eXcelerate RC Prodigy Formula 1
#811
Joined: Oct 2002
Posts: 4,273
From: VA
Where can I find instructions for the installing the pro kingpin front suspension?
Edit: Nevermind figured it out. Needed to ream the white inserts now it’s smooth.
Edit: Nevermind figured it out. Needed to ream the white inserts now it’s smooth.
Last edited by Apex; 11-18-2025 at 06:59 PM.
#813
The new bushing have more surface area, so you have to use a thinner kingpin grease. Moving from 15k down to 5k with the new bushing is typical.
#814
Tech Addict
Joined: Jan 2003
Posts: 569
From: Montréal, Qc
Martin Paradis
#815
The new inserts actually go all the way through to those interlocking teeth. There is more surface area and more grooves to hold the fluid. They also kind of click in so there is no slop whatsoever. Another cool design from Josh. Get a good 5.1mm reamer though and make sure that you've done a thorough job with it. I heard someone else say that a 5.2mm reamer would allow the use of 15ks like we have been using. I'm not sure where to get a 5.2mm reamer?
The only issue with using the A12 bushings is that they are a little bigger and far less surface area so you really have to use a 30k to get the same feeling as the 15k.

#820
#821
Tech Adept
Joined: Nov 2021
Posts: 247
From: Tennessee
[QUOTE=MC Hamilton;16228067]I already have a test version of 5k and 10k to test. Kyosho also makes a 1k, 3k and 5k. The 5k Kyosho works, but the guys are saying it doesn't stay on as long as the new test stuff.
The new inserts actually go all the way through to those interlocking teeth. There is more surface area and more grooves to hold the fluid. They also kind of click in so there is no slop whatsoever. Another cool design from Josh. Get a good 5.1mm reamer though and make sure that you've done a thorough job with it. I heard someone else say that a 5.2mm reamer would allow the use of 15ks like we have been using. I'm not sure where to get a 5.2mm reamer?
The only issue with using the A12 bushings is that they are a little bigger and far less surface area so you really have to use a 30k to get the same feeling as the 15k.
/QUOTE]
I’m using the kyosho blue 30k grease for the a12 bushings right now. I’ve been told it’s better for me to use the kyosho yellow 15k grease instead when I get the new steering bushings as it will feel similar to the 30k.
on another subject is there a chart that shows the hardness of all available front springs that fit on the prodigy lineup?
The new inserts actually go all the way through to those interlocking teeth. There is more surface area and more grooves to hold the fluid. They also kind of click in so there is no slop whatsoever. Another cool design from Josh. Get a good 5.1mm reamer though and make sure that you've done a thorough job with it. I heard someone else say that a 5.2mm reamer would allow the use of 15ks like we have been using. I'm not sure where to get a 5.2mm reamer?
The only issue with using the A12 bushings is that they are a little bigger and far less surface area so you really have to use a 30k to get the same feeling as the 15k.
/QUOTE]
I’m using the kyosho blue 30k grease for the a12 bushings right now. I’ve been told it’s better for me to use the kyosho yellow 15k grease instead when I get the new steering bushings as it will feel similar to the 30k.
on another subject is there a chart that shows the hardness of all available front springs that fit on the prodigy lineup?
#823
[QUOTE=Kruss45;16228111]
I did this using a drill press and scale, measuring each spring to the middle of it's compression length. This shows pressure at the mid point, but will not give any insights into progressive vs linear springs.


#824
I had a chance to run these a little while back. Absolutely loved them, wear seems to be great. Obviously the different compounds are nice to have for track conditions and setup. I liked the yellow rears, and purple fronts on my Prodigy. Ran them with a ball diff on a medium to high grip asphalt track ( Jackson ).
#825



1136Likes

