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Discussion Starter #1
Hey guys, I see you got a new forum and all the old stuff was removed. I've been getting some bowfishing calls this week and it reminded me that I should get active on this forum again. So, I'm re-posting my old welcome thread. I'd be very interested in hearing from those who are already running the Hascon fans as well. There should be quite a few out there now.


Hello Everyone,

I've been getting a ton of calls from you guys for fans lately, thank you! I've also been told by multiple people that I should get on this forum to help answer questions, so here I am.

I have many years of experience with hovercraft (over 15) including fan/prop setups for those craft on everything from 5 horse kid toys through 300+ horse monsters. Much of this knowledge is directly applicable to what you guys do, since your boats are basically a simplified hovercraft thrust system.

Until people started calling about fans, I knew absolutely nothing at all about bowfishing boats. Now, after several months of speaking with some very friendly customers in the sport, I can now say I've moved up to slightly more than nothing. So, I'll be sticking to this "fan setups" category and trying to check it on occasion to help answer questions.

Just don't ask me "what will it take to move my Acme Model 5 bowfishing boat at 15mph through a swamp" because I have absolutely no idea. I can, however, answer about anything you want to know about fans or props and setting them up!

I look forward to working with you guys!
 

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hey i talked to you earlier lol i just thought id let you know ill probably be ordering my new motor here in the next few weeks gonna be getting a 16 horse power also im going to get one of your reductions...
 

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yea i would like to ssee a picture of the reductions you mmake
 

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Discussion Starter #5
I've attached a few pics of the way I do reduction drives. Yours can be even more simple then either of these since the distance between the motor and top shaft is much less and you don't have to deal with centering the fan in a duct. Sorry, but I wasn't able to find any photos of a really simple V-belt drive like I'd recommend for you guys, but the principle is the same.

The 2 stroke and 10F pics show and HTD synchronous drive, but it would be done the same way with a V-belt drive (which is more economical). The 2 stroke drive is about 90 horsepower, so your frame could be much lighter. Also, you wouldn't need an idler for tension, you can just tension the belt by spacing the engine or top shaft with washers. I drew a quick sketch for how I'd do it on a low (under 30 horse) power application like a bowfishing boat.

This can all be done real quick and easy with square tube steel and drilling a few holes for the engine and bearings. It only takes about an hour to make one.

A V-belt setup costs around $200 and the synchronous HTD drives cost around $400. The v-belt pulleys are steel, the HTD is aluminum (weight is a big deal on hovercraft). Since you guys are racing, are almost all lo

If there is much interest for a ready-made setup, I might just start manufacturing these specifically for bowfishing boats. Let me know.
 

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I've attached a few pics of the way I do reduction drives. Yours can be even more simple then either of these since the distance between the motor and top shaft is much less and you don't have to deal with centering the fan in a duct. Sorry, but I wasn't able to find any photos of a really simple V-belt drive like I'd recommend for you guys, but the principle is the same.

The 2 stroke and 10F pics show and HTD synchronous drive, but it would be done the same way with a V-belt drive (which is more economical). The 2 stroke drive is about 90 horsepower, so your frame could be much lighter. Also, you wouldn't need an idler for tension, you can just tension the belt by spacing the engine or top shaft with washers. I drew a quick sketch for how I'd do it on a low (under 30 horse) power application like a bowfishing boat.

This can all be done real quick and easy with square tube steel and drilling a few holes for the engine and bearings. It only takes about an hour to make one.

A V-belt setup costs around $200 and the synchronous HTD drives cost around $400. The v-belt pulleys are steel, the HTD is aluminum (weight is a big deal on hovercraft). Since you guys are racing, are almost all lo

If there is much interest for a ready-made setup, I might just start manufacturing these specifically for bowfishing boats. Let me know.
Dont take this the wrong way, but I do not see a reduction like that working for our applications. The reduction unit (all of it) needs to be bolted to the engine, since the motor, reduction,shroud, and prop combined are one single rotating mass on 99.99% of all fanboats. There is that one wild hair stationary fan with mini airboat rudders that this set up would easily work on, but in order to make that work for what most have in mind, the money you save on your design will be spent twice over making the fabrications needed to make that unit a solid rotating mass on a typical fanboat.

You guys looking to build reduction fans need to talk with some fanboat owners with some real hands on experince before you start designing your own build. There are plenty of folks on here that will help ya out.
 

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i already have a design for that reduction style that is attached to both the shroud and motor mounting plate it is basically a clone of a arrowprop reduction
 

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Dont take this the wrong way, but I do not see a reduction like that working for our applications. The reduction unit (all of it) needs to be bolted to the engine, since the motor, reduction,shroud, and prop combined are one single rotating mass on 99.99% of all fanboats. There is that one wild hair stationary fan with mini airboat rudders that this set up would easily work on, but in order to make that work for what most have in mind, the money you save on your design will be spent twice over making the fabrications needed to make that unit a solid rotating mass on a typical fanboat.

You guys looking to build reduction fans need to talk with some fanboat owners with some real hands on experince before you start designing your own build. There are plenty of folks on here that will help ya out.

As I have stated before, I concur with your thoughts exactly.
 

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with some thought and some good fabrication i believe it can be done and have the same results as one of them arrowprop reductions.
 

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Discussion Starter #12
Dont take this the wrong way, but I do not see a reduction like that working for our applications. The reduction unit (all of it) needs to be bolted to the engine, since the motor, reduction,shroud, and prop combined are one single rotating mass on 99.99% of all fanboats. There is that one wild hair stationary fan with mini airboat rudders that this set up would easily work on, but in order to make that work for what most have in mind, the money you save on your design will be spent twice over making the fabrications needed to make that unit a solid rotating mass on a typical fanboat.

You guys looking to build reduction fans need to talk with some fanboat owners with some real hands on experince before you start designing your own build. There are plenty of folks on here that will help ya out.
Don't worry about offending me. I'm just throwing out ideas since people keep asking me about reductions when they call to order fans. Is there any way you can clarify your reasoning with a photo or two? You say this wouldn't work because it has to be bolted to the motor... this IS attached to the motor and it would all rotate as one unit. The only difference between this and the arrowprop unit is that this uses two pieces of tubing welded to your base plate to hold the top shaft instead of an expensive piece of thick, machined plate.

As far as "designing my own build" I don't see myself ever getting into the bowfishing market beyond the propulsion/drivetrain stuff that is already similar to my primary business.

good lookin prints you got there. lol
Don't make fun of my 2 minute hand sketch. You'd really laugh if I told you I had a BS in computer graphics... :p
 

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<a href="http://s812.photobucket.com/albums/zz45/coled30/?action=view&current=0301111959.jpg" target="_blank"><img src="http://i812.photobucket.com/albums/zz45/coled30/0301111959.jpg" border="0" alt="Photobucket"></a>
 

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<a href="http://s812.photobucket.com/albums/zz45/coled30/?action=view&current=0301111959.jpg" target="_blank"><img src="http://i812.photobucket.com/albums/zz45/coled30/0301111959.jpg" border="0" alt="Photobucket"></a>
i like this design and cant wait to see how it comes together and functions
 
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