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morati
12-15-2005, 09:27 PM
Hey guys.....I'm getting ready to place my order for a set of saddle-pack 11.1volt Lipo's and I need to know what the battery compartment size in the H8 is so I can order the proper batts. Anyone know? Many Thanks.

Hawk
12-15-2005, 09:30 PM
United RC has just the ticket, they already know the size, no muss no fuss. :cool:
http://www.unitedrc.com/store/product.asp?BrandId=7&ID=148
or this
http://www.unitedrc.com/store/product.asp?BrandId=7&ID=208

morati
12-16-2005, 04:04 AM
United RC has just the ticket, they already know the size, no muss no fuss. :cool:
http://www.unitedrc.com/store/product.asp?BrandId=7&ID=148
or this
http://www.unitedrc.com/store/product.asp?BrandId=7&ID=208They are out of stock on their 11.1v saddle packs...I have someone to build me new ones but he stocks many different brands of Lipos and I need to know the exact size of the batt. compartment so I can choose what cells he makes the saddle-packs out of.

Trickpatrick
12-16-2005, 05:08 AM
With a ruler it is approximatly 45mm wide by 45mm long x 20mm high.

If you are going to use a 3 cell you could forgoe the saddle pack for one pack say 900mah 11.1 3 cell it would fit with room to spare and then you could put ESC in other battery space.

I get 10 to 12 min run times and dont over heat the motor by running so long at once. for 5 to 8min racing heats my battery never dip below 11.3.

Look at my pics and you can see the battery its yellow.

Hawk
12-16-2005, 05:08 AM
I measured the chassis pocket. I got rid of the doors long ago so I can't tell you for certain on how deep, had a 15mm 3s2p that fit each side.
49mmx55mmx15mm+ roughly. 1.9inx2.1inx.8in (20mm)
49mm from the hinge plate on the outboard side of the chassis
55mm from the boxed section at the rear of the chassis to the battery locator toward the front of the chassis.
Hope this helps.
:cool:

Hawk
12-16-2005, 05:19 AM
I have stated this before elsewhere but the best reason to use higher mAh LiPo setups including saddle packs (3s2p) is to get increased Amperage output for brushless motors. URC's GP1100 nimh's put out 30A continuous. The LiPos tend to be 10C continuous and at 2100mAh that is 21A.
I built a saddle pack out of thunder power 730mAh 11.1v batteries. rated at 10-12C cont. With one pack, that is 7A-9A. With two in parallel, it is 14A to 18A.
Blackhawk444 found a Kokam 2s 7.4v that was rated at 15C in 2000mAh, or 30A cont.

Just one more thing to consider. :cool:

morati
12-16-2005, 05:47 AM
Thanks for the quick responses guys.....
Not sure what to do here. The Apogee packs from United are 52 x 37 x 17mm
The ThunderPower 730mah packs would fit with a little room to spare, buthe builder is recommending Kokam 740mah packs which are just too big.....Could be he's recommending them due to the higher 20C continuous discharge rate? If I go with a higher capacity single 3-cell Lipo, its not gonna fit either. Mmmmmm?????

Trickpatrick
12-16-2005, 05:51 AM
I had to trial fit at my LHs so I know its hard to chose but I do know you cant go wrong with the thunderpower setup.