LEE69 Posted August 29, 2005 Share Posted August 29, 2005 Messing about earlier (until handset batteries went dead ) and the savage was "ballooning" the front tyres,now i'm not 100% sure it was lost of traction. I put both fronts on the floor,and moved it by rotating the rears together. Also did the opposite,and rotated the fronts all was ok. Any idea,other than front end off ground Quote Link to comment Share on other sites More sharing options...
fastboy Posted August 29, 2005 Share Posted August 29, 2005 does it have a centre diff?..if so may need thicker oil in there. sometimes very soft tyres will ballon and theres not much you can except belt them internally. Quote Link to comment Share on other sites More sharing options...
123456 Posted August 29, 2005 Share Posted August 29, 2005 I think you will find the axle thingy that goes from the diff to the engine is not connectted properly. It is usually a little screw that has come lose. I did it on my LSt but it was a quick 10 second job to fix it. Not sure on the lay out of the Savage, but that is the problem. ANyone with a Savage can point to where the actual problem is but the diff is not connected to the engine properly. Quote Link to comment Share on other sites More sharing options...
LEE69 Posted August 29, 2005 Author Share Posted August 29, 2005 Makes sense i'll have a butchers. ta. Quote Link to comment Share on other sites More sharing options...
LEE69 Posted August 29, 2005 Author Share Posted August 29, 2005 All tight. Quote Link to comment Share on other sites More sharing options...
madmanluke Posted August 29, 2005 Share Posted August 29, 2005 sounds like ur getting aloss of drive to the rear, resulting in the fronts to spin due tto not traction. check your diff is toped up wiith oil, the pin that holds the drive cups are still there etc etc Quote Link to comment Share on other sites More sharing options...
LEE69 Posted August 30, 2005 Author Share Posted August 30, 2005 check your diff is toped up wiith oil, ← I think we have a winner REAR DIFF FRONT DIFF see,the seal is only the skid plate Would a grease be better? What weight do i need to buy,do the front and rear use the same weight? Quote Link to comment Share on other sites More sharing options...
fastboy Posted August 30, 2005 Share Posted August 30, 2005 lol,no,oil goes inside the diff unit itself,it should be held together with 4 screws or so. ok what can happen is this(thats assuming that your truck has a center diff) the center diff is filled with a thick sticky oil(bit like syrup),this means it turns both the front and rear outputs equallyish so both front at rear get the same power from the engine,now if the oil has leaked or its too thin,it then becomes lazy and gives its power to whichever end is easiest to turn,which means the front end since its lighter than the rear on power and so spins both front wheels easily while giving the rear wheels less power which means more front wheelspin. now if the truck doesnt have a center diff then it could be a drive shaft from the main spur which has worked loose,check all grub screws. also could well be that your just too soft on the rear suspension and the truck is squatting a lot under power hence making the front end light,if so try a stiffer spring or change the antisquat if possible. good luck dave Quote Link to comment Share on other sites More sharing options...
LEE69 Posted August 30, 2005 Author Share Posted August 30, 2005 Ahh right cool. Shouldnt there be grease on the cogs in the picture though,they look dryer than a nun in a pub. Quote Link to comment Share on other sites More sharing options...
fastboy Posted August 30, 2005 Share Posted August 30, 2005 it should have a bit on providing that they are kept out of the dirt,a gear coated in grease will attrract grit etc in no time and make more of a mess than if left dry. Quote Link to comment Share on other sites More sharing options...
waz Posted August 30, 2005 Share Posted August 30, 2005 You need some grease on the diff gears, fastboy your talking so much garbage I didn't even bother reading all of your posts sorry. The savage is a monster truck therefore has no center diff. I'd put 30k grease in the diffs. I have noticed that because the savage is so light, occasionally the front will start ballooning whenilst driving along, assuming you have standard savvy 25 wheel's and tyres that is. Quote Link to comment Share on other sites More sharing options...
LEE69 Posted August 30, 2005 Author Share Posted August 30, 2005 Took it out earlier and all is well,must have been my garden,flies along woohooo. Quote Link to comment Share on other sites More sharing options...
madmanluke Posted August 30, 2005 Share Posted August 30, 2005 dont even need diff oil. put some lm greace in there if ypur just usingit for bashing. comes in tubs, cheap as chips, and can fill about 50 -60 diffs. i use it and cant ffualt it. Quote Link to comment Share on other sites More sharing options...
fastboy Posted August 30, 2005 Share Posted August 30, 2005 You need some grease on the diff gears, fastboy your talking so much garbage I didn't even bother reading all of your posts sorry. The savage is a monster truck therefore has no center diff. I'd put 30k grease in the diffs. I have noticed that because the savage is so light, occasionally the front will start ballooning whenilst driving along, assuming you have standard savvy 25 wheel's and tyres that is. ← me talk garbage lol...hmm dont think so,if you bothered to read the post i said "if" the savage has a centre diff numbnuts...i dont have a savage,i race rallycross,ive also been racing at national and european level for nearly 12yrs so please dont even go there sunny...ive forgotten more than you will ever know about setups and maintenance,as well as being a motorcycle technician for aprillia and gilera for 6 yrs. yeah you can put margarine in there for bashing if you want..but why not just put the correct diff oil in there..why do a bodge job when you can do it right?..doing bodge jobs will only come to haunt you in the end,do it once,do it right. dave Quote Link to comment Share on other sites More sharing options...
