spankrjs
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South Mississippi, USA
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Are the front tires taller than the rear tires?
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Oh Tamiya.. will the quirkiness ever cease?
spankrjs replied to Killajb's topic in General discussions
You can't go wrong with a Bassett Hound 😆 -
monster beetle Help with identifying Monster Beetle!
spankrjs replied to okieran's topic in Vintage Tamiya Discussion
Do the rere Monster Beetles come with the rear glass part like the vintage MBs or do they come with the Sand Scorcher style glass without the rear part? -
Oh, I meant the pitch
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What type of pinion do these use?
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Vintage Three Speed Full Ball Bearing Install
spankrjs replied to spankrjs's topic in Vintage Tamiya Discussion
Oh yes, still in to Jeeping!! I have to go pick up a new front driveshaft for my red Scrambler, bent the badword out of the front shaft in TX. Still have my Green Scrambler, a '85 Spring Special CJ-7, a '86 CJ-7, and traded my '22 Gladiator in on a '24 392. Glad your boys are into RC's, too -
Vintage Three Speed Full Ball Bearing Install
spankrjs replied to spankrjs's topic in Vintage Tamiya Discussion
I thought I recognized that member name!! I sure miss the scale4x4org site -
PM sent on Wrangler wheels and 35t CR01 motor.
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Vintage Three Speed Full Ball Bearing Install
spankrjs replied to spankrjs's topic in Vintage Tamiya Discussion
No problem guys, glad you found it interesting, thank you -
Your single most expensive RC item purchase?
spankrjs replied to Mechanic AH's topic in General discussions
A NIB 58111 Mountaineer 12-14 years ago. -
Best Grease / Lube for Tamiya 1985 Bruiser Tranny
spankrjs replied to steponit!'s topic in Vintage Tamiya Discussion
Started a new thread: -
Vintage Three Speed Full Ball Bearing Install
spankrjs replied to spankrjs's topic in Vintage Tamiya Discussion
Install center shaft into case from the front side: Place gold gear on shaft, carefully drive it back on (don't get sleeve retainer inside ball bearing!!!!!!!): The reassembled rear output shaft: And I ended up using this grease as lube on the gears. Since all the shafts now spin on ball bearings, no reason to use a liquid lube which would wick between the shafts/bushings: And the transmission functions just fine. I still need to do some long term durability testing, BUT that sleeve retainer stuff is very strong, AND I still have the little "raised ridge" splines to help hold the press gears in place. I am fairly confident in saying that something in one of the axles will fail way before something in the transmission!! And besides, these transmissions do use a slipper clutch (well, the Bruiser/Mountaineer). I am sure the ball bearings will aid in the smoothness of operation/longevity of the gears. My only concern will be disassembly in the future due to the sleeve retainer. Heating the shaft with a torch (jewelers tip!!!) should aid in removal, if ever necessary? Since these ball bearings are way deep inside the transmission I do not really see how they could be contaminated (unless you submarine the transmission often). So, maybe installing high quality ball bearings will result in a "lifetime" fix?? Anyway, just some information/pictures. Use at your own risk!!! -
Vintage Three Speed Full Ball Bearing Install
spankrjs replied to spankrjs's topic in Vintage Tamiya Discussion
Reassembling the center shaft. I used a shim between the two bearings. A note on shims - compare the existing bushings to your new bearings. A thin shim might be needed to make up for the fact that the flange on the flanged ball bearing is thinner then the flange on the original bronze bushing. You will have to make this call. You are not trying to shim these parts super tight, just replicating how it was assembled. It would probably be wise to use a caliper and take some notes BEFORE pulling everything apart!! Since I filed the "raised ridges" down, I needed to "recreate" them. After installing the ball bearings, I put the shaft on a steel vice, used a small flat screw driver that was the same size/length as the original "ridges", and "restruck" the ridges. Basically, the shaft is kind of soft, so you can strike it, and raise back up the "ridges". Even though I "recreated" the rides, they were not as high as before. So, I glued the "press" gears back in place with this: This is super strong, way stronger then red "Lock-Tite". No way the press gears should come off!!!! BUT, use caution. This stuff sets up fast, AND, you do not want it running into your ball bearings because it will seize them up!!!!!!!!!!! So, be careful, maybe just use red gel Lock-Tite?? Picture of my "re-struck" ridge splines: -
Vintage Three Speed Full Ball Bearing Install
spankrjs replied to spankrjs's topic in Vintage Tamiya Discussion
To remove the center shaft from the transmission case, I put it "front side down" on a vice, used a small punch and hammer, and gently drove the shaft out the front side. This removes the gold gear: I then slipped the three bushings/grey gear over the 'raised ridge splines" on the left hand side of the shaft (left in the picture above). Leave this gold center gear alone, no reason to remove it. Now, the tricky part. Ball bearings will NOT slide over these "raised ridge" splines. So, I chucked the shaft up in a hand drill and spun the shaft against a flat file to "remove" the ridges: I did this slowly. Only removing enough of these "ridges" to slip the ball bearings over them.