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Guys,
Mark is correct the OPTIPACKS are going into retail as we speak. We are pretty open minded as you will be aware so any suggestions on pack range can be considered. We did an extensive market assessment on required sizes and weights and I hope have addressed the magority of requirements but some might have slipped through the net. We of course have to address both fixed wing and helicopter applications.
There is a lot of data on the site, go to home page and clicl OPTIPOWER icon this will take you to the lithium area sizes, weights, advice etc, www.optifuel.co.uk
Demand is very strong with a massive day of shipping yesterday and our feeling after 8 months of testing is positive in that we are comfortable that these cells are strong, give relentless power with little voltage drop right to the end of the pack, in testing we actualy have driven them to that point where the machine just stops in flight to see what damage we can do to the cells in real life.
We will answer all questions where we can but I hope the cells will talk for themselves in reality by performing well and give long and strong cycle life. I see there is a lot of chat about times of flights, irrespective of lithium this can be massively affected by the ESC setup and heli gearing, a well setup heli running at around 94% efficency will run perhaps twice as long as a badly setup heli and do little or no damage to the cells, a poor setup will end up running cells way to hot. One of our well know test pilots you will all have met is Jace and his RAVE 90 is running 5 mins 20Sec of serious stick banging with no drop off in power on two 5000 6S cells and 20% left in packs this was not the case untill the ESC/gearing was optimised, so well worth looking at your setup's irrespective of lithium supplier.
We use CellPro PL8 all the way through and IR when reported are from the PL8. Bare in mind the IR's shown if charging in parallel are the composite IR's across the two packs and you cannot just average them if you want accurate IR's you must charge as single packs and then this is a true IR. PLEASE remember our 5000 6S pack is a split pack i.e. two 3S cells when the split is not connected and it should not be charged in this condition the split must be made and should be left in that condition unless you intend taking it on a passenger aircraft.
We are currently doing 100% QA on cells (every single cell is checked before going into stock) so far out of more than 1000 cells we have one DOA. We would expect a balanced condition to report some thing like 0.008v or less across a pack max to min volts (again using active cell management). All cells are shipped as 3.8v/cell and around 41 to 43% capacity.
We see a lot of chat about price, we have tried to be resonable here and to a large degree price is driven by the fact that retailers need a decent margin to stock cells and distribution needs a margin too plus of course OPTI. If we sold purly online then we could be less expensive but we are not going that route. We also have a decent warranty and a crash back 50% offer all of which does cost something to offer. Our view is the cells are at the premium end and this will in fact talk for itself in due course.
I have absoloutly no doubt this forum and others will report thier views in the normal way!
Any specific questions PM me or mail me at andy@optifuel.co.uk or go to the site www.optifuel.co.uk
OPTI YOUR PASSION
Mark is correct the OPTIPACKS are going into retail as we speak. We are pretty open minded as you will be aware so any suggestions on pack range can be considered. We did an extensive market assessment on required sizes and weights and I hope have addressed the magority of requirements but some might have slipped through the net. We of course have to address both fixed wing and helicopter applications.
There is a lot of data on the site, go to home page and clicl OPTIPOWER icon this will take you to the lithium area sizes, weights, advice etc, www.optifuel.co.uk
Demand is very strong with a massive day of shipping yesterday and our feeling after 8 months of testing is positive in that we are comfortable that these cells are strong, give relentless power with little voltage drop right to the end of the pack, in testing we actualy have driven them to that point where the machine just stops in flight to see what damage we can do to the cells in real life.
We will answer all questions where we can but I hope the cells will talk for themselves in reality by performing well and give long and strong cycle life. I see there is a lot of chat about times of flights, irrespective of lithium this can be massively affected by the ESC setup and heli gearing, a well setup heli running at around 94% efficency will run perhaps twice as long as a badly setup heli and do little or no damage to the cells, a poor setup will end up running cells way to hot. One of our well know test pilots you will all have met is Jace and his RAVE 90 is running 5 mins 20Sec of serious stick banging with no drop off in power on two 5000 6S cells and 20% left in packs this was not the case untill the ESC/gearing was optimised, so well worth looking at your setup's irrespective of lithium supplier.
We use CellPro PL8 all the way through and IR when reported are from the PL8. Bare in mind the IR's shown if charging in parallel are the composite IR's across the two packs and you cannot just average them if you want accurate IR's you must charge as single packs and then this is a true IR. PLEASE remember our 5000 6S pack is a split pack i.e. two 3S cells when the split is not connected and it should not be charged in this condition the split must be made and should be left in that condition unless you intend taking it on a passenger aircraft.
We are currently doing 100% QA on cells (every single cell is checked before going into stock) so far out of more than 1000 cells we have one DOA. We would expect a balanced condition to report some thing like 0.008v or less across a pack max to min volts (again using active cell management). All cells are shipped as 3.8v/cell and around 41 to 43% capacity.
We see a lot of chat about price, we have tried to be resonable here and to a large degree price is driven by the fact that retailers need a decent margin to stock cells and distribution needs a margin too plus of course OPTI. If we sold purly online then we could be less expensive but we are not going that route. We also have a decent warranty and a crash back 50% offer all of which does cost something to offer. Our view is the cells are at the premium end and this will in fact talk for itself in due course.
I have absoloutly no doubt this forum and others will report thier views in the normal way!
Any specific questions PM me or mail me at andy@optifuel.co.uk or go to the site www.optifuel.co.uk
OPTI YOUR PASSION
My only worry is the weight of the packs, the 6s 5000 packs are heavier than my flightpower ones by a decent amount.
+ 7 x Eddies finest EGS's
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