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water bug

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d4570 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote d4570 Quote  Post ReplyReply Direct Link To This Post Posted: 17 July 2018 at 20:52
No way near finished or even ready to paint,
BUT
This Saturday is the boys last scheduled day off, for the season.
With a little luck and a long day or two of work...
We are shooting for a "Water test"
We will have his mud boat and a 4wheeler along for an emergency extraction if needed.
If it works we will have some video If not ,
 
Confused
Ouch
Shocked
 
 well you will never see it...
Remember: Four boxes keep us free ,the soap box, the ballot box, the jury box, AND the cartridge box
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Irish Bird Dog View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Irish Bird Dog Quote  Post ReplyReply Direct Link To This Post Posted: 17 July 2018 at 23:00
Here's wishing a good trial water run for the Water Bug!.
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BEAR View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote BEAR Quote  Post ReplyReply Direct Link To This Post Posted: 18 July 2018 at 06:19
take a bottle of chanpaign to break over the bow on launching.

can't wait for pics.  good luck.
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d4570 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote d4570 Quote  Post ReplyReply Direct Link To This Post Posted: 27 July 2018 at 18:13
First water test.
 
 
 


Edited by d4570 - 27 July 2018 at 19:07
Remember: Four boxes keep us free ,the soap box, the ballot box, the jury box, AND the cartridge box
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jsgbearpaws1 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote jsgbearpaws1 Quote  Post ReplyReply Direct Link To This Post Posted: 27 July 2018 at 18:27
looks promising!
...oh yeah! thats gonna hurt!
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Irish Bird Dog View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Irish Bird Dog Quote  Post ReplyReply Direct Link To This Post Posted: 27 July 2018 at 21:07
looking good....level and moving and steering too....was that a crash landing?????
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Wing master Quote  Post ReplyReply Direct Link To This Post Posted: 27 July 2018 at 22:05
That looks great. It looks to me like you're about ready to head out into deep water. 

Congratulations

Wing master
I have always considered myself to be quite the bullshitter, But ocasionally it is nice to sit back and listen to a true professional......So, Carry on.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote BEAR Quote  Post ReplyReply Direct Link To This Post Posted: 28 July 2018 at 03:56
congratulatiob D.  looking good.

was that full throtle?
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RobertMT View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote RobertMT Quote  Post ReplyReply Direct Link To This Post Posted: 28 July 2018 at 09:28
Looking good.
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d4570 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote d4570 Quote  Post ReplyReply Direct Link To This Post Posted: 23 August 2018 at 12:44
Well Dang!!!!
I have decided to give the snowmobile belt drive up...
I just don't have the RPM/HP to make it do what I want.
I can't get it to get up to a 1 to 1 ratio at 3000 rpm so I have to run
the bug motor up to closer to 4500rpm to get the prop in to the upper 2000 rpm range. When I do get it up there the belt slips a lot.
I got a shorter belt to see if there was a difference, much better but still not good.
    I got two 32 tooth #50 chain sprockets , same chain I use on the top drive,with 1 3/16th hubs.
They go right on to the parts of the SNB drive that I had made.
With the hubs I can change the ratio if needed with only a sprocket.
with a two stage chain drive I'll have to run idler sprocket on both chains I suppose. I had to put a key way in the shafts, amazing what an angle grinder can do. It is a little les forgiving then a belt as far as alignment. Hope to hit the gas this weekend and see if I can blow some dirt/gravel.
 
Remember: Four boxes keep us free ,the soap box, the ballot box, the jury box, AND the cartridge box
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Irish Bird Dog View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Irish Bird Dog Quote  Post ReplyReply Direct Link To This Post Posted: 23 August 2018 at 12:52
Sure looks good in the very clear/sharp pictures....very impressive solution and maybe more durable too. 

So, now you are an "angle-grinder machinist"...must take a steady hand to cut the key-way that way & get it to be a close fit for the key. Did you do it with shaft mounted or take it off to make the key-way? 
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Post Options Post Options   Thanks (0) Thanks(0)   Quote MtElkHunter Quote  Post ReplyReply Direct Link To This Post Posted: 23 August 2018 at 13:59
The clutching on the snowmobile belt will change things a lot. To change the clutching you will need to change the clutch springs and/or the cluch weights. On sleds we have to play with this a lot to get them to run like they are suppose to. The correct setup on the clutch will make all the difference in the world.
SW Montana
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d4570 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote d4570 Quote  Post ReplyReply Direct Link To This Post Posted: 23 August 2018 at 15:25
1971 Johnson skee horse drive not much for "Performance" parts out there.
No weights in it only a coil spring in the primary and a torque spring on the secondary.
 My max RPM on the bug is around 4000 rpm but I would not want to run it over 3000 all day long. 
I'll miss the clutch to be able to idle the motor with out the prop turning.
Remember: Four boxes keep us free ,the soap box, the ballot box, the jury box, AND the cartridge box
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d4570 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote d4570 Quote  Post ReplyReply Direct Link To This Post Posted: 07 September 2018 at 13:54
Going all the way, took out the complete SM drive and going to use a direct shaft to connect the motor to the prop via a shaft with a changeable sprocket to adjust the rpm.
Remember: Four boxes keep us free ,the soap box, the ballot box, the jury box, AND the cartridge box
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Irish Bird Dog Quote  Post ReplyReply Direct Link To This Post Posted: 07 September 2018 at 14:02
looks lots less cluttered anyway....direct drive sounds good....does the blue bearing housing get anchored in anyway????  bolted anyway so can be removed when you need to change the sprocket.
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d4570 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote d4570 Quote  Post ReplyReply Direct Link To This Post Posted: 07 September 2018 at 14:42
Yes it will all be bolted down and changeable
Remember: Four boxes keep us free ,the soap box, the ballot box, the jury box, AND the cartridge box
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