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| Shimming a BW 40 http://www.mudmotortalk.com/mmt_v2/viewtopic.php?f=6&t=73251 |
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| Author: | Fowl Language [ Tue Nov 20, 2018 7:34 pm ] |
| Post subject: | Shimming a BW 40 |
Been having fun with the new 40. Season started and it has been great. I did notice the other day that if I push down on the handle to move the cavatation plate upward, I immediately pick up rpms and about 2 mph. So, I figured a shim might help. I installed one and it helped some, but when I pushed down on the handle, again I picked up rpms and speed. So I thought I would add 2 shims. Before I did, I look at the cavatation plate, it extends beyond the the prop about an inch, maybe a little longer. When I added a 2nd shim, the plate moved upward on the drive tube and the the prop was even with the edge of the plate and maybe a little beyond. Would this be an issue? Has any one added 2 shims? How did the 40 perform? On a side note, what rmps are you getting with a loaded boat. I'm running 3900 to 4100. Wondered what others are getting. |
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| Author: | mnugent [ Wed Nov 21, 2018 4:34 am ] |
| Post subject: | Re: Shimming a BW 40 |
I get between 4100 and 4300rpm loaded |
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| Author: | Fowl Language [ Fri Nov 23, 2018 5:27 pm ] |
| Post subject: | Re: Shimming a BW 40 |
I think I have it dialed in. Runs right at the surface. 4250 RPMs. 1st time I have ever been able to run a longtail sitting down.. |
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