hope that helped
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| Drive shaft housing thickness?? https://www.mudmotortalk.com/mmt_v2/viewtopic.php?f=6&t=17112 |
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| Author: | sftull [ Tue Mar 22, 2011 12:43 pm ] |
| Post subject: | Drive shaft housing thickness?? |
I am in the process of building a small longtail and have two options on the drive shaft housing. I can go with a 1.5" diameter tube with .188" (3/16") side walls. That tube 53" long will weigh 11.5 lbs, empty. The other option I have is a tube that is 1.25" in diameter with .065" (1/16") side walls. That tube will weigh in about 4 lbs, empty. If anyone has any insight into which one will work best, please let me know. Engine: 6.5hp Boat: 1232 jon Riding conditions: open water, shallow water with sandy and muddy bottoms w/ occasional submerged log. Thanks |
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| Author: | fishon!! [ Tue Mar 22, 2011 8:53 pm ] |
| Post subject: | Re: Drive shaft housing thickness?? |
i would go with somethin aroun .125", biggers always stronger so if .188 is the only other option id go with that. i would wanna make it a longer shaft though. the longer the shaft, the more forward thrust you get. longatials rely mostly on forward thrust, as oppsed to upward. weight is a major factor,and the /065 could work and might be alright in open water, but when you get to jackin that shaft around in the mud and got the shaft inside spinning at 3000rpm, that .065 housing can seem a little on the thin side, which is why i would go with .125 or bigger |
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| Author: | fishon!! [ Tue Mar 22, 2011 8:54 pm ] |
| Post subject: | Re: Drive shaft housing thickness?? |
hope that helped
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| Author: | sftull [ Wed Mar 23, 2011 6:52 am ] |
| Post subject: | Re: Drive shaft housing thickness?? |
It did. Since I don't have any experience with LT's, I wasn't aware of the forward thrust vs upwards thrust. Thank you! |
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| Author: | fishon!! [ Wed Mar 23, 2011 6:53 pm ] |
| Post subject: | Re: Drive shaft housing thickness?? |
no problem bud. i do wanna tell u that now that u have recieved information you are required to keep pictures and updates of your build posted on this forum. thanks
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| Author: | Mark F. Cheney [ Sun Mar 27, 2011 6:07 pm ] |
| Post subject: | Re: Drive shaft housing thickness?? |
A 1.250 O.D. with a .188 Wall is a common size of either steel or aluminum, and is generally available from the tubing people. I sleeve either one to make a carrier for the seals. Mark F. Cheney |
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| Author: | Seagoing Cowboy [ Sat Apr 02, 2011 12:03 am ] |
| Post subject: | Re: Drive shaft housing thickness?? |
The pipe you are considering sounds a bit on the heavy side. The Thai 6.5 hp longtails use a galvanized steel pipe with a 2mm wall thickness, which is plenty thick. The Thai's have been making longtails for over 50 years, and they know what they are doing. Hope this info helps. |
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