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Post by lansingscootguy on Dec 28, 2014 7:24:59 GMT -5
 This modification is pretty self explanatory. Go to Home Depot buy a 4 inch metal elbow in the heating and cooling department. 1 can of cheapo black spray paint. Both of these will cost you less than $6. Remove the 4 8 millimeter screws holding your fan housing on your motor. Before I forget you're going to need for self tapping metal screws. Obviously before you attach the elbow to the fan housing you might want to paint it first. Put your four screws in 1 top 1 bottom 1 right side one left side be sure to aim the elbow forward that way it forces the air into it to help cool your motor. Reattach the housing to your motor using the 4 8 millimeters bolts that you took out and there you go I hope you this is useful to you. |
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Post by katastroff on Dec 28, 2014 7:30:58 GMT -5
you got pictures?  |
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Post by tiny on Dec 28, 2014 11:30:36 GMT -5
Ugly but works
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Post by katastroff on Dec 28, 2014 11:36:10 GMT -5
Would look awsome on a rat/redneck/steampunk style scooter.  |
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Post by 90GTVert on Dec 28, 2014 12:44:38 GMT -5
Watch your leg on the metal if you're one of the folks that rides in shorts and flip flops.
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Post by birdman on Dec 28, 2014 13:32:19 GMT -5
There are companies that make rather stylish air ducts to do the same thing.
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Post by Elektrey on Dec 28, 2014 14:05:58 GMT -5
I've thought about doing this, but not because of the cooling benefit. I read that Aircooled engines lose about 2hp compared to liquid cooled because of the added strain. I thought maybe funneling air into the fan would reduce that strain and maybe add some horsepower. Not sure how much or if it would even work, just a thought.
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Post by 90GTVert on Dec 28, 2014 14:12:54 GMT -5
I don't think you'd notice any gains unless you could eliminate the fan or use a smaller fan because of the scoop. As long as the scoop is at least as large as the inlet on the shroud and catching air it should improve cooling vs the exact same setup without the scoop when moving. Even if you could make it really efficient when moving so it would cool the cylinder, I don't see how you'd get it to work at idle when there's no airflow and with much less flow from the fan or without a fan.
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Post by Clank on Dec 28, 2014 14:17:19 GMT -5
Son of a Redneck son of a Rechecks son!! Don't let you're NASCAR buddies see that. I bet it'll corner right real quick on a windy day.
But on a serious note, what about ground clearance when turning right? That looks like it's out there a bit. It would really suck turning in to toot m totem and get high-sided.
How much of a temperature drop are you getting from it? You didn't mention anything about what kind of change you got from your mod.
I'll give you an A for effort and don't take this the wrong way I'm not trying to discourage you. I love the fact that you're thinking of different ways of doing your tuning. You can ask any Veteran or Pro on this forum, I get bashed for allot of my ideas, cause I'm always attempting something different. I take some of it as constructive criticism, some point things out that I either overlooked or was just unaware of some interface or problem created by the mod. Others I just ignore and strive harder to make it practical and functional. But the majority are supportive and throw in thier own views and ideas that actually help out in the development. Take my modified variator for instance. The majority said it was dumb not gonna work and so on, but guess what, it did work and surprisingly better than I'd anticipated. I still need to change a few things as always endurance and duration testing is the true test of practical or not.
Don't get discouraged keep that brain thinking and maybe in a few months you can call it your practicality prototype to determine whether or not to forward with it as is, forward but different direction, or scrapped and back to the drawing board with valuable information as knowing what didn't work. Some times that's more valuable know what didn't work and why. That's why it's still so nice when folks reveal their failures.
Keep up the good work and forward thinking. Im really interested in your data on temperature change created by your modded air scoop. Please post soon brother.
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Post by Clank on Dec 28, 2014 14:21:24 GMT -5
I've thought about doing this, but not because of the cooling benefit. I read that Aircooled engines lose about 2hp compared to liquid cooled because of the added strain. I thought maybe funneling air into the fan would reduce that strain and maybe add some horsepower. Not sure how much or if it would even work, just a thought. That's not likely as a stock 49cc is only about 2hp. I don't think taking the fan off will double it, but weather is fair to shitty today. So I'll tell you what you go pull your fan and see if your notice 2ponys and I'll do the same and post back later this evening or tomorrow. |
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Post by Elektrey on Dec 28, 2014 14:24:07 GMT -5
I've thought about doing this, but not because of the cooling benefit. I read that Aircooled engines lose about 2hp compared to liquid cooled because of the added strain. I thought maybe funneling air into the fan would reduce that strain and maybe add some horsepower. Not sure how much or if it would even work, just a thought. That's not likely as a stock 49cc is only about 2hp. I don't think taking the fan off will double it, but weather is fair to shitty today. So I'll tell you what you go pull your fan and see if your notice 2ponys and I'll do the same and post back later this evening or tomorrow. I'm specifically talking about a tuned 2t. which would have 7-10 hp. Maybe not 2 hp but I do know that liquid cooling takes less energy. |
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Post by Clank on Dec 28, 2014 14:28:30 GMT -5
That's not likely as a stock 49cc is only about 2hp. I don't think taking the fan off will double it, but weather is fair to shitty today. So I'll tell you what you go pull your fan and see if your notice 2ponys and I'll do the same and post back later this evening or tomorrow. I'm specifically talking about a tuned 2t. which would have 7-10 hp. Maybe not 2 hp but I do know that liquid cooling takes less energy. Again go take your scoot around the block, park it, remove the fan, let it cool a little and run it around the block and see if there's a noticeable difference. I'll do the same on my scoot and we'll post our results. |
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Post by katastroff on Dec 28, 2014 16:20:17 GMT -5
Sometimes a good idea just dont have any practical use.
I know you wanted to improve your ride but your perfectly good idea hust dont add any real benefits.
Exemple:
Air conditioning in motor véhicule is great but on a motor bike, it aint so great.
Best and cheapest way to improve your top speed: tuck in while riding.
Just my 2 cents.
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Post by lansingscootguy on Dec 28, 2014 18:47:49 GMT -5
I was told by the guy that put my bbk on that how far and how long I ride will burn up my cylinder. Do this to take care of that. My scooter has never ran right straight out of the crate. And now with the 80cc bbk on it it still doesn't run right. I am getting very frustrated dumping money into this with no improvement.
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Post by niz76 on Dec 28, 2014 20:33:41 GMT -5
Correct jetting is probably the most important "mod" to keep your engine cool. Did they upjet your carb when BBK was installed?
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