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4 postsHaving said that I am pleased with the outcome.
- lesfacPetty Officer 1st ClassThe bit I can't understand is that I was running the boat on 14.4 volts. I did nothing yet it cut out on the lipo at 3.3 volts per cell which would equate to 16.5 volts. if it had been programmed to do this it wouldn't have worked at 14.4 volts. its as if it had auto programmed itself.The bit I can't understand is that I was running the boat on 14.4 volts. I did nothing yet it cut out on the lipo at 3.3 volts per cell which would equate to 16.5 volts. if it had been programmed to do this it wouldn't have worked at 14.4 volts. its as if it had auto programmed itself.
- Dave MVice AdmiralHI LesHI Les There are default settings in most ESCs and they change when you select a different type of battery. if you selected LiPo it recognised 5 cells and auto set a 3.3 v cut off. My latest LiPo 5000 suggests a cut of voltage of 3.4 volts so I suggest you look on the battery cover to see the recommendation. The higher power batteries are very low internal resistance and I believe this is why they suggest a higher cut off. So yes your observation is correct
There are default settings in most ESCs and they change when you select a different type of battery. if you selected LiPo it recognised 5 cells and auto set a 3.3 v cut off. My latest LiPo 5000 suggests a cut of voltage of 3.4 volts so I suggest you look on the battery cover to see the recommendation. The higher power batteries are very low internal resistance and I believe this is why they suggest a higher cut off.
So yes your observation is correct
- ads90Warrant OfficerHI DaveHI Dave Yes, my ESC is a Tornado 50 Amp which is the same as my friend's one - in fact I bought it on his recommendation, however I usually use Mtroniks. Our motors are not the same but both have similar RPM at 12 volt. I have ordered 3 more props of varying sizes and pitch to see how it will perform - had I have seen my friend down the lake in the last few months since I have been building my Perkasa, I might have got the prop right to start with ! I don't think I will get a 'pass' to get down the lake before Christmas so hopefully it will not be too cold and freeze the lake again before I get a chance to try her out. Alan
Yes, my ESC is a Tornado 50 Amp which is the same as my friend's one - in fact I bought it on his recommendation, however I usually use Mtroniks. Our motors are not the same but both have similar RPM at 12 volt. I have ordered 3 more props of varying sizes and pitch to see how it will perform - had I have seen my friend down the lake in the last few months since I have been building my Perkasa, I might have got the prop right to start with ! I don't think I will get a 'pass' to get down the lake before Christmas so hopefully it will not be too cold and freeze the lake again before I get a chance to try her out.
Alan - ads90Warrant OfficerDown at the lake this morning. Boat is now complete with hand rails fitted and painted. 40MM 2-blade X type prop fitted and with the batteries moved back she went really well. The bow lifted well out of the water and got on the plane very easily - would not want or need to go any faster.Down at the lake this morning. Boat is now complete with hand rails fitted and painted. 40MM 2-blade X type prop fitted and with the batteries moved back she went really well. The bow lifted well out of the water and got on the plane very easily - would not want or need to go any faster. Alan
Alan
thank you.
gerry
- gerryMaster SeamanHi: all sorry I have not responded to your replies regarding the RTTL.nOt been on for a while.So I wish to thank you all for the responses,and all the information.I also wish to thank Micheal R for all the valuable information he has given to me on this boat.Hope to post some pictures soon.many thanks Gerry.Hi: all sorry I have not responded to your replies regarding the RTTL.nOt been on for a while.So I wish to thank you all for the responses,and all the information.I also wish to thank Micheal R for all the valuable information he has given to me on this boat.Hope to post some pictures soon.many thanks Gerry.
- modmariner13RecruitHI I have the plan from the 1958 model boats mag and can copy it for youHI I have the plan from the 1958 model boats mag and can copy it for you
I'm from France and now on the way re-building of the same initialy started 40 years ago (when I was young !) and I would need your experience (if you agree)
Tell me please if you are OK.
See you