andre2 Posted February 5, 2010 Share Posted February 5, 2010 I was so fed up with the s28 gearbox 2de speed gear breaking then I know the S50 Sledge hammer has steel gears. I 1ste thought I will buy a total new gearbox then I buy all the spares for the S50 gearbox. What I have discover the S28 and the S50 has exactly the same gearbox casings. And most off the gears inside is also the same the only difference is the shaft with the 2de speed gears. and it has some extra plastic brackets that also come into the gearbox. Thought I would share this with you if you think to change the gearbox. The drive shafts is also the same diameter on the S50 as on the S28 Quote Link to comment Share on other sites More sharing options...
Nitroholic Posted February 5, 2010 Share Posted February 5, 2010 I think you are heading into uncharted territory From the sound of it, the conversion should work..but you are not going to find out ( I suspect ) unless you try. Logic would dictate that the S50 grew from the S28 and that there would be some parts crossover, but it is equally likely that small detail changes were made that may mean parts are not entirely compatable. Will be interesting to see how you get on if you do try it. Quote Link to comment Share on other sites More sharing options...
ereeiz Posted March 10, 2010 Share Posted March 10, 2010 (edited) I think you are heading into uncharted territory From the sound of it, the conversion should work..but you are not going to find out ( I suspect ) unless you try. Logic would dictate that the S50 grew from the S28 and that there would be some parts crossover, but it is equally likely that small detail changes were made that may mean parts are not entirely compatable. Will be interesting to see how you get on if you do try it. Any more news on this yet? I'm in the process of figuring out why 2nd doesn't engage, I spoke to my mate (who's owned it from new, ran it for a few hours) who said "what second gear?" so I pulled it apart and found that the gear that fits over the shifter has no teeth. I'm not keen on fitting another plastic gear as its asking for more trouble (why don't they make gears/internals out of metal with an external plastic gear that fits onto the clutch that way all the shock will be transmited to the weakest point- the plastic gear = a quick and easy repair with LOTS of repeat business? as opposed to random bits going, anyway, I digress....). Basically can anyone definetly tell me yes/ no on what parts I can buy that will work. All I'm looking to do is upgrade the internals so I don't have to mess about with it again? If not, I'm gonna do some research looking at part numbers, diagrams, etc (but I'm aware half the part no's are different in real life to what the book/website says!) to find out myself! EDIT: I just found on their site that the gears are physically different, so the next thing that springs to mind is to replace that entire shaft, as , as long as the gears mesh alright it should work. Although I dont know if the gearing is altered, I CBA to count the teeth on the pics; S28 Gearbox; This pic doesn't appear to work, direct link:http://mms.tiger.tw/upload/parts/car/250/PD1438.jpg Link to TG S28 website: http://www.thundertiger.com/product/6228-F.html S50 Gearbox; This pic doesn't appear to work, direct link: http://mms.tiger.tw/upload/parts/car/250/PD7203.jpg Link to TG S50 website: http://www.thundertiger.com/product/6225-F.html If you want to download the manuals off their pages then I'd allow a while, their site is incredibly slow (I've been on it on many computers in differing locations). Another thing I've done is emailed Thunder Tiger, so hopefully I'll get an answer straight from the horses mouth! I'm now gonna look at the Team Associated Monster GT gearbox as this is the same truck apparently. I'll update again when I know more! Edited March 10, 2010 by ereeiz Quote Link to comment Share on other sites More sharing options...
ereeiz Posted March 10, 2010 Share Posted March 10, 2010 Right, I just rang Amerang (UK importers of TG stuff) and spoke to a bloke in the tech. dept. who said that the internals are different and won't work together. There is no metal gear set for it (that they do anyway, whether a 3rd pty company does it I don't know yet). He said he didn't think the S50 box would fit the S28 and mentioned something about the chassis being shorter. If anyone finds anything different then please post on here as this was the top result in google so I'm sure others'd be grateful! Quote Link to comment Share on other sites More sharing options...
Delta-9 Posted June 17, 2013 Share Posted June 17, 2013 Did anyone get to the bottom of this? I am considering it... surely someone will know 3 years on?!? Quote Link to comment Share on other sites More sharing options...
jari Posted June 17, 2013 Share Posted June 17, 2013 I have both an S28 and S50 gearbox as spares. No time to take them apart properly and measure/photo at the moment. Though your question has made me realize I probably should just to find out for myself. S28 and S50 box side by side. http://www.msuk-forum.co.uk/uploads/med_gallery_29013_2646_564674.jpg S50 box in s28 chassis: http://www.msuk-forum.co.uk/uploads/med_gallery_29013_2646_182684.jpg They are identical on the outside. Mounting holes of the S50 box line up perfectly with the S28 chassis. Quote Link to comment Share on other sites More sharing options...
