Comments on: Super Cub on Skis http://thesmithfam.org/blog/2007/01/06/super-cub-on-skis/ Your blog is probably better than mine. Wed, 19 Nov 2008 04:51:50 +0000 http://wordpress.org/?v=2.6.3 By: connor http://thesmithfam.org/blog/2007/01/06/super-cub-on-skis/#comment-60560 connor Wed, 15 Oct 2008 17:15:15 +0000 http://thesmithfam.org/blog/2007/01/06/super-cub-on-skis/#comment-60560 i just got my supercub yesterday, i was kinda disappointed how bad it did in the wind but once the wind died down it flew like a charm. what should i do to increase flight time? cause my doesnt go that long....10-12 minutes very maxium i just got my supercub yesterday, i was kinda disappointed how bad it did in the wind but once the wind died down it flew like a charm. what should i do to increase flight time? cause my doesnt go that long….10-12 minutes very maxium

]]> By: Ian http://thesmithfam.org/blog/2007/01/06/super-cub-on-skis/#comment-6902 Ian Wed, 21 Feb 2007 01:50:21 +0000 http://thesmithfam.org/blog/2007/01/06/super-cub-on-skis/#comment-6902 Whilst at the local shop, be sure to ask for a Lipo Battery charger ( seems obvious but no one said anything to me until I asked.) You may also need connectors to go from the battery to the charger and of course the battery to the Super Cub. I had to carefully remove the existing cable ends from the cub to the battery and replace them. ( This was easily done by removing the whole receiving module from the cub and you can cut out the back of the attey compartment as well.) Luckily the local hobby shop had a handy little pack with all the connectors I needed as well as heat shrink insulation. The heat shrink insulation is invaluable as you can make sure that you don't short the battery by having the insulation longer than the female connector. Cheers Ian. Whilst at the local shop, be sure to ask for a Lipo Battery charger ( seems obvious but no one said anything to me until I asked.)
You may also need connectors to go from the battery to the charger and of course the battery to the Super Cub.
I had to carefully remove the existing cable ends from the cub to the battery and replace them.
( This was easily done by removing the whole receiving module from the cub and you can cut out the back of the attey compartment as well.)
Luckily the local hobby shop had a handy little pack with all the connectors I needed as well as heat shrink insulation.
The heat shrink insulation is invaluable as you can make sure that you don’t short the battery by having the insulation longer than the female connector.

Cheers
Ian.

]]> By: Dave http://thesmithfam.org/blog/2007/01/06/super-cub-on-skis/#comment-6692 Dave Sun, 18 Feb 2007 09:31:13 +0000 http://thesmithfam.org/blog/2007/01/06/super-cub-on-skis/#comment-6692 Well I think on Monday I'll visit my local hobby shop for a new Super Cub motor and a LiPo battery pack. Thanks for the encouragement! Well I think on Monday I’ll visit my local hobby shop for a new Super Cub motor and a LiPo battery pack. Thanks for the encouragement!

]]> By: Ian http://thesmithfam.org/blog/2007/01/06/super-cub-on-skis/#comment-6690 Ian Sun, 18 Feb 2007 08:41:02 +0000 http://thesmithfam.org/blog/2007/01/06/super-cub-on-skis/#comment-6690 As an aside the ads by google while reading your blog are. RC Bandit Ltd NZ's largest Radio Control specialist store. http://www.rcbandit.co.nz and GWS Lipo charger/balancer On Special $34.95 AUD (2S/3S) Aussie Store, Aussie Stock. http://www.pldaniels.com/rcshop Ads by Goooooogle As an aside the ads by google while reading your blog are.

