Lipo xx4....
 

Hi Guys

Ive managed to easily fit a 3200 trakpower saddle in my xx4 and also bring the car back up to full nimh weight i weighed my eastpower 4500 cells and they weighed 425 grams so the lipo weighs 202 grams so ive added around 220 grams in lead....

http://img152.imageshack.us/img152/3963/dscf0974rk5.jpg
http://img152.imageshack.us/img152/d...jpg/1/w800.png

http://img220.imageshack.us/img220/1573/dscf0975qn8.jpg
http://img220.imageshack.us/img220/d...jpg/1/w800.png

http://img101.imageshack.us/img101/4237/dscf0976eb2.jpg
http://img101.imageshack.us/img101/d...jpg/1/w800.png

http://img136.imageshack.us/img136/9861/dscf0977it3.jpg
http://img136.imageshack.us/img136/d...jpg/1/w800.png

I made the battery straps as tempory ones until i can get a pro pair made. And i can move the weight and lipo forwards and backwards to allow for diffrent weight distribution like with nimh.

Also fitted the cr rear end while i was at it to give it a go.

A

looking good ash made good use of the lead i gave you

:p and the cr rear end

A

does anyone else find it ironic that tha straps used to hold in the 'saddles' say BRCA on them?

Yeah :lol::lol:

G

Looks good Ash

LOL i had some so i thought ide put them on :p

A

Are you sure those straps are going to hold them on heavy landings, etc, i can see the batteries shifting. I might also be tempted to wire the batteries the other way round so the link wire is at the back to keep it away from the servo horn.

Ive ran my wire accross that way with nimh since ive had the xx4 and had no problems. The straps have velcro on the bottom of them to push down more and the battery straps are very tight im also going to heat shrink the lead to make it a little thicker. The current lipo thats in it has got a cell that has gone down in it so ive got to send it back to trakpower tommorow. Ill buy a new one in the next few days and ill secure it more securly.

A

Some rubber under the strap might work better, couldn't ever see it moving with that.

Im thinking of sticking the other side of the velcro to the top of the cell.

A

Is there room for that? Brian Preddy has some brilliant straps, might be worth seeing where he got them....they are like the originals but flat carbon and stretch through all the cell slots.

They must be nice clean bed sheets, cos i dont see any man fat on them:woot:

Trust me they will hold

daz :eh?:

A

Ah yes they probably will, but you can't put them in the optimum position. ;)

are they brca legal cells??? :woot:

As Ian says, you need to secure them longitudinaly, you can't rely on clamping pressure (not a good thing to be doing to a cell) to hold them in place. Even use some battery tape if needs must.

Well I know it's offtopic to LiPo, but how you fitted that CR rear end? My last attempt was fail due cvds falling off diff outdrives :mad:

Middle hole on wishbone for shock otherwise you get too much droop. You also have to file off the inner edge of the caster block or on full compression the camber link will pop off.

What i want to do when i get my new pack is to heat shrink the piece of lead between the cell and the belt tunnel ill re heat shrink the pack and put the lead inside the heat shrink then velcro the cell to the belt tunnel :) A minute of genious at college lol.

A

Do I have to use steel diff outdrives (which part number?)? I have plastic one with steel saver on it and it looks like can cause binding.

No, plastic are fine.

Wow the cr rear end is awsome.

A

My modification of XX4 to fit stick pack lipo (copied idea from RCTech, no saddles because I'm racing TC). I still have esc and PT in my TC so I still don't know how much lead I need to put on servo side. I've done also front shock tower reinforcement and front brace mod. CR rear has to wait.
http://img374.imageshack.us/img374/4...ipo2hl6.th.jpg
http://img374.imageshack.us/img374/8...lipoty6.th.jpg

how well dose this work? ive been toying with this idea for a while now

any one ran this? im thinking maybe thats what dannys plan is, as he wants the chassis with out the cut out holes

i might be wrong on that

Lipo's
 

Ash, Where did you get the lead from?

Also can you use the 4900 saddles or is the 3200 the only option

Thanks for the info.

Do me a favour and take a pic from the servo side will ya. Wanna see if my idea will work. Also whats the height of those lipos?

Ta

Your right, once i get the chassis im gonna have a play, then i'll bang some pics up. Wanna move stuff about first then ill share with everyone

You at Worksop this weekend ace?

Hi guys

Adam: Its the 3200 saddle the dimensions are

3200 saddle - 71mm - 47mm - 22mm As far as im aware this pack is not BRCA legal

where as the

3900 saddle - 70mm - 47mm - 30mm As far as im aware this pack in not BRCA legal

Its a very tight fit and ive had to dremmel part of the belt tunnel that sticks out to hold the battery straps in to allow it to fit with the lead.

As for the lead is you PM jono83 on here he will be able to supply you with some lead a good price.

Danny Im affraid i cant take a pic as the lipo pictured above is at trakpower as one of the cells went down so i am awaiting a replacment.

A

No dan :p:p:woot:

A

Ive been running stick lipo with Cr rear end for 6 months now. Its well balanced and ballistic. Heres some pics. Let me know if you have any questions.

http://i18.photobucket.com/albums/b1...r/P2050011.jpg
http://i18.photobucket.com/albums/b1...r/P2050002.jpg
http://i18.photobucket.com/albums/b1...r/P3070010.jpg
http://i18.photobucket.com/albums/b1...r/P3070009.jpg
http://i18.photobucket.com/albums/b1...r/P3070008.jpg
http://i18.photobucket.com/albums/b1...r/P3070007.jpg
http://i18.photobucket.com/albums/b1...r/P3070006.jpg:p

Just wanted to show mine as well, even though we have lots of images from wayboarder.

Car felt extremely balanced with the LiPo on one side. I actually bought and saddle LiPo to put in the car (I race in the US, ROAR considers the 4800 Trakpower saddle legal) - but it was less work to use the stick pack.

I even switched back to the original chassis (cut out a slot for the motor myself) - it was easier to mount electronics. I've used both chassis with this set up and felt no difference between the two. Nick

http://i491.photobucket.com/albums/r...4/IMG_0153.jpg

Awsome im still waitting for my lipo back from trakpower. Hope to get it soon to get soem testing in.

A

Ive just got the Corally lipo saddle packs in the standard position....

i really want to try a stick pack lipo xx4

all the pics look good

Yer me too. Although im going to be making some funky braces for the team Ian.

Depending on how long they take i may give them away to the losi team.

Who is the Losi team this year? Just so i know how many i need to make, of these and the others bits that ive done already :D

Sweet :D Im going to epoxy my cell slots too unless i find an old school chassis on the cheap.
I believe the Horizon website has been updated with the whole team now.

Ian you seriously need to get that picture on Horizon site changed otherwise you will have to change your name to daffyd :woot:

I know, it's already in the works as i hadn't had my hair cut for 4 months at the time. :woot:

Im in the process of sorting something for the chassis! I'm thinking of making a plate of somesort that the cells will slot into, may have to add two holes to the chassis but when i feel better ill have a proper think about it. To bust feeling ill at the moment.

Who from the team is going to the Players this weekend? I'm trying to get the bits done for then.