Delta-9 Posted June 17, 2013 Share Posted June 17, 2013 (edited) thanks for the pictures. I would be very interested if you do have the time and inclination to do it check it out! I have just ordered an foc for the .21/.28. I was looking around for the best price and came across one advertised for the s50 which looked thicker in places. I have just popped on to thunder tigers website to try and post up pictures of the difference but under optional parts for the s50 they list the part number for the .28. Weird. Perhaps I was seeing things before and they are the same... I will keep searching. Edit: found! original: http://mms.tiger.tw/upload/parts/car/250/PD1774.jpg new: http://www.amazon.com/Team-Associated-25724-Forward-Only/dp/B004Q1EDS4 this is worth a read: http://www.rcuniverse.com/forum/m_9619617/tm.htm sounds like the cases may be the same but the gears and/or rods are a bit different. Only slightly though. Edited June 17, 2013 by Delta-9 Quote Link to comment Share on other sites More sharing options...
andre2 Posted June 18, 2013 Author Share Posted June 18, 2013 I have done that gearbox build about 3years ago and its still running today i last open it 3years ago but i must add it standing now for almost 1,5years fly copters now. All i can say is it work i lost a bit on top speed but i font have that trouble rebuild the box so often Quote Link to comment Share on other sites More sharing options...
Delta-9 Posted June 18, 2013 Share Posted June 18, 2013 Thank you for letting us know! What did you have to change? Just the gears or shafts, bearings etc too? Any idea if the older foc will work with the newer internals? Thanks. Quote Link to comment Share on other sites More sharing options...
andre2 Posted June 18, 2013 Author Share Posted June 18, 2013 I honestly dont remember what was it that i change i have the spur gear and pinion gear od the s50 and i think it was the shaft on the second gear im not sure like i said i last open that box 3years ago as soon as i have some time i will post pics off the box outside view Quote Link to comment Share on other sites More sharing options...
Rich8 Posted June 22, 2013 Share Posted June 22, 2013 I think Mr Pug has done this conversion. Might be worth getting his input. Quote Link to comment Share on other sites More sharing options...
PlonKaTroniX Posted January 12, 2017 Share Posted January 12, 2017 BUMP... Hi all, thought I would bring this topic back to life... after all, some of us still have these and they are still going strong (despite the design flaws). My s28 gearbox bearings have play which allows the shaft to wobble, which in turn messes up the mesh between the gears thus resulting in gear tooth shredding, these fact that the s50 has a third bearing at the end highlights the design flaw on the s28, too much force on the front gearbox bearing causes the problem mainly due to the fact the shaft is not balanced, this got me thinking... how can one re-design this. Looking at the s50 they introduced the 3rd outer bearing which would balance the shaft load over the 3 bearings equally. Has anyone else upgraded or modify the gearbox? I can't find a %100 'how to' just dribs and drabs on the subject. Quote Link to comment Share on other sites More sharing options...
Fly In My Soup Posted January 13, 2017 Share Posted January 13, 2017 (edited) Just buy an s50 gearbox, like for like fit, I dremelled out two holes and that was it. I've owned two s50's and 4 mta4s, most parts are identical , except engine and gearbox internals Edited January 13, 2017 by Fly In My Soup Quote Link to comment Share on other sites More sharing options...
Fly In My Soup Posted January 13, 2017 Share Posted January 13, 2017 Wouldn't fancy rebuilding it from spares etc Quote Link to comment Share on other sites More sharing options...
PlonKaTroniX Posted January 15, 2017 Share Posted January 15, 2017 awesome photo (thank you). Is the s50 box slightly longer and therefore will it need a shorter shaft? (looks like in the link from above...http://www.msuk-forum.co.uk/uploads/med_gallery_29013_2646_564674.jpg) Quote Link to comment Share on other sites More sharing options...
dazp1976 Posted January 15, 2017 Share Posted January 15, 2017 20 minutes ago, PlonKaTroniX said: awesome photo (thank you). Is the s50 box slightly longer and therefore will it need a shorter shaft? (looks like in the link from above...http://www.msuk-forum.co.uk/uploads/med_gallery_29013_2646_564674.jpg) All boxes are identical in size It's only the internals that differ. Will cost around the same to convert S28 to metal as it would to buy a complete S50 box due to what you'd need. Center shafts identical sizes on them all (MGT 4.6/8.0 MTA4 S28/S50/S50v2. Just a few differences with the blue CVD cup & rebuild kit parts. Quote Link to comment Share on other sites More sharing options...
ouchie Posted May 7, 2018 Share Posted May 7, 2018 Can any one tell me the parts needed to make the mta4 s28 gearbox have metal gears ? Quote Link to comment Share on other sites More sharing options...
Fly In My Soup Posted May 7, 2018 Share Posted May 7, 2018 37 minutes ago, ouchie said: Can any one tell me the parts needed to make the mta4 s28 gearbox have metal gears ? The gearbox internals on the s50 are all alloy Go find yourself an MTA s50 gearbox on the old eBay! Its more or less a straight swap out Quote Link to comment Share on other sites More sharing options...
Peter K Posted September 8, 2023 Share Posted September 8, 2023 I fixed it. Had to pull the box out to get my hands on it but I discovered it was a stuck bearing. Probably water from the last washdown. Even though I blow-dry all the cars after washing, there must have been some water seepage that sat on a bearing and probably created a rust spot. One hard turn of the shaft with the screwdriver and it came loose. I still pulled the gearbox apart to make sure there was no water leakage into the box and the gears were absolutely fine. I put it back together and it runs fine after 8 years. Quote Link to comment Share on other sites More sharing options...
Peter K Posted September 8, 2023 Share Posted September 8, 2023 On 14/01/2017 at 09:36, Fly In My Soup said: Wouldn't fancy rebuilding it from spares etc http://i29.servimg.com/u/f29/14/39/94/95/boite_11.jpg Yeah that's what it looked like internally 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.