RC Bandit Ltd
NZ’s largest Radio Control specialist store.
http://www.rcbandit.co.nz

and

GWS Lipo charger/balancer
On Special $34.95 AUD (2S/3S) Aussie Store, Aussie Stock.
http://www.pldaniels.com/rcshop

Ads by Goooooogle

]]> By: Ian http://thesmithfam.org/blog/2007/01/06/super-cub-on-skis/#comment-6689 Ian Sun, 18 Feb 2007 08:37:06 +0000 http://thesmithfam.org/blog/2007/01/06/super-cub-on-skis/#comment-6689 Dave, Sounds like I have experienced the same problems you have mentioned. Got to the point where my cub wouldn't even climb. Decided that it was either battery or engine. Replaced the battery with an 8 cell and this made it worse ( weight I guess ). With this in mind I spoke to RC Bandits ( local RC shop in Auckland New Zealand ) and their comments were that a lipo "may" shorten the engine life but at 15.00 NZD each it really doesn't matter and it will make he cub really hum. My thoughts were the engine was already tired ( even though only 2 months old ( it has clocked up more crashes than air time though ). With that said I would say there was at least a 25 % power increase from my gear ( probably 15 % more power than when new. ) The increased engine power is immediately noticeable and the lighter battery means even more thrust / weight. Due to windy conditions only been out properly once but bench tests at home haven't shown any sign of engine problems. You can refer to http://www2.wattflyer.com/forums/showthread.php?t=13823 on some other views. Cheers Ian Dave,
Sounds like I have experienced the same problems you have mentioned.
Got to the point where my cub wouldn’t even climb.
Decided that it was either battery or engine. Replaced the battery
with an 8 cell and this made it worse ( weight I guess ). With this
in mind I spoke to RC Bandits ( local RC shop in Auckland
New Zealand ) and their comments were that a lipo “may” shorten
the engine life but at 15.00 NZD each it really doesn’t matter and it will make he cub really hum.
My thoughts were the engine was already tired ( even though
only 2 months old ( it has clocked up more crashes than air time
though ). With that said I would say there was at least a 25 %
power increase from my gear ( probably 15 % more power than
when new. ) The increased engine power is immediately noticeable
and the lighter battery means even more thrust / weight. Due to
windy conditions only been out properly once but bench tests at
home haven’t shown any sign of engine problems.

You can refer to
http://www2.wattflyer.com/forums/showthread.php?t=13823
on some other views.

Cheers
Ian

]]> By: Dave http://thesmithfam.org/blog/2007/01/06/super-cub-on-skis/#comment-6683 Dave Sun, 18 Feb 2007 07:17:30 +0000 http://thesmithfam.org/blog/2007/01/06/super-cub-on-skis/#comment-6683 How much more power does the LiPo give, would you estimate? When my cub was new, I once got it to do 7 loops in a row. I can barely squeeze out 2 now. I think that's a fairly good indicator that either my battery or motor is dying. What kind of performance can you get with the LiPo battery pack? How high can you climb vertically? Thanks! --Dave How much more power does the LiPo give, would you estimate? When my cub was new, I once got it to do 7 loops in a row. I can barely squeeze out 2 now. I think that’s a fairly good indicator that either my battery or motor is dying. What kind of performance can you get with the LiPo battery pack? How high can you climb vertically?

Thanks!

–Dave

]]> By: Ian http://thesmithfam.org/blog/2007/01/06/super-cub-on-skis/#comment-6682 Ian Sun, 18 Feb 2007 06:58:52 +0000 http://thesmithfam.org/blog/2007/01/06/super-cub-on-skis/#comment-6682 Dave, I have just put a 3 cell 1200 mAh lipo into my cub. Works a treat. More power, more battery life - not that I've ever had it in the air for more than 4 minutes. The lipo is 30 grams lighter also. I had to cut the back out of the battery holder to fit it. Cheers Ian Dave,
I have just put a 3 cell 1200 mAh lipo into my cub. Works a treat.
More power, more battery life - not that I’ve ever had it in the air for more than 4 minutes. The lipo is 30 grams lighter also. I had to cut the back out of the battery holder to fit it.

