MooGoCow

So rebuilt both my kids Quantums over the past week, shocks, diffs everything shimmed and solid. Took them out an hour or so ago, 1 lasted 5 mins (my fault - bevel gear was not meshed on pin correctly in rear diff housing) losing drive to rear but the other one has a weird ESC issue. Sometimes when it goes to pull away, it stutters seems to falter then will either launch or stop. Seems to happen much more often if starting on a hill or anything that might tax the motor more than a flat launch. If it stops then trigger does nothing, you have to power cycle the ESC. If it goes well, it goes... Anybody had this issue, bogs down and stops or bogs down and then launches? I am worried the ESC is playing up...

Pm'd [emoji1303] Sent from my DUK-L09 using Tapatalk

Hi, excuse ignorance. Bought vrc to use with my noble nb4 which directly connected as a controller but quickly went back to sticks so now can't play vrc! Will this work ok with a Futaba r304sb receiver? Does it power the receiver from the usb bus? If it's just a plug and play setup I'll take one [emoji1303] Sent from my DUK-L09 using Tapatalk

Back end bounced nearly as high as it was dropped from with stock oil in both of the kids Quantum's. What length shocks are they in the quantum, I think I'm measuring 90mm eye to eye? Edit: pulled one off the truck and is 100mm not 90mm - now to find a decent upgrade...

I've just dropped in a 3mm nut to bring them out a touch but the shock springs are now deformed permanently from being held under pressure so long. The shocks are pretty naff anyway, can't get them set to stop the chassis bottoming out if dropped from more than a foot and that's with multiple oil weights I've tried, up to 75wt. May have to upgrade them [emoji1303] Sent from my DUK-L09 using Tapatalk

Kids are having fun with these, when its dry enough! Nothing broken yet. Rear shock springs do not clear the rear upper arms though which I think is poor. The springs are pushed backwards as they sit against the upper arms as there is not enough clearance. I came here to check if anyone else has the same issue but I can clearly see it in the OP's pics too.

Cheers, that makes me feel a bit more comfortable with the choice!! 👍

This might be a daft question but my experience is with Nitro and before that analogue speed controllers - spent months polishing those bad boy copper contacts in my youth... I've ordered 2 of the XT's for my lads. The plan to get my old savage rebuilt and get them interested has worked and now we are all joining the local track/club. These are ideal to get them used to driving and learning some skills. Is there any way either through the remote or the ESC to limit max speed? just concerned they are pretty quick out of the box on 2s for kids... Just been through the manual - does the throttle EPA work in the same way as it would for a standard servo and limit throw therefore speed on the ESC?

Very interested! Pm inc...

Just a word of warning. Whoever owns the land has made a very conscious and costly effort to keep people out. Where you could once clearly walk over the trading estate, there are now huge concrete blocks blocking entry. The small gate round the side of the estate is now replaced my a huge solid steel fence and gate. We made the decision to go elsewhere as it was clear we should not be attempting to get in, despite travelling some distance to go bash there.

Its been a long time coming but finally have some time to update on the build so here goes!Started off with these 2nd hand bulkheads off E-Bay - crowns and pinions were in good shape so decided to rebuild and shim these rather than my older diffs off the 25. Stripped down and thoroughly cleaned out - I am pleased I did so, the third pic shows a chunk of steel inside the diff housing - that would have been fatal... The bevel gears were 100% perfect so this was left over from a previous rebuild - couldn't have been run much afterwards as this would have caused damage for sure. Both diffs shimmed and rebuilt - worked out very nicely with very little play. Went for 10k wt front and 30k wt rear diff oil.I had 2 sets of bearings from RC Bearings in the UK - bargain at £18/set - one sealed and one set unsealed. Every bearing will be replaced in the build - all external facing will be sealed.Some parts started arriving from the Far East:2 x JX CLS6322HV 21KG - High Voltage Servo's - Overkill for throttle but for £19 they are an absolute steal. They are so quick and powerful on 8.4v (and 6v!) - I was genuinely shocked. These are the first digital servo's I have ever seen yet alone fired up. Steering servo mounted along with alloy steering upgrade and bearing upgrade over stock bushes: Hit my first major issue when building up the front end. As I had upgraded to the quick access bulkhead, I only had one of the newer upper arm braces and the old stock 25 braces are much wider and do not fit. I could have purchased the new ones but stock was thin and they were orange... So I got the file out and trimmed down the original braces to fit. A touch of purple paint pen (not a perfect match but good enough) and it fitted fine. Second image below shows the correct brace, the old brace and then my filed down version. Quick mock up of the chassis - she looked absolutely huge to me at this point!Not sure if this was a result of using the new bulkhead but the upper arm rods had far too much play between the bumper points that hold them in place. I'm not totally happy with this mod but it will do for now. I drilled out the bumper plate and bolted in an M4 hex bolt to close the gap: Managed to pick up some Innovative RC dogbones from a very kind forum member here - Thanks Baj! Added an o-ring or two and they sit very nicely:Now the next issue raised its head. The fuel tank guard screw holes are higher placed on the XL chassis. The fuel tank with its proud bottom end would not sit low enough to mount. Decided to cut away (drill and file) the guard to allow the proud section to drop through. This just about gave me enough clearance to mount the tank: Thanks for reading!!

Hi all, on the look out for a few Savage bits: 3 speed gearbox, preferably whole unit from a later model X or XL. I have the original 25 box without the incremental improvements over time so upgrading means replacing everything anyway. Adjustable engine mount. I know Nova did one but there were more 3rd party adjustable mounts so the engine position could be shifted. Let me know if you have anything! Ta Sent from my DUK-L09 using Tapatalk

I think we take the entrance to the trading estate on the left, the turning before where you marked. Probably just park up there and walk over the bank on the right separating the estate and the bash spot. Looks like I'm definitely good for Saturday from about 12pm. If anybody else is up for joining let us know [emoji1303][emoji1303]

Dropped you a PM bud. Going up depends on new parts arriving before the weekend and getting the truck sorted, then getting a pass out from the other half but either shouldn't be a problem... hopefully!

Thinking about heading up here on the weekend, its about 40 mins away from me but am really struggling to find anywhere more local to bash my nitro. Has anybody been recently, is it still accessible?