Mr.Duke
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I've seen quite a few people over the years asking if it was possible to replace worn pins in the driveshafts on Arrma 6s vehicles and if so, how to go about doing it.
Since I've got a few sets of driveshafts laying around with the pins worn down, I figured I'd find the time to rebuild them with new pins and put them back into service again on a couple of new builds I've been gathering parts for.
After a bit of searching around the web for a quality pin, and a tool that would accomplish the job, it's surprisingly easy.....
* as long as you have the right tool * for the job.
Arrma uses two different length pins that are press fit into their driveshafts.
3mm x 12.75mm pins at each end of the center shafts and inner shaft on the front and rear driveshafts.
The 2 odd balls are 3mm x 14.5mm pins on the large end of the outside rear dog bones
Luckily, Mugen sells high quality pins and are a perfect replacements for both of those stock 3mm Arrma pins.
3 x 12.8 pins Part# MUGC0270 for the 8 smalls
and 3 x 13.8 Part # MUGC20271 for the big ends at the rear
The longer of the two Arrma pins actually measures out at 3mm x 14.5mm, but the difference of 0.7mm between the the two isn't enough of a variation to make a difference in its function.
to press the pins in and out:
You've basically got 2 options here, and this may or may not be the breaking point of this exercise when it comes to the expense of rebuilding your dog bones with new pins.
Option 1: buy a tool that is specific to the job at hand.
Since I'm a fabricator at heart and I don't feel the need to spend $60 on a tool that I can easily make myself, I chose option 2.
The tool I made is an old standing seam roofing clamp used for solar panels that can be purchased online for about $6 and repurposed as a pin press very easily.
How it functions is a bit difficult to describe so here's a quick video to get a better understanding of the premise behind making your own pin press.
Pressing the worn pin out
Press the new pin in behind the old one
The end result.
Good as new and ready for more abuse ?
- Edit to add a couple quick videos to show how to make a simple inexpensive pin press tool and how I press new pins into the ends of the driveshafts
Link to aluminum standing seam roof clamp that I repurposed into a pin press
https://www.rapidmaterials.com/S-5-...MIkvbfgaeo5AIVCo7ICh3F4AkjEAQYAiABEgIAR_D_BwE
Since I've got a few sets of driveshafts laying around with the pins worn down, I figured I'd find the time to rebuild them with new pins and put them back into service again on a couple of new builds I've been gathering parts for.
After a bit of searching around the web for a quality pin, and a tool that would accomplish the job, it's surprisingly easy.....
* as long as you have the right tool * for the job.
Arrma uses two different length pins that are press fit into their driveshafts.
3mm x 12.75mm pins at each end of the center shafts and inner shaft on the front and rear driveshafts.
The 2 odd balls are 3mm x 14.5mm pins on the large end of the outside rear dog bones
Luckily, Mugen sells high quality pins and are a perfect replacements for both of those stock 3mm Arrma pins.
3 x 12.8 pins Part# MUGC0270 for the 8 smalls
and 3 x 13.8 Part # MUGC20271 for the big ends at the rear
The longer of the two Arrma pins actually measures out at 3mm x 14.5mm, but the difference of 0.7mm between the the two isn't enough of a variation to make a difference in its function.
to press the pins in and out:
You've basically got 2 options here, and this may or may not be the breaking point of this exercise when it comes to the expense of rebuilding your dog bones with new pins.
Option 1: buy a tool that is specific to the job at hand.
Since I'm a fabricator at heart and I don't feel the need to spend $60 on a tool that I can easily make myself, I chose option 2.
The tool I made is an old standing seam roofing clamp used for solar panels that can be purchased online for about $6 and repurposed as a pin press very easily.
How it functions is a bit difficult to describe so here's a quick video to get a better understanding of the premise behind making your own pin press.
Pressing the worn pin out
Press the new pin in behind the old one
The end result.
Good as new and ready for more abuse ?
- Edit to add a couple quick videos to show how to make a simple inexpensive pin press tool and how I press new pins into the ends of the driveshafts
https://www.rapidmaterials.com/S-5-...MIkvbfgaeo5AIVCo7ICh3F4AkjEAQYAiABEgIAR_D_BwE
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