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Old 12-30-2008, 07:10 PM   #451
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The chemistry of LiPo's dictate the voltage, not development dollars. 3.7 is how it is. You'd think that with all the development money put into NiMH they'd be at 1.5v by now if chemistry wasnt the limiting factor, but its the same deal. its 3.7v today and LiPo cells will be 3.7v tomorrow
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Old 12-30-2008, 07:39 PM   #452
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Originally Posted by JACK HAMMER View Post
if you love t bar there is no need for a saddle... iwill have these cars at the grand slam race .........bgi phil
Phil,

what would you say are the differences between running a NIMH 17.5 at 850 or so and the LiPO 13.5 at 688?

Not having driven one, I'm really curious about that...
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Old 12-30-2008, 08:08 PM   #453
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The chemistry of LiPo's dictate the voltage, not development dollars. 3.7 is how it is. You'd think that with all the development money put into NiMH they'd be at 1.5v by now if chemistry wasnt the limiting factor, but its the same deal. its 3.7v today and LiPo cells will be 3.7v tomorrow
Maybe there will be a different chemisrty?
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Old 12-31-2008, 12:20 PM   #454
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Maybe there will be a different chemisrty?

Yeh... then it wont be LiPo, it would be a different battery, differnet charging, and different drama in the R/C world... err maybe the same drama as every technology change brings.
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Old 12-31-2008, 12:54 PM   #455
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Originally Posted by TazFND7 View Post
One of the other racers was running 13.5/single cell without a receiver pack or booster, so I plugged in a 13.5/single cell for the next round. I had no radio issues of any kind, and runtime was no problem.
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Also had no problems without the receiver pack. GenX, f9650, GTB, and 13.5; 720g. Loved using a battery that put out the same power all day.
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the Spektrum micro receiver. KO is also known to be good. ESC bec maybe a factor as well. Anyway GTB and spetrum micro is fine.

You run Futaba John?
This is encouraging news, but there's NO way I'm believing for a minute the servo speed (and torque) hasn't fallen off. Not sure if this is a problem or not, I guess, as it sounds like the lap times are in a very similar ballpark.


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Finally, you say looks aren't worth considering? Most race cars, r/c or full scale have paint on them. Why is that? Please don't imply that there's something wrong with me for caring how my car looks. If the "these are race cars, not show cars" statement were true, how do you explain all the custom body painters out there? Just because you may not care about looks, then looks aren't worth considering?
Uh...because if the body's painted no one can see how you've mounted anything on the chassis?
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Old 12-31-2008, 01:27 PM   #456
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1) Weight distribution. The weight distribution of the t-bar car with the lipo on one side and electronics on the other must be off quite a bit which is going to affect handling.

2) The saddle pack will work with current 1:12 and 1:10 t-bar chassis designs.

3) Because there is a demand for it.

So you tried this or you assume that the weight distribution can't be the same ?


Were not against making a saddle pack but at this moment it will not happen as we need to see what will happen with the rules.
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Old 12-31-2008, 02:00 PM   #457
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So you tried this or you assume that the weight distribution can't be the same ?

Were not against making a saddle pack but at this moment it will not happen as we need to see what will happen with the rules.
I didn't try it. I added up all the weight of the components and determined it wouldn't work. However, looking back I didn't take the steering servo weight into account. Personally, I want a saddle pack because it will work with my t-bar car without having to make lots of changes if any. I can tape them in and go. Plus, I think it would make a lot of t-bar car companies happy.

I wouldn't do anything either until more rules come out. But I'm just afraid that will be too late. I mean I think you've pretty much set the standard by being the first with your 25C 3.7v 4000mah Single Cell LiPO. Wouldn't you just be setting the standard again with the saddle pack?
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Old 12-31-2008, 02:06 PM   #458
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It would be nice to set the standard but the 3500.00 dollar cost is hard to justify at the moment. Sometimes it's better to sit back and see what will happen. ROAR is suppose to use our current pack to freeze the case size. If this is happens we will see what they will allow for a saddle and may do it.
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Old 12-31-2008, 04:06 PM   #459
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Yeh... then it wont be LiPo, it would be a different battery, differnet charging, and different drama in the R/C world... err maybe the same drama as every technology change brings.
Truer words are seldom spoken my good man.
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Old 12-31-2008, 05:45 PM   #460
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So you tried this or you assume that the weight distribution can't be the same ?
For anyone who is concerned about weight distribution... it's not the issue. Phil's tbar car balances fine with the single cell pack on one side and the rest of the electronics on the other.

My concern is mainly having to rearrange and rewire every time I race depending on the rules of the event... We're running a points series at 360, the LiPo cars will not be eligible for points so on points days I'd want to run NIMH... January Jam at RC Madness, NIMH only, club races, LiPO... Northeast Grand Slam NIMH... the saddle pack would make life MUCH easier.

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Were not against making a saddle pack but at this moment it will not happen as we need to see what will happen with the rules.
THIS is some encouraging news. Thanks!
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Old 12-31-2008, 06:57 PM   #461
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It would be nice to set the standard but the 3500.00 dollar cost is hard to justify at the moment. Sometimes it's better to sit back and see what will happen. ROAR is suppose to use our current pack to freeze the case size. If this is happens we will see what they will allow for a saddle and may do it.
I'm with you! If/when you sell them I'll be first in line!!
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Old 12-31-2008, 10:31 PM   #462
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TEKIN RS PRO - has anyone gotten it to run for 8 minutes WITHOUT a rx pack?

I am able to get my SpeedPassion to run about 9 minutes without a rx pack, straight 1 cell lipo power.

I ask because I just purchased a new Tekin RS PRO and would like to give it try.
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Old 01-01-2009, 08:22 AM   #463
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Welp, I wired up the Tekin as standard connection and the damn thing doesn't even power up. Yes, neg is to neg and pos is to pos. Tried different packs, absolutely nothing.

RS PRO is DOA. Kind of disappointing, put my SpeedPassion back in and works like a charm.

TeamTekin - you want me to take this thing back to the LHS or do you want to send me a shipping label so you can send a NEW replacement, not refurb. I just bought the combo kit yesterday.
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Old 01-01-2009, 10:10 AM   #464
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What, exactly, do I need to purchase with my 1S lipo to take voltage back up to 5.5-6v for my receiver/servo? I'm interested in a "boost" solution, NOT a receiver pack.

Thanks.
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Old 01-01-2009, 10:50 AM   #465
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boot all u want .. Ill run my flight pack,, thanks
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