09:53 PM
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Davezilla Davezilla is offline
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Quote:
Originally Posted by MEASURE TWICE View Post
===============

Thanks for the tip!

I am thinking of using this so that a bend should have less crimp at a bend, that could take away from the inner diameter that would make more restrictive flow of the gravity feed in a fuel line.

I think I'll have to try this. Only I have had problems with some clear tubing from the hardware store made specially for gasoline, and it not sealing well on the connection. I have however found the black rubber lines compress and seal well with the worm gear drive strap hose clamps really good. I bet clear tubing is only going to take the bend and keep it as it has something to do with the kind of material the tubing is made of.

Any idea for a specific type of clear tubing that will hold the shape form and also seal well?

MT
There are different types of these clear plastic fuel line tubings, the cheapest being the vinyl tubine like aquarium tubing, it can be used for fuel temporarily because it will harden fairly quickly after gasoline is introduced to it, then there's the polyethlyne type that can resist gasoline a little better but still hardens up and becomes brittle, which also leads to leaking, this stuff is much better than the vinyl type but still not the best. The Tygon fuel lines tho can resist gasoline and alcohol best and won't become brittle over time.

The other issue is the clamping... These lines do best with the spring type pinch clamps or fuel injection hose clamps, the worm screw type radiator hose type clamps don't work so well for any tubing under about 3/8" or 10mm simply because they won't stay round once tightened up past a certain point.
The fuel injection hose type clamps are the most secure type and will stay round, but the springy pinch clamps will usually suffice when there's no pressure to deal with.

Another thing to look out for is that some of these lines come in standard and metric sizes. 6mm looks a lot like 1/4" but it's slightly smaller, a 1/4" hose will slip over a 6mm barb but won't be as tight as if it was over a 1/4" barb, same as a 7mm hose over a 1/4" barb, it'll fit but it'll be loose enough for the fuel to either leak or harden up a cheaper type of plastic line. This can be avoided by measuring the hose barbs then ordering the correct size line. About the only standard size that's compatible with metric would be the 8mm or 5/16" they're the closest match. This mis match in size between standard and metric becomes more of a problem under 1/4" or 7mm and less of a problem above 1/2" but can still be a problem if plastic lines are being used.

Not really going against what you're saying, but just a little more info since these lines look quite the same but can be very different in size and how well they handle fuel. my tygon lines have lasted 4 years so far without becoming hard or leaking, but the cheaper line I used on the Sportster started to leak about 6 months after installation.
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  #928  
Old 12-07-2014, 11:32 PM
crassius crassius is offline
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Default Re: Motorized Bicycle Take a Tip...Leave a Tip

a bit of shrink wrap for wiring is good to put on fuel fittings that are a bit undersized
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  #929  
Old 12-08-2014, 12:00 AM
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maniac57 maniac57 is offline
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Default Re: Motorized Bicycle Take a Tip...Leave a Tip

I prefer zipties for small lines.
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  #930  
Old 12-08-2014, 02:42 AM
MEASURE TWICE MEASURE TWICE is online now
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I guess a scientific supply place would have the Tygon Fuel type tubing. I do recall having that stuff for chemistry usages and it was softer but clear like the stuff I bought at OSH. I think I still have the package from OSH and could get the brand name, but I know it was not Tygon. Just did Google search, lots on Ebay. 19 bucks after shipping cost totaled for 10ft translucent yellow gas fuel line Tygon brand.

Anyway I was able to put the line I have been using without a tight bend, so will stay with the black rubber type, but thanks for that forming the tubing idea!

See this:
http://www.ebay.com/itm/Genuine-Clea...item1e92d138e5
Would this be stuff that would take the bend shape and stay.

MT

Last edited by MEASURE TWICE; 12-08-2014 at 02:44 AM.
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