totalshell Posted February 17, 2011 Report Share Posted February 17, 2011 i ve aquired a c10 that is running a 6v battery on total loss, it'll do a single venue trial on a charge no problem. i want to do road trials on it this year though, most of the PJ1 series , a couple of Miller rounds and a LDT so.. would i gain anything by changing to 12v and for a bit of longevity for the road trials should i if i opt for more APH and if so how much.. ? Quote Link to comment Share on other sites More sharing options...
copemech Posted February 18, 2011 Report Share Posted February 18, 2011 i ve aquired a c10 that is running a 6v battery on total loss, it'll do a single venue trial on a charge no problem. i want to do road trials on it this year though, most of the PJ1 series , a couple of Miller rounds and a LDT so.. would i gain anything by changing to 12v and for a bit of longevity for the road trials should i if i opt for more APH and if so how much.. ? This is an interisting question? Obvious answer being a LARGER capacity(and size) battery will last longer. When you change voltage, you gotta change other things such as the coil to a proper rating to accept the higher voltage input. With current battery technology, the question presents itself the possibility of using something like a rechargable Li ion battery pack as compared to a lead/acid cell. One can build packs of just about any size/ voltage combo. Standard shargers as used in motorized hand tools/model aircraft/ cars and such are readily available and the batteries really last a long time with lots of power and spares are leightweight also. Might be worth consulting a specialist about! Quote Link to comment Share on other sites More sharing options...
totalshell Posted February 18, 2011 Author Report Share Posted February 18, 2011 i have some sticks of 6v 5000mah nimh and am going to do some running tests this weekend granted they are small designed to be drained 100% weigh nowt and can be used in any position but will they give the longevity of a typical 6v 5ah motorcycle battery..might also do 2 x the rc sticks in parralel as a comparison giving theoretically 10ah Quote Link to comment Share on other sites More sharing options...
cvgmmartin Posted February 18, 2011 Report Share Posted February 18, 2011 The ability to run longer is dependant on the AMP/hr capacity of the battery and the current draw of the ignition circuit, for example if both the 12v and 6v batteries are say 4 Amp/hr capacity and both the 12v and 6v ignition circuits draw the same current then there is no gain, but if the 12v system draws less current then you will get a proportional increase in running time. I would guess a 12 volt ignition cicuit may draw slightly less current than a 6 volt system but I don't know. If you use electronic ignition circuit components (which are probably all 12v) then you would probably get a bit more life since the current draw on these is less than that of an old coil/contact breaker arrangement. I run a 12v total loss system on my 500 triumph and have made up an ignition cicuit using an ignition box and coils from a Yamaha twin (i think)and by making a trigger circuit that fits where the contact breakers go. It works fine for our trials which are short all on closed land but I doubt if it would work on a road trial. I also find that when the battery is low then I get miss fire on one cylinder so the performance of the bike now has another variable (battery condition) as well as all the other problems one has with old engines. I would suggest you change to a charging system, it will be a lot less aggravating. Quote Link to comment Share on other sites More sharing options...
jack_the_lad Posted February 18, 2011 Report Share Posted February 18, 2011 Were these engines not alternator if they were why not fit a PVL type ignition. Quote Link to comment Share on other sites More sharing options...
alan Posted February 19, 2011 Report Share Posted February 19, 2011 Were these engines not alternator if they were why not fit a PVL type ignition. if it is the bike i think it is......... the end of the crank has been cut off..... other cranks are available though Quote Link to comment Share on other sites More sharing options...
totalshell Posted February 19, 2011 Author Report Share Posted February 19, 2011 ran today for 3.5 hrs on a 6v 12ah battery.. 20ah on order,, Quote Link to comment Share on other sites More sharing options...
jack_the_lad Posted February 19, 2011 Report Share Posted February 19, 2011 If you get a bigger battery you use F1 technology and incorporate the KERS system. Quote Link to comment Share on other sites More sharing options...
alan Posted February 20, 2011 Report Share Posted February 20, 2011 If you get a bigger battery you use F1 technology and incorporate the KERS system. you could be on to some thing there...... kinetic energy recovery system........ could be that you have a cable operated bicycle dymano that you drop onto the tyre when going down hill, that would charge the battery and considerably increase the braking performance of a C10. Result..... hope you took out the patent before posting in the public domain.. Quote Link to comment Share on other sites More sharing options...
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