Review kit supplied by Modelsport.co.uk
We are continuing with the kit build of the Associated RC10 Classic, carrying on with assembling the entire transmission! Last time around, we showed you how the front suspension is assembled, complete with up-close pictures and even a video! So now I’ll be showing you how the rest of the kit goes together.
Here’s the steps we’re looking at…
…and they’re spread over more than THREE pages!
But have no fear, it’s actually not that bad – let’s go!
Here’s all the parts that are needed for these steps – Bags C and CC. Bag C are the bits on the left under the addendum sheet. The plastic transmission halves are in the main bag, and bags C1 through C7 are the hardware bits grouped together, plus the spur gear. Bag CC has the gold-anodized motor mount, greases and the gear plate that goes inside the transmission.
The first step is to attach a layshaft to the gear plate. This is another step where you need some threadlocking compound – don’t put too much on the threads, you don’t want any on the plastic gears you’ll be installing in a couple of steps.
Another layshaft, this one attaches with a funky large curved E-clip, which you may be able to just make out in the picture.
Now for the outdrives, or as some manufacturers call them the drive cups! Very interesting to see that the outdrives actually have gears directly on them. This is the first area of the transmission where we swap out the oilite bushings for the bearings supplied by Modelsport – look at how much rotating weight is being saved right there!
If you don’t have a C-clip wrench, don’t worry about it, just do as I did in the picture above and put a thumb securely over the C-clip and carefully use a flat head screwdriver to press it into place.
Now for 2 more gears of the 6-gear transmission – again replacing bearings for the bushings. These are held in place with four screws each – can you imagine putting this amount of rotating weight in a modern buggy transmission?!
So here we’ve got the outdrives installed on the lower layshaft…
…and on the shorter layshaft we put the two plastic gears – it’s starting to coming together!
And now for the start of the thrust bearing and the final two gears. Handily, the thrust bearing is pre-assembled, which is quite nice.
The thrust bearing set uses a couple of different sizes of bearings, so make sure you double-check the fit and placement. Unfortunately the manual doesn’t have a size reference for the bushings the way it does for the screws, so use a ruler or pair of calipers if you can’t spot the difference between 3/8″ and 1/4″.
And here’s the completed thrust bearing set! One thing to note is to make sure you pay attention to the addendum sheet that’s stapled to Bag C, which tells you to lubricate the metal-to-metal surfaces – very important! If you forget to do this, you’ll have to disassemble the entire transmission to get to see this bit again…another area where you’d miss the modern convenience of today’s insanely easy to maintain drivetrains.
Silicone grease and 1/8″ diff balls go into the spur gear easily enough!
Yes, that is an off-road buggy spur gear with diff balls, you’re not looking at a pan car spur!
Then slide it onto the thrust bearing assembly.
Compress the very small spring a couple of times with a pair of pliers, then secure it on with the locknut. Make sure the face of the locknut is flush with the end of the bolt.
Now we slide the thrust bearing set through the motor plate and through the right side of the transmission case, meshing the gears with the assembly we made earlier. Here’s where you can see the guts of the 6-gear transmission all together for the first time. Again (and sorry for harping on this constantly, but it is a ‘retro’ kit!) it’s just amazing what modern car transmissions are like, with buggies having belts and instantly accessible spur gears and transmission adjustments. But hey this sucker won the Worlds, so who’s going to argue about the technicalities?
Attaching the e-clip on the end of the thrust bearing assembly – the clip holds in the bearing that supports the opposite end.
The manual suggests putting a notch in the case to make the e-clip easier to install, which is a good idea. I didn’t have to do this really but for getting the clip off the notch will definitely come in handy!
And now, installing the wool felt outdrive seals! Yes, wool. On a world championship-winning model car. Go figure! But hey, it does the job…and it’s sustainably sourced as well!
Attach the transmission to the motor plate with four bolts and job’s a good ‘un!
And there we go – the transmission is ready to install.
Now, here’s the video showing how all the steps went together:
Next time: the rear bulkhead!