fastboy Posted August 30, 2005 Share Posted August 30, 2005 lee also asked if he should put grease on the "gears in the picture"..i said only if they can be kept free from grit and dirt,why do you find that statement so wrong waz?you would run a grease laden gear in an open gritty enviroment? maybe read all the posts in future before trying to belittle someone who is giving good solid advice about something he clearly knows much about. Quote Link to comment Share on other sites More sharing options...
madmanluke Posted August 30, 2005 Share Posted August 30, 2005 the thing is fast boy, if you keep puttting proper racing oils and beeing botherd to make sure you have the right weight in there, if your onlyu bashing the truck it doesnt matter, the diffs are going to be pulled apart every month even more. its gunna cost a bomb to keep repalcing the oil. jsut get a tub of lm greece that works perfecctly in diffs and it wont cost you for another 50 -70 odd diff rebuilds. cant complain for 4 quid less for a tub, where ass your paying that fora little bottle thatl only do about 2 diffs max. Quote Link to comment Share on other sites More sharing options...
fastboy Posted August 30, 2005 Share Posted August 30, 2005 yes i understand where you are coming from,cost is an important factor as i know myself,i suppose its because im more of a racer than a basher,where the car has to be dialled in and forget that sometimes.. yes you can use grease,but the grease will thin out with heat i suspect,honestly if the diff is built with good o rings on the output shafts and a good seal on the casing then the oil wont leak and should last you a long long time,but if your pulling the diffs apart a lot then it could get expensive for bashing. as a referance,i do about 2 meetings running before i rebuild the diffs in my 1/8th or whenever i need to change the oil to the track conditions to tune the drive,i suspect you could run a lot longer than that hehe..schumacher do diff oil now in decent size bottles for £2.99 each. dave Quote Link to comment Share on other sites More sharing options...
robbybo Posted August 30, 2005 Share Posted August 30, 2005 Calm down guys If its any help the Diff OIL goes inside the differential assemblies themselves (the little box which turns withe the big gear)these have a gasket, a GREASE should be used on the outside of the diff assemblies (the big gear in the picture) a plate (front/rear bumber skid) then covers the hole and they are sealed from the environment. Hope this is of some help. Rob Quote Link to comment Share on other sites More sharing options...
madmanluke Posted August 31, 2005 Share Posted August 31, 2005 hehe, no argument going, on, just a discusion, thats what this forum is here for right? Quote Link to comment Share on other sites More sharing options...
LEE69 Posted September 3, 2005 Author Share Posted September 3, 2005 Think i have found the problem, Rear dif is slipping like mad,making the fronts balloon up. Best enquire about the 4 gear mod,more cash Quote Link to comment Share on other sites More sharing options...
robbybo Posted September 3, 2005 Share Posted September 3, 2005 Found this: Diff mod I also found my diff crown gear was a bit worn so have shimed it along with the little pinion gear Rob Quote Link to comment Share on other sites More sharing options...
LEE69 Posted September 3, 2005 Author Share Posted September 3, 2005 do you do the dif mod as well,or did you just shim with the little pinion gear? Quote Link to comment Share on other sites More sharing options...
robbybo Posted September 3, 2005 Share Posted September 3, 2005 I bought the savage ss 4.6 which already has four gears in the diff I was under the impresion that the savage 25 only had three I might be wrong, I just changed the oil inside the diff reassembled. and then shimmed up the big crown wheel, and the little pinnion, must admit I don't know a lot about them I've seen other links which suggest using Kyosho bevel gears in side the diff, and another chap suggested getting an ally diff casing. Its all a bit confusing, and I havn't run it yet with the shims so not sure what thats gonna be like, feels ok though. Sorry I can't be of more help I think you just need to keep throwing money at it Rob Quote Link to comment Share on other sites More sharing options...
LEE69 Posted September 3, 2005 Author Share Posted September 3, 2005 yeah cheers Least your more understanding than the wife (like i listen hahahahahaha) Quote Link to comment Share on other sites More sharing options...
Screamer17 Posted September 3, 2005 Share Posted September 3, 2005 Could be the wheel hex hubs too, u can tell, if its the diffs you hear a rather horrible sound, if you can't could be many other things but also if theres no drive to the back and loads to the front (wheelspinning) you could have stripped the hex's in the wheels, thats what happened to mine, new wheels arrived today so im gonna get glueing lol put the two new wheels on the rear and it should accelerate much faster now (wheeeliees!!!) and if the front ones are stripped, when accelerating hard the truck will want to turn to one direction too Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.