Lipo xx4....

[ashleyb4]

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://imageshack.us)
http://img152.imageshack.us/img152/dscf0974rk5.jpg/1/w800.png (http://g.imageshack.us/img152/dscf0974rk5.jpg/1/)

http://img220.imageshack.us/img220/1573/dscf0975qn8.jpg (http://imageshack.us)
http://img220.imageshack.us/img220/dscf0975qn8.jpg/1/w800.png (http://g.imageshack.us/img220/dscf0975qn8.jpg/1/)

http://img101.imageshack.us/img101/4237/dscf0976eb2.jpg (http://imageshack.us)
http://img101.imageshack.us/img101/dscf0976eb2.jpg/1/w800.png (http://g.imageshack.us/img101/dscf0976eb2.jpg/1/)

http://img136.imageshack.us/img136/9861/dscf0977it3.jpg (http://imageshack.us)
http://img136.imageshack.us/img136/dscf0977it3.jpg/1/w800.png (http://g.imageshack.us/img136/dscf0977it3.jpg/1/)

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

[jono83]

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

[ashleyb4]

:p and the cr rear end

A

[Chris Doughty]

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

[Northy]

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

Yeah :lol::lol:

G

[Garry Driffill]

Looks good Ash

[ashleyb4]

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

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

A

[Southwell]

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.

[ashleyb4]

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

[Southwell]

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

[ashleyb4]

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

A

[Southwell]

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.

[daz]

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

[ashleyb4]

Trust me they will hold

daz :eh?:

A

[Southwell]

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

[DCM]

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.

[lochness42]

http://img136.imageshack.us/img136/9861/dscf0977it3.jpg (http://imageshack.us)
http://img136.imageshack.us/img136/dscf0977it3.jpg/1/w800.png (http://g.imageshack.us/img136/dscf0977it3.jpg/1/)

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

A

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:

[Southwell]

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.

[ashleyb4]

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

[lochness42]

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.

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.

[Southwell]

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.

[ashleyb4]

Wow the cr rear end is awsome.

A

[lochness42]

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/img374/4747/losilipo2hl6.th.jpg (http://img374.imageshack.us/my.php?image=losilipo2hl6.jpg)
http://img374.imageshack.us/img374/875/losilipoty6.th.jpg (http://img374.imageshack.us/my.php?image=losilipoty6.jpg)

[millzy]

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

[andy110m]

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.

[Danny McGee]

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

[Danny McGee]

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


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

[super__dan]

You at Worksop this weekend ace?

[ashleyb4]

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

[ashleyb4]

You at Worksop this weekend ace?

No dan :p:p:woot:

A

[wayboarder]

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/b135/Wayboarder/P2050011.jpg
http://i18.photobucket.com/albums/b135/Wayboarder/P2050002.jpg
http://i18.photobucket.com/albums/b135/Wayboarder/P3070010.jpg
http://i18.photobucket.com/albums/b135/Wayboarder/P3070009.jpg
http://i18.photobucket.com/albums/b135/Wayboarder/P3070008.jpg
http://i18.photobucket.com/albums/b135/Wayboarder/P3070007.jpg
http://i18.photobucket.com/albums/b135/Wayboarder/P3070006.jpg:p

[nikos2002]

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/rr279/nikos2002/XX4/IMG_0153.jpg

[ashleyb4]

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

A

[Southwell]

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

[millzy]

i really want to try a stick pack lipo xx4

all the pics look good

[Danny McGee]

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

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

[Southwell]

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.

[losixxx]

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

[Southwell]

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:

[Danny McGee]

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.

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.

[Southwell]

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.

Im not sure, i cant as i have something on. I do have another idea with the battery slots i need to speak to Trish about, not sure how financially viable it will be though.

[ashleyb4]

Lucky people.

The only problem i can see with apoxy in the battery slots is under a heavy impact they would come out as the battery slots are not tappered so have very little to bond to.

A

[ashleyb4]

Are you guy planning on adding any weight to the car with lipo????

A

[tyreman]

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.

David Belsten, Rob Fox, Brian Shardlow

[Belsten]

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.

I'll be there :thumbsup: Cars arent ready though :(

[nikos2002]

To those talking about adding weight - are you doing it to be legal or just to get back to the NiMH battery weight?

I ran my car with a lipo - I did use the original full chasis, and I made weight - car balance was good. Thanks for the info.

[matthewjtovey]

I've just put a stick lipo in my xx4 and it seems very tight against the motor, even touching it. is this ok? how can i stop this?

Cheers for help

matt

[lochness42]

I've just put a stick lipo in my xx4 and it seems very tight against the motor, even touching it. is this ok? how can i stop this?

Cheers for help

matt

Mine is close but not touching. I've got full graphite chassis with original rubber retainers under NiMH cells. It's enough. I raced in this configuration really hard in Wien without problems relating to motor and lipo.
Check previous page - you've got photos of my XX4 with LRP lipo there (post 23).

[bigred5765]

can any one tell me what the weight balance of a xx4 is with nimh in IE (each wheel)
and then what it is with lipos in, please

[ashleyb4]

Been thinking about a good way to mount lipo in a xx4. With running nosram speedo's i have little room to mount a second battery post infront of the cell slots so while looking and thinking today i came up with this idea so used a spare chassis and mounted to extra posts at the back of the cell slots. Ive drawn on the idea for the battery straps the yellow dot will be a screw with a spacer and a nut to stop it sliding. Ill do the same on the other side but a little longer to allow for the extra slot.

http://img5.imageshack.us/img5/4721/lipoxx4.jpg (http://img5.imageshack.us/my.php?image=lipoxx4.jpg)

A

[tyreman]

Or you could just get the Atomic carbon 2mm battery straps, we have been using and are a diret fit without any modification to your car.