Cheers
Ian

]]> By: Dave http://thesmithfam.org/blog/2007/01/06/super-cub-on-skis/#comment-6206 Dave Tue, 13 Feb 2007 04:40:24 +0000 http://thesmithfam.org/blog/2007/01/06/super-cub-on-skis/#comment-6206 After a little bit of research, I figured out what the "S" and "C" values mean. The S refers to the number of cells that are wired in Series. You add the voltage for cells wired in series. For 3 LiPo cells, each at 3.7 Volts, wired in series, the total potential is 11.1 Volts (that's 3.7 times 3). If they were wired in parallel, the voltaget would stay at 3.7 Volts, but the max amperage would be triple that of a single cell. So when you read 3S, it means 3 cells in series, and you can sometiomes see 3S2P, which means you have two sets of 3-cells in series, for a total voltage of 11.1V, but with double the max amperage of a single set of 3-cells in series. The "C" value has to do with the max discharge rate of the pack. A higher "C" value means you can safely get more power out of the battery over a period of time, usually because your motor pulls more current. A value of 8C, for example, means you can discharge the battery 8 times as fast as its rating. So a 1000mAh battery means that it can provide 1000mA of current for an hour before it runs out of juice. If it has an 8C rating, then you can safely discharge it at 8-times that amperage, but of course it won't last an hour if you do so. It'll last 1/8th of the time. More expensive packs are rated at 20C or 30C. Usually they have a continuous and a burst rating, with the burst rating being about 25% higher than the continuous rating. Let me know if I've made a mistake. After a little bit of research, I figured out what the “S” and “C” values mean. The S refers to the number of cells that are wired in Series. You add the voltage for cells wired in series. For 3 LiPo cells, each at 3.7 Volts, wired in series, the total potential is 11.1 Volts (that’s 3.7 times 3). If they were wired in parallel, the voltaget would stay at 3.7 Volts, but the max amperage would be triple that of a single cell. So when you read 3S, it means 3 cells in series, and you can sometiomes see 3S2P, which means you have two sets of 3-cells in series, for a total voltage of 11.1V, but with double the max amperage of a single set of 3-cells in series.

The “C” value has to do with the max discharge rate of the pack. A higher “C” value means you can safely get more power out of the battery over a period of time, usually because your motor pulls more current. A value of 8C, for example, means you can discharge the battery 8 times as fast as its rating. So a 1000mAh battery means that it can provide 1000mA of current for an hour before it runs out of juice. If it has an 8C rating, then you can safely discharge it at 8-times that amperage, but of course it won’t last an hour if you do so. It’ll last 1/8th of the time. More expensive packs are rated at 20C or 30C. Usually they have a continuous and a burst rating, with the burst rating being about 25% higher than the continuous rating.

Let me know if I’ve made a mistake.

]]> By: Dave http://thesmithfam.org/blog/2007/01/06/super-cub-on-skis/#comment-6079 Dave Sun, 11 Feb 2007 05:08:04 +0000 http://thesmithfam.org/blog/2007/01/06/super-cub-on-skis/#comment-6079 I am still using the stock 7-cell pack, and I think either it or my motor are starting to show their age. I took it out today and got my weakest performance yet. I think I need to drop the $10 for a new motor and te $60-70 for LiPos. Can you explain what the "3S" means? How does that relate to cell number or the "C" number that I see so often? (i.e., 12C, 3-cell, 3S). Thanks! I am still using the stock 7-cell pack, and I think either it or my motor are starting to show their age. I took it out today and got my weakest performance yet. I think I need to drop the $10 for a new motor and te $60-70 for LiPos.

Can you explain what the “3S” means? How does that relate to cell number or the “C” number that I see so often? (i.e., 12C, 3-cell, 3S).

Thanks!

]]> By: Dan http://thesmithfam.org/blog/2007/01/06/super-cub-on-skis/#comment-6071 Dan Sun, 11 Feb 2007 04:08:53 +0000 http://thesmithfam.org/blog/2007/01/06/super-cub-on-skis/#comment-6071 Dave, I love the snow! A 3S lipo will definitely be able to pull your SC through the snow no problem, and through the air. You should definitely pick one up, you won't be disappointed! Are you still running the stock 7-cell pack? Dave, I love the snow! A 3S lipo will definitely be able to pull your SC through the snow no problem, and through the air. You should definitely pick one up, you won’t be disappointed! Are you still running the stock 7-cell pack?

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