Jump to content
Mark Pascoe

Help needed identifying SRB ball diff parts

Recommended Posts

Hi folks

I stripped down a SRB gearbox today that I’ve had sitting in my parts box for years. Inside it were these parts from a ball diff. Can anybody help me identify what they are? I have no idea what the aluminium gear is from but I think the 2 axles and pressure disc may be Thorp items from the SRB ball diff (4435) but I can’t be sure.

Any advice would be greatly appreciated  .

40C5CA48-07D5-4614-9C30-6651C26C0AEC.jpeg

Share this post


Link to post
Share on other sites

Here is an instruction for SRB, which shows 9 balls?  

S1cCP2H.jpg

Share this post


Link to post
Share on other sites
45 minutes ago, Juggular said:

Here is an instruction for SRB, which shows 9 balls?  

S1cCP2H.jpg

Thank you, looking at the parts list I may have a pressure disc, part# 4442 and 2 right hand axles, part# 4445. Possibly. 

Share this post


Link to post
Share on other sites
On 4/6/2019 at 1:18 PM, SuperChamp82 said:

The aluminium gear looks like the bottom half of a Nodis geared diff. 

Thanks for the info. I’ve had a bit more of a dig around and I don’t think it’s a Nodis gear, that diff is quite a different design. Don’t know if you’ve seen this but some good Nodis info here: https://www.tamiyaclub.com/article.asp?id=186 

I think it’s more likely to be a MPI gear. Again some good info here on tha MPI diff if you haven’t already seen it: https://www.tamiyaclub.com/showroom_model.asp?cid=43754&id=5475 I still think the axles and pressure disc are Thorp however. 

Photo of a MPI diff gear for reference (not mine).

FE5295CE-D4CE-440A-9357-2F08EAE5974E.jpeg

Share this post


Link to post
Share on other sites

That looks like an MIP diff. Here is a pic of mine.  

DEF6D67F-64A5-4C50-8B21-1614CC2B55EB_zps

yours has longer outdrives for the SRB universals. 

Share this post


Link to post
Share on other sites
On 4/8/2019 at 4:15 AM, Shodog said:

That looks like an MIP diff. Here is a pic of mine.  

DEF6D67F-64A5-4C50-8B21-1614CC2B55EB_zps

yours has longer outdrives for the SRB universals. 

Thanks Shodog.

That’s a nice piece of kit there, I’ve seen some of the stuff you have collected, very nice.

I agree about the aluminium gear being MIP but looking at the axles they don’t have the 3 tapped holes like the MPI ones. Can I ask you, do both your MPI axles/outdrives have tapped holes, either internally or externally? My axles have no holes. I’m still leaning towards them being 2 right hand Thorp axles.

As for the pressure disc, not sure. 

The black plastic/nylon counter shaft gear is another mystery! and as for the “input” shaft/gear (last 2 pieces in the far right in the photo) god knows what they were thinking, I don’t know what it’s from but it wouldn’t work in a million years! 

 

Share this post


Link to post
Share on other sites

I’ve managed to pick up some NIP Thorp ball diff parts which has allowed me to compare them to these parts. The 2 axles are definitely Thorp right hand axles, part# 4445, but the pressure disc is not a Thorp one and as it fits the aluminium gear perfectly I’m assuming it’s a MIP ball diff one?

So a bit more of the puzzle solved. 

Next decision is do I sell/trade the MIP parts or try and find the missing parts to complete the diff, I suspect option 2 could be a challenge!

 

DECB1CD4-9897-4CFB-8DCA-74BFC364F39D.jpeg

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

×
×
  • Create New...