STAIN
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Ok. I will change my couplers to a larger 5/8 size and try to soften the turn at the top.
sideshowBob
Lifetime Member
That is a very nice clean bypass!Couple issues that I see. And I speak from experience on seeing a machine here that used a coupler to connect two hoses on the down side.
Like Bob said above, the 90 you used is a big bottle neck, and the second is the coupler you used in the middle of the hose is also a bottleneck. I've only had one sled thru here that blew the tank seal out on it after having had a coupler on it like this connecting two hoses in the same spot, I can only suspect it froze up and took the tank seal out for a second time. Another sled had a hose kink and that downward is close to kinking over time.
I've tried making the hose a 1/2" ID before and it came very close to freezing up, 5/8" never freezes or even comes close to freezing up. Even though the hole in the tank is only 1/2" ID, The fall from the loop on down needs to be 5/8 all the way thru. I learned form Louie Wirbel who installs rain gutters the the larger downward fall needs to be large and free of obstructions to keep from freezing and I believe him.
This is what I have been doing the last few years and it works out great. The 90 1/2" street elbow epoxied into another 90 elbow. Both have the large portion into the stretched out 5/8" fuel line and it makes the corner perfectly. The elbows have the same ID as the 5/8" hose and it runs straight down thru the running board with a 45 deg slash cut to the rear of the sled. Never had any sled done like this freeze up or have kinked hoses.
View attachment 174338
74Nitro
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Way too much heat in that area I would think for it to ever freeze.The only potential problem I see is the 90 degree elbow. It makes a nice neat install but creates a bit of a bottle neck and potential freeze up area in the bypass hose. Most of the bypasses I have seen, including mine, maintain a nice gentle curve radius where the hose changes vertical directions from up to down.
74Nitro
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I'm sure many here will remember the Cat two stroke sleds that had the vent from the exhaust valves. Cat had a bracket right near the exhaust outlet for the drain.
It's when the sled sits after riding that creates the ice blockage. The open loop hose leaves a fair amount of frothy mess on the floor after a long ride. This is the stuff that creates the blockageWay too much heat in that area I would think for it to ever freeze.
74Nitro
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Ok, I see.It's when the sled sits after riding that creates the ice blockage. The open loop hose leaves a fair amount of frothy mess on the floor after a long ride. This is the stuff that creates the blockage
KnappAttack
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2017 Sidewinder LTX-LE
Ok. I will change my couplers to a larger 5/8 size and try to soften the turn at the top.
Stop! I'm telling you to stop and start over and get rid of any coupler on the downspout to prevent a problem like I've seen before on a machine. Go get 5/8" fuel line and just do it right with NO coupler so it doesn't freeze and blow a seal on ya.
If you can make a big loop without any couplers great, but some hoses want to kink and why I started doing the 180 degree at the top.
If seen kinked hoses and the couplers on the downspout freeze before so do it right.
Last edited:
SnoWarrior
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Just finished mine on the new sled. Removed both hoses from the rollover valve, pulled wires and taped, plugged the back of the air box, installed 5/8" fuel hose.
I ran the end of the hose to the bottom chaincase drain area. Tis is what I had for 5 years on my 2018, and never a problem.
I ran the end of the hose to the bottom chaincase drain area. Tis is what I had for 5 years on my 2018, and never a problem.
Simplespeed
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Mine done exactly the same, no issues either!
sideshowBob
Lifetime Member
I have had the roll over bypass installed on my sled since the sled was brand new from advice/info from this original post in 2018 by KnappAttack.
Mike recently posted a pic of his current setup which was much cleaner then my original setup so I copied it. As always great info on our Forum!
Thanks Mike!
Pictures speak for themselves
My Original Bypass 2019 1.0
My Updated Bypass 2023 2.0
Mike recently posted a pic of his current setup which was much cleaner then my original setup so I copied it. As always great info on our Forum!
Thanks Mike!
Pictures speak for themselves
My Original Bypass 2019 1.0
My Updated Bypass 2023 2.0
blevis213
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Doc Harley
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180° fitting really clean things up. Nice find
sideshowBob
Lifetime Member
We are going to have to rename this to the "Mike Mod"
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