[ashleyb4]

Ive been struggerling to get lipo to fit under the flat area where the reciever mounts got any pics?

A

[tyreman]

http://www.oople.com/forums/picture.php?albumid=307&pictureid=1740

http://www.oople.com/forums/picture.php?albumid=307&pictureid=1741

[GRIFF55]

:drool:nice! What extra weight are you running there Bri and what capacity cells are they?
Cheers

[Belsten]

similair capacity to mine and running lead weight groff :lol:

[GRIFF55]

The same would be my guess Bavid:lol:. How much extra lead weight then and what capacity/weight cells please?

[Belsten]

my capacity lipos are 4400 and I am running approx 140 grams, need to have a play with the weight once my new car is up and ready

[Southwell]

4200 cells, not sure on weight, they were just over half the weight of 4600 cells.

[Belsten]

sorry I meant Im running approx 140 grams of additional weight for absolute clarity :thumbsup:

[GRIFF55]

Cheers guys, think i'll weigh my nimh's and make the lipo's up to that weight with lead plate as to keep it in the same place(under lipo's). Don't really want to change the way the car drives/handles.
Is this what most have done?

[tyreman]

:drool:nice! What extra weight are you running there Bri and what capacity cells are they?
Cheers

Theres about 100g ish in the car, so it weights in at 1605g:thumbsup: They are Corally 4200

[Belsten]

will post a picture on the weekend, mine weighs in at 1633 so have a little to trim off

[tiny tom]

http://www.oople.com/forums/picture.php?albumid=307&pictureid=1740

http://www.oople.com/forums/picture.php?albumid=307&pictureid=1741
I have come up with a new strap design and will get it up on here later today after I get back from work, which hold the cells in and used them for the first time at epr last weekend.

[tiny tom]

This are the straps I am using and work really well, and holding down trakpower 3200 down. And making a testing with another battery pack, and will update when it happens in a few weeks

[rcdunk]

just seen on e bay old school solid chassis with no cut outs for cells brand new part number a 9914 dont know if 65 quid is a good price or not

[GRIFF55]

Is that the one lesro are selling?

[rcdunk]

yeh thats the one

[Danny McGee]

http://www.oople.com/forums/picture.php?albumid=307&pictureid=1740

http://www.oople.com/forums/picture.php?albumid=307&pictureid=1741

Is there any space to lift the cells a little bit Brian? Im going to make us some Steel (possibly stainless or tungsten) weights that lower the CofG, like we spoke about at the weekend. Unfortunately it wont be for the national as the mills busy til next week :(

[Robfo]

I've fitted mine and theyre pretty tight, would be suprised if we could have anything under the cells.
I've run a strip of lead down the transmission tunnel and put some infront of the cells aswell.

[Danny McGee]

I've fitted mine and theyre pretty tight, would be suprised if we could have anything under the cells.
I've run a strip of lead down the transmission tunnel and put some infront of the cells aswell.

If thats the case, i may well have to come up with another solution. Im sure we'll get it sorted :)

[Southwell]

Down the sides of the chassis by the cells?

[ashleyb4]

On a random saturday evening at tallywain i put a stick pack lipo in my xx4 and loved it managed to weigh it up to 1740 ish so nicelt over weight and i was loving it.

http://img515.imageshack.us/img515/5896/dscf1845p.jpg (http://img515.imageshack.us/my.php?image=dscf1845p.jpg)
http://img515.imageshack.us/img515/dscf1845p.jpg/1/w800.png (http://g.imageshack.us/img515/dscf1845p.jpg/1/)

http://img151.imageshack.us/img151/9992/dscf1843o.jpg (http://img151.imageshack.us/my.php?image=dscf1843o.jpg)
http://img151.imageshack.us/img151/dscf1843o.jpg/1/w800.png (http://g.imageshack.us/img151/dscf1843o.jpg/1/)

http://img26.imageshack.us/img26/8682/dscf1844d.jpg (http://img26.imageshack.us/my.php?image=dscf1844d.jpg)
http://img26.imageshack.us/img26/dscf1844d.jpg/1/w800.png (http://g.imageshack.us/img26/dscf1844d.jpg/1/)

A

[Jamie B4]

Ash car looked very good

[DaveG28]

I'll second Jamie!

[ashleyb4]

Yea it was good my thumbs where a all over the place in round 1 2 and 3 and the final. Round 4 was awsome. Was loving the car in round 4 nailed the jumps every time. Only hairy moment was at the bottom of the straight. Hit the pipe at the end of the pit lane. Car bobbles in mid air managed to hold on to it around the bank. As i hit it i closed my eyes and hoped i didnt break it.

[Southwell]

Is there any space to lift the cells a little bit Brian? Im going to make us some Steel (possibly stainless or tungsten) weights that lower the CofG, like we spoke about at the weekend. Unfortunately it wont be for the national as the mills busy til next week :(

Ive got some foam under the cells now, as long as the weights are angled slightly then the battery straps fit on fine, but not on the bottom hole. It would have to be fairly thin steel to make it work. The only other thing is to dremel a bit from where the battery straps slot in to.

[rob84]

Has anyone tried using the diggity designs b44 lipo kit, in there xx4?

[t8rtot]

Has any one tried the 3800 short pack on the car to shift the weight further back? also if anyone has any idea if any of the TLR22 suspension parts (fr or rr) can be adapted to the XX4 W.E.?