Whats The max to minimum retrieval rate for a dip tube ? I have a high torque motor which has a 1 rpm speed with the shaft it has it seems to be about an 1 1/2 " per minute
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Dip tube retreval rate
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 kellymm |
Dip tube retreval rate |
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Posts: 5 04/03/2009 11:57 |
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JimmyB11 |
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Posts: 52 04/03/2009 12:27 |
I run 4 inches a minute, you can control the speed with a larger pulley.
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FlyDoctor |
Rate calcs | #2 | ||
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Posts: 550 04/03/2009 14:02 |
Pop an old thread spool on there and see how fast it pulls. They come in various diameters so you can easily just play with various sizes until you're
satisfied. You could just decide the pull rate you want then with a 1 rpm motor find a spool or pulley with that circumference. For a 4" per min rate
you'd need a 4" circumference spool. That would be a 1.3" diameter spool. Remember though, the faster the retrieval the thicker the
varnish--Larry
Last Edited By: FlyDoctor 04/04/2009 19:08.
Edited 1 time.
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kellymm |
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Posts: 6 04/03/2009 17:07 |
I would like to go with 3 thin coats, Do you think 1-2 rev per min would be okay?
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JimmyB11 |
#4 | |||
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Posts: 54 04/03/2009 17:24 |
Simply run a test on one foot of reteival, if it tale around 3 mins you are golden, too fast bot to a bigger pulley, too slow, smaller.
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Joel Anderson |
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Posts: 102 04/03/2009 22:20 |
JimmyB11 wrote: Okay, what am I missing? Just like a large arbor reel, if you want to retireve a line faster, wouldn't you use a larger arbor? If you want to retrieve less line per revolution (or slow the speed down), wouldn't you use a smaller pulley? |
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JimmyB11 |
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Posts: 56 04/03/2009 23:03 |
Of course you are right, one should think b4 u type! Yo have the concept, 4 inches/minute
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caneguy |
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Posts: 246 04/04/2009 07:14 |
You are looking at the circumference of a circle here,i.e.,the distance around the outside of a circle. This is calculated as Pi x Diam. In the case of a 4 in
diameter of your pulley, the circumference would be Pi, a constant of 3.14, x 4 or 3.14 x 4= 12.56 in. Turn that pulley 1 rpm and you have a retrieval rate of
12.56 in/min. Vary the diameter of your pulley until you get what you want in retrieval rate and you will be in business. Cheers, Ray
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kellymm |
#8 | |||
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Posts: 7 04/04/2009 10:44 |
Do you think I will be o.k. with 2" per min ? Is there anything I should watch for ? While were on the finishing subject what should I look for when
thinning my varnish or do I even need to. Thanks for all the replys keep em coming. Mike
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FlyDoctor |
Depends.............. | #9 | ||
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Posts: 551 04/04/2009 19:14 |
kellymm wrote:on the type of varnish and how thick it is out of the can. Some guys dilute with both turps or naptha and Penetrol. Others dip right out of the can. Best thing to do is do test dips using those cane garden stakes they sell in garden centers. Its a good idea to do that anyway since every time they change the mixture (a lot lately) it seems to get thinner. Some guys use 2 thick coats, then one thin one. Some jsut do all the same way. It all works, you jsut have to find out the combinations that satisfy you--Larry |
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caneguy |
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Posts: 248 04/07/2009 08:21 |
A retrieval rate of 2 in/min will require a pulley diameter of .64 in with a 1 rpm motor. That is ; Pi times x= 2 or 3.14 x (X) = 2 or X=2/3.14 A
pearsall's gossamer spool is about the right diameter, but, you may need to glue a couple if them together to hold enough string to retrieve the rod from
the tube.
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